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Nexus 1262/1272 Meter User Manual V.1.18

1. 6 60 16 76cm Figure 6 4 Socket Meter in A Base Side View 6 1 1 Cable Color Key 3 Electro Industries GaugeTech Doc l The Leader In Power Monitoring and Smart Grid Solutions Cable Signal Name Color Cable 1 Port 1 Wiring RS485 SHIELD Black Tx RX Brown Tx Rx Red Port 4 Wiring RS485 SHIELD Orange Tx RX Yellow Tx Rx Green IRIG B Blue Purple E151701 6 5 6 Hardware Installation Cable Signal Name Color Cable 2 High Speed Inputs Input 8 Black Input 7 Brown Input 6 Red Input 5 Orange Input 4 Yellow Input 3 Green Input 2 Blue Input 1 Gray Common Purple Cable 3 Optional KYZ Output Normally Closed 1 Black Common Brown Normally Open 1 Red Normally Closed 2 Orange Common Yellow Normally Open 2 Green Normally Closed 3 Blue Common Purple Normally Open 3 Gray Normally Closed 4 Light Green Common Pink Normally Open 4 White Cable 4 RS485 SHIELD Blue Tx RX Green Tx Rx Red Cable 5 RJ 11 Modem Label Attached Blue 3 Electro Industries GaugeTech Doc E151701 l The Leader In Power Monitoring and Smart Grid Solutions 6 Hardware Installation Cable Signal Name Color Cable 6 RJ 45 Ethernet Label Attached Blue Cable
2. Electro Industries GaugeTech The Leader In Power Monitoring and Smart Grid Solutions Doc E151701 Customer Service and Support Customer support is available 9 00 am to 4 30 pm Eastern Standard Time Monday through Friday Please have the model serial number and a detailed problem descrip tion available If the problem concerns a particular reading please have all meter readings available When returning any merchandise to EIG a return materials authorization number is required For customer or technical assistance repair or calibration phone 516 334 0870 or fax 516 338 4741 Product Warranty Electro Industries GaugeTech warrants all products to be free from defects in material and workmanship for a period of four years from the date of shipment During the warranty period we will at our option either repair or replace any product that proves to be defective To exercise this warranty fax or call our customer support department You will receive prompt assistance and return instructions Send the instrument transporta tion prepaid to EIG at 1800 Shames Drive Westbury NY 11590 Repairs will be made and the instrument will be returned This warranty does not apply to defects resulting from unauthorized modification misuse or use for any reason other than electrical power monitoring The Nexus 1262 1272 meter is not a user serviceable product THIS WARRANTY IS IN LIEU OF ALL OTHER WARRANTIES EXPR
3. RS485 Port Shield SH to Shield SH Figure 5 4 RS485 Connection Detail e S Shield This is not an earth ground connection You must also connect the shield to earth ground at one point Do not connect the shield to ground at multiple points it will interfere with communication e Two wire RS485 communication terminals Connect the terminal of the meter port to the terminal of the device Connect the terminal of the meter port to the terminal of the device NOTES on RS485 Connections e Use a shielded twisted pair cable 22 AWG 0 33 mm or larger grounding the shield at one end only e Establish point to point configurations for each device on a RS485 bus Connect terminals to terminals connect terminals to terminals e Protect cables from sources of electrical noise e Avoid both star and tee connections see Figure 5 6 e No more than two cables should be connected at any one point on an RS485 network whether the connections are for devices converters or terminal strips Cj Electro Industries GaugeTech Doc E151701 5 5 The Leader In Power Monitoring and Smart Grid Solutions 5 Serial Communication Wiring e Include all segments when calculating the total cable length of a network If you are not using an RS485 repeater the maximum length for cable connecting all devices is 4000 feet 1219 meters e For an RS485 Daisy Chain connection in which you
4. meee VAR Phase Angles x a b c Z cos PF 3 Electro Industries GaugeTech Doc E151701 The Leader In Power Monitoring and Smart Grid Solutions 13 Meter Calculations Total Harmonic Distortion THD For Wye X Va V Ver lar b ic For Delta x ig iby icy Vabr Vbcr Vea 127 D RMS THD RMS x K Factor X a b fe 127 S he RMS hel KFactor e gt RMS Xh j h 1 Voltage Imbalance N number of samples Ye v v N oa No No RMS RMS RMS Current Imbalance RMS rax RMS RMS RMS Imb I Electro Industries GaugeTech Doc E151701 The Leader In Power Monitoring and Smart Grid Solutions 13 6 13 Meter Calculations 13 2 Demand Integrators Power utilities take into account both energy consumption and peak demand when billing customers Peak demand expressed in kilowatts KW is the highest level of demand recorded during a set period of time called the interval The Nexus 1262 1272 supports the following most popular conventions for averaging demand and peak demand Block Window Demand Rolling Window Demand Thermal Demand and Predictive Window Demand You can program and access all conventions concurrently with the Communicator EXT software see the Communicator EXT User Manual Block Fixed Window Demand This convention records the average arithmetic mean demand for consecutiv
5. Figure 12 3 Sample of Switchboard Options Label 4 Electro Industries GaugeTech Doc E151701 12 2 The Leader In Power Monitoring and Smart Grid Solutions 12 Switchboard Meter 12 3 Specifications and Dimensions The Switchboard meter specifications are the same as those of the Socket meter except for meter dimensions The Switchboard meter is essentially the Socket meter in an oblong case The dimensions are given in figures 12 1 Front View 12 4 Back View and 12 5 Side View See Chapter 2 for meter specifications 6 13 15 57cm Wd 98 S YKZ Kar Eos YKZ ana CH1 CH2 CH3 CH4 Gateway 0 Sow saw 87654321C IRIG B_ COMI coM4 HIGH SPEED WT L LL 8 L365S LT S WW398 ZZ 0 6 Electro Industries i GaugeTech www electroind com la Hi Ib Hi Ic Hi Va 0 0 0 0 0 w87 6 L O 0 50 1 27cm 5 60 14 22cm 6 58 16 71cm Figure 12 4 Switchboard Meter Dimensions Back 4 Electro Industries GaugeTech Doc E151701 12 353 The Leader In Power Monitoring and Smart Grid Solutions 12 Switchboard Meter lt 6 25 15 88cm __ gt a Fi wo g iz 458 _ D ca D Lg 2 0 pig 7 0 17 78cm 5 08cm jaat 9 0 22 86cm Figure 12 5 Switchboard Meter Dimensions Side Electro Industries GaugeTech Do
6. Both devices 1 Accept new values through communication 2 Output current loops scaled from previously accepted values The 0 imA module includes one more process in its Normal Mode 3 Read and average the A D and adjust values for Process 2 above The device will operate with the following default parameters Address 247 F7H Baud Rate 57600 Baud Transmit Delay Time 20 msec Normal Operation is prevented by a number of occurrences See Section 10 4 for details Electro Industries GaugeTech Doc E151701 The Leader In Power Monitoring and Smart Grid Solutions 10 8 10 External 1 0 Modules 10 6 Analog Input Modules Analog Input Module Specifications Model Numbers 8AI1 8 channel analog input O 1mA 8AI2 8 channel analog input O 20mA 8AI3 8 channel analog input O 5VDC 8AI4 8 channel analog input O 10VDC Accuracy 0 25 of Full Scale Scaling Programmable Communication RS485 Modbus RTU Programmable Baud Rates 4800 9600 19200 38400 57600 Power Requirement 12 20VDC 50 200mA Operating Temperature 20 to 70 C 4 to 158 F Maximum Load Impedance O 1imA 10k Ohms 4 20mA 500 Ohms Factory Settings Modbus Address 8AI1 136 8AI2 140 8AI3 144 8AI4 148 Baud Rate 57600 Transmit Delay Time 0 Default Settings Reset Button Modbus Address 247 Baud Rate 57600
7. Figure 6 8 1 0 Modules Mounting Diagram Overhead View Electro Industries GaugeTech Doc E151701 The Leader In Power Monitoring and Smart Grid Solutions 6 Hardware Installation Mounting Brackets MBIO Female RS485 Side Port I O Port Size and Pin Configuration Vary Male RS485 Side Port Figure 6 9 Single I O Module with Mounting Brackets IMPORTANT The Nexus 1262 1272 meter does not supply power to the I O mod ules You must use an external power supply such as the EIG PSIO 12V Output Figure 6 11 shows mounting with the PSIO Mounting Bracket Mounting Bracket I 6 879 13 088cm CE l O Power In Be dancer Bod 3 437 18 729cm P Power Supply lt 2 200 5 588cm Max Power 12 VA Input Voltage 12 60V DC O 90 240v ACDC Output Voltage 12V DC 1 100 2 54cm 618 1 570cm 1 301 3 305cm Figure 6 10 1 0 Modules Mounting Dimensions Front View Electro Industries GaugeTech Doc E151701 6 14 The Leader In Power Monitoring and Smart Grid Solutions 6 Hardware Installation TX CT RX TX CT RX CT RX 0 1mA 0 1mA 0 1mA Analog Output Analog Input Analog Input Power In Module Module Module oO COM COM NC INPUT 1 INPUT 1 Li INPUT 2 INPUT 2 A INPUT 3 INPUT 3 Power Su PSIO PP Y INPUT 4 INPUT
8. The Leader In Power Monitoring and Smart Grid Solutions Doc E151701 8 10 8 Transformer Loss Compensation Calculate Load Loss Values Quantity Value at Meter Base Loss at Quantity Meter Base kVA Meter Base No Load Loss Loss KW Watts FE No Load Loss Loss kVAR VARs FE Load Loss Loss kW Watts CU Load Loss Loss kVAR VARs CU Enter Value at Meter Base from Normalize Losses section Enter Meter Base kVA from previous calculation Calculate Loss at Meter Base by dividing Value at Meter Base by Meter Base kVA and multiplying by 100 Enter calculated Loss Watts values into the Nexus meter using Communicator EXT software Refer to Appendix B of the Communicator EXT User Manual for instructions Electro Industries GaugeTech The Leader In Power Monitoring and Smart Grid Solutions Doc E151701 8 11 8 Transformer Loss Compensation This page intentionally left blank 4 Electro Industries GaugeTech Doc E151701 8 12 The Leader In Power Monitoring and Smart Grid Solutions 9 Using the External Displays 9 Using the External Displays 9 1 Overview The Nexus 1262 1272 Socket meters have a backlit LCD display built into the meter In addition Electro Industries offers an optional external display powered by an additional power supply such as the PSIO The P40N and the legacy P40N is an LED display that provides
9. Transmit Delay Time 20msec 10 6 1 Overview The Analog Input Modules 0 1mA 0 20mA 045Vdc and 0 10Vdc are available in 8 channel format Maximum registers per request read or write is 17 registers All inputs share a single common point This is also an isolated connection from ground The Modbus Map for the Analog Output Module and operating details can be found in the Modbus Communicating 1 0 Modules Manual 3 Electro Industries GaugeTech l The Leader In Power Monitoring and Smart Grid Solutions Doc E151701 10 9 10 External 1 0 Modules 10 6 2 Normal Mode In Normal Mode the Input Module 1 Reads and averages the A D and adjusts values for process 2 2 Calculates the percentage of Input Value NOTE The percentage value of the Input is stored in Input Value Registers Registers 04097 04104 The device will operate with the following default parameters Address 247 F7H Baud Rate 57600 Baud Transmit Delay Time 20 msec Normal Operation is prevented by a number of occurrences See Section 10 4 for details Cj Electro Industries GaugeTech Doc E151701 10 10 l The Leader In Power Monitoring and Smart Grid Solutions 10 External I O Modules 10 7 Digital Dry Contact Relay Output Form C Module Digital Dry Contact Relay Output Module Specifications Model Number 4RO1 4 latching relay outputs Contact Type Changeover SPDT R
10. on the next page NOTE to Edit a custom screen click on the screen in the Available Screens list and then click Edit Then use the instructions in Creating a Custom Display Screen on the next page to modify the screen d To edit a pre defined screen click on the screen in the Available Screens column list and then click Edit Continue to Editing a Pre defined Dis play Screen on page 3 22 Electro Industries GaugeTech The Leader In Power Monitoring and Smart Grid Solutions Doc E151701 3 14 3 Operating Instructions e To create a new screen based on an existing screen highlight the screen in the Available Screens column list right click and select Create New Screen Based on Selected Screen If you are making a custom screen follow the instructions below If you are just changing the screen number or label follow the instructions in Editing a Pre defined Display Screen on page 3 22 f To remove a screen from the list of available screens click on the screen in the Available Screens column list and then click Remove The screen is no longer displayed in the list of available screens and cannot be assigned to any View mode It is also removed from any View modes it has already been assigned to Creating a Custom Display Screen After you click the Create button in the Available screens list you will see the LCD Screen Selection screen shown below LCD Screen Selection Predefined
11. indicates data Binary Relating to a system of numbers having 2 as its base digits 0 and 1 Block Window Avg Power The Block Fixed Window Average is the average power calculated over a user set time interval typically 15 minutes This calculated average corresponds to the demand calculations performed by most electric utilities in monitoring user power demand See Rolling Window Average 5 Electro Industries GaugeTech The Leader In Power Monitoring and Smart Grid Solutions Doc E154701 GL 2 Glossary Byte CBEMA Curve Channel Cold Load Pickup CRC Field CT Current Ratio Cumulative Demand A group of 8 binary digits processed as a unit by a computer or device and used especially to represent an alphanumeric character A Voltage quality curve established originally by the Computer Business Equipment Manufacturers Association The CBEMA Curve defines Voltage disturbances that could cause malfunction or damage in microprocessor devices The curve is characterized by Voltage magnitude and the duration which the Voltage is outside of tolerance See ITIC Curve The storage of a single value in each interval in a load profile This value is the delay from the time control power is restored to the time when the user wants to resume demand accumulation Cyclic Redundancy Check Field Modbus communication is an error checksum calculation that enables a Slave device to d
12. 0000114599028614 x Watt Quadrant 2 3 000000000 000000000 r Q Hour 000000000000136 0000000000000136 r Accumulator Secondary Q Hour 0000000002387479 0000000002387479 r Q Hour 0000000000000000 0000000000000000 r 3 Electro Industries GaugeTech Doc E151701 l The Leader In Power Monitoring and Smart Grid Solutions 4 Performing Meter Testing 4 2 4 Exiting Test Mode Exit Test Mode in one of the following three ways e Press and hold the Test Button for more than 3 seconds e Use the Test Mode Time out Timer if no load is present e Use the Extended Test Mode Time out Timer if load is present These options are explained further in the following sections Exiting Test Mode Details Test Mode Button Pressing the Test Mode Button for more than three seconds ends Test Mode and returns the meter to Normal Mode Test Mode Time out Timer The Test Mode Time out Timer has two modes of operation depending on whether the meter sees measurable load If the meter does not recognize measurable load The meter watches for user interaction by monitoring activity on the Test Button and the Reset Button If neither button is pushed within the programmed Exit Delay time the meter exits Test Mode and returns to Normal Mode Each time the Test or Reset Button is pressed the meter starts the Exit Delay Timer again The Exit Delay time is programmed in the meter s Device Profile in the Device
13. 1 4 Harmonic Distortion Harmonic distortion is primarily the result of high concentrations of non linear loads Devices such as computer power supplies variable speed drives and fluorescent light ballasts make current demands that do not match the sinusoidal waveform of AC electricity As a result the current waveform feeding these loads is periodic but not sinusoidal Figure 1 10 shows a normal sinusoidal current waveform This example has no distortion 1000 2 0 Time lt 500 1000 Figure 1 10 Nondistorted Current Waveform Figure 1 11 shows a current waveform with a slight amount of harmonic distortion The waveform is still periodic and is fluctuating at the normal 60 Hz frequency However the waveform is not a smooth sinusoidal form as seen in Figure 1 10 3 Electro Industries GaugeTech The Leader In Power Monitoring and Smart Grid Solutions Doc 151701 1 14 1 Three Phase Power Measurement a Current amps F lc ns en Figure 1 11 Distorted Current Waveform The distortion observed in Figure 1 11 can be modeled as the sum of several sinusoi dal waveforms of frequencies that are multiples of the fundamental 60 Hz frequency This modeling is performed by mathematically disassembling the distorted waveform into a collection of higher frequency waveforms These higher frequency waveforms are referred to as harmonics Figure 1 12 shows the cont
14. 10 1 Hardware Overview 10 1 10 1 1 Port Overview 10 2 10 2 I O Module Installation 10 2 10 2 1 Power Source for I O Modules 10 3 10 3 Using the PSIO with Multiple I O Modules 10 4 10 3 1 Steps for Attaching Multiple I O Modules 10 5 10 4 Factory Settings and Reset Button 10 6 10 5 Analog Transducer Signal Output Modules 10 7 10 5 1 Overview 10 7 10 5 2 Normal Mode 10 8 10 6 Analog Input Modules 10 9 10 6 1 Overview 10 9 10 6 2 Normal Mode 10 10 10 7 Digital Dry Contact Relay Output Form C Module 10 11 4 Electro Industries GaugeTech Doc E151701 TOC 4 The Leader In Power Monitoring and Smart Grid Solutions Table of Contents 10 7 1 Overview 10 11 10 7 2 Communication 10 12 10 7 3 Normal Mode 10 12 10 8 Digital Solid State Pulse Output KYZ Module 10 13 10 8 1 Overview 10 13 10 8 2 Communication 10 14 10 8 3 Normal Mode 10 14 10 9 Digital Status Input Module 10 16 10 9 1 Overview 10 16 10 9 2 Communication 10 17 10 9 3 Normal Mode 10 17 11 Electrical Installation 11 1 11 1 Considerations when Installing Meters 11 1 11 2 Blade Configuration for for Forms 9S 36S and 45S 11 5 11 3 Wiring Diagrams 11 6 11 4 9S Meter Mounted in S A Adapter 11 24 12 Switchboard Meter 12 1 12 1 Introduction 12 1 12 2 Labels 12 2 12 3 Specifications and Dimensions 12 3 12 4 Installation 12 6 12 5 Wiring Diagrams 12 8 13 Meter Calculations 13 1 13 1 Measurements and Calculations 13 1 13 2 Demand Integr
15. 8AI3 0 5VDC 8 Analog 144 2 3VA Inputs 8AI4 0 10VDC 8 Analog 148 2 3VA Inputs 4RO1 4 Latching Relay 156 2 7VA Outputs 4PO1 4 KYZ Pulse Outputs 160 2 7VA 8DI1 8 Status Inputs 164 1 0VA Wet Dry 2 Add together the VA Ratings for the I O modules in use to determine total power needed 3 Each PSIO supplies 12 VA 12VDC For details on the PSIO see sections 10 2 1 and 10 3 Electro Industries GaugeTech The Leader In Power Monitoring and Smart Grid Solutions Doc E151701 5 15 5 Serial Communication Wiring NOTE For 24 or 48 VDC applications EIG recommends the PB1 power supply Example order number PB1 D 12VO PB1 If you are using a PSIO for 125V AC DC input or PB1 your maximum VA is 12 5 3 10 Remote Communication Over Telephone Lines Using the RS485 Port Use modems dedicated or dial up when devices are at great distances EIG recommends using RS485 wiring with a Modem Manager PC at office Originate Modem Telephone Line Remote Modem Nexus 1262 1272 Meter Null Modem Adapter RS232 to RS485 Not required if Modem Manager is used Converter Modem Manager Recommended Figure 5 11 Remote RS485 Connections Use Port 1 or Port 4 for RS485 communication The link using RS485 is viable for up to 4000 feet 1219 meters Use Communicator EXT software to set the port s baud rate to the appropriate speed for your hardware and or network and enable Modbus
16. Display Display Display Serial DSP Comm DSP Comm Monitor Electro Industries GaugeTech Doc E151701 The Leader In Power Monitoring and Smart Grid Solutions 9 13 9 Using the External Displays 9 7 Display Features Mode Use the Mode button to access the Display Features Mode from other modes Use the Up Down arrows to navigate from group to group within this mode See Section 9 8 for a Navigation map of the Display Features mode Group 1 Reset Max Min Press Enter to reset the Max and Min values NOTE If the Password Protection feature has been enabled through Communicator EXT software you will need to enter a password to reset the Max Min readings Follow this procedure 1 Press Enter 2 Enter the password one character at a time by pressing the Up or Down arrows Each password character begins as an A Press the Up arrow to increment the character from A Z and then from 0 9 Press the Down arrow to decrement the character from A to 9 0 and then from Z A 3 Press Set to enter each character in the password 4 When the entire password is shown on the Display screen press Enter 5 Once the password is entered correctly press Enter again to reset the Max Min values Group 2 Reset Energy Press Enter to reset the Energy readings NOTE If the Password Protection feature has been enabled through Communicator EXT software you will need to enter a password to reset the Energy read
17. Doc E151701 3 19 3 Operating Instructions Use the Modbus type information as shown below Register Contents are The data is Divi 3 5 Type F5 Secondary 1 Cycle RMS Voltage or Current Length 2 Registers 4 bytes i User Multiplier Range 1 048 576 V 0 V2 or 65536 12 d12 1262 or 1272 L E FT Ratio m Unit 1 4906 V secondary or 1 65536 Af sedbndary 1262 or 1272 CT Ratio E These registers together are a four byte unsigned integer Conversion into secondary voltage or current involves multiplying by the appropriate scale and x Poa a ope ae taking the square root of that value Data Format i N Depending on the unit and hardware the range and unit of voltage readin Numerical Sign differs For a Nexus 1262 72 meter the range goes to 1 048 576 V with a unit of 1 4096 V In the example above you would find the number of registers per item the fact that the data is unsigned and scaling information from the Modbus type information The fields on the left underneath the Multiply by fields let you set up how the data will be displayed for example specifying if the data is a number or some other value whether you want the sign to display for signed data whether you want the data scaled the number of digits and decimal places in the field Click the pull down menus to see alternate choices for the fields The entries you make affect all of the items on the screen The table that follows shows
18. Switchboard Meter SERVICE 2 5 EL WYE 2 PTs 3 CTs 3 YKZ YKZ EE ee S 1 CH1 CH2 CH3 CH4 Gateway OW SO SOM 8765432710 N IRIG B COMI COM4 HIGH SPEED 1 Electro Industries i GaugeTech www electroind com 2 Caution Power Supply Input on new units is configured differently Please check wiring carefully v1 v3 LOAD Figure 12 18 36Z 2 5 Element Wye 2 PTs 3 CTs e The protective ground connections for the transformers are omitted in the diagrams and are not required for the meter to work properly However we strongly recommend those connections to reduce shock hazard Shorting switches blocks for the current transformers secondary side are also not shown To prevent electrical shock we recommended you use such shorting switches blocks Make sure the CTs second ary are shorted before disconnecting them from the meter s current input terminals Electro Industries GaugeTech rue E Doc E151701 12 19 The Leader In Power Monitoring and Smart Grid Solutions 12 Switchboard Meter SERVICE DELTA 3WIRE 2 PTs 3 CTs AR ZA oz S 1 CH1 CH2 CH3 CH4 Gateway CARS TERROIR RER ES IG B _COM1 COM4 HIGH SPEED ower In Electro Industries 2 1 i GaugeTech www electroind com Caution Power Supply Input on new units is configured differently Please check wiring carefully la Hi Ib Hi lc H
19. kWh Recerred 2 TOU Current Morth Regeter 2 kwh Delivered n TOU Curent Morth Register 2 kWh Received 3 Opica Pest Settings pics iing 18 THD Cumert C 10 Phase to Neutral Volage 11 Phase to Phase Volsge 12 Phassoes 13 THD Votsge A 14 THD Votsge amp Buttons that 15 THO Votage C 16 THD Onet let you 17 THO Cuarerk B Create custom display screens Edit display screens or Remove display screens from the available screens list e the order of display screens Buttons that let you Change c isplay screens from a View mode in a View mode or Remove d 6 Using the buttons on the bottom of the screen you can e Retrieve display settings from the connected meter by clicking Retrieve from Display e Update the connected meter s display settings by clicking Update Display The meter reboots and you see a message on the PC screen Device LCD Display Programmable Settings Updated e Save any changes you have made to display settings by clicking Save e Load a previously saved LCD display file by clicking Load and select the file you want to load into this screen it is a nds2 file e Return to the previous screen without saving any changes by clicking Cancel View online instructions for using this screen by clicking Help The leftmost column lists all of the Available display screens Before you ve used the Display Configurator you will only see the pre defined display screens in the list Once
20. no PTs 3 CTs e The protective ground connections for the transformers are omitted in the diagrams and are not required for the meter to work properly However we strongly recommend those connections to reduce shock hazard e Shorting switches blocks for the current transformers secondary side are also not shown To prevent electrical shock we recommended you use such shorting switches blocks Make sure the CTs second ary are shorted before disconnecting them from the meter s current input terminals Cj Electro Industries GaugeTech Doc E151701 12 12 The Leader In Power Monitoring and Smart Grid Solutions 12 Switchboard Meter SERVICE DELTA 4WIRE 3 PTs 3 CTs LIT 3 YKE le eK cee 80 0 cH1 cH2 cH3 cHa Gateway s00 s00 8 7 65 4 32 1C IRIG B COMI coma HIGH SPEED ower In Electro Industries 2 1 i GaugeTech www electroind com Caution Power Supply Input on new units is configured differently Please check wiring carefully Ve la Hi Itb Hi lc Hi e v1 e v2 e e e v3 e LOAD Figure 12 12 9Z Transformer Rated 4 Wire Delta 3 PTs 3 CTs e The protective ground connections for the transformers are omitted in the diagrams and are not required for the meter to work properly However we strongly recommend those connections to reduce shock hazard e Shorting switches blocks for the current transformers secondary sid
21. the actual waveform as a spectral view of the harmonic content or a tabular view showing the magnitude and phase shift of each harmonic value Data collected with waveform capture is typically not saved to memory Waveform capture is a real time data collection event Waveform capture should not be confused with waveform recording that is used to record multiple cycles of all voltage and current waveforms in response to a transient condition 1 5 Power Quality Power quality can mean several different things The terms power quality and power quality problem have been applied to all types of conditions A simple defini tion of power quality problem is any voltage current or frequency deviation that results in mis operation or failure of customer equipment or systems The causes of power quality problems vary widely and may originate in the customer equipment in an adjacent customer facility or with the utility Electro Industries GaugeTech The Leader In Power Monitoring and Smart Grid Solutions Doc E151701 1 Three Phase Power Measurement In his book Power Quality Primer Barry Kennedy provided information on different types of power quality problems Some of that information is summarized in Table 1 3 Cause Disturbance Type Source Impulse transient Transient voltage disturbance Lightning sub cycle duration Electrostatic discharge Load switching Capacitor switching Oscillato
22. 17 2 Meter Overview 2 1 2 1 The Nexus 1262 1272 Multi parameter Revenue Meter 2 1 2 2 Accu Measure Technology Theory of Operation 2 1 2 3 Advanced Measurement Functionality 2 4 2 3 1 Advanced Revenue Billing Capability 2 4 2 3 2 Communications and 1 0 Capabilities 2 6 2 3 3 Display Screens 2 8 2 3 4 Additional Switches 2 8 2 3 5 Nexus External I O Modules 2 8 2 3 6 Optional P40N P40N P41N and P43N LED Remote Displays 2 8 2 4 Nexus 1262 1272 Meter Forms 2 9 2 5 Nexus 1262 1272 Meter Accuracy 2 10 2 6 Nexus 1262 1272 Meter Specifications Overview 2 10 2 7 Nexus 1262 1272 Meter Logging Specifications 2 15 2 8 DNP V3 00 Level 2 2 15 3 Operating Instructions 3 1 3 1 Nameplate Information 3 1 3 2 Basic Operation 3 4 3 3 LCD Display Information 3 6 3 3 1 Finding Your Display s Firmware Versions 3 9 3 Electro Industries GaugeTech l Doc E151701 TOC 1 The Leader In Power Monitoring and Smart Grid Solutions Table of Contents 3 4 Nexus 1262 1272 Programmable Display Navigation Map 3 10 3 5 Using the Display Configurator 3 11 3 6 Using the Base Programmable Display 3 28 3 6 1 Pre Programmed Display Screens 3 30 4 Performing Meter Testing 4 1 4 1 Testing Tools 4 2 4 1 1 Test Pulse LED 4 2 4 1 2 LCD Display 4 3 4 2 Test Mode 4 3 4 2 1 Entering Test Mode 4 4 4 2 2 Using Test Mode 4 4 4 2 3 Test Mode Preset Accumulators 4 5 4 2 4 Exiting Test Mode 4 8 5 Serial Communicat
23. Appendix B in the Commu nicator EXT User Manual for instructions Loss compensation values must be calculated based on the meter installation As a result transformer loss values must be normalized to the meter by converting the base Voltage and current and taking into account the number of elements used in the 4 Electro Industries GaugeTech Doc E151701 8 4 The Leader In Power Monitoring and Smart Grid Solutions 8 Transformer Loss Compensation metering installation For three element meters the installation must be normalized to the phase to neutral Voltage and the phase current in two element meters the installation must be normalized to the phase to phase Voltage and the phase current This process is described in the following sections 8 2 1 Loss Compensation in Three Element Installations Loss compensation is based on the loss and impedance values provided on the trans former manufacturer s test report A typical test report will include at least the follow ing information e Manufacturer e Unit serial number e Transformer MVA rating Self Cooled e Test Voltage e No load loss watts e Load loss watts or full load loss watts e Exciting current 100 Voltage e Impedance The transformer MVA rating is generally the lowest MVA rating the self cooled or OA rating of the transformer winding The test Voltage is generally the nominal Voltage of the secondary or low Voltage winding For three phase tran
24. Chain Connection 4 Electro Industries GaugeTech Doc E151701 5 we The Leader In Power Monitoring and Smart Grid Solutions 5 Serial Communication Wiring Slave device 1 Long stub results T connection that can cause i interference problem Master device ft Last Slave device N Slave device 2 SH_ Twisted pair shielded SH cable Earth Connection preferably at single location Twisted pair shielded SH cable Twisted pair shielded SH cable Slave device 1 Slave device 2 STAR connection can cause interference problem Slave device 3 Twisted pair shielded SH cable Twisted pair shielded SH cable Figure 5 6 Incorrect T and Star Topologies 5 3 2 Using the Unicom 2500 The Unicom 2500 provides RS485 RS232 conversion In doing so it allows the Nexus meter to communicate with a PC or other device See the Unicom 2500 Installation and Operation Manual for additional information You can order the Unicom 2500 from EIG s webstore www electroind com store Select the Communi cations Products category from the left side of the webpage Figure 5 7 illustrates the Unicom 2500 connections for RS485 Electro Industries GaugeTech The Leader In Power Monitoring and Smart Grid Solutions Doc 151701 5 7 5 Serial Communication Wiring RS232 Port UNICOM 2500 TX RX TX RX SH Jumpe
25. DELTA 4WIRE 2PTs 2CTs VOR l en l es l eut SE cH1 che cH3 cHa Gateway VETSOC SOM 5 7 Sub IG B COMI coma HIGH SPEED ower In Electro Industries 2 1 i GaugeTech www electroind com Caution Power Supply Input on new units is configured differently Please check wiring carefully v1 e e V3 e e e v2 LOAD Figure 12 14 9Z Transformer Rated 3 Wire Delta 2 PTs 2 CTs e The protective ground connections for the transformers are omitted in the diagrams and are not required for the meter to work properly However we strongly recommend those connections to reduce shock hazard e Shorting switches blocks for the current transformers secondary side are also not shown To prevent electrical shock we recommended you use such shorting switches blocks Make sure the CTs second ary are shorted before disconnecting them from the meter s current input terminals 4 Electro Industries GaugeTech Doc E151701 12 15 The Leader In Power Monitoring and Smart Grid Solutions 12 Switchboard Meter SERVICE DELTA 3WIRE NO PTs 2 CTs VOR OK one SE cH1 cH2 cH3 cHa Gateway UO ACE LAS ee E ic B com1 coma HIGH SPEED ower In Electro Industries 2 1 i GaugeTech o www electroind com Caution Power Supply Input on new units is configured differently Please check wiring carefully v1 a e v2 o V3 o LOA
26. Electroindustries GaugeTech www electroind com Figure 10 5 PSIO Used with Multiple I O Modules Power Mounting Bracket NOTE As shown the PSIO mus be to the right of I O Modules when viewing the sie label Electro Industries GaugeTech The Leader In Power Monitoring and Smart Grid Solutions Doc E151701 10 4 10 External 1 0 Modules 10 3 1 Steps for Attaching Multiple I O Modules 1 Each I O module in a group must be assigned a unique address See the Communicator EXT User Manual for details on configuring and programming the 1 0 Modules 2 Determine how many power sources such as the PSIO are needed for the number of modules in use See Sections 5 3 9 for details 3 Starting with the left module and using a slotted screw driver fasten the first I O Module to the left Mounting Bracket The left Mounting Bracket is the one with the PEM Fasten the internal screw tightly into the left Mounting Bracket 4 Next slide the female RS485 port into the male RS485 side port to connect the next I O module to the left module Fasten together enough to grab but do not tighten 5 One by one combine the modules together 6 Attach the PSIO power supply to the right of the group of I O Modules it is supplying with power NOTE The PB1 can also be used as a Low Voltage Power Supply It must be mounted separately The PB1 should be ordered with a 12V output for this application 7 Once you have co
27. Figures 12 9 through 12 20 NOTE For special requirements contact our service department CAUTI ON All wiring should be done by a licensed professional Actual installation procedures materials equipment and connections must conform to applicable codes and standards See Section 11 1 for important safety considerations ATTENTION Tout travail de c blage doit tre effectu par un professionnel agr Les proc dures mat riaux quipements et connexions d installation actuels doivent tre conformes aux codes et aux normes applicables Pour voir d importantes exi gences de s curit vous r f rer Section 11 1 4 Electro Industries GaugeTech Doc E151701 12 8 l The Leader In Power Monitoring and Smart Grid Solutions 12 Switchboard Meter REMARQUE pour Tous les sch mas de c blage e Les connexions de garde pour les transformateurs sont omises dans les sch mas et ne sont pas n cessaires afin que le compteur fonctionne correctement Toutefois nous vous recommandons fortement ces connexions pour r duire les risques de choc e Les commutateurs de court circuit blocs pour le c t secondaire des transforma teurs de courant ne sont galement pas repr sent s Pour viter les chocs lec triques nous vous recommandons d utiliser ces commutateurs de court circuit blocs Assurez vous que les c t s secondaires des transformateurs de courant sont court circuit s avant de les d connecter des bornes d
28. Industries GaugeTech Doc E151701 The Leader In Power Monitoring and Smart Grid Solutions 9 Using the External Displays e Maximum Current e Minimum Current e Current THD e Current Maximum THD e Current Minimum THD e Current Calculated N Measured N e Maximum Current Calculated N Measured N Group 4 Watt VAR Use the Left Right arrows to access the following readings in order e kWatt kVAR e Maximum kWatt kVAR CoIn kVAR e Maximum kWatt kKVAR CoIn kVAR Block Fixed Window Average Maximum kWatt kVAR CoIn kVAR e Predictive Rolling Sliding Window Maximum kWatt kVAR CoIn kVAR Group 5 VA PF Frequency Use the Left Right arrows to access the following read ings in order e kVA PF lag Hz e Maximum kVA Hz e Minimum kVA Hz e Maximum Quadrant 1 Total PF e Minimum Quadrant 1 Total PF e Maximum Quadrant 2 Total PF e Minimum Quadrant 2 Total PF a 3 Electro Industries GaugeTech Doc E151701 The Leader In Power Monitoring and Smart Grid Solutions 9 Using the External Displays e Maximum Quadrant 3 Total PF e Minimum Quadrant 3 Total PF e Maximum Quadrant 4 Total PF e Minimum Quadrant 4 Total PF Group 6 Delivered Energy Use the Left Right arrows to access the following read ings in order e kWatthr Quadrant 1 Quadrant 4 Primary e kVARhr Quadrant 1 Primary e kVARhr Quadrant 4 Primary Group 7 Received Energy Use the Left Right arrows to access
29. Modem Combination 5 31 5 6 1 Hardware Overview 5 31 5 6 2 Hardware Connection 5 31 5 7 Factory Settings 5 33 6 Hardware Installation 6 1 6 1 Mounting the Nexus Socket Meter 6 1 6 1 1 Cable Color Key 6 5 6 2 Internal Battery Installation and Maintenance 6 7 6 2 1 Battery Safety and Disposal 6 10 6 3 Mounting the External Displays 6 10 6 4 Mounting the Nexus External I O Modules 6 13 7 Time of Use Function 7 1 7 1 Introduction 7 1 7 2 The Nexus Meter s TOU Calendar 7 1 7 3 TOU Frozen and Active Registers 7 2 7 4 Updating Retrieving and Replacing TOU Calendars 7 2 7 5 Daylight Savings and Demand 7 3 4 3 Electro Industries GaugeTech Doc E151701 TOC 3 The Leader In Power Monitoring and Smart Grid Solutions Table of Contents 8 Transformer Loss Compensation 8 1 8 1 Introduction 8 1 8 2 Nexus 1262 1272 Meter s Transformer Loss Compensation 8 4 8 2 1 Loss Compensation in Three Element Installations 8 5 8 2 1 1 Three Element Loss Compensation Worksheet 8 6 9 Using the External Displays 9 1 9 1 Overview 9 1 9 2 Nexus P40N P40N LED External Display 9 1 9 3 Dynamic Readings Mode 9 6 9 4 Navigation Map of Dynamic Readings Mode 9 10 9 5 Nexus Information Mode 9 11 9 6 Navigation Map of Nexus Information Mode 9 13 9 7 Display Features Mode 9 14 9 8 Navigation Map of Display Features Mode 9 16 9 9 Optional P4ON LED External Remote Display Specifications 9 17 10 External 1 O Modules 10 1
30. Monitoring and Smart Grid Solutions 5 Serial Communication Wiring 2 You will see the Device Profile Communications Settings screen Device Profile Communications Settings Port 4 Ext Devices Addre Baud Data Bits Parity Stop Bits Tx Protocol Protocol Modbus RTU bd Modbus ASCII Mode Network Settings If Network Option was purchased IP Address Subnet Rings 9600 In the Network Settings section middle of the screen enter the following data provided by your Systems Administrator IP Address 10 0 0 1 Example Subnet Mask 255 255 255 0 Example Default Gateway 0 0 0 0 Example Electro Industries GaugeTech Doc E151701 The Leader In Power Monitoring and Smart Grid Solutions 5 Serial Communication Wiring 3 Click the Advanced Settings button to further configure the Network connection The Advanced Network Option Settings screen opens Advanced Network Option Settings Computer Name DNS Firmware Update Alarm Email INP100 102 GE Protocol EGD DNP for LANAVAN FTP Client INP100 1 02 Services amp Security DHCP INP1 00 102 Services re The tabs at the top of the screen let you navigate between settings Depending on your meter s configuration you may not need to program all of the settings shown here a The first tab is Services amp Security shown above Click the options to enable them for the Network option e g to enable the Web server click t
31. Nexus 1262 1272 Programmable Unless Scrolling is Stopped all screens assigned to the mode Display Navigation Map scroll every 7 seconds EEEL Swipe Magnet Twice for Mode 3 Press Test Button from any Mode Press Test Butto from any Mode POWER UP MODE Startup Screen and Scrolling Device Status Information SELECT COMPENSATION TEST MODE Press Test Button to scroll through 8 Test screens Press and HOLD Test Button to exit Test mode and return to Mode 1 Twice for Mode 1 Swipe Magnet Swipe Magnet over Mode Switch over Mode Switch over Mode Switch Once for Mode 2 Once for Mode 3 Once for Mode 1 Twice for Mode 2 Press Test Button from any Mode Modes 2 and 3 return to Mode 1 after a user set amount of time Select Transformer Loss and CTPT Compensation Press Test Button to view options in order ssssss Transfomer Loss Only Both CTPT and Transformer Loss No Compensation CTPT Only Exit Do Not Enter Test Mode Press and HOLD Test button on the option you want Test Mode returns to Mode 1 after a user set amount of time Electro Industries GaugeTech L __ Doc The Leader In Power Monitoring and Smart Grid Solutions E151701 3 10 3 Operating Instructions 3 5 Using the Display Configurator The Nexus 1262 1272 meter with appropriate firmware User Programmable LCD Display Run Time Firmware version 100 LCD Display Boot v
32. Ports button and select the USB COM Port number from the drop down list 6 Protocol should be Modbus RTU 7 Flow Control should be None 5 Electro Industries GaugeTech Doc E151701 G lt 5 The Leader In Power Monitoring and Smart Grid Solutions 9 Using the External Displays 8 Echo Mode should be No Echo 9 Click Connect The software connects to the meter through the P40N Refer to the Communicator EXT User s Manual for programming instructions Click Help gt Contents from the Communicator EXT Title Bar to view the manual online 9 3 Dynamic Readings Mode The External Display puts itself in the Dynamic Readings Mode upon power up Use the MODE button to access the Dynamic Readings from other Modes Use the UP DOWN arrows to navigate from Group to Group within this Mode See Section 9 4 for a Navigation map of the Dynamic Readings Mode Group 1 Phase to Neutral Voltages Use the Left Right arrows to access the following readings in order Volts AN BN CN e Maximum Volts AN BN CN e Minimum Volts AN BN CN Volts AN BN CN THD Volts AN BN CN Maximum THD Volts AN BN CN Minimum THD Group 2 Phase to Phase Voltages Use the Left Right arrows to access the follow ing readings in order e Volts AB BC CA e Minimum Volts AB BC CA e Maximum Volts AB BC CA Group 3 Current Use the Left Right arrows to access the following readings in order e Current A B C Electro
33. access Test Mode The Reset button is used to reset Demand 2 3 5 Nexus External I O Modules A variety of optional analog or digital I O modules mount externally to the Nexus 1262 1272 Socket meter The Nexus 1262 1272 unit does not supply power to I O modules Use a power supply such as EIG s PSIO to power optional I O modules See Chapter 10 for details on installation and use of the Nexus External I O modules 2 3 6 Optional P40N P40N P41N and P43N LED Remote Displays The Nexus 1262 1272 Socket meter features a back lit LCD display built into the face of the meter In addition Electro Industries offers optional external LED displays powered by a power supply such as the PSIO The P40N and legacy P40N P41N and P43N displays provide easy access to information stored in the meter if an additional display is required for remote access See Chapter 9 for further details 3 Electro Industries GaugeTech The Leader In Power Monitoring and Smart Grid Solutions Doc E151701 2 8 2 Meter Overview 2 4 Nexus 1262 1272 Meter Forms The Nexus 1262 1272 Socket meter offers three supported S Based meter forms based on the rated Voltage and hookup required by the user Below are the form specifications Form 9S can be ordered in an A Base Order Form 9A See Chapter 11 for corresponding Wiring diagrams and Appendix B for Blade configurations The Switchboard Meter offers two supported Z Based fo
34. combination of the add subtract setting and the directional definition of power flow also in the profile to determine how to handle the losses Losses will be added to or subtracted from depending on whether add or subtract is selected the Received Power flow For example if losses are set to Add to and received power equals 2000 kW and losses are equal to 20kW then the total metered value with loss compensation would be 2020 kW for these same settings if the meter measured 2000 kW of delivered power the total metered value with loss compensation would be 1980 kW Since transformer loss compensation is the more common loss compensation method the meter has been designed for this application Line loss compensation is calculated in the meter using the same terms but the percent values are calculated by a different methodology Nexus meter transformer loss compensation e Performs calculations on each phase of the meter for every measurement taken unbalanced loads are handled accurately e Calculates numerically eliminating the environmental effects that cause inaccura cies in electromechanical compensators e Performs bidirectional loss compensation e Requires no additional wiring the compensation occurs internally e Imposes no additional electrical burden when performing loss compensation The Leader In Power Monitoring and Smart Grid Solutions 4 Electro Industries GaugeTech Doc E151701 8 3 8 Transformer
35. defined or Pre defined with custom labeling e You can only change the screen number for a pre defined screen see example screen on the previous page but if you are creating a new screen based on a pre defined screen you can select the pre defined with custom labeling button to change the title as well as the number of the screen Refer to the table on the previous page for editing limitations e For a pre defined screen with custom labeling you can change the screen num ber and also the screen label See the example screen that follows Refer to the table on the previous page for editing limitations NOTES e The Screen number field is a three digit numeric field Use numbers between 1 and 999 to display the number on the LCD display screen use numbers between 1000 and 1999 to not display the number on the LCD display screen 3 Electro Industries GaugeTech Doc E151701 3 53 The Leader In Power Monitoring and Smart Grid Solutions 3 Operating Instructions e The Harmonics Phasors and Line Segment screens never display their number on the LCD display screen e Depending on the pre defined screen you have between 0 3 lines for screen label entry Screen labels can be up to 16 characters per line Below is an example of a Pre defined with custom labeling screen LCD Screen Selection Seinen Type SEE You can change the Prodet screen number OE CIE z You can enter a screen label 3 Aft
36. easy to use access to the information stored in the Nexus meter Plug the Nexus external display into the Port 1 or Port 4 wiring connection using the RS485 cable supplied see Chapter 5 for wiring details The display operates at 9600 baud To use the display on another port configure that port to operate at 9600 baud using Communicator EXT software see the Communicator EXT User Manual for instructions 9 2 Nexus P40N P40N LED External Display The Nexus P40N P40N LED external display has three modes e Dynamic Readings Mode sections 9 3 and 9 4 e Nexus Information Mode sections 9 5 and 9 6 e Display Features Mode sections 9 7 and 9 8 Each Mode is divided into Groups Most Groups are further broken down into Readings e Use the MODE button to scroll between Modes e Use the UP DOWN arrows to scroll from Group to Group within each Mode e Use the LEFT RIGHT arrows to scroll from Reading to Reading within each Group Use Communicator EXT software to Flash Update the P40N P40N external display See the Communicator EXT User Manual for instructions 4 Electro Industries GaugeTech Doc E151701 9 1 The Leader In Power Monitoring and Smart Grid Solutions 9 Using the External Displays The Nexus P40N LED external display has a USB port on the front for direct data downloads You can connect to the USB port with Communicator EXT to poll and con figure the meter attached to the display To use the US
37. entr e de courant du compteur Electro Industries GaugeTech Doc E151701 The Leader In Power Monitoring and Smart Grid Solutions 12 9 12 Switchboard Meter SERVICE WYE 4WIRE NO PTs 3 CTs LIT 3 lt lt TEL PR l es TA S 1 CH1 CH2 CH3 CH4 Gateway GG SO Sie tay ETS a S N IRIG B _ COM1 COM4 HIGH SPEED 1 Electro Industries i GaugeTech www electroind com 2 Caution Power Supply Input on new units is configured differently Please check wiring carefully Ib Hi lc Hi v1 e v2 e V3 o N e LOAD Figure 12 9 9Z Transformer Rated Wye no PTs 3 CTs e The protective ground connections for the transformers are omitted in the diagrams and are not required for the meter to work properly However we strongly recommend those connections to reduce shock hazard e Shorting switches blocks for the current transformers secondary side are also not shown To prevent electrical shock we recommended you use such shorting switches blocks Make sure the CTs second ary are shorted before disconnecting them from the meter s current input terminals Electro Industries Gaugetech Doc E151701 12 10 The Leader In Power Monitoring and Smart Grid Solutions 12 Switchboard Meter SERVICE WYE 4WIRE 3 PTs 3 CTs TITI 3 YKZIYKZIVKZIYKZ SW CH1 che ona cha Gateway OM SOMSOG F765 4327 N IRIG B _COM1 c
38. extremely versatile communi cation tool It e Adheres to IEEE 802 3 Ethernet standard using TCP IP e Utilizes simple and inexpensive 100BaseT wiring and connections e Plugs right into your network using the built in RJ45 jack e Is programmable to any IP address subnet mask and gateway requirements e Communicates using the industry standard Modbus TCP protocol or DNP3 WAN LAN 4 Electro Industries GaugeTech Doc E151701 5326 The Leader In Power Monitoring and Smart Grid Solutions 5 Serial Communication Wiring 5 5 2 Hardware Connection Use standard RJ45 10 100BaseT cable to connect with the Nexus meter The RJ45 line is inserted into the RJ45 port coming from the back of the meter with the INP200 Ethernet Option see Figure 6 2 Configure the Network settings using the following steps 1 Using Port 1 Port 4 RS485 connection or the optical port connect a PC to the meter An RS232 RS485 converter may be required e g Electro Industries Unicom 2500 2 Double click on Communicator EXT Software to open it 3 Click the Quick Connect or Connection Manager icon in the icon tool bar 4 Click the Serial Port button Make sure data matches the meter then click Connect Set the Network using the following steps 1 From the Device Profile menu click General Settings gt Communications gt and then click on one of the listed ports Electro Industries GaugeTech Doc E151701 The Leader In Power
39. fixed parameters for the Ethernet Modem Gateway are 8 Data Bits Even Parity 1 Stop Bit The Ethernet Modem s Gateway s Baud Rate and Delay Time are configurable The Leader In Power Monitoring and Smart Grid Solutions Ej Electro Industries GaugeTech Doc E151701 5 9 5 Serial Communication Wiring For more information on a meter with the INP202 Modem Ethernet Combo Card see Section 5 6 5 3 6 RS485 Connection Meter to the P40N P40N P41N P43N LED Display Connect the communication wires of the supplied RS485 cable to the meter s Port 1 or Port 4 Set the port s Baud Rate to 9600 Address to 1 Protocol to Modbus RTU and Mode to Slave using the communication software Insert the other end of the communication wires into the back of the first LED Display The Nexus 1262 1272 meter s power supply does not supply power to external displays You must use a power source such as the EIG PB1 12V See Section 10 2 1 for PSIO details RS485 communication is viable for up to 4000 feet 1219 meters Be sure to do the following 1 Connect the shield to the shield S terminal on the Display port The S terminal on the meter is used to reference the meter s port to the same potential as the source It is not an earth ground connection You may also connect the shield to earth ground at one point 2 Provide termination resistors at each end for longer runs typically 500 or more connected to the a
40. have between 0 to 2 lines for a screen label e If you selected 1 3 items or 1 Demand 1 Timestamp you will have two entry lines e If you selected 4 items you will have one entry line e If you selected 5 items you will not have any entry fields for a dis play screen label there won t be room on the screen for a label The Item entry fields allow you to specify the data you want to display on the LCD screen You can also enter a prefix optional for each line item and a suffix optional for all of the items on the display screen Example A screen containing phase to phase Voltages might have a single title Volts P P 3 lines of data with prefixes Vab Vbc Vca and the same suffix MV on all 3 lines The 1 Demand 1 Timestamp entry fields allow you to specify the Demand the timestamp and an optional status register The status register is not displayed on the LCD screen 4 To enter an item a Click on the Item label box Fields that open underneath the item allow you to enter the starting value of the Modbus Register containing the data for the item Use the Decimal value of the register See the screen below Refer to the Nexus 1252 1262 1272 Meter Modbus Manual for the 1262 1272 meter s Modbus Register Map The manual can be downloaded from EIG s website www electroind com pdf modbus2 pdf Modbus Holding Register Confiquration Item s Starting Register Address no 3 Electro Industries Gau
41. in two easy steps Minimal manual wiring is required to connect or disconnect the meter The Switchboard meter operates in the same way as the Socket meter There are a few differences between the two meter options e The labels on the face and the shroud of the meter will be slightly different depending on options selected see Section 12 2 for label detail 4 Electro Industries GaugeTech Doc E151701 12 1 The Leader In Power Monitoring and Smart Grid Solutions 12 Switchboard Meter e The wiring Forms are 9Z and 36Z and the wiring is different see Section 12 5 e Dimensions are different see Section 12 3 e Installation is different and even easier see Section 12 4 CAUTION The Power Supply Input on the Switchboard unit is configured differently Please check wiring carefully ATTENTION L entr e d alimentation de l unit du tableau est configur e dif f remment Veuillez v rifier le cablage avec soin 12 2 Labels The labels on the Switchboard meter are similar to those on the Socket meter Forms are 9Z and 36Z and there may be some additional items depending upon the options selected See Chapter 3 for a description of the components on the front and shroud labels UTILTIY COMPANY PRES Figure 12 2 Switchboard Meter Front View Mfg Date 2 2 2011 Serial Model Memory Options Freq KYZ Out Opt Comm No Optional Com Power Supply 56 82 8V AC Notes id www electroind com
42. measure temperature rises produced by an increase in current flowing through the meter A pointer moves in proportion to the temperature change providing a record of demand The pointer remains at peak level until a subsequent increase in demand moves it again or until it is manually reset The Nexus 1262 1272 mimics tradi tional meters to provide Thermal Demand readings Each second as a new power level is computed a recurrence relation formula is applied This formula recomputes the thermal demand by averaging a small portion of the new power value with a large portion of the previous thermal demand value The proportioning of new to previous is programmable set by an averaging interval The averaging interval represents a 90 change in thermal demand to a step change in power Predictive Window Demand Predictive Window Demand enables the user to forecast average demand for future time intervals The Nexus uses the delta rate of change of a Rolling Window Demand interval to predict average demand for an approaching time period The user can set a relay or alarm to signal when the Predictive Window reaches a specific level thereby avoiding unacceptable demand levels The Nexus 1250 1252 calculates Predictive Window Demand using the following formula Example Using the previous settings of 3 five minute intervals and a new setting of 120 prediction factor the working of the Predictive Window Demand could be described as fo
43. meter s current input terminals 3 Electro Industries GaugeTech Doc E151701 11 21 l The Leader In Power Monitoring and Smart Grid Solutions 11 Electrical Installation FORM 45S TRANSFORMER RATED SERVICE DELTA 4WIRE NO PTs 2CTs LINE i V3 V2 vi N 2 1 LOAD Figure 11 17 Form 45S 4 Wire Delta no PTs 2 CTs The protective ground connections for the transformers are omitted in the diagrams and are not required for the meter to work properly However we strongly recommend those connections to reduce shock hazard Shorting switches blocks for the current transformers secondary side are also not shown To prevent electrical shock we recommended you use such shorting switches blocks Make sure the CTs second ary are shorted before disconnecting them from the meter s current input terminals 3 Electro Industries GaugeTech Doc E151701 11 22 l The Leader In Power Monitoring and Smart Grid Solutions 11 Electrical Installation FORM 45S TRANSFORMER RATED SERVICE DELTA 4WIRE 3 2 PTs 2 CTs LINE V3 V2 V1 N 2 L 1 LOAD Figure 11 18 Form 45S 4 Wire Delta 2 PTs 2 CTs The protective ground connections for the transformers are omitted in the diagrams and are not required for the meter to work properly However we strongly recommend those connections to reduce shock hazard Shorting switches bloc
44. meter receives the time and interval the data is created For complete details download the appropriate DNP User Manual from our website at www electroind com gi Electro Industries GaugeTech The Leader In Power Monitoring and Smart Grid Solutions Doc E151701 2 Meter Overview This page intentionally left blank Electro Industries GaugeTech The Leader In Power Monitoring and Smart Grid Solutions Doc E151701 3 Operating Instructions 3 Operating Instructions 3 1 Nameplate Information The Nexus 1262 1272 Socket meter has its operating information represented on the nameplate which is located on the face of the meter see figure below Serial and Model numbers are on the Options label see next page Graphical LCD NET LUE Defined Area Form Factor Diagram BRWN EH Figure 3 1 Meter Showing Faceplate Elements The numbers in the figure represent 1 Multiply by Constant 2 Voltage Transformer Ratio PT Ratio 3 Current Transformer Ratio see Glossary 4 Primary Watt hour constant 5 Current class Electro Industries GaugeTech Doc E151701 3 4 The Leader In Power Monitoring and Smart Grid Solutions 3 Operating Instructions 6 Watt hour test constant 7 ANSI C12 20 Form Number 8 ANSI C12 20 Accuracy Class 9 Test Amperes Electro Industries Gauge ech The Leader in Power Monitoring and Control Model NEXUS 1272 S SWB2 20 60 SE IN
45. old battery by disconnecting it at the connector 4 Electro Industries GaugeTech Doc E151701 5 25 The Leader In Power Monitoring and Smart Grid Solutions 5 Serial Communication Wiring 2 Install the new battery by snapping it into the connector 3 Peel and stick the velcro adhesive somewhere outside the meter or use the old adhesive to fasten the battery in place NOTE Custom leads and Velcro mounting are not included in some earlier versions of the Switchboard Meter Call the EIG factory for installation replacement part BATT4384 5 5 INP200 Onboard Ethernet The 10 100BaseT Ethernet option INP200 is a fully customizable web server that uses XML to provide access to real time data via the Internet EIG s name for this dynamic system is Total Web Solutions The system incorporates a highly programma ble network card with built in memory that is installed in meters with the INP200 option Each card can be programmed to perform extensive monitoring functions The 100BaseT option is much faster than the 10BaseT option which does not offer Total Web Solutions 5 5 1 Hardware Overview A Nexus 1262 1272 meter with the 10 100BaseT Ethernet Option INP200 has all the components of the standard Nexus meter plus the capability of connection to a network through an Ethernet LAN or through the Internet via Modbus TCP DNP3 WAN LAN HTTP SMTP FTP and or DHCP The Internal Network Option of the Nexus meter is an
46. on the high Voltage side The need for loss compensated metering may also exist when the ownership changes several miles along a transmission line where it is simply impractical to install meter ing equipment Ownership may change at the midway point of a transmission line where there are no substation facilities In this case power metering must again be compensated This condition is shown in Figure 8 2 Cj Electro Industries GaugeTech Doc E151701 8 1 The Leader In Power Monitoring and Smart Grid Solutions 8 Transformer Loss Compensation No LI Li Point of Ownership Change Figure 8 2 Joint Ownership Line Meeting Requiring Loss Compensation A single meter cannot measure the losses in a transformer or transmission line directly It can however include computational corrections to calculate the losses and add or subtract those losses to the power flow measured at the meter location This is the method used for loss compensation in the Nexus meter Refer to Appen dix A in this manual and Appendix B of the Communicator EXT User Manual for detailed explanation and instructions for using the Transformer Line Loss Compensa tion feature of the Nexus 1262 1272 meter The computational corrections used for transformer and transmission line loss com pensation are similar In both cases no load losses and full load losses are evaluated and a correction factor for each loss level is calculated
47. on the Communicator EXT 3 0 button and click Run in the window that opens The software is installed ii Click on the USB Driver button click Run in the window that opens The P40N driver is installed 2 Connect the USB cable from your PC to the port using a USA A Male to USB B Male eae cable attach the USB A 4 connector to the PC and attach the USB B connector to the P40N USB port See Figure 6 1 Figure 6 1 USB B Male Connector and P40N USB Port Electro Industries GaugeTech Doc E151701 j The Leader In Power Monitoring and Smart Grid Solutions 9 Using the External Displays 3 Once the USB cable is connected to the P40N the display clears and the message USB in Use scrolls at the bottom of the display Additionally the USB LED icon lights up when the USB connection is being used You connect to the USB port using Communicator EXT software the same way you connect to a meter with the software Follow these instructions 1 Determine which port the PC s USB is using a On your PC click Start gt Settings gt Control Panel b Double click the System folder c Click the Hardware tab You will see the screen below mt mn Syren Fese Paterna U Garasi Compastes Name Device Manage The Device Manage kets ai the hadna devices wvetalind lt on yous Computer Une the Dece Manage to change the impete of ary dence Device Maragn Dove Sgro ints you make sure Cut rolled Greer ae Compat
48. one of the Time Settings lines to open the Time Settings screen b Set the Time Zone and Daylight Savings Select AutoDST or Enable and set dates c Click Update Device Profile to save the new settings See Chapter 4 of the Communicator EXT User s Manual for details 2 Before connection check that the date on the meter clock is correct or within 2 Months of the actual date This provides the right year for the clock GPS does not supply the year 3 Connect the terminal of the Nexus meter to the terminal of the signal generating device connect the terminal of the Nexus meter to the terminal of the signal generating device Electro Industries GaugeTech Doc E151701 The Leader In Power Monitoring and Smart Grid Solutions 5 Serial Communication Wiring Troubleshooting Tip The most common source of problems is a reversal of the two wires If you have a problem try reversing the wires IRIG B Port IRIG B Time Signal Generating Device Figure 5 13 IRIG B Communication NOTE Please make sure that the selected clock can drive the amount of wired loads Electro Industries GaugeTech Doc E151701 The Leader In Power Monitoring and Smart Grid Solutions 5 Serial Communication Wiring 5 3 15 Time Synchronization Alternatives See the Communicator EXT User Manual for details IRIG B e All Nexus 1262 1272 meters are equipped to use IRIG B
49. operation 50 Hz is the approved frequency according to Flicker standards 60 Hz implementation is available and can be selected Remember the Voltage is normalized For 50 Hz the normalized Voltage is 230 V and for 60 Hz the normalized Voltage is 120 V e Select a Short Term Test Time PST time range from 1 to 10 minutes The standard measurement period is nominally 10 minutes e Select a Long Term Test Time PLT time range from 1 to 240 minutes The standard measurement is nominally 12 Pst periods 120 minutes Plt time must always be equal to or great than and a multiple of Pst time This is reflected in the available selections 3 Click OK when you are finished 14 4 Flicker Polling Screen 1 From the Communicator EXT Title bar select Real Time Poll gt Power Quality and Alarms gt Flicker You will see the screen shown below EN50160 IEC 61000 4 30 Flicker ms NnStantaneousi Short Term Long Term Star Reset 000110 PINST Voltage Reading St H Volts A Current Volts B Next PST Next PLT Volts C Frequency _ Base Current Base Voltage Flicker M onitoring Polling Flicker Countdown KE e EU Main screen This section describes the Main Screen functions These functions are found on the left side of the screen 5 Electro Industries GaugeTech Doc E151701 14 5 The Leader In Power Monitoring and Smart Grid Solutions 14 EN50160 IEC61000 4 15 Flicke
50. requiring both real power watts and reactive power VARs When the quadrature current Electro Industries GaugeTech The Leader In Power Monitoring and Smart Grid Solutions Doc 151701 1 12 1 Three Phase Power Measurement leads the voltage the load is requiring real power watts but is delivering reactive power VARS back into the system that is VARS are flowing in the opposite direction of the real power flow Reactive power VARS is required in all power systems Any equipment that uses magnetization to operate requires VARs Usually the magnitude of VARs is relatively low compared to the real power quantities Utilities have an interest in maintaining VAR requirements at the customer to a low value in order to maximize the return on plant invested to deliver energy When lines are carrying VARs they cannot carry as many watts So keeping the VAR content low allows a line to carry its full capacity of watts In order to encourage customers to keep VAR requirements low some utilities impose a penalty if the VAR content of the load rises above a specified value A common method of measuring reactive power requirements is power factor Power factor can be defined in two different ways The more common method of calculating power factor is the ratio of the real power to the apparent power This relationship is expressed in the following formula Total PF real power apparent power watts VA This formula calculat
51. shown To prevent electrical shock we recommended you use such shorting switches blocks Make sure the CTs second ary are shorted before disconnecting them from the meter s current input terminals Ci Electro Industries GaugeTech rue E Doc E151701 11 16 The Leader In Power Monitoring and Smart Grid Solutions 11 Electrical Installation FORM 36S TRANSFORMER RATED SERVICE WYE 4WIRE 3 2 PTs 3 CTs N LINE LOAD Figure 11 12 Form 36S 2 5 Element Wye 2 PTs 3 CTs The protective ground connections for the transformers are omitted in the diagrams and are not required for the meter to work properly However we strongly recommend those connections to reduce shock hazard Shorting switches blocks for the current transformers secondary side are also not shown To prevent electrical shock we recommended you use such shorting switches blocks Make sure the CTs second ary are shorted before disconnecting them from the meter s current input terminals 3 Electro Industries GaugeTech Doc E151701 11 17 l The Leader In Power Monitoring and Smart Grid Solutions 11 Electrical Installation FORM 45S TRANSFORMER RATED SERVICE WYE 4WIRE 3 NO PTs 3 CTs ee LINE 1 V3 V2 V1 N LOAD Figure 11 13 Form 45S Wye no PTs 3 CTs e The protective ground connections for the transformers are omitted i
52. to display Choose either a The number of items you want the LCD screen to display click one of the Item buttons b Display Demand and Timestamp fields click the 1 Demand 1 Timestamp button Electro Industries GaugeTech Doc E151701 3 16 The Leader In Power Monitoring and Smart Grid Solutions 3 Operating Instructions After you make your selection the left side of the screen changes to display entry fields for the Item s or Demand and Time Stamp information See the example screens below Custom Screen with 3 Item Fields LCD Screen Selection il The information for 5 these fields comes Display screen s sort from the meter s label field 2 re Binay PERSAN Modbus Register Map Unegred Pid Item entry fields click here to enter the Modbus Register containing the item This is where you can specify a multiplier for your data These fields let you specify Scaling and data display LCD Screen Selection Display screen See screen above label fields for explanation of the fields on the Ursages I right side of the screen Demand field Timestamp MM DD YY HHMMSS Status field does not display on the LCD screen Electro Industries GaugeTech Doc E151701 3 17 3 Operating Instructions The top field in the Screen Layout section is for the display screen label Title Depending on the number of items you select you will
53. verres et des v tements de protection appropri s sont recommand s AVERTI SSEMENT Pendant le fonctionnement normal du compteur Nexus 1262 1272 des tensions dangereuses suivant de nombreuses pi ces notamment les bornes et tous les transformateurs de courant branch s les transformateurs de ten sion toutes les sorties les entr es et leurs circuits Tous les circuits secondaires 5 Electro Industries GaugeTech Doc E151701 11 5 l The Leader In Power Monitoring and Smart Grid Solutions 11 Electrical Installation et primaires peuvent parfois produire des tensions de l tal et des courants vitez le contact avec les surfaces sous tensions Avant de faire un travail dans le compteur assurez vous d teindre l alimentation et de mettre tous les circuits branch s hors tension Ne pas utiliser les compteurs ou sorties d appareil pour une protection pri maire ou capacit de limite d nergie Le compteur peut seulement tre utilis comme une protection secondaire Ne pas utiliser le compteur pour application dans laquelle une panne de compteur peut causer la mort ou des blessures graves Ne pas utiliser le compteur ou pour toute application dans laquelle un risque d incendie est susceptible Toutes les bornes de compteur doivent tre inaccessibles apr s l installation Ne pas appliquer plus que la tension maximale que le compteur ou appareil relatif peut r sister R f rez vous au compteur ou aux tiqu
54. 0 1 17 6 09 8 70 EF 7 36 9 60 1 00 8 26 10 70 1 17 9 43 11 80 1 33 10 76 12 50 0 83 12 42 13 50 0 83 12 42 14 70 1 17 13 59 15 80 1 33 14 92 Table 1 2 Power and Energy Relationship over Time As in Table 1 2 the accumulated energy for the power load profile of Figure 1 7 is 14 92 kWh Demand is also a time based value The demand is the average rate of energy use over time The actual label for demand is kilowatt hours hour but this is normally reduced to kilowatts This makes it easy to confuse demand with power but demand is not an instantaneous value To calculate demand it is necessary to accumulate the energy readings as illustrated in Figure 1 7 and adjust the energy reading to an hourly value that constitutes the demand In the example the accumulated energy is 14 92 kWh But this measurement was made over a 15 minute interval To convert the reading to a demand value it must be normalized to a 60 minute interval If the pattern were repeated for an additional three 15 minute intervals the total energy would be four times the measured value or 4 Electro Industries GaugeTech The Leader In Power Monitoring and Smart Grid Solutions Doc E151701 1 Three Phase Power Measurement 59 68 kWh The same process is applied to calculate the 15 minute demand value The demand value associated with the example load is 59 68 kWh hr or 59 68 kWd Note that the peak instantaneous value of power is 80 k
55. 1 5 4 Wire Delta 3 PTs 3 CTs 11 6 i 4 Wire Delta no PTs 2 CTs 11 7 4 Wire Delta 2 PTs 2 CTs 11 8 3 Wire Delta no PTs 2 CTs 11 9 3 Wire Delta 2 PTs 2 CTs 11 10 2 5 EL Wye no PTs 3 CTs Ua I La t 2 5 EL Wye 2 PTs 3 CTs 11 12 Wye no PTs 3 CTs 11 13 Wye 2 PTs 3 CTs 11 14 ass 3 wire Delta no PTs 2 CTs 11 15 3 wire Delta 2 PTs 2 CTs 11 16 4 wire Delta no PTs 2 CTs 11 17 4 wire Delta 2 PTs 2 CTs 11 18 9S in S A Form 9S Mounted in S A Adapter 11 19 showing connectors Table 11 1 Nexus 1262 1272 Meter Forms REMARQUE pour Tous les sch mas de c blage e Les connexions de garde pour les transformateurs sont omises dans les sch mas et ne sont pas n cessaires afin que le compteur fonctionne correctement Toutefois nous vous recommandons fortement ces connexions pour r duire les risques de choc 4 Electro Industries GaugeTech Doc E151701 11 6 l The Leader In Power Monitoring and Smart Grid Solutions 11 Electrical Installation e Les commutateurs de court circuit blocs pour le c t secondaire des transforma teurs de courant ne sont galement pas repr sent s Pour viter les chocs lec triques nous vous recommandons d utiliser ces commutateurs de court circuit blocs Assurez vous que les c t s secondaires des transformateurs de courant sont court circuit s avant de les d connecter des bornes d entr e de courant du compteur 4 Electro Industries GaugeTech
56. 2010 do not have the Display Configurator For these meters you can assign up to 16 pre defined screens per View mode Refer to Section 3 6 for program ming details NOTE See Section 3 3 1 for instructions on finding your display s firmware version Low Battery Lo Batt NVRam Internal Battery or Lo Batt Modem Modem Battery flashes on the screen every 10 15 seconds when the Internal or Modem Battery is running low or when it is not clicked into place properly See installation instructions in Section 6 2 Test Mode e Wh Test Same as kWh screen except in Wh instead of kWh e VARh Test Same as kVAR screen except in VARh Quadrants e VAh Test Same as kVAh screen except in VAh Quadrants e Watt Rolling Demand Test Delivered and Received e Watt Block Demand Test Delivered and Received 4 Electro Industries GaugeTech Doc E151701 3 7 The Leader In Power Monitoring and Smart Grid Solutions 3 Operating Instructions Initial Display Screens The Nexus 1262 1272 meter ships with initial display screens which scroll on the display as soon as you power up the meter The initial display screens are a sampling of the pre defined screens Typical initial display screens include e Meter Data including Boot Run DSP Boot DSP Run Serial Number Protect Enabled Baud e Wh Delivered e Wh Received e kVARh per Quadrant e kVAh per Quadrant e Rolling W Demand Delivered e Rolling W Demand Rec
57. 4 INPUT 5 INPUT 5 Max Power 1248 INPUT 6 INPUT 6 Input Voltage 12 604 DC o INPUT 7 INPUT 7 90 240 AC DC O INPUT 8 INPUTS Output Voltage 1244 DC RESET Electroindustries GaugeTech ana electroind com 1 73 4 4cm Figure 6 11 I O Modules with PSIO Power Supply Refer to Figure 6 12 and Section 5 3 8 for PSIO and I O Module wiring instructions Auxiliary Power PSIO is supplied 9 ae through pins 3 and 4 Shield o Connection though Oj SHIELD and to meter s Port 4 Figure 6 12 I O Module Wiring Detail The Leader In Power Monitoring and Smart Grid Solutions Gi Electro Industries GaugeTech Doc E151701 6 15 6 Hardware Installation This page intentionally left blank 4 Electro Industries GaugeTech Doc E151701 6 16 The Leader In Power Monitoring and Smart Grid Solutions 7 Time of Use Function 7 Time of Use Function 7 1 Introduction A Time of Use TOU usage structure takes into account the quantity of energy used and the time at which it was consumed The Nexus 1262 1272 meter s TOU function available with the Communicator EXT software is designed to accommodate a variety of programmable rate structures The TOU function accumulates data based on the time scheme programmed into the Nexus meter See the Communicator EXT User Manual for details on programming the Nexus 1262 1272 meter s TOU calendar and retrieving TOU data 7 2 The Nexus Meter s
58. 51701 A TLC Spreadsheet and Examples Electro Industries GaugeTech 1800 Shames Drive Westbury NY 11590 877 EIMETER 877 346 3837 Transformer Losses EIG Loss Compensation Calculator Information Only Required Data Calculated Value Data from other Sheet Entes this Data Comments y Ti nk Lir V Secondary Side of Xmfr Vs Rated Transformer Current Rated 2291 e or Delta Connection W i ent Me rw Instrument Transformers _ Publishing and duplicating rights are property of Electro industries GaugeTech This spreadsheet is designed only to be used with EIG Nexus based metering equipment Electro Industries GaugeTech The Leader In Power Monitoring and Smart Grid Solutions Doc E151701 A TLC Spreadsheet and Examples Electro Industries GaugeTech 1800 Shames Drive Westbury NY 11590 877 EIMETER 877 346 3837 Line Losses EIG Loss Compensation Calculator Three Element Meter with 3 PT s and 3 CT s Note Leave Data Entry Cells Blank if not including Line Losses Company JExampie 2 EEI Handbook baton Nama Sin Tri Bank Nof 0 Length Unit li Mile Inductive Losses Capacitive Reactance 000C Charging Currentperline Amps 00000 Capacitive Losses war Nominal Pri kVA Rating VA mom pri Nominal Sec kVA Rating _ VA mom sec lt Transformer KVA Rating o kas f x 00 E 0 Rated Primary L L Volts Vp 115 000 00 Vo
59. 6 Hardware Installation e Make sure the meter is functioning properly by running it through a test circuit e The Nexus Socket meter has its own display built into the face of the meter However you may want to install additional displays in remote locations See Section 6 3 for installation procedures for the Nexus P40N P40N P41N P43N displays The displays are connected to the meter via the RS485 cable supplied with the 1262 1272 see Figure 6 2 below See Chapter 5 for detailed wiring instructions Modem Ethernet Combo Cable 4 RS485 Cable 5 RJ 11 Modem Cable 6 R 45 Ethernet Modem Cable 4 RS485 Cable 5 RJ 11 Modem Cable 7 Battery Ethernet Cable 6 R 45 Ethernet Cable 8 Optional Aux Power Cable 1 Po Port 4 IRIG B any _Optional Communication Cables Cable 3 Optional Cable 2 to High Speed KYZ Cable Inputs Figure 6 2 Socket Meter Rear View Showing Cables Electro Industries GaugeTech Doc E151701 6 3 The Leader In Power Monitoring and Smart Grid Solutions 6 Hardware Installation n 0 87 2 21cm 10 4 26 42cm ion al y 6 84 17 37cm Figure 6 3 Socket Meter Mounted in A Base Front View Electro Industries GaugeTech Doc E151701 The Leader In Power Monitoring and Smart Grid Solutions 6 Hardware Installation 4 57 11 61cm
60. 7 Battery Label Attached Black Cable 8 Aux Power DE Positive Red Neutral Negative Black Aux Power SE Std Ext Black Std Ext Black Table 6 1 Cable Color Key IMPORTANT NOTE The Cable colors shown here are subject to change with out notice Refer to the CABLE LABELS for color code verification 6 2 Internal Battery Installation and Maintenance CAUTI ON BATTERY INSTALLATION OR REPLACEMENT MUST BE DONE WITH POWER OFF ATTENTION L INSTALLATION OU LE REMPLACEMENT DE LA PILE DOIT TRE FAIT SANS ALIMENTATION Depending on its age the Nexus 1262 1272 meter could be equipped with either of two types of batteries e Older meters are equipped with 3V Lithium cell BR2032 e Meters shipped after February 2010 are equipped with 3V Lithium cell Panasonic BR3032 4 Electro Industries GaugeTech Doc E151701 6 7 l The Leader In Power Monitoring and Smart Grid Solutions 6 Hardware Installation Examine the specific meter and be sure to install the correct battery Figure 6 5 Meter without Internal Shroud The Internal battery maintains NVRAM and time during outages It is located on one of the vertical panels inside the Internal Shroud see Figure 6 5 Under normal conditions the battery should provide in excess of 10 years of service during storage conditions disconnected from terminals or when properly installed in an energized met
61. 9U Bottom Communication Interfaces A7Z Instructions One end of the magnetic interface simply snaps onto the optical port the magnet keeps it in place The other end is an RS232 connection Insert that end into a 9 pin serial port on a computer or other device The A7Z requires no power supply All power is received from the host computer serial port using transmitter and receiver 3 Electro Industries GaugeTech The Leader In Power Monitoring and Smart Grid Solutions Doc 151701 5 3 5 Serial Communication Wiring circuits within the probe The RS232 standard limits the cable length to 50 feet 15 2m A9U Instructions You need to download and install the driver for the A9U from EIG s website www electroind com A7Z_A9U html Once the driver is installed attach the A9U s magnetic interface onto the meter s Optical port and attach the A9U s USB connection into your PC Electro Industries GaugeTech Doc E151701 The Leader In Power Monitoring and Smart Grid Solutions 5 Serial Communication Wiring 5 3 RS485 Serial Communication RS485 communication allows multiple devices to communicate on a bus The meter s Port 1 and Port 4 are RS485 terminals viable for a distance of up to 4000 feet 1219 meters 5 3 1 RS485 Wiring Fundamentals Port 1 and Port 4 Below is a detailed view of a 2 wire RS485 connection From other RS485 device Connect Nexus Eto O 1262 1272 e to
62. ANY matt nn Mode Magnetic Reed Switch Activate Mode gq Switch by swiping a magnet on meter side Test Button under the cover Optical Reset Port Switch Figure 3 3 Meter Showing Switches and Indicators Switches and Indicators e There are two switches accessible from outside the meter cover 1 The Mode Switch also called a Magnetic Reed Switch is used to switch from Normal Mode to Circuit Diagnostic Mode or Time of Use Mode 2 The Reset Switch is used to reset Demand e A third switch the Test Button is accessible only when the cover has been removed The Test Button switches the meter from one of the operational modes to Test Mode and back to Normal Mode The Test Button is also used to access Display Adjustments Mode during Power up Mode Electro Industries GaugeTech Doc E151701 3 4 The Leader In Power Monitoring and Smart Grid Solutions 3 Operating Instructions Optical Port The Optical port is located on the lower left side of the meter face With the Optical port you can program the meter with Communicator EXT software using an A7Z or A9U Communication Interface or other ANSI C12 13 Type II magnetic optical communications coupler and an RS232 cable A7Z or a USB cable A9U to a PC Test Pulse An infrared Test pulse is located on the upper left side of the face Energy pulsing applications can be configured using Communicator EXT software Phase Indicator A Phase
63. ASCII protocol See the Communicator EXT User Manual for instructions Remember Modbus RTU will not function properly with modem communication You must change the protocol to Modbus ASCII You must use an RS485 to RS232 converter and a Null Modem EIG recommends using its Modem Manager This converter has a built in null modem and also provides line data buffering making the telephone line communication reliable most commer Electro Industries GaugeTech Doc E151701 5 16 The Leader In Power Monitoring and Smart Grid Solutions 5 Serial Communication Wiring cial modems do not For this reason EIG recommends the Modem Manager to alleviate any communication line errors that might occur Using the Modem Manager also eliminates the need to program default settings into the modem which makes installation simpler 5 3 11 Programming Modems for Remote Communication You must program a modem before it can communicate properly with most RS485 or RS232 based devices This task is often quite complicated because modems can be unpredictable when communicating with remote devices If you are not using EIG s Modem Manager you must set the following strings to communicate with the remote Nexus meter s Consult your modem s manual for the proper string settings or see Section 5 3 12 for a list of selected modem strings NOTE Use a Modem Manager The product was designed to make this task plug and play We highly
64. B follow these instructions 1 Use the Nexus Series Product CD shipped with your meter to install the Communicator EXT software and the driver for the P40N USB port a Insert the CD into your PC s CD drive The screen shown below opens in your Browser ENTIRE FIG PRODUCT LINE EIG WEBSITE E 6 o 3 2 y 2 Nexus Series Electro Industries GaugeTech The Leader In Power Monitoring and Smart Grid Solutions Electro Industries GaugeTech 1800 Shames Drive Westbury 11590 1 877 EIMETER 1 877 346 3837 Phone 616 334 0870 Fax 616 338 4741 www electroind com Requires Adobe Acrobat B b Click the Nexus Technical Documents button The following screen opens in your Browser Electro Industries GaugeTech The Leader In Power Monitoring and Smart Grid Solutions Doc E151701 9 Using the External Displays NEXUS 1250 1250 INSTALLATION AND NEXUS 1262 1272 5 SOCKET METER SWITCHBOARD F OPERATION MANUAL QUICKSTART QUICKSTART NEXUS 1500 INSTALLATION AND SOFTWARE cms mens Nexus Series Electro Industries GaugeTech The Leader in Power Monitoring and Smart Grid Solutions Electro Industries GaugeTech 1800 Shames Drive Westbury 11590 1 877 EIMETER 1 877 346 3837 Phone 516 334 0870 Fax 516 338 4741 www electroind com Requires Adobe Acrobat amp www electroind com c To install Communicator EXT 3 0 software and the driver for the P40N i Click
65. D Figure 12 15 9Z Transformer Rated 3 Wire Delta no PTs 2 CTs e The protective ground connections for the transformers are omitted in the diagrams and are not required for the meter to work properly However we strongly recommend those connections to reduce shock hazard e Shorting switches blocks for the current transformers secondary side are also not shown To prevent electrical shock we recommended you use such shorting switches blocks Make sure the CTs second ary are shorted before disconnecting them from the meter s current input terminals 4 Electro Industries GaugeTech Doc E151701 12 16 The Leader In Power Monitoring and Smart Grid Solutions 12 Switchboard Meter SERVICE DELTA 3WIRE 2 PTs 2 CTs VAR APR raz eae S 1 CH1 CH2 CH3 CH4 Gateway IA SOM SOW 5765422 7 IG B _COM1 COM4 HIGH SPEED ower In Electro Industries 2 1 i GaugeTech o www electroind com Caution Power Supply Input on new units is configured differently Please check wiring carefully v1 e v2 e o e V3 e LOAD Figure 12 16 9Z Transformer Rated 3 Wire Delta 2 PTs 2 CTs e The protective ground connections for the transformers are omitted in the diagrams and are not required for the meter to work properly However we strongly recommend those connections to reduce shock hazard e Shorting switches blocks for the current transformers secondary side are also not
66. Device to send the new settings to the meter NOTE The unit for the calibration pulses is Watt hours The initial value of each pulse Kt is 1 800 secondary Watt hours per pulse 4 1 2 LCD Display In Test Mode the LCD display provides user access to accumulated real reactive and apparent energy as well as Block Demand for real power There are eight screens in Test Mode Wh Del Wh Rec VARh Q1 amp Q2 VARh Q3 amp Q4 VAh Q1 amp Q4 VAh Q2 amp Q3 Watt Demand Test Rolling and Watt Demand Test Block See Section 4 2 2 for more detail The LCD display also includes three phase Voltage indicators These indicators are labeled A B and C to represent the presence of Voltage on the labeled phase If Voltage is not present on one phase its indicator is not displayed These indicators also show whether current is flowing on the phase If no current is flowing on a phase the indicator blinks when current is flowing the indicator shows a continuously illuminated digit The indicator also shows phase sequence 4 2 Test Mode Test Mode allows the meter to be tested without disturbing billing data or setting a new maximum Demand Test Mode performs the same function as setting the point ers back on an electromechanical meter after testing While operating in Test Mode the meter uses the same measurement and calculation processes that are used in Normal Mode The only difference is that the billing numbers stored
67. Display Programmable Set tings screen Miscellaneous tab see Section 3 6 If the Meter recognizes measurable load The meter watches the Test and Reset Buttons for activity using an extended time limit consisting of the Exit Delay time plus the programmed Block Interval Time This insures that the meter completes a full block Demand test without interruption After exiting Test Mode All Test Mode data is lost when you exit Test Mode Upon exiting Test Mode a new possibly partial Demand interval and subinterval begin The past subinterval as well Cj Electro Industries GaugeTech Doc E151701 4 8 l The Leader In Power Monitoring and Smart Grid Solutions 4 Performing Meter Testing as the current subinterval are zeroed Upon returning to Normal operating mode a TOU meter or Demand meter with load profiling completes the time remaining in the current partial subinterval so that subsequent subintervals are synchronized with the hourly boundary Maximum Demand values for each Demand integration type are not modified while in Test Mode The previously recorded maximums are restored when you exit Test Mode If you choose to reset Demand data during testing operations you can complete this action when you exit Test Mode by pressing the Reset Button after the meter returns to Normal Mode NOTE Normal billing and historical log data accumulation is suspended during Test Mode operation Upon exiting Test Mode accumulation
68. Doc E151701 11 7 The Leader In Power Monitoring and Smart Grid Solutions 11 Electrical Installation FORM 9S TRANSFORMER RATED 3 SERVICE WYE 4WIRE De NO PTs 3 CTs LINE 1 V3 V2 V1 N LOAD Figure 11 3 Form 9S Wye no PTs 3 CTs e The protective ground connections for the transformers are omitted in the diagrams and are not required for the meter to work properly However we strongly recommend those connections to reduce shock hazard e Shorting switches blocks for the current transformers secondary side are also not shown To prevent electrical shock we recommended you use such shorting switches blocks Make sure the CTs second ary are shorted before disconnecting them from the meter s current input terminals Ci Electro Industries GaugeTech Doc E151701 11 8 The Leader In Power Monitoring and Smart Grid Solutions 11 Electrical Installation FORM 9S TRANSFORMER RATED SERVICE WYE 4WIRE 3 3 PTs 3 CTs LINE 1 V3 V2 V1 N LOAD Figure 11 4 Form 9S Wye 3 PTs 3 CTs e The protective ground connections for the transformers are omitted in the diagrams and are not required for the meter to work properly However we strongly recommend those connections to reduce shock hazard e Shorting switches blocks for the current transformers secondary side are also not shown To prevent electrical sho
69. ESSED OR IMPLIED INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABIL ITY OR FITNESS FOR A PARTICULAR PURPOSE ELECTRO INDUSTRIES GAUGETECH SHALL NOT BE LIABLE FOR ANY INDIRECT SPECIAL OR CONSEQUENTIAL DAMAGES ARISING FROM ANY AUTHORIZED OR UNAUTHORIZED USE OF ANY ELECTRO INDUSTRIES GAUGETECH PRODUCT LIABILITY SHALL BE LIMITED TO THE ORIGINAL COST OF THE PRODUCT SOLD 4 Electro Industries GaugeTech Doc E151701 ii The Leader In Power Monitoring and Smart Grid Solutions Use of Product for Protection Our products are not to be used for primary over current protection Any protection feature in our products is to be used for alarm or secondary protection only Statement of Calibration Our instruments are inspected and tested in accordance with specifications published by Electro Industries GaugeTech The accuracy and a calibration of our instruments are traceable to the National Institute of Standards and Technology through equipment that is calibrated at planned intervals by comparison to certified stan dards For optimal performance EIG recommends that any meter including those manufactured by EIG be verified for accuracy on a yearly interval using NIST trace able accuracy standards Disclaimer The information presented in this publication has been carefully checked for reliability however no responsibility is assumed for inaccuracies The information contained in this document is subject to change without notice Safe
70. Grid Solutions Doc 151701 1 18 2 Meter Overview 2 Meter Overview 2 1 The Nexus 1262 1272 Multi parameter Revenue Meter The Nexus 1262 1272 transformer rated polyphase revenue meter is a unique collection of metering technologies designed to fulfill advanced metering require ments It provides high accuracy power and energy measurements of Voltage current and all power values data logging and power quality recording The unit makes the data available through the display connected systems and historic logs 2 2 Accu Measure Technology Theory of Operation The advanced metering capability of the Nexus 1262 1272 device is a result of EIG s Accu Measure Digital Sensing Technology Accu Measure technology is a combination of high speed sampling high resolution measurement and high speed calculation All Voltage and current waveforms are sampled and RMS values calcu lated continuously every cycle Values of Voltage current and power are produced every three cycles and every second Figure 2 1 illustrates the key processes operating within the Nexus 1262 1272 meter The meter allows for four types of inputs and can provide outputs to an integrated display pulse outputs and several communication ports Nexus 1262 1272 Meter Processing Voltage and current signals enter the meter and are sampled at up to 256 samples per cycle Each sample is resolved to a digital value using 16 bit analog to digital conv
71. However the calculation of the correction factors that must be programmed into the meter differ for the two dif ferent applications For this reason the two methodologies will be treated separately in this chapter In the Nexus meter Loss Compensation is a technique that computationally accounts for active and reactive power losses The meter calculations are based on the formulas below These equations describe the amount of active Watts and reac tive VARs power lost due to both iron and copper effects reflected to the secondary of the instrument transformers Total Secondary Watt Loss Measured Voltage Cal point Voltage 2 x LWFE Measured Current Cal Point Current 2 x LWCU x Full scale Secondary VA Cj Electro Industries GaugeTech Doc E151701 8 3 The Leader In Power Monitoring and Smart Grid Solutions 8 Transformer Loss Compensation Total Secondary VAR Loss Measured Voltage Cal point Voltage 4 x LVFE Measured Current Cal Point Current 2 x LVCU x Full scale Secondary VA The Values for LWFE LWCU LVFE and LVCU are derived from the trans former and meter information as demonstrated in the following sections The calculated loss compensation values are added to or subtracted from the mea sured Watts and VARs The selection of adding or subtracting losses is made through the meter s profile when programming the meter see the following section for instructions The meter uses the
72. In Power Monitoring and Smart Grid Solutions Doc E151701 2 4 2 Meter Overview e Individual accumulating registers e 4 totalizing registers e Totalization with Nexus meter kWh readings Multiple Demand Windows The Nexus 1262 1272 meter simultaneously monitors four demand structures The unit offers e Block Window Demand e Rolling Window Demand e Thermal Demand e Predictive Demand e Interval length from 1 second to over one hour e Up to 15 sub intervals e End of Interval Pulse Output with optional 4IPO Internal KYZ capability e End of Interval Pulse Input Time Stamped Max Min Demands The unit gathers Time stamped Max Min Demands for all power values Each of the following values is date time stamped e kW Demand Delivered amp Received Max Min e kVAR Demand Delivered amp Received Max Min e kVAR Coincident with kW Demand e kVA Demand Max Min e Amps Demand Max Min e Voltage Demand Max Min 3 Electro Industries GaugeTech The Leader In Power Monitoring and Smart Grid Solutions Doc E151701 2 5 2 Meter Overview Transformer Loss Compensation Transformer Loss Compensation adjusts for both copper and iron losses with a simple user setup 2 3 2 Communications and I O Capabilities The Nexus 1262 1272 meter features advanced communication which utilizes multiple Com ports using open protocols The meter s multi port design allows multi ple communication connections simultaneou
73. LTA 4WIRE 2 PTs 2 CTs LINE N v3 v2 v1 2 1 LOAD Figure 11 8 Form 9S 4 Wire Delta 2 PTs 2 CTs e The protective ground connections for the transformers are omitted in the diagrams and are not required for the meter to work properly However we strongly recommend those connections to reduce shock hazard e Shorting switches blocks for the current transformers secondary side are also not shown To prevent electrical shock we recommended you use such shorting switches blocks Make sure the CTs second ary are shorted before disconnecting them from the meter s current input terminals 4 Electro Industries GaugeTech The Leader In Power Monitoring and Smart Grid Solutions Doc E151701 11 13 11 Electrical Installation FORM 9S TRANSFORMER RATED 3 SERVICE DELTA 3WIRE NO PTs 2 CTs LINE LOAD Figure 11 9 Form 9S 3 Wire Delta no PTs 2 CTs e The protective ground connections for the transformers are omitted in the diagrams and are not required for the meter to work properly However we strongly recommend those connections to reduce shock hazard e Shorting switches blocks for the current transformers secondary side are also not shown To prevent electrical shock we recommended you use such shorting switches blocks Make sure the CTs second ary are shorted before disconnecting them from the meter s current input terminals Ci Electro Indust
74. Loss Compensation Loss Compensation is applied to 1 second per phase Watt VAR readings and because of that affects all subsequent readings based on 1 second per phase Watt VAR read ings This method results in loss compensation being applied to the following quanti ties e Total Power e Demands per phase and total Thermal Block Fixed Window Rolling Sliding Window and Predictive Window e Maximum and minimum Demands e Energy accumulations e KYZ output of Energy accumulations NOTE Loss Compensation is disabled when the meter is placed in Test Mode 8 2 Nexus 1262 1272 Meter s Transformer Loss Compensation The Nexus meter provides compensation for active and reactive power quantities by performing numerical calculations The factors used in these calculations are derived either e By clicking the TLC Calculator button on the Transformer Loss screen of the Device Profile to open the EIG Loss Compensation Calculator in Microsoft Excel e By figuring the values from the worksheet shown here and in Appendix B of the Communicator EXT User Manual Either way you enter the derived values into the Communicator EXT software through the Device Profile Transformer and Line Loss Compensation screen The Communicator EXT software allows you to enable transformer loss compensation for losses due to copper and iron individually or simultaneously Losses can either be added to or subtracted from measured readings Refer to
75. NT OU L INSTALLATION L INTERRUPTEUR DOIT ETRE DANS UNE PROXIMITE PROCHE DE L EQUIPEMENT ET A LA PORT E DE L OP RATEUR L INTERRUPTEUR DOIT AVOIR LA MENTION DEBRANCHEMENT DE L APPAREIL POUR L EQUIPEMENT Electro Industries GaugeTech Doc E151701 The Leader In Power Monitoring and Smart Grid Solutions 11 4 11 Electrical Installation 11 2 Blade Configuration for Forms 9S 36S and 45S Detailed drawings of the Blade configurations are shown below and on the next page There are two configurations because the 9S and the 36S are the same NOTE The forms referred to in this chapter comply with ANSI forms 9S 36S and 45S Figure 11 2 Form 45S Base with Knock Out Holes Doc E151701 11 5 3 Electro Industries GaugeTech l The Leader In Power Monitoring and Smart Grid Solutions 11 Electrical Installation 11 3 Wiring Diagrams Choose from the supported meter forms based on the rated Voltage and hookup required for your application Corresponding wiring diagrams appear on the following pages If the connection diagram you need is not listed contact EIG for a custom con nection diagram Form 9S mounted in an A S Adapter is shown in Figure 11 19 NOTE Form 45S replaces Form 5S and may also be used in 4 wire circuits Form Description Figure Wye no PTs 3 CTs 1153 Wye 3 PTs 3 CTs 11 4 4 Wire Delta no PTs 3 CTs 1
76. Nexus 1262 12 72 High Performance Utility Billing Meters UTILITY ITY COMPAN nog eran to M VTR E 1 CTR z pe fe L 4 O 2 ed Installation amp Operation Manual V 1 18 April 16 2014 q Electro Industries GaugeTech The Leader In Power Monitoring and Smart Grid Solutions 1800 Shames Drive Westbury NY 11590 Tel 516 334 0870 Fax 516 338 4741 Email sales electroind com This page intentionally left blank Nexus 1262 1272 Meter Installation and Operation Manual Version 1 18 Published by Electro Industries GaugeTech 1800 Shames Drive Westbury NY 11590 All rights reserved No part of this publication may be reproduced or transmitted in any form or by any means electronic or mechanical including photocopying record ing or information storage or retrieval systems or any future forms of duplication for any purpose other than the purchaser s use without the expressed written permission of Electro Industries GaugeTech 2014 Electro Industries GaugeTech Nexus and Shark are registered trademarks of Electro Industries GaugeTech Communicator EXT is a trademark of Electro Industries GaugeTech Modbus is a registered trademark of Schneider Electric licensed to the Modbus Organization Inc 3 Electro Industries GaugeTech Doc E151701 l The Leader In Power Monitoring and Smart Grid Solutions This page intentionally left blank
77. Operating Instructions e Date Format Month Day Year or Day Month Year b Optical Port settings e Baud Rate 1200 2400 4800 9600 19200 38400 or 57600 e Optical Receive Non Inverted or Inverted c User Inactivity Time Outs number of minutes since last user action when Mode reverts to View Mode 1 Settings are 5 to 60 minutes with 1 minute intervals e Leave Test Mode After _ Minutes e Leave View Mode 2 After _ Minutes e Leave View Mode 3 After _ Minutes When you have finished programming the Device Display Programmable Settings Screen 1 Use Buttons as described below e Update Display Click to send the new settings to the display After settings have been updated View Mode 1 is displayed e Retrieve from Display Click to retrieve existing settings e Cancel Click to return to the Communicator EXT Main screen without updating or saving new settings e Save Click to save new settings to a file 2 When you finish making any changes click Update Display to send the new settings to the display Pop up windows tell you that the changes have been made and then you return to the Communicator EXT Main screen 4 Electro Industries GaugeTech Doc E151701 3 27 The Leader In Power Monitoring and Smart Grid Solutions 3 Operating Instructions 3 6 Using the Base Programmable Display The Base Programmable Display pre November 2010 has the same three configu rable View modes as the Display Configur
78. P202 Serial 114 0074880532 Memory 2 Meg Class 20 Freq 60 Hz KYZ Out Yes Opt Comm Ethernet Modem Combo Power Supply Std Ext 102 275V AC DC Figure 3 2 Meter Options Label The Options Label is located on the outside of the internal shroud It is printed specifically for each meter and shows the ordered options that are included in the meter An example of a typical label is shown above Below is a list of options available for the meter Memory 1272 Memory 1262 S Standard 2M of RAM S Standard 512K of RAM A Advanced 4M of RAM A Advanced 2M of RAM Communication Options INP2 Dial Out Option INP200 Ethernet 10 100BaseT INP202 Ethernet Modem Combination 4 Electro Industries GaugeTech Doc E151701 ie The Leader In Power Monitoring and Smart Grid Solutions 3 Operating Instructions Case Style SWB2 Switchboard 45S 9S 36S Socket meter Forms 9A Socket meter in A Base Power Supply SE Std Ext 102 275V AC DC S Std Blade Powered DE DC Ext 18 60 VDC LV 69 VAC Blade Powered EIG Number Model Number plus Option Numbers Example below Model Memory Form Freq Power Supply I O Communication 1272 A 9S 60Hz S 4PO1 INP200 Electro Industries GaugeTech Doc E151701 The Leader In Power Monitoring and Smart Grid Solutions 3 Operating Instructions 3 2 Basic Operation dr 2 Nexus Cc BC UTILITY PA LL 1P 7 MP
79. TA 3WIRE NO PTs 2CTs A LINE V3 V2 V1 2 4 LOAD Figure 11 15 Form 45S 3 Wire Delta no PTs 2 CTs The protective ground connections for the transformers are omitted in the diagrams and are not required for the meter to work properly However we strongly recommend those connections to reduce shock hazard Shorting switches blocks for the current transformers secondary side are also not shown To prevent electrical shock we recommended you use such shorting switches blocks Make sure the CTs second ary are shorted before disconnecting them from the meter s current input terminals 3 Electro Industries GaugeTech Doc E151701 11 20 l The Leader In Power Monitoring and Smart Grid Solutions 11 Electrical Installation FORM 45S TRANSFORMER RATED SERVICE DELTA 3WIRE 3 2 PTs 2 CTs LINE V3 V2 V1 2 4 LOAD Figure 11 16 Form 45S 3 Wire Delta 2 PTs 2 CTs e The protective ground connections for the transformers are omitted in the diagrams and are not required for the meter to work properly However we strongly recommend those connections to reduce shock hazard Shorting switches blocks for the current transformers secondary side are also not shown To prevent electrical shock we recommended you use such shorting switches blocks Make sure the CTs second ary are shorted before disconnecting them from the
80. TOU Calendar A Nexus meter s TOU calendar sets the parameters for TOU data accumulation You may store up to twenty calendars in the Nexus Meter and an unlimited amount of calendar files on your computer The TOU calendar profile allows you to assign a programmable usage schedule eg Weekday Weekend Holiday to each day of the calendar year You may create up to 16 different TOU schedules Each TOU schedule divides the 24 hour day into fifteen minute intervals from 00 00 00 to 23 59 59 You may apply one of eight different programmable regis ters eg Peak Off Peak Shoulder Peak to each fifteen minute interval The Nexus meter stores e Accumulations on a seasonal basis up to four seasons per year e Accumulations on a monthly basis Seasonal and monthly accumulations may span one year into the next Each season and month is defined by a programmable start billing date which is also the end date of the prior season or month A season ends at midnight of the day before the start of the next season A month ends at midnight of the month s billing day 4 Electro Industries GaugeTech Doc E151701 7 1 The Leader In Power Monitoring and Smart Grid Solutions 7 Time of Use Function If the year ends and there is no new calendar TOU accumulations will stop If a calendar is present for the following year TOU accumulations continue until the next monthly bill date or n
81. These settings apply to VA hours Watt hours VAR hours and VAR hours each quadrant in the meter Electro Industries GaugeTech Doc 151701 The Leader In Power Monitoring and Smart Grid Solutions 3 Operating Instructions e The Number of Digits setting controls the display and storage of all digits displayed on the screen and it sets the Register Rollover for all Energy type registers Miscellaneous Tab 1 Click the Miscellaneous tab You will see the screen shown below Device Display Programmable Settings Screen Phasor Diagram Rotation Clockwise Demand Shown Time of Use Demand Block Rolling Date Format Update Displey ETE 2 Enter settings in the Miscellaneous screen a Screen Settings Back Lig t Level 4 Brightest gt Optical Port Baud Rate Optical Receive Mode User Inactivity Time Outs Leave Test Mode Alter js minutes Leave View Mode 2 After js minutes Leave View Mode 3 Alter js minutes e Back Light Level O Off to 4 Brightest e Back Light Time Back Light shuts off OOmin 30sec 60min OOsec e Contrast 0 Highest to 7 Lowest e Scroll Stop Enabled or Disabled e Phasor Rotation Clockwise or Counterclockwise e Demand Shown Cumulative or Continuous Cumulative e Time of Use Demand Block Rolling or Cumulative Electro Industries GaugeTech Doc E151701 5226 The Leader In Power Monitoring and Smart Grid Solutions 3
82. W significantly more than the demand value Figure 1 8 shows another example of energy and demand In this case each bar represents the energy consumed in a 15 minute interval The energy use in each interval typically falls between 50 and 70 kWh However during two intervals the energy rises sharply and peaks at 100 kWh in interval number 7 This peak of usage will result in setting a high demand reading For each interval shown the demand value would be four times the indicated energy reading So interval 1 would have an associated demand of 240 kWh hr Interval 7 will have a demand value of 400 kWh hr In the data shown this is the peak demand value and would be the number that would set the demand charge on the utility bill 100 80 60 4 2 an ie mins kilowatt hours Figure 1 8 Energy Use and Demand As can be seen from this example it is important to recognize the relationships between power energy and demand in order to control loads effectively or to monitor use correctly 5 Electro Industries GaugeTech The Leader In Power Monitoring and Smart Grid Solutions Doc 151701 1 11 1 Three Phase Power Measurement 1 3 Reactive Energy and Power Factor The real power and energy measurements discussed in the previous section relate to the quantities that are most used in electrical systems But it is often not sufficient to only measure real power and energy Rea
83. You must use an external power source such as the EIG PSIO 12V Refer to Section 5 3 9 to determine power needed TX CT RX oO n 0 1mA Analog Input Power In Module COM E NC L INPUT 1 e 0 nPuT2 DANGER e e a Power Supply INPUT 4 Max Power 12 VA Input Voltage 12 60V DC m 90 240V Ac oc O Output Voltage 12V DC Electrolndustries GaugeTech www electroind com Figure 10 3 Power Flow from PSIO to I O Module The Leader In Power Monitoring and Smart Grid Solutions 4 Electro Industries GaugeTech Doc E151701 10 External 1 0 Modules On Er NC L DANGER Power Supply Max Power 12 VA Input Voltage 12 60V DC 90 240V AC DC Output Voltage 12V DC Electrolndustries GaugeTech www electroind com Electro Industries augetecfi lt POWER POWER 1 lt gt lt gt LE 10 3 Using the PSIO with Multiple O Modules Female RS485 side Port Li oli Joo 0000 1 O Port Size and pin configuration vary e 4 On Figure 10 4 PSIO Side and Top Labels Labels are Red and White Mounting bracket Communicaln ONLY A B and Shield Control NC L te DANGER Power Supply Max Power 12 VA Input Voltage 12 60V DC O 90 240V Ac Dc O Output Voltage 12V DC
84. a Vb Vc to VRef burden total 12V max including power supply 600V max Phase to Phase Va to Vb Vb to Vc Vc to Va e Blade powered unit low Voltage Option LV 69V max Phase to Reference Va Vb Vc to VRef burden total 12V max including power supply 120V between Va Vb Vc inputs e Externally powered units Options SE DE 480V max Phase to Reference Va Vb Vc to VRef burden 0 33VA 576V 600V max between Va Vb Vc inputs e Input Impedance 1Mohm phase e 20 over range of rated Voltage e 2V pickup Voltage External Power Supply Options e Standard external Option SE 102 to 270 Vac 50 60Hz 12VAmax e Low Voltage external Option DE 18 to 60 Vdc Burden 9W max e Separate power cord Switchboard meter is always separately powered option SE or DE Isolation e All inputs and outputs isolated to 2500 Volts e Com Ports isolated from each other to 1000 Volts Sensing e Accu Measure Technology e 16 bit A D Inputs e True RMS 3 Electro Industries GaugeTech The Leader In Power Monitoring and Smart Grid Solutions Doc E151701 2 11 2 Meter Overview e 8 Channel Sample and Hold Memory e All meter setup parameters measurements and logs contained in nonvolatile RAM Standard Communications e LCD display e ANSI Type 2 Optical port e Two RS485 serial ports Modbus RTU Modbus ASCII and DNP 3 0 protocols e Data Speeds of up to 115200 bps e Eight High Speed Input channels Optio
85. a light emitting diode LED for calibration and a liquid crystal display with test screens These two standard features provide user interface and equipment interface points for meter testing PANY TILITY COM ull une Infrared Test Pulse Test Button Under Cover Figure 4 1 Meter Test Pulse and Test Button Location 4 1 1 Test Pulse LED The Test Pulse LED is located in the upper left hand portion of the meter face as shown in Figure 4 1 The Test Pulse LED continuously emits calibration pulses infra red light This LED can be used for a variety of pulses including individual quadrants for Watt hour VA hour VAR hour and Watt Demand pulses Each calibration pulse is equal to the value assigned to Kt Watt hours per pulse in the meter s Device Profile The millisecond duration of each output pulse is also programmable in the meter s Device Profile To program the Test Pulse LED 1 From the Device Profile menu in Communicator EXT click Revenue and Energy Settings gt I nternal KYZ to configure the following settings Electro Industries GaugeTech Doc E151701 4 2 The Leader In Power Monitoring and Smart Grid Solutions 4 Performing Meter Testing a Assigned Channel choose from settings b Watt hour per Pulse enter the value in the secondary c Pulse Width set from 5ms to 635ms d Mode select to enable or disable e Form select between Form A and Form C 2 Click OK and then click Update
86. a system operating at 60Hz Flicker will still operate but the computed values will not be valid Therefore you should select the frequency setting with care User settings are stored If Flicker is on and power is removed from the meter Flicker will still be on when power returns This can cause gaps in the logged data The Max and Min values are stored and are not lost if the unit is powered down Flicker meets the requirements of IEC 61000 4 15 and former IEC 868 Refer to those specifications for more details if needed Meters with the Flicker option also meet the IEC61000 4 30 conformance standards for Flicker Refer to chapters 16 and 17 in the Communicator EXT User Manual for additional information Operation is at 230V for 50Hz and 120V for 60Hz as per specification If the input Voltage is different the system will normalize it to 230V or 120V for computational purposes Electro Industries GaugeTech Doc E151701 The Leader In Power Monitoring and Smart Grid Solutions 14 10 A TLC Spreadsheet and Examples A Transformer Line Loss Compensation Spread sheet and Examples A 1 Calculating Values Transformer Loss Compensation is discussed in Chapter 8 Values for three element installations can be calculated in two ways Through an Excel Spreadsheet 1 Click the TLC Calculator button on the Transformer Loss screen of the meter s Device Profile The TLC Calculator button activates an Excel Spread
87. ab to access a screen containing three groups of Pit readings shown below EN50160 IEC 61000 4 30 Flicker Time Short Term iLong Term Start Reset 7 Max Volts A Max Volts B Max Volts C 1 Min Volts A 0 240 1 Min Volts B Min Volts C Base Voltage Flicker Monitoring Polling Time Plt Readings Displayed e Current PIt values for Va Vb and Vc and the time of computation e Current Plt Max values for Va Vb and Vc since the last reset and the time of the last reset e Current Plt Min values for Va Vb and Vc since the last reset and the time of the last reset 2 Click OK to exit the EN50160 IEC61000 4 30 Flicker Polling screen click Print to print all of the Readings views The Leader In Power Monitoring and Smart Grid Solutions Gi Electro Industries GaugeTech Doc E151701 14 8 14 EN50160 IEC61000 4 15 Flicker 14 5 Logging The Nexus 1262 1272 meter is capable of logging Flicker values in an independent log When Flicker is on entries are made into the log in accordance with the times that associated values occur Pst Pst Max Pst Min PIt PIt Max PIt Min Start Reset and Stop times are all recorded All values can be downloaded to the Log Viewer where they are available for graphing or export to another program such as Excel All Flicker values are pre defined and cannot be changed Refer to Chapter 8 of the Communicator EXT User Manual for additional instructions
88. al Input Accumulators Secondary Energy Quadrants Primary Energy Secondary Energy Uncompensated Energy Q Hours Accumulator Primary Current Yalue New Value Watt Hour Quadrant 1 4 0000215218632156 0000215218632156 Watt Hour Quadrant2 3 0000000000000098 0000000000000098 VAR Hour Quadrants 1 2 0000008071015026 0000008071015026 VAR Hour Quadrants 3 4 0000000000000373 0000000000000373 VA Hour Quadrants 1 2 3 4 fonc 5371401328 000021 5371401328 Accumulator Secondary Watt Hour Quadrant1 4 0000000004483721 0000000004483721 Watt Hour Quadrant2 3 0000000000000000 0000000000000000 VAR Hour Quadrants 1 2 0000000000168146 0000000000168146 VAR Hour Quadrants 3 4 0000000000000000 0000000000000000 VA Hour Quadrants 1 2 3 4 poo0000004486904 0000000004486904 Test Mode Preset Test Mode Preset Primary Energy KYZ Output Accumulators 18 V Squared T Accumulators Cumulative Demand Secondary Internal Input Accumulators Secondary Energy Quadrants Primary Energy Quadrants KYZ Output Accumulators Primary Energy Secondary Energy Internal Input Accumulators Secondary Energy Quadrants Uncompensated Energy Q Hours Primary Energy Secondary Energy 18 V Squared T Accumulators Cumulative Demand Secondary Uncompensated Energy Q Hours Accumulator Current Value New Value Preaee Accumulator Primary Current Value New Value Preset Watt Quadrant1 4 000014992 000014332 r Q Hour a 14599028614
89. al coil being connected between that wire and some common point If this common point is on one of the N wires the measurement may be made by the use of N 1 Wattmeters The theorem may be stated more simply in modern language In a system of N conductors N 1 meter elements will measure the power or energy taken provided that all the potential coils have a common tie to the conductor in which there is no current coil Three phase power measurement is accomplished by measuring the three individual phases and adding them together to obtain the total three phase value In older ana log meters this measurement was accomplished using up to three separate elements Each element combined the single phase voltage and current to produce a torque on the meter disk All three elements were arranged around the disk so that the disk was subjected to the combined torque of the three elements As a result the disk would turn at a higher speed and register power supplied by each of the three wires According to Blondell s Theorem it was possible to reduce the number of elements under certain conditions For example a three phase three wire delta system could be correctly measured with two elements two potential coils and two current coils if the potential coils were connected between the three phases with one phase in common In a three phase four wire wye system it is necessary to use three elements Three voltage coils are connected between t
90. alified industrial electricians and metering specialists ONLY All work must be done in accordance with local utility safety practices and or the procedures outlined in the current edition of the Handbook for Electricity Metering The handbook is available from the Edison Electric Institute 701 Pennsylvania Avenue N W Wash ington D C 20004 2696 Les informations contenues dans ce chapitre sont destin es a assister au personnel de relev qualifi Il n est pas destin remplacer la formation approfondie n cessaire pour installer ou retirer les compteurs de leur fonction Toute intervention sur o proximit de compteurs sous tension socles de compteur ou autres quipements de mesure pr sente un risque de choc lectrique de blessures ou la mort Toute inter vention avec ces produits doit tre effectu e UNI QUEMENT par des lectriciens industriels qualifi s et des sp cialistes de relev Toute intervention doit tre faite en conformit avec les pratiques de s curit des services publics locaux et ou les proc dures d crites dans la pr sente dition du Manuel de relev d lectricit Le manuel est disponible partir de la Edison Electric Institute 701 Pennsylvania Avenue NW Washington DC 20004 2696 Electro Industries GaugeTech Doc E151701 The Leader In Power Monitoring and Smart Grid Solutions 4 Performing Meter Testing 4 1 Testing Tools The Nexus 1262 and 1272 meters are equipped with
91. alog output 0 1mA 20mAON4 4 channel analog output 4 20mA 20mAONB 8 channel analog output 4 20mA Accuracy 0 1 of Full Scale Scaling Programmable Communication RS485 Modbus RTU Programmable Baud Rates 4800 9600 19200 38400 57600 Power Requirement 12 20VDC 50 200mA Operating Temperature 20 to 70 C 4 to 158 F Maximum Load Impedance O 1imA 10k Ohms 4 20mA 500 Ohms Factory Settings Modbus Address 1mMAON4 128 imAON8 128 20mAON4 132 2ZOMAONB 132 Baud Rate 57600 Transmit Delay Time 0 Default Settings Reset Button Modbus Address 247 Baud Rate 57600 Transmit Delay Time 20msec 10 5 1 Overview The Analog Transducer Signal Output Modules 0 1mA or 4 20mA are available in either a 4 or 8 channel configuration Maximum registers per request read or write is 17 registers All outputs share a single common point This is also an isolated connection from ground The Modbus Map for the Analog Output Module and operating details can be found in the Modbus Communicating 1 0 Modules Manual 3 Electro Industries GaugeTech l The Leader In Power Monitoring and Smart Grid Solutions Doc E151701 10 7 10 External 1 0 Modules 10 5 2 Normal Mode Normal Mode is the same for the 0 1mA and the 4 20mA Analog Output Modules except for the number of processes performed by the modules
92. at the top of each column Enter up to 16 screens for each View mode in the following way a Double click on one of the 48 set tings on the screen You will see the screen shown on the right b Select Group and Item from the pull down menus and click OK to return to the Screen Assignments screen NOTE If you select Time of Use as the Group the screen changes to allow an Item selection and addi tional selections for TOU Period and TOU Register See the screen on the right LCD Screen Selection Mode 2 2 Screen 14 Group tem Harmonics THD Ml LCD Screen Selection Mode 2 2 Screen 14 Group Item Time of Use D kWh Delivered M TOU Period TOU Register CORRE CCE Electro Industries GaugeTech Doc FE151701 The Leader In Power Monitoring and Smart Grid Solutions 3 Operating Instructions 3 6 1 Pre Defined Display Screens The Nexus pre defined display screens have features that make them very user friendly e Many of the screens have large digits 56 e There are many screens to choose from e The Polling Indicator in the right corner of the Status Line provides two functions 1 A blinking indicator shows that the display is receiving data from the meter 2 Power Flow is displayed by different shaped icons a When no power is flowing a solid block is displayed b An animated arrow pointing RIGHT indicates positive power flow c An animated arrow
93. ata per command Digital Solid State Pulse Output KYZ Modules are user programmed to reflect VAR hours WATT hours or VA hours See the Modbus Communicating I O Modules User Manual for details on pro gramming the module The Modbus Map for the KYZ Pulse Output Module and operating details can be found in the Modbus Communicating 1 0 Modules Manual NC Normally Closed NO Normally Open C Common 3 Electro Industries GaugeTech l The Leader In Power Monitoring and Smart Grid Solutions Doc E151701 10 13 10 External 1 0 Modules 10 8 2 Communication Maximum registers per request read or write is 4 registers The device will operate with the following Default Mode Parameters See Section 10 4 for details Address 247 F7H Baud Rate 57600 Baud Transmit Delay Time 20 msec 10 8 3 Normal Mode Energy readings are given to the device frequently The device generates a pulse at each channel after a certain energy increase Normal Operation consists of three processes 1 The first process accepts writes to registers 04097 04112 Writes can be up to four registers long and should end on the fourth register of a group register 04100 or registers 04103 04112 or registers 04109 04112 These writes can be interpreted as two byte four byte six byte or eight byte energy readings The reception of the first value for a given channel provides the initial value for that channel Subsequent wr
94. ated over a user set time interval that is derived from a specified number of sub intervals each of a specified time For 4 Electro Industries GaugeTech The Leader In Power Monitoring and Smart Grid Solutions Doc E154701 GL 8 Glossary example the average is calculated over a 15 minute interval by calculating the sum of the average of three consecutive 5 minute intervals This demand calculation methodology has been adopted by several utilities to prevent customer manipulation of kW demand by simply spreading peak demand across two intervals RS232 A type of serial network connection that connects two devices to enable communication between the devices An RS232 connection connects only two points Distance between devices is typically limited to fairly short runs Current standards recommend a maximum of 50 feet but some users have had success with runs up to 100 feet Communications speed is typically in the range of 1200 bits per second to 57 600 bits per second RS232 connection can be accomplished using Port 1 of the Nexus 1250 1252 meter RS485 A type of serial network connection that connects two or more devices to enable communication between the devices An RS485 connection allows multi drop communication from one to many points Distance between devices is typically limited to around 2 000 to 3 000 wire feet Communications speed is typically in the range of 120 bits per second to 115 000 bits per seco
95. ating 100 100 kVA No Load Loss VAR kVAR SQRT No Load Loss kVA 2 No Load Loss kW 2 SQRT 2 2 SQRT SQRT Full Load Loss Watts kW 1 Phase Kw Load Loss Full Load Loss VA kVA Impedance 1 Phase kVA Self Cooled Rating 100 100 kVA Full Load Loss VAR kVAR SQRT Full Load Loss kVA 2 Full Load Loss kW 2 SQRT 2 2 SQRT SQRT 4 Electro Industries GaugeTech Doc E151701 The Leader In Power Monitoring and Smart Grid Solutions 8 Transformer Loss Compensation Normalize Losses to Meter Base Quantity Value M T Factor M T Factor Exp M T Factor Value at Trf Value w Exp at Base Meter Base No Load V 2 Loss kW No Load V A4 Loss kVAR Load Loss 1 A2 kW Load Loss 1 A2 KVAR Enter Value at Transformer Base for each quantity from calculations above Enter Meter Trf Factor value from Base Conversion Factor calculations above Calculate M T Factor with Exponent by raising the M T Factor to the power indicated in the Exp or Exponent column Calculate the Value at Meter Base by multiplying the M T Factor w Exp times the Value at Trf Base Loss Watts Percentage Values Meter Base kVA 600 PT Multiplier CT Multiplier 1000 600 Z 1000 Electro Industries GaugeTech
96. ator and the three modes are displayed in auto sequence in the same way Using Communicator EXT you can assign up to 16 of the pre defined display screens to each mode any of the available screens can be used in any mode See Section 3 6 1 for a list of the pre defined screens You can also assign a three digit label and description to the View modes and configure the power and Energy display and screen time outs the same way as for the Display Configura tor Programming the Base Programmable Display 1 Connect to the meter through Communicator EXT 2 Click the Profile icon to open the Device Profile screen 3 Click the plus sign next to Revenue and Energy Settings 4 Double click Display Configuration You will see the Meter Display Mode Names screen For this screen and all of the screens in the Device Display Programmable Settings except for the Screen Assignments screen follow the directions given in Section 3 5 For the Screen Assignments screen follow the directions given here Electro Industries GaugeTech Doc E151701 The Leader In Power Monitoring and Smart Grid Solutions 3 Operating Instructions 5 Click the Screen Assignments tab You will see the screen shown below Device Display Programmable Settings THO Vonage THD Volsge 8 THD Velage C THD Custert THD Cunene B THD Cunert C Aggegso 1 Demand None None Nore Nora None None Nene None 6 Your Label for each mode appears
97. ators 13 7 14 EN50160 I EC61000 4 15 Flicker 14 1 14 1 Overview 14 1 14 2 Theory of Operation 14 1 4 3 Electro Industries GaugeTech Doc E151701 TOC 5 The Leader In Power Monitoring and Smart Grid Solutions Table of Contents A Transformer Loss Compensation Spreadsheet and Examples A 1 A 1 Calculating Values A 1 A 2 Excel Spreadsheet with Example Numbers A 1 B Blade Configuration for Forms 9S 36S and 45S B 1 B 1 1262 1272 Forms B 1 B 2 Blade Configuration Drawings B 2 Glossary GL 1 The Leader In Power Monitoring and Smart Grid Solutions Cj Electro Industries GaugeTech Doc E151701 TOC 6 1 Three Phase Power Measurement 1 Three Phase Power Measurement This introduction to three phase power and power measurement is intended to provide only a brief overview of the subject The professional meter engineer or meter technician should refer to more advanced documents such as the EEI Handbook for Electricity Metering and the application standards for more in depth and technical coverage of the subject 1 1 Three Phase System Configurations Three phase power is most commonly used in situations where large amounts of power will be used because it is a more effective way to transmit the power and because it provides a smoother delivery of power to the end load There are two commonly used connections for three phase power a wye connection or a delta connection Each connection has several different manife
98. c E151701 The Leader In Power Monitoring and Smart Grid Solutions 12 4 12 Switchboard Meter LL 6 125 A 15 557cm 5 750 M 14 605cm 0 188 LL 010 025cm 001 0025cm 0 477cm I F RO 10 TYP 2 296 5 831 cm AX 90 250 0 635cm 8 625 21 907cm 4 375 11 112cm Figure 12 6 Switchboard Meter Cutout IMPORTANT Check drill holes for the mounting screw you are using to insure that the mounting screw fits the box tightly enough to hold the box in place You can use a washer for a slightly smaller mounting screw Electro Industries GaugeTech Doc E151701 12 5 The Leader In Power Monitoring and Smart Grid Solutions 12 Switchboard Meter 12 4 Installation The Switchboard meter provides easy installation and removal from installation IMPORTANT Before installing the meter check the battery connections see Sections 6 2 and 5 4 4 1 Insert the case into a prepared mounting hole Secure with mounting screws 2 Slide the meter into the case and secure it by sliding the chassis levers until they snap into place Connectors for the following are located on the back of the meter The connectors automatically plug into the available connectors on the mounting board see Figure 12 8 Pulse Outputs Four Channels e Status Inputs e Phone e Line Network e Power In e COM4 COM1 e IRIG B e Modem Gateway RS485 3 Position t
99. ch EIG Founded in 1975 by engineer and inventor Dr Samuel Kagan Electro Industries GaugeTech changed the face of power monitoring forever with its first breakthrough innovation an affordable easy to use AC power meter More than thirty years since its founding Electro Industries GaugeTech the leader in power monitoring and control continues to revolutionize the industry with the highest quality cutting edge power monitoring and control technology on the market today An ISO 9001 2000 certified company EIG sets the industry standard for advanced power quality and reporting revenue metering and substation data acquisition and control EIG products can be found on site at mainly all of today s leading manufactur ers industrial giants and utilities EIG products are primarily designed manufactured tested and calibrated at our facil ity in Westbury New York Electro Industries GaugeTech Doc E151701 The Leader In Power Monitoring and Smart Grid Solutions This page intentionally left blank Electro Industries GaugeTech Doc E151701 The Leader In Power Monitoring and Smart Grid Solutions vi Table of Contents Table of Contents 1 Three Phase Power Measurement 1 1 1 1 Three Phase System Configurations 1 1 1 1 1 Wye Connection 1 1 1 1 2 Delta Connection 1 4 1 2 Power Energy and Demand 1 8 1 3 Reactive Energy and Power Factor 1 12 1 4 Harmonic Distortion 1 14 1 5 Power Quality 1
100. ck we recommended you use such shorting switches blocks Make sure the CTs second ary are shorted before disconnecting them from the meter s current input terminals 4 Electro Industries GaugeTech Doc E151701 11 9 The Leader In Power Monitoring and Smart Grid Solutions 11 Electrical Installation FORM 9S TRANSFORMER RATED 3 SERVICE DELTA 4WIRE NO PTs 3 CTs LINE 1 v3 V2 v1 IN 2 Rg LOAD Figure 11 5 Form 9S 4 Wire Delta no PTs 3 CTs e The protective ground connections for the transformers are omitted in the diagrams and are not required for the meter to work properly However we strongly recommend those connections to reduce shock hazard e Shorting switches blocks for the current transformers secondary side are also not shown To prevent electrical shock we recommended you use such shorting switches blocks Make sure the CTs second ary are shorted before disconnecting them from the meter s current input terminals 3 Electro Industries GaugeTech l The Leader In Power Monitoring and Smart Grid Solutions Doc E151701 11 10 11 Electrical Installation FORM 9S TRANSFORMER RATED 3 SERVICE DELTA 4WIRE 3 PTs 3 CTs LINE N V3 V2 V1 N 2 1 LOAD Figure 11 6 Form 9S 4 Wire Delta 3 PTs 3 CTs e The protective ground connections for the transformers are omitted in the
101. cm NOTE The P40N is not intended for new applications 75 1 438 Sq 1 91 Q U Oo a D gt 3 65 cm M P4ON Front Dimensions PAON Side Dimensions Legacy P40N Dimensions 4 790 4 54em 1 068 2 71cm M 5 274 113 40cm 1 000 2 54cm jas 5 274 13 40cm _ ty P40N Front and Side Dimensions Figure 6 6 P40N P40N Mounting Dimensions Cj Electro Industries GaugeTech Doc E151701 The Leader In Power Monitoring and Smart Grid Solutions 6 Hardware Installation 919 18 9126 a _1 6887 4x 0 200 4 28 cm 3 0151 8 572cm 04 00 10 16cm Figure 6 7 P40N P40N ANSI Mounting Electro ee Tech The Leader In r Monitoring and Smart Grid Solutio Doc E151701 6 12 6 Hardware Installation 6 4 Mounting the Nexus External 1 O Modules Connect multiple 1 0 modules by inserting male RS485 side ports into female side ports then screw each module into the next using a flathead screwdriver Work from left to right Secure the mounting brackets to both ends of a group of I O modules or both sides of an individual module using the screws supplied 440 pan head screws Next secure the brackets to a flat surface using a 8 screw with a lock washer 5 629 14 30cm 3X 1 301 3 305cm 1 125 2 858cm FN 2 Mounting Bracket I 4 090 229cm J Mounting Bracket 4 188 10 638cm VVV VVU VVU DT 1
102. concerning the Flicker log 14 6 Polling through a Communication Port The Pinst Pst Pst Max Pst Min Plt Plt Max Plt Min values can be polled through the Communications Port Refer to the Nexus 1262 1272 meters Modbus and DNP Mapping manuals for register assignments and data definitions 14 7 Log Viewer 1 Open Log Viewer by selecting the Open Logs icon from Communicator EXT s Icon bar 2 Using the menus at the top of the screen select a meter time ranges and values to access 3 Click the Flicker icon The values and the associated time stamps when the values occurred are displayed in a grid box Use the buttons at the bottom of the screen to create a graph or export the data to another program e Graphed values include Pst and Plt Va Vb and Vc e Displayed values include Pst and Plt Max and Min for Va Vb and Vc NOTE Max and Min values are only displayed they cannot be graphed However Max and Min values are available for export Cj Electro Industries GaugeTech Doc E151701 14 9 The Leader In Power Monitoring and Smart Grid Solutions 14 EN50160 IEC61000 4 15 Flicker 14 8 Performance Notes Pst and PIt average time are synchronized to the clock e g for a 10 minute average the times will occur at 0 10 20 etc The actual time of the first average can be less than the selected period to allow for initial clock synchronization If the wrong frequency is chosen e g 50Hz selection for
103. connects to the meter via the Network using a Device Address of 1 and the assigned IP Address Follow these steps 1 Double click on the Communicator EXT icon to open the software 2 Click the Connect icon in the icon tool bar 3 You will see the Connect screen Click the Network button at the top of the screen The screen will change to one requesting the following information Device Address 1 Host IP Address per your network administrator Example 10 0 0 1 Network Port 502 Protocol Modbus TCP NOTE See Section 5 7 for the factory settings 4 Click the Connect button at the bottom of the screen Communicator EXT connects to the meter via the Network 5 For the Modem connection follow the instructions in Section 5 4 4 Electro Industries GaugeTech Doc E151701 5 39 The Leader In Power Monitoring and Smart Grid Solutions 5 Serial Communication Wiring 5 7 Factory Settings You can use Communicator EXT to connect to a meter with the INP200 INP202 option for the first time or at any time until the settings are changed using the following factory settings Device Address 1 IP Address 10 0 0 1 Network Port 502 Protocol Modbus TCP 4 Electro Industries GaugeTech Doc E151701 The Leader In Power Monitoring and Smart Grid Solutions 5 Serial Communication Wiring This page intentionally left blank Electro Industries GaugeTech Doc E151701 The Leader In Power Monitorin
104. ction There are three cables to connect for the INP202 Option An RS485 Gateway cable an RJ45 Ethernet cable and an RJ11 Modem cable are inserted into the cables coming from the back of the Nexus meter with the INP202 Ethernet Modem Option Refer to Figure 6 2 for details on cables Make the software connection using the following steps 1 Using Port 1 or Port 4 RS485 connection connect a PC to the meter An RS232 RS485 converter may be required e g Electro Industries Unicom 2500 2 Double click on Communicator EXT Software to open it 3 Click the Quick Connect or the Connection Manager icon in the icon tool bar 4 Click the Serial Port button Make sure data matches the meter then click Connect Set the Network using the following steps Refer to Section 4 3 5 of the Communicator EXT User Manual for more details Cj Electro Industries GaugeTech Doc E151701 5 31 The Leader In Power Monitoring and Smart Grid Solutions 5 Serial Communication Wiring 1 From the Device Profile menu click General Settings gt Communications gt and then click on one of the listed ports 2 You will see the Device Profile Communications Settings screen In the Network Settings section enter data provided by your systems manager IP Address 10 0 0 1 Example Subnet Mask 255 255 255 0 Example Default Gateway 0 0 0 0 Example Computer Name NETWORK Example After the Network parameters are set Communicator EXT
105. ctive power is a critical component of the total power picture because almost all real life applications have an impact on reactive power Reactive power and power factor concepts relate to both load and generation applications However this discussion will be limited to analysis of reactive power and power factor as they relate to loads To simplify the discussion generation will not be considered Real power and energy is the component of power that is the combination of the voltage and the value of corresponding current that is directly in phase with the voltage However in actual practice the total current is almost never in phase with the voltage Since the current is not in phase with the voltage it is necessary to consider both the inphase component and the component that is at quadrature angularly rotated 90 or perpendicular to the voltage Figure 1 9 shows a single phase voltage and current and breaks the current into its in phase and quadrature components Figure 1 9 Voltage and Complex Current The voltage V and the total current I can be combined to calculate the apparent power or VA The voltage and the in phase current Ip are combined to produce the real power or watts The voltage and the quadrature current Ix are combined to calculate the reactive power The quadrature current may be lagging the voltage as shown in Figure 1 9 or it may lead the voltage When the quadrature current lags the voltage the load is
106. d to the reference level This simulates the behavior of a lamp e Block 3 is composed of a cascade of two filters and a measuring range selector In this implementation a log classifier covers the full scale in use so the gain sdection is automatic and not shown here The first filter eliminates the DC component and the double mains frequency components of the demodulated output The configura tion consists of a 05 Hz Low High Pass filter and a 6 Pole Butterworth Low Pass filter located at 35 Hz The second filter is a weighting filter that simulates the response of the human visual system to sinusoidal Voltage fluctuations of a coiled filament gas filled lamp 60 W 230 V The filter implementation of this function is as specified in IEC 61000 4 15 4 Electro Industries GaugeTech Doc E151701 14 1 The Leader In Power Monitoring and Smart Grid Solutions 14 EN50160 IEC61000 4 15 Flicker e Block 4 is composed of a squaring multiplier and a Low Pass filter The Human Flicker Sensation via lamp eye and brain is simulated by the combined non linear response of Blocks 2 3 and 4 e Block 5 performs an online statistical cumulative probability analysis of the flicker level Block 5 allows direct calculation of the evaluation parameters Pst and PIt Flicker is computed using the three phase to neutral Voltages in Wye configurations and the three phase to phase Voltages when in Delta Evaluation occurs in the follow ing for
107. de n Phase A Figure 1 6 Three Phase Wye Load Illustrating Kirchhoff s Law and Blondell s Theorem Blondell s Theorem is a derivation that results from Kirchhoff s Law Kirchhoff s Law states that the sum of the currents into a node is zero Another way of stating the same thing is that the current into a node connection point must equal the current out of the node The law can be applied to measuring three phase loads Figure 1 6 shows a typical connection of a three phase load applied to a three phase four wire service Kirchhoff s Law holds that the sum of currents A B C and N must equal zero or that the sum of currents into Node n must equal zero If we measure the currents in wires A B and C we then know the current in wire N by Kirchhoff s Law and it is not necessary to measure it This fact leads us to the conclusion of Blondell s Theorem that we only need to measure the power in three of Electro Industries GaugeTech The Leader In Power Monitoring and Smart Grid Solutions Doc 151701 1 7 1 Three Phase Power Measurement the four wires if they are connected by a common node In the circuit of Figure 1 6 we must measure the power flow in three wires This will require three voltage coils and three current coils a three element meter Similar figures and conclusions could be reached for other circuit configurations involving Delta connected loads 1 2 Power Energy and Demand It is quite common to
108. der e PT Ratio e CT Ratio Group 4 External Display Units Primary Secondary Select either Primary or Secondary units for the External Display using the Communi cator EXT software see the Communicator EXT User Manual e When Primary is selected the Display shows all readings in Primary units based on the user programmed PT and CT Ratios e When Secondary is selected the Display shows all readings in Secondary units Group 5 Firmware Versions and Serial Numbers Use the Left Right arrows to access the following readings in order Cj Electro Industries GaugeTech Doc E151701 9 11 The Leader In Power Monitoring and Smart Grid Solutions 9 Using the External Displays e Run Time External Display Run Time DSP RunTime Comm e Boot External Display Boot DSP Boot Comm e Serial Number External Display Serial Number Nexus Monitor 5 Electro Industries GaugeTech Doc E151701 9 12 The Leader In Power Monitoring and Smart Grid Solutions 9 Using the External Displays 9 6 Navigation Map of Nexus Information Mode e Use Left Right arrow keys to navigate Readings Use Up Down arrows to scroll between groups Readings Meter Time ND CE O 0 Comm Comm Comm Comm Return Settings Settings Settings Settings To Port 1 Port 2 Port 3 Port 4 First Reading Return CT Ratio To First Reading PT Ratio Display Primary Secondary Return To First Reading Run time Boot Serial
109. diagrams and are not required for the meter to work properly However we strongly recommend those connections to reduce shock hazard e Shorting switches blocks for the current transformers secondary side are also not shown To prevent electrical shock we recommended you use such shorting switches blocks Make sure the CTs second ary are shorted before disconnecting them from the meter s current input terminals Cj Electro Industries GaugeTech Doc E151701 11 11 The Leader In Power Monitoring and Smart Grid Solutions 11 Electrical Installation FORM 9S TRANSFORMER RATED 3 SERVICE DELTA 4WIRE NO PTs 2 CTs LINE N e 1 LOAD Figure 11 7 Form 9S 4 Wire Delta no PTs 2 CTs e The protective ground connections for the transformers are omitted in the diagrams and are not required for the meter to work properly However we strongly recommend those connections to reduce shock hazard e Shorting switches blocks for the current transformers secondary side are also not shown To prevent electrical shock we recommended you use such shorting switches blocks Make sure the CTs second ary are shorted before disconnecting them from the meter s current input terminals Ci Electro Industries GaugeTech The Leader In Power Monitoring and Smart Grid Solutions Doc E151701 11 12 11 Electrical Installation FORM 9S TRANSFORMER RATED 3 SERVICE DE
110. e phase voltages and currents are usually represented with a phasor diagram A phasor diagram for the typical connected voltages and currents is shown in Figure 1 2 Figure 1 2 Phasor Diagram Showing Three phase Voltages and Currents Electro Industries GaugeTech The Leader In Power Monitoring and Smart Grid Solutions Doc 151701 1 2 1 Three Phase Power Measurement The phasor diagram shows the 120 angular separation between the phase voltages The phase to phase voltage in a balanced three phase wye system is 1 732 times the phase to neutral voltage The center point of the wye is tied together and is typically grounded Table 1 1 shows the common voltages used in the United States for wye connected systems Phase to Ground Voltage Phase to Phase Voltage 120 volts 208 volts 277 volts 480 volts 2 400 volts 4 160 volts 7 200 volts 12 470 volts 7 620 volts 13 200 volts Table 1 Common Phase Voltages on Wye Services Usually a wye connected service will have four wires three wires for the phases and one for the neutral The three phase wires connect to the three phases as shown in Figure 1 1 The neutral wire is typically tied to the ground or center point of the wye In many industrial applications the facility will be fed with a four wire wye service but only three wires will be run to individual loads The load is then often referred to as a delta connected load but the s
111. e are also not shown To prevent electrical shock we recommended you use such shorting switches blocks Make sure the CTs second ary are shorted before disconnecting them from the meter s current input terminals 4 Electro Industries GaugeTech Doc E151701 12 13 The Leader In Power Monitoring and Smart Grid Solutions 12 Switchboard Meter SERVICE DELTA 4WIRE NO PTs 2 CTs E OK one SE cH1 cH2 cH3 cHa Gateway TONI ON ee ic B com1 coma HIGH SPEED ower In Electro Industries 2 1 i GaugeTech o www electroind com Caution Power Supply Input on new units is configured differently Please check wiring carefully v1 a e v2 o V3 o LOAD Figure 12 13 9Z Transformer Rated 3 Wire Delta no PTs 2 CTs e The protective ground connections for the transformers are omitted in the diagrams and are not required for the meter to work properly However we strongly recommend those connections to reduce shock hazard e Shorting switches blocks for the current transformers secondary side are also not shown To prevent electrical shock we recommended you use such shorting switches blocks Make sure the CTs second ary are shorted before disconnecting them from the meter s current input terminals 4 Electro Industries GaugeTech Doc E151701 12 14 The Leader In Power Monitoring and Smart Grid Solutions 12 Switchboard Meter SERVICE
112. e time intervals usually 15 minutes Example A typical setting of 15 minutes produces an average value every 15 minutes at 12 00 12 15 12 30 etc for power reading over the previous fifteen minute interval 11 45 12 00 12 00 12 15 12 15 12 30 etc Rolling Sliding Window Demand Rolling Window Demand functions like multiple overlapping Block Window Demands The programmable settings provided are the number and length of demand subinter vals At every subinterval an average arithmetic mean of power readings over the subinterval is internally calculated This new subinterval average is then averaged arithmetic mean with as many previous subinterval averages as programmed to produce the Rolling Window Demand Example With settings of 3 five minute subintervals subinterval averages are com puted every 5 minutes 12 00 12 05 12 15 etc for power readings over the previ ous five minute interval 11 55 12 00 12 00 12 05 12 05 12 10 12 10 12 15 etc Further every 5 minutes the subinterval averages are averaged in groups of 3 12 00 12 05 12 10 12 15 etc to produce a fifteen 5x3 minute average every 5 minutes rolling sliding every 5 minutes 11 55 12 10 12 00 12 15 etc 4 Electro Industries GaugeTech Doc E151701 Le The Leader In Power Monitoring and Smart Grid Solutions 13 Meter Calculations Thermal Demand Traditional analog Watt hour Wh meters use heat sensitive elements to
113. e will operate with the following default parameters Address 247 F7H Baud Rate 57600 Baud Transmit Delay Time 20 msec Some situations will cause the device to operate with the above Default Parameters See Section 10 4 for details of Default Mode 10 7 3 Normal Mode Normal Mode consists of one process the device accepts new commands to control the relays Electro Industries GaugeTech Doc E151701 The Leader In Power Monitoring and Smart Grid Solutions 10 12 10 External 1 0 Modules 10 8 Digital Solid State Pulse Output KYZ Module Digital Solid State Pulse Output Module Specifications Model Number 4PO1 Communication RS485 Modbus RTU Programmable Baud Rates 4800 9600 19200 38400 57600 Power Requirement 12 20VDC 50 200mA Operating Temperature 20 to 70 C 4 to 158 F Voltage Rating Up to 300VDC Commands Accepted Read and Write with at least 4 registers of data per command Memory 256 Byte IC EEPROM for storage of programmable set tings and non volatile memory Factory Settings Modbus Address 160 Baud Rate 57600 Transmit Delay Time 0 Default Settings Reset Button Modbus Address 247 Baud Rate 57600 Transmit Delay Time 20msec 10 8 1 Overview The KYZ Pulse Output Modules have 4 KYZ Pulse Outputs and accept Read and Write Commands with at least 4 registers of d
114. eTech Doc E151701 8 6 The Leader In Power Monitoring and Smart Grid Solutions 8 Transformer Loss Compensation Value Watts Loss 3 Phase 1 Phase 1 Phase kW No Load Loss Load Loss Enter 3 Phase or 1 Phase values If 3 Phase values are entered calculate 1 Phase values by dividing 3 Phase values by three Convert 1 Phase Loss Watts to 1 Phase kW by dividing 1 Phase Loss Watts by 1000 Value 3 Phase MVA 1 Phase MVA 1 Phase kVA Self Cooled Rating Enter 3 Phase or 1 Phase values If 3 Phase values are entered calculate 1 Phase values by dividing 3 Phase values by three Convert 1 Phase Self Cooled MVA to 1 Phase kVA by multiplying by 1000 Exciting Current Impedance Value Phase to Phase Phase to Neutral Test Voltage Volts Full Load Current Amps Test Voltage is generally Phase to Phase for three phase transformers Calculate Phase to Neutral Voltage by dividing Phase to Phase Voltage by the square root of 3 Calculate Full Load Current by dividing the 1 Phase kW Self Cooled Rating by the Phase to Neutral Voltage and multiplying by 1000 3 Electro Industries GaugeTech The Leader In Power Monitoring and Smart Grid Solutions Doc 151701 8 7 8 Transformer Loss Compensation Meter Installation Data Instrument Transformers Numerator Denominator Multiplier Potential Transforme
115. eating issue that causes the display to turn black try shielding the meter from direct sun light or otherwise provide some cooling effect to the meter Security e A hardware lock secures meter settings e Two 10 character passwords are configurable one password controls access to read meter digitally a separate password controls access to meter programming e An additional 8 level password sequence is available by user configuration 3 Electro Industries GaugeTech The Leader In Power Monitoring and Smart Grid Solutions Doc 151701 2 13 2 Meter Overview Internal Battery e Panasonic BR3032 3V Lithium Battery or equivalent maintains NVRAM and time during outages Modem Battery e 3V Lithium Battery with custom leads and velcro mounting maintains Dial Back feature during outages Call factory for replacement battery the part is BAT1 IRIG B Port Impedance e 1 8mA 5V Compliance e ANSI C12 20 Class 0 2 0 2 Accuracy e ANSI C37 90 1 Surge Withstand e ANSI C62 41 Surge Immunity e ANSI C12 18 Optical Port e IEC CISPR 14 1 Continuous EM Disturbance e IEC801 2 Electrostatic Discharge e IEC801 3 Radiated EM Immunity e IEC801 4 EFT e IEC687 Voltage Dips and Interruptions e IEC60687 Class 0 2 Accuracy e IEC 62053 22 0 2 Accuracy e IEC62052 11 General Requirements Mechanical Properties Climactic Influences 3 Electro Industries GaugeTech The Lead
116. econdary side are also not shown To prevent electrical shock we recommended you use such shorting switches blocks Make sure the CTs second ary are shorted before disconnecting them from the meter s current input terminals 4 Electro Industries GaugeTech Doc E151701 12 21 The Leader In Power Monitoring and Smart Grid Solutions 12 Switchboard Meter This page intentionally left blank 3 Electro Industries GaugeTech Doc E151701 12 22 l The Leader In Power Monitoring and Smart Grid Solutions 13 Meter Calculations 13 Meter Calculations 13 1 Measurements and Calculations The Nexus 1262 1272 Meter measures many different power parameters Following is a list of the formulas used to perform calculations with samples for Wye and Delta services Samples for Wye Va Vp Ver jar iby c in Samples for Delta Vab Vber Yea lar iby ic Root Mean Square RMS of Phase Voltages N number of samples For Wye x a b c Root Mean Square RMS of Line Currents N number of samples For Wye x a b c n For Delta x a b c RMS Electro Industries GaugeTech The Leader In Power Monitoring and Smart Grid Solutions Doc E151701 13 1 13 Meter Calculations Root Mean Square RMS of Line Voltages N number of samples For Wye x y a borb corc a For Delta xy ab bc ca Power Watts per phase N number of samples For Wye x a b c N Dx Ole
117. efined screens e You can edit the screen number e You can edit the screen label title e You can create a new screen based on the pre defined screen but you will still only be able to change the screen number and or label NOTE Some of the pre defined screens cannot be customized as described above The table below lists these pre defined screens and tells what can be changed in them Pre defined LCD Screen Number Description Editing Options Default Value 18 Phasors None 20 VAR PF amp Frequency Title 21 26 Harmonics Title 60 Segment check None 64 Optical Port Settings Title 65 Comm Ports Title 66 Nexus Status Title 67 Firmware Versions Title 68 Nexus Info Title 76 77 Rolling Block Demand Title 80 89 TOU Energy Title 90 93 TOU Demand Title 94 95 TOU VARh Title 1 When you click Edit after selecting a pre defined screen in the Available screens list or right click to select Create a new screen based on selected screen you see the LCD Screen Selection screen See the example screen that follows Electro Industries GaugeTech The Leader In Power Monitoring and Smart Grid Solutions Doc E151701 3 Operating Instructions LCD Screen Selection Predera Pre RARE Predefined with custom labeling Uim detrnd 2 The button at the top of the screen reflects the type of screen you are editing or copying either Pre
118. eived e Block W Demand Delivered e Block W Demand Received e W Demand Last Reset e Cumulative W Demand Backlight The Backlight cannot be set to stay on indefinitely It turns off after a programmed interval one hour is the maximum setting If the backlight times out and is off swipe the Mode Switch once to turn the backlight on and redirect the screen Electro Industries GaugeTech Doc E151701 The Leader In Power Monitoring and Smart Grid Solutions 3 Operating Instructions 3 3 1 Finding Your Display s Firmware Versions To find your LCD display s firmware versions follow these steps 1 Connect to the meter though Communicator EXT software 2 Click the Profile icon in the Title bar 3 Click Revenue and Energy Settings gt Display Configuration to open the Device Display Programable Settings screen shown below Line 1 Description View Mode 1 View Mode 2 Alternad View Mode 3 Test Firmware versions Boot Version Run Version oo MECS CN MON 4 The LCD display s firmware versions are shown in the bottom left portion of the screen If the Boot version is 30 or higher and the Run version is 100 or higher follow the instructions in Section 3 5 If the Boot and Run versions are less than 30 100 follow the instructions in Section 3 6 3 Electro Industries GaugeTech Doc E151701 3 9 The Leader In Power Monitoring and Smart Grid Solutions 3 Operating Instructions 3 4
119. elay Type Mechanically latching Communication RS485 Modbus RTU Programmable Baud Rates 4800 9600 19200 38400 57600 Power Requirement 2 0W max 12 20VDC Operating Temperature 20 to 70 C 4 to 158 F Switching Voltage AC 250V DC 30V Switching Power 1250VA 150W Switching Current 5A Mechanical Life 5 x 107 switching operations Electrical Life 10 switching operations at rated current Factory Settings Modbus Address 156 Baud Rate 57600 Transmit Delay Time 0 Default Settings Reset Button Modbus Address 247 Baud Rate 57600 Transmit Delay Time 20msec 10 7 1 Overview The Relay Output Module consists of four Latching Relay Outputs In Normal Mode the device accepts commands to control the relays Relay output modules are trig gered by limits programmed with the Communicator EXT software See the Communi cator EXT User Manual for details on programming limits The Modbus Map for the Analog Output Module and operating details can be found in the Modbus Communicating 1 0 Modules Manual Each latching relay will hold its state in the event of a power loss Cj Electro Industries GaugeTech Doc E151701 10 11 l The Leader In Power Monitoring and Smart Grid Solutions 10 External 1 0 Modules 10 7 2 Communication Maximum registers per request read or write is 4 registers The devic
120. ent of the harmonic frequencies that make up the distortion portion of the waveform in Figure 1 11 500 Time o Amps 3rd harmonic 5th harmonic 500 7th harmonic Total fundamental Figure 1 12 Waveforms of the Harmonics Electro Industries GaugeTech The Leader In Power Monitoring and Smart Grid Solutions Doc 151701 1 15 1 Three Phase Power Measurement The waveforms shown in Figure 1 12 are notsmoothed but do provide an indication of the impact of combining multiple harmonic frequencies together When harmonics are present it is important to remember that these quantities are operating at higher frequencies Therefore they do not always respond in the same manner as 60 Hz values Inductive and capacitive impedance are present in all power systems We are accus tomed to thinking about these impedances as they perform at 60 Hz However these impedances are subject to frequency variation X j L and Xc 1 joC At 60 Hz 377 but at 300 Hz 5th harmonic 1 885 As frequency changes impedance changes and system impedance characteristics that are normal at 60 Hz may behave entirely differently in the presence of higher order harmonic waveforms Traditionally the most common harmonics have been the low order odd frequencies such as the 3rd 5th 7th and 9th However newer new linear loads are introducing significan
121. er The battery should provide more than one year of service during outage conditions time on battery backup A LOW BATTERY indicator on the display screen tells you when replacement is needed Follow these steps to install the battery 1 Before replacing the battery download all memory files to your computer as data may be lost 2 Remove power from the meter 3 Remove the external meter cover and the internal shroud The Leader In Power Monitoring and Smart Grid Solutions Gi Electro Industries GaugeTech Doc 151701 6 8 6 Hardware Installation 4 Remove the old battery with a screwdriver or similar tool 5 Place the new battery in the battery holder IMPORTANT You must insert the replacement battery into the holder correctly Otherwise proper contact will not be achieved and the meter may lose log memory and time functions Figure 6 6 Battery Holder Detail a Make sure the on the battery is facing UP and toward you b Insert the RIGHT SIDE of the battery UNDER the 2 clips on the right side of the holder while gently pushing the battery against the INSIDE RIGHT WALL of the battery holder Side A in Figure 6 6 c Gently push the LEFT SIDE of the battery in until it snaps into place Side B in Figure 6 6 6 Replace the internal shroud and the external meter cover 7 Power up the meter 8 Reset meter time using Communicator software unless IRIG B is connected If IRIG B is connected time i
122. er In Power Monitoring and Smart Grid Solutions Doc 151701 2 Meter Overview 2 7 Nexus 1262 1272 Meter Logging Specifications Model Memory Mistorical Historical EPMA MEL form Flicker Output Lost System ITI C Log 1272 Standard 85 Days 133 Days 512 1024 63 1536 256 1024 1024 1272 Advanced 555 Days 133 Days 512 1024 95 5120 256 1024 1024 1262 Standard 69 Days 32 Days N A 512 N A N A 512 1024 1024 1262 Advanced 480 Days 133 Days N A 512 N A N A 512 1024 1024 Assumes logs store 4 scaled energy readings every 15 minutes Number of events recorded assumes 14 parameters monitored Number of waveform records Each record may be from 8 to 64 cycles in duration depending upon meter setup 2 8 DNP V3 00 Level 2 Nexus 1262 and 1272 meters support DNP V3 00 Level 2 DNP Level 2 Features e Up to 136 measurements 64 Binary Inputs 32 Binary Counters 64 Analog Inputs can be mapped to DNP Static Points over 3000 in the customizable DNP Point Map e Up to 16 Relays and 8 Resets can be controlled through DNP Level 2 e Report by Exception Processing DNP Events Deadbands can be set on a per point basis e Available Freeze commands are Freeze Freeze No Ack Freeze with Time and Freeze with Time No Ack e Freeze with Time commands enable the Nexus meter to have internal time driven Frozen and Frozen Event data When the
123. er and the resulting energy that would be transmitted as a result of the illustrated power values For this illustration it is assumed that the power level is held constant for each minute when a measurement is taken Each bar in the graph will represent the power load for the one minute increment of time In real life the power value moves almost constantly The data from Figure 1 7 is reproduced in Table 2 to illustrate the calculation of energy Since the time increment of the measurement is one minute and since we Electro Industries GaugeTech The Leader In Power Monitoring and Smart Grid Solutions Doc 151701 1 8 1 Three Phase Power Measurement specified that the load is constant over that minute we can convert the power reading to an equivalent consumed energy reading by multiplying the power reading times 1 60 converting the time base from minutes to hours 80 70 kilowatts e 60 50 40 30 20 10 T T T T T T T T T T T T T T 1 2 3 4 5 6 7 8 9 10 11 14 15 12 13 Time minutes Figure 1 7 Power Use over Time Electro Industries GaugeTech The Leader In Power Monitoring and Smart Grid Solutions Doc E151701 1 Three Phase Power Measurement qe omer eneray Amies minute FM kWh kWh 1 30 0 50 0 50 2 50 0 83 ET 3 40 0 67 2 00 4 55 0 92 2 92 5 60 1 00 3 92 6 60 1 00 4 92 7 7
124. er has some level of termination internally and usually resistors are not needed e Refer to the Cable Color Key on pages 6 5 to 6 7 Cj Electro Industries GaugeTech Doc E151701 5 13 The Leader In Power Monitoring and Smart Grid Solutions 5 Serial Communication Wiring Male Side Port gt on I O Module Meter s Port 4 _ gt gt S Ry 120 Ohms Figure 5 10 Meter and I O Module Connections Electro Industries GaugeTech The Leader In Power Monitoring and Smart Grid Solutions Doc E151701 5 14 5 Serial Communication Wiring 5 3 9 Steps to Determine Power Needed Since the Nexus 1262 1272 meter s power supply does not supply power to the I O modules you need to use a power source such as EIG s PSIO which is designed for use with the I O modules Follow these steps to determine how many PSIO units you need 1 All I O modules are shipped pre programmed with a baud rate of 57600 and individual addresses Refer to the following table to determine the VA Ratings for the I O modules I O Module Factory Settings and VA Ratings Model Module Address VA Rating imAON4 0 1mA 4 Analog 128 2 7VA Outputs imAON8 0 1mA 8 Analog 128 3 2VA Outputs 20mAON4 4 20mA 4 Analog 132 5 0VA Outputs 20mAON8 4 20mA 8 Analog 132 8 5VA Outputs 8AI1 0 imA 8 Analog 136 2 3VA Inputs 8AI2 0 20mA 8 Analog 140 2 3VA Inputs
125. er you make your entries click OK You then return to the previous screen Screen Assignments tab 4 When you finish programming the LCD display click e Save to save the LCD Programmable Settings to a nds2 file e Upload to upload the LCD Programmable Settings to the connected meter e Cancel to exit the screen without saving any changes Electro Industries GaugeTech Doc E151701 3 24 The Leader In Power Monitoring and Smart Grid Solutions 3 Operating Instructions Power and Energy Display Tab 1 Click the Power and Energy Display tab You will see the screen shown below Device Display Programmable Settings r Pomary Energy Prmary Power Number of Digits to Display Decimal Point Location E Display Leading Zerous rt nergy Display Multiply By Constant Apply to the Demand Registers as well Update Dooley I Rereve tor Onley B Conal ETE ETE te 2 Enter settings for Power and Energy e Number of Digits 4 9 Primary Power e Decimal Point Location 0 3 Primary Power Display Leading Zeroes check if desired e Energy Display a Select the Multiply by Constant value b Click the checkbox next to Apply to the Demand Registers as well if applicable A preview appears at the bottom of the screen NOTES e Settings on this screen control the display of Energy related numbers Be careful to match the values on the display with those in the historical logs
126. ersion 30 Base meter s COM Run Time 624 or higher gives you the Display Configurator This feature lets you customize the meter s LCD screens to display any measured readings The Display Configurator features three View modes see Section 3 3 and has memory for up to 75 screens distributed however you want among the three View modes The flexibility of the Display Configurator allows you to customize the LCD display for any application Additional features of the Display Configurator are as follows e You can add screen numbers and or labels titles e You can add scaling and multiplier factors to the screen data e You can use the screens to view data from pulse inputs such as water gas steam etc e You can use a combination of pre defined and customized displays See Section 3 6 1 for a list of the pre defined displays IMPORTANT You use the Nexus 1262 1272 meter s Modbus map to identify the data you want to display in a customized display screen The Modbus map for the Nexus 1262 1272 meter is contained in the Modus Protocol and Register Map for Nexus 1252 1262 1272 Meters The manual can be downloaded from EIG s website www electroind com pdf modbus2 pdf To access the Display Configurator s programming screens 1 Connect to the meter through Communicator EXT 2 Click the Profile icon to open the Device Profile screen 3 Click the plus sign next to Revenue and Energy Settings Cj Electro Industries Ga
127. erters The Nexus 1272 meter has two 16 bit A D converters and the Nexus 1262 meter has one The first converter which both meters have is for the real time measurements The second converter unique to the 1272 is for the waveform recorder The use of two A D converters ensures that both signals have maximum resolution accuracy and integrity The second converter also isolates energy sampling and calculations from the waveform fault recording requirements This provides both advanced energy and advanced waveform analysis 3 Electro Industries GaugeTech The Leader In Power Monitoring and Smart Grid Solutions Doc E151701 2 1 2 Meter Overview Real Time Measurements Processing Sampling Multiplexing and Signal Conditioning Waveform Recording Processing Figure 2 1 How the Nexus 1262 1272 Meter Processes Inputs The digitized signals are then passed to the appropriate processor Real time measurements are calculated in one processor and made available for meter readings and historical logs A separate processor performs waveform recording Calculated data and logs are stored in memory for delivery to displays external systems and download processes The meter includes a time synchronizing input port that accepts an industry standard IRIG B signal to synchronize meter time to standard universal time If there is no IRIG B signal the meter uses an internal 20 ppm crystal or the primary power line frequency t
128. ervice to the facility is still a wye service it contains four wires if you trace the circuit back to its source usually a transformer In this type of connection the phase to ground voltage will be the phase to ground voltage indicated in Table 1 even though a neutral or ground wire is not physically present at the load The transformer is the best place to determine the circuit connection type because this is a location where the voltage reference to ground can be conclusively identified Electro Industries GaugeTech The Leader In Power Monitoring and Smart Grid Solutions Doc E151701 1 Three Phase Power Measurement 1 1 2 Delta Connection Delta connected services may be fed with either three wires or four wires In a three phase delta service the load windings are connected from phase to phase rather than from phase to ground Figure 1 3 shows the physical load connections for a delta service Ve Phase 3 Phase 2 Ve Phase 1 Va Figure 1 3 Three phase Delta Winding Relationship In this example of a delta service three wires will transmit the power to the load Ina true delta service the phase to ground voltage will usually not be balanced because the ground is not at the center of the delta Figure 1 4 shows the phasor relationships between voltage and current on a three phase delta circuit In many delta services one corner of the delta is grounded This means the phase to ground voltage will be zer
129. es a power factor quantity known as Total Power Factor It is called Total PF because it is based on the ratios of the power delivered The delivered power quantities will include the impacts of any existing harmonic content If the volt age or current includes high levels of harmonic distortion the power values will be affected By calculating power factor from the power values the power factor will include the impact of harmonic distortion In many cases this is the preferred method of calculation because the entire impact of the actual voltage and current are included A second type of power factor is Displacement Power Factor Displacement PF is based on the angular relationship between the voltage and current Displacement power fac tor does not consider the magnitudes of voltage current or power It is solely based on the phase angle differences As a result it does not include the impact of harmonic distortion Displacement power factor is calculated using the following equation Displacement PF cos Electro Industries GaugeTech The Leader In Power Monitoring and Smart Grid Solutions Doc 151701 1 13 1 Three Phase Power Measurement where 9 is the angle between the voltage and the current see Fig 1 9 In applications where the voltage and current are not distorted the Total Power Factor will equal the Displacement Power Factor But if harmonic distortion is present the two power factors will not be equal
130. etermine if a request packet from a Master device has been corrupted during transmission If the calculated value does not match the value in the request packet the Slave ignores the request A Current Transformer Ratio is used to scale the value of the current from a secondary value up to the primary side of an instrument transformer The sum of the previous billing period maximum demand readings at the time of billing period reset The maximum demand for the most recent billing period is added to the previously Electro Industries GaugeTech The Leader In Power Monitoring and Smart Grid Solutions Doc E154701 GL 3 Glossary accumulated total of the maximum demands Demand The average value of power or a similar quantity over a specified period of time Demand Interval A specified time over which demand is calculated Display User configurable visual indication of data in a meter DNP 3 0 A robust non proprietary protocol based on existing open standards DNP 3 0 is used to operate between various systems in electric and other utility industries and SCADA networks EEPROM Nonvolatile memory Electrically Erasable Programmable Read Only Memory that retains its data during a power outage without need for a battery Also refers to meter s FLASH memory Energy Register Programmable record that monitors any energy quantity Example Watt hours VAR hours VA hours Ethernet A type of LAN ne
131. ettes de l appareil et les sp cifi cations de tous les appareils avant d appliquer les tensions Ne pas faire de test HIPOT di lectrique une sortie une entr e ou un terminal de r seau EIG recommande d utiliser les fusibles pour les fils de tension et alimentations lec triques ainsi que des coupe circuits pour pr venir les tensions dangereuses ou endommagements de transformateur de courant si l unit Nexus 1262 1272 doit tre enlev e du service Un c t du transformateur de courant doit tre mis terre NOTE Les entr es actuelles doivent seulement tre branch es dans le transforma teur externe actuel par l installateur Le transformateur de courant doit tre approuv ou certifi et d termin pour le compteur actuel utilis IMPORTANT SI L QUIPEMENT EST UTILIS D UNE FA ON NON SP CIFI E PAR LE FABRICANT LA PROTECTION FOURNIE PAR L QUIPEMENT PEUT TRE ENDOMMAGEE 4 Electro Industries GaugeTech Doc E151701 11 3 l The Leader In Power Monitoring and Smart Grid Solutions 11 Electrical Installation NOTE II N Y A AUCUNE MAINTENANCE REQUISE POUR LA PREVENTION OU INSPEC TION NECESSAIRE POUR LA SECURITE CEPENDANT TOUTE REPARATION OU MAIN TENANCE DEVRAIT ETRE REALISEE PAR LE FABRICANT DEBRANCHEMENT DE L APPAREIL la partie suivante est consid r e l appareil de d branchement de l quipement UN INTERRUPTEUR OU UN DISJONC TEUR DEVRAIT ETRE INCLUS DANS L UTILISATION FINALE DE L EQUIPEME
132. exchange power energy and demand without differentiating between the three Because this practice can lead to confusion the differences between these three measurements will be discussed Power is an instantaneous reading The power reading provided by a meter is the present flow of watts Power is measured immediately just like current In many digital meters the power value is actually measured and calculated over a one second interval because it takes some amount of time to calculate the RMS values of voltage and current But this time interval is kept small to preserve the instantaneous nature of power Energy is always based on some time increment it is the integration of power over a defined time increment Energy is an important value because almost all electric bills are based in part on the amount of energy used Typically electrical energy is measured in units of kilowatt hours kWh A kilowatt hour represents a constant load of one thousand watts one kilowatt for one hour Stated another way if the power delivered instantaneous watts is measured as 1 000 watts and the load was served for a one hour time interval then the load would have absorbed one kilowatt hour of energy A different load may have a constant power requirement of 4 000 watts If the load were served for one hour it would absorb four kWh If the load were served for 15 minutes it would absorb of that total or one kWh Figure 1 7 shows a graph of pow
133. ext start of season is reached Accumulation can span into the following year If no following year is present the last accumulation for the year will end on 12 31 23 59 59 7 3 TOU Frozen and Active Registers The Nexus meter stores accumulations for the prior time periods When the end of a billing period is reached the Active period of time becomes stored as Frozen The registers are then cleared and accumulations resume using the next set of TOU schedules and register assignments from the stored calendar Frozen and Active Accumulations are always available 7 4 Updating Retrieving and Replacing TOU Calendars Communicator EXT software retrieves TOU calendars from the Nexus meter or from the computer s hard drive for review and edit Up to a maximum of twenty yearly calendars can be stored in the Nexus meter at any given time You may retrieve them one at a time a new calendar can be stored while a current calendar is in use Accumulations do not stop during calendar updates If a calendar is replaced while in use the accumulations for the current period will continue until the set end date At that point the current time will become the new start time and the settings of the new calendar will be used Reset the current accumulations if you replace a calendar in use A reset clears only the current accumulation registers This causes the current accumulations to use the present date as the start and accumulate
134. figuration Vary Male RS485 Side Port Figure 10 1 1 0 Module Components Cj Electro Industries GaugeTech Doc E151701 10 1 l The Leader In Power Monitoring and Smart Grid Solutions 10 External 1 0 Modules 10 1 1 Port Overview All Electro Industries I O Modules have ports through which they interface with other devices The port configurations are variations of the four types shown below Four Analog Outputs Eight Analog Outputs 0 1mA and 4 20mA 0 1mA and 4 20mA 0 1mA Analog Output Module COM o O RESET O Eight Analog Inputs Four Relay Outputs or 0 1mA 0 20mA Four KYZ Pulse Outputs 0 5Vdc 0 10Vdc or Eight Status Inputs 0 1mA Analog Input Module com INPUT 1 INPUT 2 INPUT 3 INPUT 4 INPUT 5 n1CT1CO N lt x INPUT 6 000000000000 fe 0 0 O O O O O INPUT 7 O inputs RESET O 4 Electro Industries GaugeTech Doc E151701 The Leader In Power Monitoring and Smart Grid Solutions 10 2 10 External 1 0 Modules 10 2 1 O Module Installation See Section 5 3 8 for wiring instructions for the external I O Modules and Section 6 4 for hardware installation instructions 10 2 1 Power Source for 1 O Modules The Nexus 1262 1272 does not supply power to the 1 0 Modules
135. for time synchroniza tion e If IRIG B is connected this form of time synchronization takes precedence over the internal clock If the GPS Signal is lost the internal clock takes over time keeping at the precise moment the signal is lost Line Frequency Clock Synchronization e All Nexus meters are equipped with Line Frequency Clock Synchronization which may be enabled or disabled for use instead of IRIG B If Line Frequency Clock Synchronization is enabled and power is lost the internal clock takes over at the precise moment power is lost Internal Clock Crystal e All Nexus meters are equipped with internal clocks crystals which are accurate to 20ppm and which can be used if IRIG B is not connected and or Line Frequency Clock Synchronization is not enabled DNP Time Synchronization e Using Communicator EXT you can set the meter to request time synchronization from the DNP Master Requests can be made from once per minute to once per day See the Nexus 1252 1262 1272 1500 DNP User Manual for instructions You can download the manual from EIG s website www electroind com pdf DNPv3 0_Level2 pdf Other Time Setting Tools e Tools gt Set Device Time For manual or PC time setting e Script amp Scheduler Time stamps retrieved logs and data Cj Electro Industries GaugeTech Doc E151701 5432 The Leader In Power Monitoring and Smart Grid Solutions 5 Serial Communication Wiring e MV90 Can synchronize time o
136. g and Smart Grid Solutions 6 Hardware Installation 6 Hardware Installation 6 1 Mounting the Nexus Socket Meter The Nexus 1262 1272 Socket meter is designed to mount into a standard meter socket Follow the Installation Summary below or follow the installation instructions on the meter socket to ensure that the unit is installed securely See Dimension figures below and on the following pages NOTE For Switchboard Meter dimensions and related information see Chapter 12 a A fi O EJ 696 17 68cm O lt 457 _ y a 6 96 gt 11 61cm 17 68cm a 6 2 gt 15 75cm Front View Side View Figure 6 1 Socket Meter Mounting Dimensions Installation Summary e Examine the labels to verify that the meter you are installing is in fact the correct form factor and service type Make sure that the socket and meter current class ratings are compatible e Make sure that all communication and auxiliary power wiring is accessible in case disconnection is required for any reason e Before applying power to the meter install batteries if not installed at the factory and check the connections if they are installed The meter has two batteries an Internal battery which is used to maintain non volatile readings and the real time clock and the Dial out Modem battery which is used by the INP2 option to dial out on an outage 4 Electro Industr
137. ge of Amps over the previous 15 minute interval The thermal average rises to 90 of the actual value in each time interval For example if a constant 100Amp load is applied the thermal average will indicate 90 amps after one time interval 99 amps after two time intervals and 99 9 amps after three time intervals Average Input Pulse When applied to Input Pulse Accumulations the Accumulations Average refers to the block fixed window average value of the input pulses 3 Electro Industries GaugeTech The Leader In Power Monitoring and Smart Grid Solutions Doc E154701 GL 1 Glossary Average Power When applied to power values Watts VARs VA the average is a calculated value that corresponds to the thermal average over a specified time interval The interval is specified by the user in the meter profile The interval is typically 15 minutes So the Average Watts is the thermal average of Watts over the previous 15 minute interval The thermal average rises to 90 of the actual value in each time interval For example if a constant 100kW load is applied the thermal average will indicate 90kW after one time interval 99kW after two time intervals and 99 9kW after three time intervals Bit A unit of computer information equivalent to the result of a choice between two alternatives Yes No On Off for example Or the physical representation of a bit by an electrical pulse whose presence or absence
138. geTech Doc 151701 The Leader In Power Monitoring and Smart Grid Solutions 3 Operating Instructions IMPORTANT All of the data items you select must be the same Modbus type for example F3 The Modbus type is listed in the Modbus map See the Example below Example To select 1 Cycle Phase A N Voltage find the starting register for the field in the Modbus manual See the figure below 1 Cycle Block 00090 00083 o 50 1 cycle Block Time Stamp 00094 00095 10 1 cycle Phase A N Voltage 42 31 9999 23 59 59 99 10 msec FS R 65536 v1 7D v7 1 65536 V sec ES R Decimal Starting register Item you are selecting Modbus Type is F5 is 00094 b Click Update to save the item s starting register address c Enter any additional items in the same way d When you finish entering items use the entry fields in the right portion of the screen to enter details for the items Modbus type and to enter scaling multiplier and data display settings The Modbus type information is found in Chapter 3 of the Nexus 1252 1262 1272 Meter Modbus Manual See the following example Example The item in the example above was Modbus type F5 Any additional items must be the same Modbus type Type 5 is described in Chapter 3 page 3 3 of the 1262 1272 Meter s Modbus manual as shown in the excerpt that follows 3 Electro Industries GaugeTech The Leader In Power Monitoring and Smart Grid Solutions
139. geTech Doc E151701 B 1 The Leader In Power Monitoring and Smart Grid Solutions B Blade Configuration for Forms 9S 36S 45S B 2 Blade Configuration Drawings Detailed drawings of the Blade configurations are offered below There are two configurations because the 9S and the 36S are the same There is a drawing showing the knockout holes for each configuration NOTE The forms referred to in this appendix comply with ANSI forms 9S 36S and 45S Figure B 2 Form 45S Base with Knock Out Holes Electro Industries GaugeTech Doc E151701 B 2 The Leader In Power Monitoring and Smart Grid Solutions Glossary Glossary 0 2 Second Values These values are the RMS values of the indicated quantity as calculated after approximately 200 milliseconds 3 cycles of sampling 1 Second Values These values are the RMS values of the indicated quantity as calculated after one second 60 cycles of sampling Alarm An event or condition in a meter that can cause a trigger or call back to occur Annunciator A short label that identifies particular quantities or values displayed for example kWh Average Current When applied to current values Amps the average is a calculated value that corresponds to the thermal average over a specified time interval The interval is specified by the user in the meter profile The interval is typically 15 minutes So Average Amps is the thermal avera
140. h Doc E151701 14 2 The Leader In Power Monitoring and Smart Grid Solutions 14 EN50160 IEC61000 4 15 Flicker The 3 second memory time constant in the flicker meter ensures that P 0 1 cannot change abruptly and no smoothing is needed for this percentile e Long Term Flicker Evaluation The 10 minute period on which the short term flicker severity is based is suitable for short duty cycle disturbances For flicker sources with long and variable duty cycles e g arc furnaces it is necessary to provide cri teria for long term assessment For this purpose the long term Plt is derived from the short term values over an appropriate period By definition this is 12 short term values of 10 minutes each over a period of 2 hours The following formula is used p t 1 2 3 are consecutive readings of the short term severity Pst Where Psti i 14 2 1 Summary Flicker Changes in the illumination of light sources due to cyclical Voltage variations Pinst Instantaneous flicker values in Perceptibility Units PU Pst Value based on 10 minute analysis Pit Value based on 12 Pst values Measurement Procedure 1 Original Signal with amplitude variations 2 Square demodulator 3 Weighted filter 4 Low pass filter 1st order 5 Statistical computing 4 Electro Industries GaugeTech Doc E151701 The Leader In Power Monitoring and Smart Grid Solutions 14 3 14 EN50160 IEC61000 4 15 Flic
141. he Switchboard case front against the four screw holes and secure it by turning the four built in screws in each of the corners See Figure 12 7 Electro Industries GaugeTech Doc E151701 The Leader In Power Monitoring and Smart Grid Solutions 12 6 12 Switchboard Meter Screws Figure 12 8 Switchboard Meter Back Showing Connectors Electro Industries GaugeTech Doc E151701 The Leader In Power Monitoring and Smart Grid Solutions 12 7 12 Switchboard Meter 12 5 Wiring Diagrams The wiring of the Switchboard meter is similar to that of the Socket meter Form Description Figure Wye no PTs 3 CTs 12 9 Wye 3 PTs 3 CTs 12 10 4 Wire Delta no PTs 3 CTs 12 11 4 Wire Delta 3 PTs 3 CTs 12 12 2 3 Wire Delta no PTs 2 CTs 12 13 3 Wire Delta 2 PTs 2 CTs 12 14 3 Wire Delta no PTs 2 CTs 12 15 3 Wire Delta 2 PTs 2 CTs 12 16 3 Wire Delta 2 PTs 3 CTs 12 19 3 Wire Delta no PTs 3 CTs 12 20 2 5 EL Wye no PTs 3 CTs 1217 36Z 2 5 EL Wye 2 PTs 3 CTs 12 18 Table 12 1 Switchboard Meter Configurations The meter snaps into place and is secured with levers and screws All input and output connections are made automatically as the meter is installed Refer to Section 12 4 and Figure 12 8 Wiring options are shown in
142. he back of the meter 1 Line connection for the outside line 2 Phone connection for your phone A standard telephone RJ11 plug connects the meter to a standard PSTN Public Switched Telephone Network The phone jack is the override of the modem function when the phone is in use With the device configured with the INP2 Option the meter has dial in capability and provides remote access to other Modbus based serial devices via the meter s RS485 Gateway over your phone line The meter will recognize and respond to a Modbus Address of 1 With any other address the command passes through the gateway and 4 Electro Industries GaugeTech Doc E151701 5 23 The Leader In Power Monitoring and Smart Grid Solutions 5 Serial Communication Wiring becomes a virtual connection between the Remote Modbus Master and any Modbus Slave connected to the RS485 Gateway 5 4 3 Dial In Function The modem continuously monitors the telephone line to detect an incoming call When an incoming call is detected the modem waits a user set number of rings and then answers the call The modem can be programmed to check for a password on an incoming call If the correct password is not provided the modem hangs up on the incoming call If sev eral unsuccessful incoming call attempts are received in a set time period the modem locks out future incoming calls for a user set number of hours When an incoming call is successfully connected the cont
143. he box next to that option b Click any of the other tabs to configure more options see Chapter 4 in the Communicator EXT User Manual for detailed instructions e FTP Client configure the FTP server settings e GE Protocol EGD configure GE s EGD protocol if the meter s firmware supports this e Alarm Email configure the alarm email notification settings e Computer Name DNS set a name DNS servers e DHCP enable DHCP functionality 3 Electro Industries GaugeTech The Leader In Power Monitoring and Smart Grid Solutions Doc 151701 5 29 5 Serial Communication Wiring e Firmware Update update the Network card s firmware e DNP for LAN WAN configure the settings for DNP3 LAN WAN DNP over the Ethernet c Click OK to save your settings and close the Advanced Network Option Settings screen 4 Click OK to save your communication settings and close the Communications Settings screen 5 Click Update Device to send the new profile to the meter After the Network parameters are set Communicator EXT connects to the meter via the Network using a Device Address of 1 and the assigned IP Address Follow these steps 1 Double click on the Communicator EXT icon to open the software 2 Click the Connect icon in the icon tool bar 3 You will see the Connect screen Click the Network button at the top of the screen The screen will change to one requesting the following information Device Addre
144. he three phases and the common neutral con ductor A current coil is required in each of the three phases In modern digital meters Blondell s Theorem is still applied to obtain proper metering The difference in modern meters is that the digital meter measures each phase voltage and current and calculates the single phase power for each phase The meter then sums the three phase powers to a single three phase reading Electro Industries GaugeTech The Leader In Power Monitoring and Smart Grid Solutions Doc 151701 1 6 1 Three Phase Power Measurement Some digital meters calculate the individual phase power values one phase at a time This means the meter samples the voltage and current on one phase and calculates a power value Then it samples the second phase and calculates the power for the second phase Finally it samples the third phase and calculates that phase power After sampling all three phases the meter combines the three readings to create the equivalent three phase power value Using mathematical averaging techniques this method can derive a quite accurate measurement of three phase power More advanced meters actually sample all three phases of voltage and current simultaneously and calculate the individual phase and three phase power values The advantage of simultaneous sampling is the reduction of error introduced due to the difference in time when the samples were taken Phase B Phase C a No
145. hese settings into nonvolatile memory the setting will take effect after the modem powers up e When programming the remote modem with a terminal program make sure the baud rate of the terminal program matches the Nexus meter s baud rate 5 3 12 Selected Modem Strings Modem String Setting Cardinal modem AT amp FEOF8 amp KONOS37 9 Zoom Faxmodem VFX AT amp FO amp KOSO 1 amp WO0 amp YO V 32BIS 14 4K Zoom Faxmodem 56Kx AT amp FO amp KO amp COSO0 1 amp W0 amp Dual Mode YO USRobotics Sportster AT amp FO amp N6 amp WOYO for 33 6 Faxmodem 9600 baud DIP switch setting Up Up Down Down Up Up Up Down USRobotics Sportster 56K AT amp FO amp WOYO Faxmodem Up Up Down Down Up Up DIP switch setting Up Down 5 3 13 High Speed Inputs Connection The Nexus 1262 1272 meter s built in High Speed Inputs can be used in two ways e Attaching status contacts from relays breakers or other devices for status or wave form initiation e Attaching the KYZ pulse outputs from other meters for pulse counting and totalizing Even though these inputs are capable of being used as high speed digital fault record ing inputs they serve a dual purpose as KYZ counters and totalizers The function in 4 Electro Industries GaugeTech Doc E151701 5 18 The Leader In Power Monitoring and Smart Grid Solutions 5 Serial Communication Wiring use is programmable in the meter and is configured via Comm
146. i v1 e e V3 e e e v2 LOAD Figure 12 19 Delta 3 Wire 2 PTs 3 CTs e The protective ground connections for the transformers are omitted in the diagrams and are not required for the meter to work properly However we strongly recommend those connections to reduce shock hazard e Shorting switches blocks for the current transformers secondary side are also not shown To prevent electrical shock we recommended you use such shorting switches blocks Make sure the CTs second ary are shorted before disconnecting them from the meter s current input terminals 4 Electro Industries GaugeTech Doc E151701 12 20 The Leader In Power Monitoring and Smart Grid Solutions 12 Switchboard Meter SERVICE DELTA 3WIRE NO PTs 3 CTs ar ee T ee OK cH1 cH2 cH3 cha Gateway GROG SCG e768 FES SE IRIG B _COM1 coma HIGH SPEED ower In Electro Industries 2 1 i GaugeTech www electroind com Caution Power Supply Input on new units is configured differently Please check wiring carefully v1 e e v2 e V3 J LOAD Figure 12 20 Delta 3 wire No PTs 3 CTs e The protective ground connections for the transformers are omitted in the diagrams and are not required for the meter to work properly However we strongly recommend those connections to reduce shock hazard e Shorting switches blocks for the current transformers s
147. ies GaugeTech Doc E151701 6 1 The Leader In Power Monitoring and Smart Grid Solutions 6 Hardware Installation WARNING POWER MUST BE OFF TO INSTALL THE INTERNAL BATTERY AVERTISSEMENT POUR INSTALLER LA BATTERIE DE LA BORNE IL FAUT ETENDRE L ALI MENTATION ELECTRI QUE e To install the Internal Battery remove the Internal Shroud and place the battery into the battery compartment with the facing UP Replace the Internal Shroud See Section 6 2 e To install the Modem Battery with the Outer Shroud on the meter locate the battery cable at the back of the meter and insert the cable connector into the cable Use the velcro peel and stick to attach the battery somewhere outside of the meter See Section 5 4 4 e Measure the enclosure to make sure it accommodates the meter If it is standard size that won t be necessary e Make sure that any communications wiring from the back of the meter is fed through the appropriate openings in your socket to allow for clean connections with external devices e Insert the meter into the socket making sure that the unit blades are firmly within the jaws of the socket e Connect external devices to the appropriate communications wiring See following Figure 6 2 and Table 6 1 Cable Color Key for communications wiring details RJ11 and RJ45 connectors are supplied Electro Industries GaugeTech Doc E151701 The Leader In Power Monitoring and Smart Grid Solutions
148. in the meter are not updated with the real time reading This preserves the billing numbers while testing is performed Ci Electro Industries GaugeTech Doc E151701 4 3 The Leader In Power Monitoring and Smart Grid Solutions 4 Performing Meter Testing 4 2 1 Entering Test Mode To enter Test Mode you must bypass the meter s security system In most instances this requires you to remove power from the meter break the meter seal and remove the Lexan cover and then repower the meter 4 2 2 Using Test Mode The same selected measurement profile quantities data accumulations that are calculated during normal operation are calculated in Test Mode Display quantities Watt hour VAR hour Volt Ampere hour and Block Demand quantities are displayed in units rather than kilo units i e the data is displayed as Wh VAR VAh and Watts rather than kWh kVARh kVAh and kW The same Demand values calculated during normal operation are also calculated in Test Mode The display formats in Test Mode are changed to provide greater resolution during test operations The display does not scroll while in Test Mode Each item remains displayed until the Test Button is pressed which causes the next Test Mode screen to display The following table shows the display screens available in Test Mode the data displayed on each screen and the pulse source for each screen The Leader In Po
149. indicator is located on the lower right side of the face ABC stays illuminated if all three phases of Voltage and current are present ACB indicates reversed phase sequence The indicator blinks A B or C if one phase is not present If no phases are present the meter turns off unless you have an Aux pigtail connected to a power source Cj Electro Industries GaugeTech Doc E151701 The Leader In Power Monitoring and Smart Grid Solutions 3 Operating Instructions 3 3 LCD Display Information The Nexus 1262 1272 meter has a graphical back lit FSTN LCD programmable display with extended temperature Voltage compensation The display lets you view Energy data and gather circuit diagnostic data such as Voltage current harmonics and phasor information You use Communicator EXT software to program the display The display has three View modes to which you assign screens This lets you determine what data is displayed and in what order View mode 1 is the primary mode the other modes automatically return to View mode 1 after a user set amount of inactivity Set the time through Communicator EXT see Section 3 5 instructions for the Miscellaneous tab There is also a Test mode and a Select Compensation screen Mode Details e Access View mode 2 and View mode 3 by swiping the Mode Switch with a magnet see Figure 3 3 Access Test mode by removing the cover POWER MUST BE OFF powering up the meter and pushing the Test Bu
150. ings Follow steps 1 4 above Then press Enter again to reset energy Group 3 Display Baud Rate Address Group 4 Display Communication Protocol Group 5 EIG Use Only Electro Industries GaugeTech Doc E151701 9 14 The Leader In Power Monitoring and Smart Grid Solutions 9 Using the External Displays Group 6 EIG Use Only Group 7 Lamp Test Press Enter to conduct an LED test Group 8 Display Scroll ON OFF Press Enter to turn the scroll feature on or off When the scroll feature is on the P40N external display scrolls through the first reading of each group in the Dynamic Readings mode If a button is pressed during the scroll scrolling pauses for one minute Cj Electro Industries GaugeTech Doc E151701 9 15 The Leader In Power Monitoring and Smart Grid Solutions 9 Using the External Displays 9 8 Navigation Map of Display Features Mode Use Up Down arrows to scroll between groups Reset Max Min Reset Energy Baud Rate Address DECO Communication Protocol Lamp Test Display Scroll On Off 4 Electro Industries GaugeTech Doc E151701 9 16 The Leader In Power Monitoring and Smart Grid Solutions 9 Using the External Displays 9 9 Optional P4ON LED External Remote Display Specifications Specification P40N P41N P43N Displays Maximum Input Voltage 30VDC Minimum Input Voltage 12VDC Maximum Power Consumption 5W Nominal Power Consumption Appro
151. ion Wiring 5 1 5 1 Communication Overview 5 1 5 2 Communicating to the Meter through the ANSI Type II Optical Port 5 2 5 3 RS485 Serial Communication 5 4 5 3 1 RS485 Wiring Fundamentals Port 1 and Port 4 5 4 5 3 2 Using the Unicom 2500 5 6 5 3 3 RJ11 Telephone Line Connection Meter with INP2 Internal Modem with Dial In Dial Out Option 5 8 5 3 4 RJ45 Connection Meter with INP200 10 100BaseT Option 5 8 5 3 5 Modem Ethernet Connection Meter with INP202 Combo Card Option 5 8 5 3 6 RS485 Connection Meter to the P40N P40N P41N P43N LED Display 5 10 5 3 7 Communication Ports on the I O Modules 5 12 5 3 8 RS485 Connection Meter to I O Modules 5 12 5 3 9 Steps to Determine Power Needed 5 15 5 3 10 Remote Communication Over Telephone Lines Using the RS485 Port 5 16 4 Electro Industries GaugeTech Doc E151701 TOC 2 The Leader In Power Monitoring and Smart Grid Solutions Table of Contents 5 3 11 Programming Modems for Remote Communication 5 17 5 3 12 Selected Modem Strings 5 18 5 3 13 High Speed Inputs Connection 5 18 5 3 14 IRIG B Connections 5 19 5 3 15 Time Synchronization Alternatives 5 22 5 4 INP2 Internal Modem with Dial In Dial Out Option 5 23 5 4 1 Hardware Overview 5 23 5 4 2 Hardware Connection 5 23 5 4 3 Dial In Function 5 24 5 4 4 Dial Out Function 5 24 5 5 INP200 Onboard Ethernet 5 26 5 5 1 Hardware Overview 5 26 5 5 2 Hardware Connection 5 27 5 6 INP202 Ethernet
152. ions Settings bad Bit 3 1 Checksum for Programmable Settings bad Bit 4 1 1 or mor Communications Settings are invalid Bit 5 1 1 or more Programmable Settings are invalid Bit 6 1 1 or more Programmable Settings have been modified Bit 7 1 Forced Default by Reset Value Bit 15 1 Normal Operation of the device is disabled 3 Electro Industries GaugeTech Doc E151701 10 15 l The Leader In Power Monitoring and Smart Grid Solutions 10 External 1 0 Modules 10 9 Digital Status Input Module Digital Status Input Module Specifications Model Number 8DI1 Communication RS485 Modbus RTU Programmable Baud Rates 4800 9600 19200 38400 57600 Power Requirement 12 20VDC 50 200mA Operating Temperature 20 to 70 C 4 to 158 F Voltage Rating Up to 300VDC Detection Wet Dry Auto detect Memory 256 Byte I2C EEPROM for storage of programmable settings and non volatile memory Factory Settings Modbus Address 164 Baud Rate 57600 Transmit Delay Time 0 Default Settings Reset Button Modbus Address 247 Baud Rate 57600 Transmit Delay Time 20msec 10 9 1 Overview The Digital Status Input Module is used either for additional status detect or for accu mulating pulses from external equipment such as power meters water meters etc Electro Industries GaugeTech The Leader In Power M
153. ites will increment the Residual for that channel by the dif ference of the old value and the new value The previous value is then replaced with the new value Attempting to write a value greater than the programmed Roll over Value for a given channel is completely ignored and no registers are modified If the difference is greater than half of the programmed Rollover Value for a given channel the write does not increment the Residual but does update the Last Value Overflow of the Residual is not prevented 2 The second process occurs in the main loop and attempts to decrement the Resid ual by the Programmed Energy Pulse Value If the Residual is greater than the Pro grammed Energy Pulse Value and the Pending Pulses Value for that channel has not reached the maximum limit then Residual is decremented appropriately and the Pending Pulses is increased by two signifying two more transitions and one more pulse Cj Electro Industries GaugeTech Doc E151701 10 14 The Leader In Power Monitoring and Smart Grid Solutions 10 External 1 0 Modules 3 The third process runs from a timer which counts off pulse widths from the Pro grammable Minimum Pulse Width Values If there are Pulses Pending for a channel and the delay has passed then the Pulses Pending is decremented for that channel and the Output Relay is toggled Operation Indicator 0000H OK 1000H Problem Bit 1 1 EEPROM Failure Bit 2 1 Checksum for Communicat
154. itiie rath Windows Windows Update lots you set up how windows corrects to Window Update hor dever Dra Sar Wro Update Hardware Prier Hadasa profiles provide a wap toe pou to iet up and sione z resort tisane contigs sons Hardware Proton Coe d Click the Device Manager button You will see a list of the computer s hardware devices Electro Industries GaugeTech Doc E151701 The Leader In Power Monitoring and Smart Grid Solutions 9 Using the External Displays e Click the plus sign next to Ports COM amp LPT The COM ports are displayed Note the COM number for the USB Serial Port This is the number you will use to connect to the P40N through Communicator EXT See the figure below E9 Network adapters p PCMCIA and Flash memory devices BY Ports COM amp LPT i d Communications Port COM7 ff USB Serial Port COM6 R Processors amp SCSI and RAID controllers 2 SM Driver Sound video and game controllers 2 Open Communicator EXT software and click the Connect icon in the Icon bar See the screen shown below i Connect Q Serial Port Network Device Address Baud Rate 9600 Available Ports All Ports Port COMB Protocol Modbus RTU Flow Control Echo Mode 3 Click the Serial Port button if it s not already selected 4 Set the Baud Rate to 9600 It uses 9600 because it shares an existing Com port for displayed readings 5 Click the Available
155. ker Data available e Pst Pst Max Pst Min values for long term recording e Plt Plt Max Plt Min values for long term recording Simulation Of Eye Brain Response Block 1 Block 2 Block 3 Block 4 Block 5 Voltage Detector High Pass A D and Gain Filter Converter Minimum 4 tout Control DC 1st Sampling 64 level Feed nal Square Removal Weighting Squaring Oder Rate Classifier Law Filter Multiplier Sliding p02 Demodulator Low Mean Pass Filter Filter Input Carrier Voltage Removal Adaptor Programming of short and long observation periods Output Recording Output and Data Display Instantaneous Flicker in Pst Max Min Pst Perceptibility Units Pit Max Min Plt Pinst Figure 14 1 Simulation of Eye Brain Response 14 3 Flicker Setup You must set up several parameters to properly configure Flicker 1 Select the Profile icon from Communicator EXT s Icon bar 2 From the Device Profile screen double click Power Quality and Alarm Settings gt EN50160 IEC61000 4 30 Flicker You will see the screen shown below EN50160 7 IEC 61000 4 30 Flicker Frequency 60 Hz Short term test time PST ho Minutes Long term test time PLT 240 Minutes EE EI KE 3 Electro Industries GaugeTech Doc E151701 14 4 The Leader In Power Monitoring and Smart Grid Solutions 14 EN50160 IEC61000 4 15 Flicker e Select the Frequency of
156. ks for the current transformers secondary side are also not shown To prevent electrical shock we recommended you use such shorting switches blocks Make sure the CTs second ary are shorted before disconnecting them from the meter s current input terminals 3 Electro Industries GaugeTech Doc E151701 1 93 l The Leader In Power Monitoring and Smart Grid Solutions 11 Electrical Installation 11 3 9S Meter Mounted in S A Adapter Any of the 9S Forms can be mounted in an S A Adapter such as the one shown below The socket meter is pushed into the S A Adapter until the meter snaps into place The blades on the back of the socket meter make the proper connection See Figures 11 1 to 11 8 for the 9S wiring diagrams la Va lb Vb Ic High High Figure 11 19 Form 9S mounted in an S A Adapter front removed 3 Electro Industries GaugeTech Doc E151701 11 24 l The Leader In Power Monitoring and Smart Grid Solutions 12 Switchboard Meter 12 Switchboard Meter 12 1 Introduction ww sez Gz 6 s a 6 85 174 mm E Figure 12 1 Switchboard Meter Dimensions Front This chapter gives you a brief overview of the Nexus 1262 1272 Switchboard option The Switchboard meter gives you all the features of the Socket meter in a compact case Easy installation or disconnection is the primary benefit of choosing this option The Switchboard system lets you install or rack out the meter
157. link multiple devices in a series connect shield to RS485 Master and individual devices as shown in Figure 5 5 You may also connect the shield to earth ground at one point e The Nexus 1262 1272 meter may be shipped with connectors on the ends of cables or they may be shipped as pigtails no connectors In this case a generic terminal block is shipped with the meter The terminal block has up to 12 connec tors and can be cut into smaller sections with a utility knife Please refer to the Cable Color Key on pages 6 5 to 6 7 if you are using pigtails or if you have any question about which connector is which e Termination Resistors RT are generally used on both ends of longer length trans mission lines The value of the Termination Resistors is determined by the electrical parameters of the cable Termination Resistors are only needed with runs typically more than 500 feet as the meter has some level of termination internally and usu ally resistors are not needed e For information on connecting the meter to a modem see Section 5 3 11 Figure 5 5 shows a representation of an RS485 Daisy Chain connection You can connect up to 31 slaves in a Daisy Chain Master device Last Slave device N Slave device 1 Slave device 2 SH TTL 2 Twisted pair shielded SH cable Twisted pair shielded SH cable Twisted pair shielded SH cable Earth Connection preferably at single location Figure 5 5 RS485 Daisy
158. llows At 12 10 we have the average of the subintervals from 11 55 12 00 12 00 12 05 and 12 05 12 10 In five minutes 12 15 we will have an average of the subinter vals 12 00 12 05 and 12 05 12 10 which we know and 12 10 12 15 which we do not yet know As a guess we will use the last subinterval 12 05 12 10 as an approximation for the next subinterval 12 10 12 15 As a further refinement we will assume that the next subinterval might have a higher average 120 than the last subinterval As we progress into the subinterval for example up to 12 11 the Predictive Window Demand will be the average of the first two subintervals 12 00 12 05 12 05 12 10 the actual values of the current subinterval 12 10 12 11 and 4 Electro Industries GaugeTech Doc E151701 138 The Leader In Power Monitoring and Smart Grid Solutions 13 Meter Calculations the prediction for the remainder of the subinterval 4 5 of the 120 of the 12 05 12 10 subinterval of Subintervals n Subinterval Length Len Partial Subinterval Length Cnt Prediction Factor Pct Sub Sub Sub Partial Predict Len Len Len Cnt Len Len 1 gt Value Sub Len Cnt 1l gt Value Partial nt va Partial x bna x ra n Len 5 Electro Industries GaugeTech The Leader In Power Monitoring and Smart Grid Solutions Doc 151701 13 Meter Calculations gt
159. lts Note This Data must be entered on Transformer Loss Sheet before completing Line Loss Calculation Legend Notes Information Only ESS Required Data 5 Cakutated Value e Data from other Sheet CEE Enter this Data Publishing and duplicating rights are property of Electro Industries Gauge Tech Comments This spreadsheet is designed only to be used with EIG Nexus based metering equipment 4 Electro Industries GaugeTech Doc E151701 A 4 The Leader In Power Monitoring and Smart Grid Solutions A TLC Spreadsheet and Examples Electro Industries GaugeTech 1800 Shames Drive Westbury NY 11590 877 EIMETER 877 346 3837 Substation Losses EIG Lass Compensation Calculator Three Element Meter with 3 PT s and 3 CT s Note Leave Data Entry Celis Blank if not including Line Losses SINT Bank No _ Substation Information Example of Loss Calculation that includes Transformer Substation and m EE o o o Total per Element t Unit Total Conductor Lengt tt nt LE Secondary Current Rating Ir 2220843 Conductor Loss Watts PCL 0000 0000 kw Conductor Loss VArs pL 00 0000 Legend Information Only Required Data Calaslated Value inductive Reactance D k 000 Data from other Sheet Length of Conductor 000 Entes this Data Length Unit 1 U FT Comments Note This Data must be entered on Transformer Loss Sheet before co Substation Loss Calculation Transformer Da
160. mbined all the I O modules and power supplies together for the group fasten tightly This final tightening will lock the whole group together as a unit 8 Attach the right Mounting Bracket to the right side of the group using the small Phillips head screws provided 9 Mount the group of modules on a secure flat surface This procedure will insure that all modules stay connected securely Cj Electro Industries GaugeTech Doc E151701 10 5 l The Leader In Power Monitoring and Smart Grid Solutions 10 External 1 0 Modules 10 4 Factory Settings and Reset Button Factory Settings All Nexus I O Modules are shipped with a preset address and a baud rate of 57600 See following sections for I O Module addresses Reset Button If there is a communication problem or if you are unsure of a module s address and baud rate press and hold the RESET button for 3 seconds the module will reset to a default address of 247 at 57600 baud rate for 30 seconds This enables you to interrogate the I O using the Communicator EXT software see the Modbus Communicating 1 0 Modules User Manual Electro Industries GaugeTech Doc E151701 The Leader In Power Monitoring and Smart Grid Solutions 10 6 10 External 1 0 Modules 10 5 Analog Transducer Signal Output Modules Analog Transducer Signal Output Module Specifications Model Numbers 1mAON4 4 channel analog output 0 1mA 1mAON8 8 channel an
161. ms Instantaneous Short Term or Long Term e Instantaneous Flicker Evaluation An output of 1 00 from Block 4 corresponds to the Reference Human Flicker Perceptibility Threshold for 50 of the population This value is measured in Perceptibility Units PU and is labeled Pinst This is a real time value and it is continuously updated e Short Term Flicker Evaluation An output of 1 00 from Block 5 corresponding to the Pst value corresponds to the conventional threshold of irritability per IEC 1000 3 3 In order to evaluate flicker severity two parameters have been defined one for the short term called Pst defined in this section and one for the long term called PIt defined in the next section The standard measurement time for Pst is 10 minutes Pst is derived from the time at level statistics obtained from the level classifier in Block 5 of the flicker meter The following formula is used P 0 0314P 0 0525F 0 0657P 70 287 0 08 Pios Where the percentiles P 0 1 P 1 P 3 P 10 P 50 are the flicker levels exceeded for 0 1 1 2 20 and 50 of the time during the observation period The suffix S in the formula indicates that the smoothed value should be used The smoothed values are obtained using the following formulas P 1s P 7 P 1 P 1 5 3 P 3s P 2 2 P 3 P 4 3 P 10s P 6 P 8 P 10 P 13 P 17 5 P 50s P 30 P 50 P 80 3 4 Electro Industries GaugeTec
162. n Calculator Meter Correction Factors from this sheet are manually entered into EIG Communicator Software Meter Correction Factors for Communicator Software Calc Used F5 No Load Loss Watts LWFE 2 16780 Enter These Ps Full Load Loss Watts iwcu 00247 P No Load Loss VARs LVFE 58 45983 0 Full Load Loss VARs LVCU 0 35639 Losses Shifted to IT Prime Lwe Core Loss Watts 7504353277 w tveU VA Rated Loss due to Ou 1283 3849 Ka Total System Losses total losses Note If no data entered in Line or Substation Loss sheets contribution to total is zero Type Source KWatts Loss ___KVArLosses EE _ 9 SS Fe Ee Load Losses Transformer Windings FLW 5603 FLV 80798 Transmission Line LEW 000 ELV OD __ Substation Conductors ctw 000 CLV TO L TotalLoad Losses TLW 5603 Ttv 80798 a e E 3 vv ___KVArLosses pios cec Losses Losses T Hensonner Core S Coad Losses Transformer Windings FLW RE Transmission Une mn Substation Conductors CLW Total Load Losses TLW__ Information Only The Leader In Power Monitoring and Smart Grid Solutions Required Data Calculated Value Publishing and duplicating rights are property of Electro Data from other Sheet Industries GaugeTech This spreadsheet is designed only to be used with Enter this Data EIG Nexus based metering equipment Comments Electro Industries GaugeTech Doc E1
163. n retrievals in the form of a time stamp Refer to the Communicator EXT User Manual HHF Converter instructions for more MV 90 details 5 4 INP2 Internal Modem with Dial In Dial Out Option The INP2 Internal Modem option gives the Nexus 1262 1272 meter RJ11 connection as well as Dial In Dial Out remote communication 5 4 1 Hardware Overview The INP2 Option for the Nexus 1262 1272 meter provides a direct connection to a standard telephone line No additional hardware is required to establish a communica tion connection between the meter and a remote computer The modem operates at up to 56k baud The internal connection between the modem and the meter includes a memory buffer This enables the modem to connect to the phone line at any speed and to change speed during the communication connection to the remote PC The buffer between the meter and the modem allows the meter to communicate into the modem at a constant speed while the modem telephone line speed can vary This eliminates the synchronizing problems that are common with other devices It also increases the effective throughput of the communication channel This in turn decreases connection time and connection costs The modem supports both incoming calls from a remote computer and automatic dial out calls when a defined event must be automatically reported 5 4 2 Hardware Connection When the INP2 Option is ordered there are two RJ11 jacks that pigtail from t
164. n the diagrams and are not required for the meter to work properly However we strongly recommend those connections to reduce shock hazard e Shorting switches blocks for the current transformers secondary side are also not shown To prevent electrical shock we recommended you use such shorting switches blocks Make sure the CTs second ary are shorted before disconnecting them from the meter s current input terminals Ci Electro Industries GaugeTech Doc E151701 11 18 The Leader In Power Monitoring and Smart Grid Solutions 11 Electrical Installation FORM 45S TRANSFORMER RATED SERVICE WYE 4WIRE 3 2 PTs 3 CTs LINE 4 V3 V2 V1 N LOAD Figure 11 14 Form 45S Wye 2 PTs 3 CTs e The protective ground connections for the transformers are omitted in the diagrams and are not required for the meter to work properly However we strongly recommend those connections to reduce shock hazard e Shorting switches blocks for the current transformers secondary side are also not shown To prevent electrical shock we recommended you use such shorting switches blocks Make sure the CTs second ary are shorted before disconnecting them from the meter s current input terminals Cj Electro Industries GaugeTech Doc E151701 11 19 The Leader In Power Monitoring and Smart Grid Solutions 11 Electrical Installation FORM 45S TRANSFORMER RATED SERVICE DEL
165. nal Communications e INP2 56k Modem with dial out capabilities e INP200 Internal 10 100BaseT Ethernet with Total Web Solutions e INP202 Ethernet INP200 Modem INP2 Combo card e Modbus TCP and DNP LAN WAN Internal 8 Channel Digital Inputs e Type Self excited for dry contacts only e Wetting Voltage 12Vdc typical Internal 4 Channel KYZ Outputs e Type Form C contacts pulse or transition based counts e On Resistance 23 350 e Peak Voltage 350Vdc 3 Electro Industries GaugeTech The Leader In Power Monitoring and Smart Grid Solutions Doc 151701 2 12 2 Meter Overview e Continuous Load Current 120mA e Peak Load Current 350mA 10ms Off State Leakage Current 350Vdc 1 uA e Opto Isolation 3750V rms 60 Hz 1 min Clock Timing e IRIG B input for synchronizing to external GPS clock signal accuracy better than imsec per month e Line Frequency Clock Synchronization accuracy better than 1 second per month e Internal Clock Crystal accuracy better than 2 minutes per month Environmental Temperature Specifications to Indirect Light e Operating Temperature 40 to 85 C e Display Operating Temperature 20 to 60 C e Humidity 95 non condensing e Storage Temperature 40 to 85 C e Raintight Lexan Cover Socket meter NOTE At temperatures above 60 C the display may turn black The display should return to normal once the temperature has cooled If the meter is exhibiting a h
166. nd Sag A Voltage quality event during which the RMS Voltage is lower than normal for a period of time typically from 1 2 cycle to 1 minute 3 Electro Industries GaugeTech The Leader In Power Monitoring and Smart Grid Solutions Doc E154701 GL 9 Glossary Secondary Rated Serial Port Swell TDD THD Time Stamp Any Register or pulse output that does not use any CT or PT VT Ratio The type of port used to directly interface with a device using the RS232 standard A Voltage quality event during which the RMS Voltage is higher than normal for a period of time typically from 1 2 cycle to 1 minute The Total Demand Distortion of the current waveform The ratio of the root sum square value of the harmonic current to the maximum demand load current See equation below NOTE The TDD displayed in the Harmonics screen is calculated by Communicator EXT software using the Max Average Demand pp P LELESE 00 I L Total Harmonic Distortion is the combined effect of all harmonics measured in a Voltage or current The THD number is expressed as a percent of the fundamental For example a 3 THD indicates that the magnitude of all harmonic distortion measured equals 3 of the magnitude of the fundamental 60Hz quantity The THD displayed is calculated by your Nexus meter A stored representation of the time of an event Time Stamp can include year month day hour minute second a
167. nd lines RT is approximately 120 Ohms Cj Electro Industries GaugeTech Doc E151701 5 10 The Leader In Power Monitoring and Smart Grid Solutions 5 Serial Communication Wiring NOTE The P40N and legacy P40N connect the same way through the port on the back of the display The only difference is in the port labeling External Power Source PB1 or other P40N LED Display Back View 6 20 f Ew Rr See Ry Note on page 5 5 lt lt 6 6 6 S B A of z Please refer to Cable Color P40N LED Display Back View Key page 6 4 S and second bullet page 5 5 1262 1272 Port 4 Figure 5 8 P41N and Legacy P40N External Display RS485 Connection 4 Electro Industries GaugeTech Doc E151701 5 11 The Leader In Power Monitoring and Smart Grid Solutions 5 Serial Communication Wiring 5 3 7 Communication Ports on the I O Modules Female RS485 Side Port I O Port Size and Pin Configuration Vary Male RS485 Side Port Figure 5 9 I O Module Communication Ports Female RS485 Side Port use to connect to another module s male RS485 side port Male RS485 Side Port use to connect to the meter s Port 4 see following section or to connect to another module s female RS485 side port see Section 10 3 1 I O Port use for functions specific to the type of m
168. nd Daylight Savings Time indication 4 Electro Industries GaugeTech The Leader In Power Monitoring and Smart Grid Solutions Doc E154701 GL 10 Glossary TOU Uncompensated Power V2T Threshold Voltage Imbalance Voltage Quality Event VT Ratio Voltage Vab Voltage Van Time of Use VA Watt and VAR readings not adjusted by Transformer Loss Compensation Data will stop accumulating when Voltage falls below programmed level The ratio of the Voltage on a phase to the average Voltage on all phases An instance of abnormal Voltage on a phase The events the meter tracks include sags swells interruptions and imbalances The Voltage Transformer Ratio is used to scale the value of the Voltage to the primary side of an instrument transformer Also referred to as PT Ratio Vab Vbc Vca are all Phase to Phase Voltage measurements These Voltages are measured between the three phase Voltage inputs to the meter Van Vbn Vcn are all Phase to Neutral Voltages applied to the monitor These Voltages are measured between the phase Voltage inputs and Vn input to the meter Technologically these Voltages can be measured even when the meter is in a Delta configuration and there is no connec tion to the Vn input However in this configu ration these Voltages have limited meaning and are typically not reported Electro Industries GaugeTech The Leader In Power Monito
169. ndary Primary Energy Quadrants KYZ Output Accumulatars Internal Input Accumulators Secondary Energy Quadrants Primary Energy Secondary Energy Accumulator Current Value New Value Preset Watt Hour Quadrant 1 4 oo00000000000000 E Watt Hour Quadrant 2 3 fo000000000000000 VAR Hour Quadrants 1 2 0000007634409893 0000007634409893 r r VAR Hour Quadrants 3 4 0000000000000502 0000000000000502 B Vanton Gun 1220 PETES ones Fr 2 Click Tabs at the top of the screens to access the individual screens e Each screen has a Current Value New Value and Preset Box for each accumula tor e A new meter has zeros for Current Values 3 Settings can be preset for the following sets of values e Primary Energy e Secondary Energy e Primary Energy Quadrants e Secondary Energy Quadrants e Internal Input Accumulators e KYZ Output Accumulators 3 Electro Industries GaugeTech Doc E151701 l The Leader In Power Monitoring and Smart Grid Solutions 4 Performing Meter Testing e Q Hours e I amp V Squared T Accumulators e Cumulative Demand Secondary e Uncompensated Energy Examples of some of the screens are shown below 4 Click the Preset Boxes for the values you want to set 5 Click Set to save your entries or Cancel to exit the screen without saving any changes Test Mode Preset 18 V Squared T Accumulators Cumulative Demand Secondary Primary Energy Quadrants KYZ Output Accumulators Intern
170. nditions the meter automatically downloads the log s that are nearing the full state The modem can be programmed to call two different numbers to make the required reports Primary and Backup The modem can be programmed with an ASCII string for identification purposes If this string in present the modem plays the string to the host computer upon connection to identify the meter to the host software Refer to the Communicator EXT User Manual for programming details The modem includes a connection for an external 3V Lithium Battery with custom leads and velcro mounting to power the modem if the meter loses control power Using the battery the modem is able to complete a reporting call even if power to the meter has been disconnected This feature allows the meter to report power outage conditions Under normal conditions the battery should provide in excess of 10 years of service during storage conditions disconnected from terminals or when properly installed in an energized meter The battery should provide more than one year of service during outage conditions on battery backup A LOW BATTERY indicator appears on the display screen when battery power is low Call the factory for a replacement battery Replacement of the battery is simple When ordered the battery is attached to a cable which pigtails from the back of the meter with a connector see following NOTE Figure 6 2 and Table 6 1 Installation steps 1 Remove the
171. ned by lagging the applied Voltage to a wattmeter by 60 degrees Values are displayed on the Uncompensated Power and Q Readings screen Electro Industries GaugeTech The Leader In Power Monitoring and Smart Grid Solutions Doc E154701 GL 7 Glossary Quadrant Programmable Values and Factors on the Nexus meter Register Register Rollover Reset Rolling Window Average Power Watt and VAR flow is typically represented using an X Y coordinate system The four corners of the X Y plane are referred to as quadrants Most power applications label the right hand corner as the first quadrant and number the remaining quadrants in a counter clockwise rotation Follow ing are the positions of the quadrants ist upper right 2nd upper left 3rd lower left and 4th lower right Power flow is generally positive in quadrants 1 and 4 VAR flow is positive in quadrants 1 and 2 The most common load conditions are Quadrant 1 power flow positive VAR flow positive inductive load lagging or positive power factor Quadrant 2 power flow negative VAR flow positive capacitive load leading or negative power factor An entry or record that stores a small amount of data A point at which a Register reaches its maximum value and rolls over to zero Logs are cleared or new or default values are sent to counters or timers The Rolling Sliding Window Average is the average power calcul
172. ng and Smart Grid Solutions 11 Electrical Installation EIG recommends the use of Fuses for voltage leads and power supply and shorting blocks to prevent hazardous voltage conditions or damage to CTs if the meter needs to be removed from service One side of the CT must be grounded NOTE The current inputs are only to be connected to external current transformers provided by the installer The CTs shall be Approved or Certified and rated for the current of the meter used NOTE IF THE EQUIPMENT IS USED IN A MANNER NOT SPECIFIED BY THE MANUFACTURER THE PROTECTION PROVIDED BY THE EQUIPMENT MAY BE IMPAIRED NOTE THERE IS NO REQUIRED PREVENTIVE MAINTENANCE OR INSPECTION NECESSARY FOR SAFETY HOWEVER ANY REPAIR OR MAINTENANCE SHOULD BE PERFORMED BY THE FACTORY DISCONNECT DEVICE The following part is considered the equipment disconnect device A SWITCH OR CIRCUIT BREAKER SHALL BE INCLUDED IN THE END USE EQUIPMENT OR BUILDING INSTALLATION THE SWITCH SHALL BE IN CLOSE PROXIMITY TO THE EQUIPMENT AND WITHIN EASY REACH OF THE OPERATOR THE SWITCH SHALL BE MARKED AS THE DISCONNECTING DEVICE FOR THE EQUIPMENT L installation des compteurs de Nexus 1262 1272 doit tre effectu e seulement par un personnel qualifi qui suit les normes relatives aux pr cautions de s curit pendant toute la proc dure Le personnel doit avoir la formation appropri e et l exp rience avec les appareils de haute tension Des gants de s curit des
173. o for one phase and will be full phase to phase voltage for the other two phases This is done for protective purposes 3 Electro Industries GaugeTech The Leader In Power Monitoring and Smart Grid Solutions Doc 151701 1 4 1 Three Phase Power Measurement Vas Figure 1 4 Phasor Diagram Three Phase Voltages and Currents Delta Connected Another common delta connection is the four wire grounded delta used for lighting loads In this connection the center point of one winding is grounded On a 120 240 volt four wire grounded delta service the phase to ground voltage would be 120 volts on two phases and 208 volts on the third phase Figure 1 5 shows the phasor diagram for the voltages in a three phase four wire delta system Ve Vca Vec N Va Vas Ve Figure 1 5 Phasor Diagram Showing Three phase Four Wire Delta Connected System 3 Electro Industries GaugeTech The Leader In Power Monitoring and Smart Grid Solutions Doc 151701 1 5 1 Three Phase Power Measurement 1 1 3 Blondell s Theorem and Three Phase Measurement In 1893 an engineer and mathematician named Andre E Blondell set forth the first scientific basis for polyphase metering His theorem states If energy is supplied to any system of conductors through N wires the total power in the system is given by the algebraic sum of the readings of N wattmeters so arranged that each of the N wires contains one current coil the corresponding potenti
174. o keep meter time The Line Frequency Clock Synchronization feature may be enabled or disabled If it is not enabled the internal clock crystal provides time synchronization All readings and logs are time stamped to the nearest millisecond 3 Electro Industries GaugeTech The Leader In Power Monitoring and Smart Grid Solutions Doc E151701 2 2 2 Meter Overview Eight status channels provide input of status or pulse signals Status inputs are date time stamped to the nearest millisecond and placed in the event log Pulse inputs are multiplied by a user supplied factor and accumulated in reading registers These accumulated values can also be totalized This feature makes the Nexus 1262 1272 meter a good fit in universal metering applications Additionally any one input channel can be selected to accept an End of Interval pulse from another meter Meter set up parameters and all historical log data are stored in nonvolatile RAM The user has multiple log functionality Data is made available through the onboard display Display screens are described in Chapter 3 Several additional communication channels operate simultaneously including the optional Ethernet Modem Combo Card External systems can be connected to either of the RS485 ports or the Ether net Modem port Stored data can be downloaded through the RS485 ports the Ether net Modem port or the Optical port Electro Industries GaugeTech The Leader In Power Monit
175. odule size and pin configuration varies depending on type of module For more detail refer to Chapter 10 5 3 8 RS485 Connection Meter to I O Modules An RS485 cable harness is supplied with the purchase of MBIO mounting brackets Wire one end of the cable to the meter s Port 4 Insert the other end of the cable into the communication pins of the I O module s male RS485 side port see Figure 5 9 See Section 10 3 1 for details on using multiple I O modules The Nexus 1262 1272 meter s power supply does not supply power to the I O modules You must use a power source such as the EIG PSIO or PB1 12V See Section 10 2 1 for PSIO details 4 Electro Industries GaugeTech Doc E151701 5 12 The Leader In Power Monitoring and Smart Grid Solutions 5 Serial Communication Wiring RS485 communication is viable for up to 4000 feet 1219 meters Follow the wiring shown in Figure 5 10 and be sure to 1 Connect the and terminals on the meter to the and terminals of the female RS485 port Connect the shield to the shield S terminal The S terminal on the meter is used to reference the meter s port to the same potential as the source It is not an earth ground connection You may also connect the shield to earth ground at one point 2 Provide termination resistors at each end for longer runs typically more than 500 connected to the and lines RT is approximately 120 Ohms NOTES e The met
176. of billing and historical log quantities does either of the following e Resumes from the values in place when Test Mode was entered e Continues from the Test Mode Preset values see Section 4 2 4 Electro Industries GaugeTech Doc E151701 The Leader In Power Monitoring and Smart Grid Solutions 4 Performing Meter Testing This page intentionally left blank 5 Electro Industries GaugeTech Doc E151701 4 10 l The Leader In Power Monitoring and Smart Grid Solutions 5 Serial Communication Wiring 5 Serial Communication Wiring 5 1 Communication Overview The figure below shows serial communication options Optical Port to RS232 Communication Interface e g A7Z Meter TN O IP tical Port RS232 Rs Oe E ee cca p 50 Feet i Meter 6 RS485 232 Converter Unicom 2500 Telephone Line Fiber Optic Link or Radio Link RS485 232 Converter Modem Manager Figure 5 1 Serial Communication RS232 communication is used to connect a single Nexus 1262 1272 meter with another device such as a computer RTU or PLC The link is viable for up to 50 feet 15 2 m and is available only through the meter s Optical port with a communication interface Optical port to RS232 converter see figures 5 2 and 5 3 RS485 communication allows multiple meters to communicate with another device at a local or remote site The I O modules and external displays use RS485 to c
177. ollowing to connect multiple external I O Modules for enhanced I O capability e Analog Outputs e Analog Inputs e Additional Status Inputs e KYZ Outputs e Relay Alarm Outputs Control Options ElectroLogic Relay Control provides user definable control outputs e Action and or alarm on abnormal condition e Action on Boolean logic combinations of Inputs or electrical conditions 3 Electro Industries GaugeTech The Leader In Power Monitoring and Smart Grid Solutions Doc E151701 2 7 2 Meter Overview 2 3 3 Display Screens The Nexus 1262 1272 meter features a built in graphical back lit FSTN LCD display with extended temperature Voltage compensation This allows you to view energy data and to gather circuit diagnostic data such as Voltage current harmonics and phasor information The display is easily programmable See Chapter 3 for details on the Programmable Display 2 3 4 Additional Switches The Nexus 1262 1272 meter has additional switches amp signals that help in using the unit see Section 3 2 for more information e The Infrared Test Pulse can be set to pulse for Watt hour Watt hour VAR hour VAR hour and VA hour The pulse uses time modulation which allows the pulse to be accurate during short duration pulse tests The pulse integration uses industry accepted reference standards e The Mode Switch magnetic reed switch uses a magnet to switch operating modes e The Test button is used to
178. oma HIGH SPEED 1 Electro Industries i GaugeTech www electroind com 2 Caution Power Supply Input on new units is configured differently Please check wiring carefully Ib Hi lc Hi v1 o v2 e J e V3 o e e N LOAD Figure 12 10 9Z Transformer Rated Wye 3 PTs 3 CTs e The protective ground connections for the transformers are omitted in the diagrams and are not required for the meter to work properly However we strongly recommend those connections to reduce shock hazard e Shorting switches blocks for the current transformers secondary side are also not shown To prevent electrical shock we recommended you use such shorting switches blocks Make sure the CTs second ary are shorted before disconnecting them from the meter s current input terminals Electro Industries GaugeTech Doc E151701 12 11 The Leader In Power Monitoring and Smart Grid Solutions 12 Switchboard Meter SERVICE DELTA 4WIRE NO PTs 3 CTs VOR OK one SE cH1 cH2 cH3 cHa Gateway VTS OC SOG 67 6 54 3 21 ic B com1 coma HIGH SPEED ower In Electro Industries 2 1 i GaugeTech o www electroind com Caution Power Supply Input on new units is configured differently Please check wiring carefully Vc la Hi Ib Hi lc Hi v1 a v2 e V3 o N e LOAD Figure 12 11 9Z Transformer Rated 4 Wire Delta
179. ommuni cate with the meter All RS485 links are viable for up to 4000 feet 1220 m The Nexus Socket meter s Ports 1 and 4 are two wire RS485 connections up to 115200 baud Optional Communication Connections for INP2 Internal Modem with Dial In Dial Out INP200 10 100BaseT connection or INP202 Combination Modem and Ethernet are cables with appropriate connectors see Chapter 6 and Figure 6 2 4 Electro Industries GaugeTech Doc E151701 5 1 The Leader In Power Monitoring and Smart Grid Solutions 5 Serial Communication Wiring Optical Port Figure 5 2 Optical Port Location 5 2 Communicating to the Meter through the ANSI Type II Optical Port The Optical port allows the Nexus 1262 1272 meter to communicate with one other device e g a PC Located on the left side of the meter s face it provides communica tion with the meter through an ANSI C12 13 Type II Magnetic Optical Communi cations Coupler such as either e An A7Z Communication Interface connected to the RS232 port of the PC e An A9U Communication Interface connected to the USB port of the PC You can order the A7Z or A9U from EIGS webstore www electroind com store Select the Communications Products category from the left side of the webpage See Figure 5 3 3 Electro Industries GaugeTech Doc 151701 DSJ The Leader In Power Monitoring and Smart Grid Solutions 5 Serial Communication Wiring Figure 5 3 A7Z Top and A
180. onitoring and Smart Grid Solutions Doc E151701 10 16 10 External 1 0 Modules 10 9 2 Communication Maximum registers per request read or write is 4 registers The device will operate with the following Default Mode Parameters See Section 10 4 for details Address 247 F7H Baud Rate 57600 Baud Transmit Delay Time 20 msec 10 9 3 Normal Mode The device polls the inputs at 100Hz once every 10 msec debouncing the inputs and incrementing the Transition Accumulators for each channel as appropriate The inputs are represented by Channel 1 in the LSB through Channel 8 in the MSB of the low order byte of the register The Modbus Map for the Digital Status Input Modules and operating details can be found in the Modbus Communicating 1 0 Modules Manual Electro Industries GaugeTech Doc E151701 The Leader In Power Monitoring and Smart Grid Solutions 10 17 10 External 1 0 Modules This page intentionally left blank 5 Electro Industries GaugeTech Doc E151701 10 18 l The Leader In Power Monitoring and Smart Grid Solutions 11 Electrical Installation 11 Electrical Installation The Nexus 1262 1272 Socket meter supported forms and their wiring configura tions are shown in this chapter The forms are based on the rated Voltage and hookup required for your application Custom forms and configurations are also available from EIG 11 1 Considerations When Installing Me
181. ons you MUST use Cable 5 For more information on the meter with the INP2 Option see Section 5 4 5 3 4 RJ45 Connection Meter with INP200 10 100BaseT Option The INP200 Option conforms to the IEEE 802 3 10 100BaseT specification using unshielded twisted pair UTP wiring This allows you to use inexpensive RJ45 connectors and CAT 3 or better cabling The RJ45 connector is supplied with the meter Cable 6 Using this LAN connection allows multiple PC s to access the meter concurrently The RJ45 line is inserted into the RJ45 connector on Cable 6 coming from the bottom of a meter with the Ethernet Option The connection using RJ45 into the meter connects the meter to a network using Modbus TCP protocol over Ethernet For more information on a meter with the INP200 Onboard Ethernet 10 100BaseT see Section 5 5 5 3 5 Modem Ethernet Connection Meter with INP202 Combo Card Option The INP202 is an extension of INP200 It has all the features of INP200 plus a built in Modem Modem and Ethernet capabilities can be used simultaneously The communication protocol supported by the modem is Modbus ASCII The Communication protocol supported by the RS485 Ethernet Modem Gateway is Modbus RTU INP202 converts all incoming modem Modbus ASCII requests to Modbus RTU for internal and gateway communication It then converts all response Modbus RTU messages into Modbus ASCII protocol before it sends the responses to the modem Some of the
182. oring and Smart Grid Solutions Doc E151701 2 Meter Overview 2 3 Advanced Measurement Functionality 2 3 1 Advanced Revenue Billing Capability The Nexus 1262 1272 device is a full four quadrant power and energy meter with accuracy of within 0 06 of reading at full load unity PF Energy measurements include kWh Delivered amp Received kKVARh Delivered amp Received kVAh KVARR kWh in each quadrant and Total kVAh The meter measures instantaneous power and provides multiple simultaneous demand measurements including time stamped maximum and minimum readings Time of Use The Nexus meter s Time of Use functionality offers the following standard capabilities e 8 TOU schedules e Bidirectional consumption and Demand e 4 seasons year e 20 year calendar e Prior month and prior season readings for each schedule e Present month and present season readings for each schedule e Prior season may also be adjusted for a programmable freeze period e Total to date readings for each month e Total to date readings for each season e Cumulative and continuous cumulative Demand Load Aggregation Universal Metering Using standard pulse inputs the Nexus 1262 1272 meter can count pulses from external meters and accumulate usage The pulse inputs can be used to totalize electrical usage and utility values such as water or gas use data Readings include e 8 pulse inputs 3 Electro Industries GaugeTech The Leader
183. ower Monitoring and Smart Grid Solutions Doc E151701 7 Time of Use Function This page intentionally left blank Electro Industries GaugeTech The Leader In Power Monitoring and Smart Grid Solutions Doc E151701 8 Transformer Loss Compensation 8 Transformer Line Loss Compensation 8 1 Introduction The Edison Electric Institute s Handbook for Electricity Metering Ninth Edition defines Loss Compensation as A means for correcting the reading of a meter when the metering point and point of service are physically separated resulting in measurable losses including I2R losses in conductors and transformers and iron core losses These losses may be added to or subtracted from the meter registration Loss compensation may be used in any instance where the physical location of the meter does not match the electrical location where change of ownership occurs Most often this appears when meters are connected on the low Voltage side of power trans formers when the actual ownership change occurs on the high side of the trans former This condition is illustrated in Figure 8 1 Ownership Change Figure 8 1 Low Voltage Metering Installation Requiring Loss Compensation It is generally less expensive to install metering equipment on the low Voltage side of a transformer and in some conditions other limitations may also impose the require ment of low side metering even though the actual ownership change occurs
184. pointing LEFT indicates negative power flow Below is a list of available screens with some example figures Screen Number 11 12 13 14 15 16 Screen Name Wh Delivered Wh Received VARh VARh VAh Rolling W Demand Del Rolling W Demand Rec Block W Demand Del Block W Demand Rec W Demand Last Reset Phase to Neutral Voltage kWh DEL 43089263 REC 71323159 06 16 2011 3 50 44 Norm ABC ROLLING W DEMAND DEL 502 3 3 07 2003 2 07 09 06 16 2011 3 50 44 Norm ABC Electro Industries GaugeTech The Leader In Power Monitoring and Smart Grid Solutions Doc E151701 3 Operating Instructions 17 Phase Current 18 Phasors 20 VAR PF Frequency 21 Va Vab Harmonics 22 Vb Vbc Harmonics 23 Vc Vca Harmonics 24 Ia Harmonics la E 25 Ib Harmonics Jin 005 67 56 ru 06 18 2011 12 22 44 CDM ABC 45 Totalizer 1 46 Totalizer 2 47 Totalizer 3 48 Totalizer 4 49 Totalizer 1 Demand 50 Totalizer 2 Demand 51 Totalizer 3 Demand 52 Totalizer 4 Demand 53 Cumulative Demand Del amp Rec 54 Phase to Phase Voltage VA L E es 55 W C 17 01 LG ABC 56 VAR 57 PF 58 VA 3 Electro Industries GaugeTech Doc 151701 3 31 The Leader In Power Monitoring and Smart Grid Solutions 3 Operating Instructions 59 60 61 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 Frequency Segment Check Q Meter Name Optical Po
185. pped Register stores no information and is said to be invalid ITIC Curve An updated version of the CBEMA Curve that reflects further study into the performance of microprocessor devices The curve consists of a series of steps but still defines combinations of Voltage magnitude and duration that will cause malfunction or damage Ke kWh per pulse i e the energy Electro Industries GaugeTech The Leader In Power Monitoring and Smart Grid Solutions Doc E154701 GL 5 Glossary kWh KYZ Output LCD LED Maximum Demand Modbus ASCII Modbus RTU Network NVRAM Kilowatt hours kW x demand interval in hours Output where the rate of changes between 1 and 0 reflects the magnitude of a metered quantity Liquid Crystal Display Light Emitting Diode The largest demand calculated during any interval over a billing period Alternate version of the Modbus protocol that utilizes a different data transfer format This version is not dependent upon strict timing as is the RTU version This is the best choice for telecommunications applications via modems The most common form of Modbus protocol Modbus RTU is an open protocol spoken by many field devices to enable devices from multiple vendors to communicate in a common language Data is transmitted in a timed binary format providing increased throughput and therefore increased performance A communications connection between
186. r Time e Start Reset is the time when Flicker was started or reset A Reset of Flicker causes the Max Min values to be cleared and restarts the Flicker Pst and Plt timers A Start of Flicker is also equivalent to a Reset in that the PST and PLT are restarted and the Max Min Values are cleared e Stop corresponds to the time when Flicker is turned off e Current is the current clock time e Next Pst is the countdown time to when the next Pst value is available e Next Pit is the countdown time to when the next PIt value is available Status e Indicates the current status Active On Stopped Off Frequency e Base is the operating frequency 50 or 60 Hz selected in the EN50160 Flicker screen see Section 14 3 e Current is the real time frequency measurement of the applied Voltage Base Voltage e The normalized Voltage for the selected frequency 230 V for 50 Hz or 120 V for 60 Hz Flicker Monitoring e Clicking on Stop causes Flicker to stop being processed and freezes all the current values Stop Time is recorded and the current Max Min values are cleared e Clicking on Start starts Flicker processing Start Time is recorded e Clicking on Reset causes the Max Min values to be cleared and restarts the Flicker Pst and Plt timers 4 Electro Industries GaugeTech Doc E151701 14 6 The Leader In Power Monitoring and Smart Grid Solutions 14 EN50160 IEC61000 4 15 Flicker Use the tab
187. recommend it for all serial modem solutions Modem Connected to a Computer the Originate Modem e Restore modem to factory settings This erases all previously programmed settings e Set modem to display Result Codes The computer will use the result codes e Set modem to Verbal Result Codes The computer will use the verbal result codes e Set modem to use DTR Signal This is necessary for the computer to ensure connection with the originate modem e Set modem to enable Flow Control This is necessary to communicate with the remote modem connected to the Nexus meter e Instruct modem to write the new settings to activate profile This places these settings into nonvolatile memory the settings will take effect after the modem powers up Modem Connected to the Nexus Meter the Remote Modem e Restore modem to factory settings This erases all previously programmed settings e Set modem to auto answer on n rings This sets the remote modem to answer the call after n rings 4 Electro Industries GaugeTech Doc E151701 5 17 The Leader In Power Monitoring and Smart Grid Solutions 5 Serial Communication Wiring e Set modem to ignore DIR Signal This is necessary for the Nexus meter to insure connection with the originate modem e Set modem to disable Flow Control The Nexus meter s RS232 communication does not support this feature e Instruct modem to write the new settings to activate profile This places t
188. ries GaugeTech The Leader In Power Monitoring and Smart Grid Solutions Doc E151701 11 14 11 Electrical Installation FORM 9S TRANSFORMER RATED 3 SERVICE DELTA 3WIRE 2 PTs 2 CTs LINE v3 V2 v1 2 4 LOAD Figure 11 10 Form 9S 3 Wire Delta 2 PTs 2 CTs e The protective ground connections for the transformers are omitted in the diagrams and are not required for the meter to work properly However we strongly recommend those connections to reduce shock hazard e Shorting switches blocks for the current transformers secondary side are also not shown To prevent electrical shock we recommended you use such shorting switches blocks Make sure the CTs second ary are shorted before disconnecting them from the meter s current input terminals Ci Electro Industries GaugeTech Doc E151701 11 15 The Leader In Power Monitoring and Smart Grid Solutions 11 Electrical Installation FORM 36S TRANSFORMER RATED SERVICE WYE 4WIRE 3 NO PTs 3 CTs N LINE V3 V2 V1 N LOAD Figure 11 11 Form 36S 2 5 Element Wye no PTs 3 CTs e The protective ground connections for the transformers are omitted in the diagrams and are not required for the meter to work properly However we strongly recommend those connections to reduce shock hazard Shorting switches blocks for the current transformers secondary side are also not
189. ring and Smart Grid Solutions Doc E154701 GL 11 Glossary Voltage Vaux This is the fourth Voltage input measured from between the Vaux and Vref inputs This input can be scaled to any value However the actual input Voltage to the meter should be of the same magnitude as the Voltages applied to the Va Vb and Vc terminals 5 Electro Industries GaugeTech The Leader In Power Monitoring and Smart Grid Solutions Doc E154701 GL 12
190. rms 9Z and 36Z see Chapter 12 NOTE Form 45S replaces Form 5S and may also be used in 4 wire Delta circuits Table 1 Nexus 1262 1272 Meter Forms Form Hookup 9S 3E Wye or Delta 36S 2 1 2E Wye 45S 2E or 4W Delta NOTE See Section 2 6 for Rated Voltages Electro Industries GaugeTech The Leader In Power Monitoring and Smart Grid Solutions Doc E151701 2 Meter Overview 2 5 Nexus 1262 1272 Meter Accuracy Table 2 Nexus 1262 1272 Meter Accuracy Value Accuracy Voltage 0 02 Current 0 05 Frequency 0 001Hz W 0 06 Wh 1 0PF 0 06 Wh 0 5PF 0 10 VAR 0 10 VA 0 10 PF 0 10 2 6 Nexus 1262 1272 Meter Specifications Overview Sense Inputs Current AC e Transformer CT rated e Two or three current inputs depending on Form Ia Ib Ic e Class 2 1A nominal burden 0 000312VA 2 5A e Class 10 20 5A nominal burden 0 0125VA 25A e 0 1 of nominal pick up current e 120 over range of Meter Class e Current surge withstand at 23 C 100 Amps for 10 seconds 300 Amps for 3 seconds 500 Amps for 1 second e The current inputs are only to be connected to external current transformers 3 Electro Industries GaugeTech The Leader In Power Monitoring and Smart Grid Solutions Doc 151701 2 10 2 Meter Overview Voltage AC e Blade powered unit standard Voltage Option S 480V max Phase to Reference V
191. rol of communications is passed to the calling software program The modem responds to computer commands to download data or other actions authorized by the meter passwords Refer to the Communicator EXT User Manual for instructions on programming the modem 5 4 4 Dial Out Function The Dial Out Function INP2 is intended to allow the meter to automatically report certain conditions without user intervention The modem is normally polling the meter to determine if any abnormal or reportable conditions exist The modem checks the following meter conditions and programmed events set in Communicator EXT to determine if a call should be placed e Are any meter set point limits exceeded e Has the status of high speed inputs changed e Has a waveform been recorded e Has a power quality event been recorded e Has a control output changed e Has the meter experienced a loss of control power 3 Electro Industries GaugeTech Doc 151701 The Leader In Power Monitoring and Smart Grid Solutions 5 Serial Communication Wiring e Is either history log approaching a full condition e Is the event log approaching a full condition e Is any other log approaching a full condition e Has the modem password failed e Has communication with the meter failed If any of the monitored events exist the modem automatically initiates a call to a specified location to make a report or perform some other function For log full co
192. rs Current Transformers Power Multiplier PT Multiplier x CT Multiplier Enter the Numerator and Denominator for each instrument transformer For example a PT with a ratio of 7200 120 has a numerator or 7200 a denominator or 120 anda multiplier of 60 7200 120 60 1 Meter Secondary Voltage Volts 120 Meter Secondary Current Amps 5 Base Conversion Factors Quantity Trans Multiplier Trf IT Sec Meter Base Meter Trf former Voltage 120 Current 5 For Transformer Voltage enter the Phase to Neutral value of Test Voltage previously calculated For Transformer Current enter the Full Load Current previously calcu lated For Multipliers enter the PT and CT multipliers previously calculated TrfIT Secondary is the Base Value of Voltage and Current at the Instrument Trans former Secondary of the Power Transformer These numbers are obtained by dividing the Transformer Voltage and Current by their respective Multipliers The Meter Trf values for Voltage and Current are obtained by dividing the Meter Base values by the TrfIT Secondary values 4 Electro Industries GaugeTech Doc E151701 8 8 The Leader In Power Monitoring and Smart Grid Solutions 8 Transformer Loss Compensation Load Loss at Transformer No Load Loss Watts kW 1 Phase kW No Load Loss No Load Loss VA kVA Exciting Current 1 Phase kVA Self Cooled R
193. rs Short TX to RX becomes signal Short TX to RX becomes signal SH r Meter s RS485 Port Lo Figure 5 7 Meter Connected to a PC Using Unicom 2500 The Unicom 2500 can be configured for either 4 wire or 2 wire RS485 connections Since the Set the Set switch to DCE Baud rate Nexus meter uses a 2 wire connection you need to add jumper wires to convert the Unicom 2500 to the 2 wire configuration As shown in Figure 5 7 you connect the RX and TX terminals with a jumper wire to make the terminal and connect the RX and TX terminals with a jumper wire to make the terminal See the figure on the right for the Set switch Unicom 2500 s settings The Unicom s Baud rate to RD must match the Baud rate of the meter s RS485 port you set the Baud rate by turn ing the screw to point at the rate you want 4 Electro Industries GaugeTech Doc E151701 5 8 The Leader In Power Monitoring and Smart Grid Solutions 5 Serial Communication Wiring 5 3 3 RJ11 Telephone Line Connection Meter with INP2 Internal Modem with Dial In Dial Out Option Use RJ11 Standard Telephone Line to connect with the meter The RJ11 line is connected to Cable 5 from the back of a meter with the Internal Modem Option The RJ11 connector is supplied with the meter The length of the connection using RJ11 into the meter is virtually unlimited To connect with other meters in either local or remote locati
194. rt Com Port Settings Nexus Status Firmware Versions Nexus Info Average PF Received Average PF Delivered VARh per Quadrant VAh per Quadrant Wh per Quadrant Qh Cumulative Demand Rolling Window Demand Block Window Demand Power Factor per Phase Power Factor per Quadrant TOU Wh Rec TOU VAh Qi TOU VARh Q1 The Leader In Power Monitoring and Smart Grid Solutions 4 Electro Industries GaugeTech Doc E151701 3 Operating Instructions 83 84 85 86 87 88 89 90 91 92 93 TOU VAh Q4 TOU VARh Q4 TOU Wh Del TOU VAh Q2 TOU VARh Q2 TOU VAh Q3 TOU VARh Q3 TOU W Demand Rec TOU W Demand Del TOU VAR Demand TOU VAR Demand Electro Industries GaugeTech The Leader In Power Monitoring and Smart Grid Solutions Doc E151701 3 Operating Instructions This page intentionally left blank Electro Industries GaugeTech Doc E151701 The Leader In Power Monitoring and Smart Grid Solutions 4 Performing Meter Testing 4 Performing Meter Testing The information contained within this chapter is intended to be an aid to qualified metering personnel It is not intended to replace the extensive training necessary to install or remove meters from service Any work on or near energized meters meter sockets or other metering equipment presents the danger of electrical shock personal injury or death All work on these products must be per formed by qu
195. ry Transient voltage sub cycle Line cable switching transient with decay duration Capacitor switching Load switching Sag swell RMS voltage multiple cycle Remote system faults duration Interruptions RMS voltage multiple System protection seconds or longer duration Circuit breakers Fuses Maintenance Under voltage over voltage RMS voltage steady state Motor starting multiple seconds or longer Load variations duration Load dropping Voltage flicker RMS voltage steady state Intermittent loads repetitive condition Motor starting Arc furnaces Harmonic distortion Steady state current or volt Non linear loads age long term duration System resonance Table 1 3 Typical Power Quality Problems and Sources It is often assumed that power quality problems originate with the utility While it is true that many power quality problems can originate with the utility system many problems originate with customer equipment Customer caused problems may manifest themselves inside the customer location or they may be transported by the utility system to another adjacent customer Often equipment that is sensitive to power quality problems may in fact also be the cause of the problem If a power quality problem is suspected it is generally wise to consult a power quality professional for assistance in defining the cause and possible solutions to the problem 3 Electro Industries GaugeTech The Leader In Power Monitoring and Smart
196. s at the top of the screen to navigate to the Instantaneous Short Term and Long Term Readings views shown on the right side of the screen Instantaneous Readings NOTE The Instantaneous view is the default of this screen See the screen pictured on the previous page If you are in the Short or Long Term views click on the Instan taneous tab to display this view e The PU values Pinst for Voltage Inputs Va Vb and Vc are displayed here and are continuously updated The corresponding Current Voltage values for each channel are displayed for reference Short Term Readings Click on the Short Term tab access a screen containing three groups of Pst readings shown below EN50160 IEC 61000 4 30 Flicker Time Short Term Start Reset 12 07 2010 1 Volts C Max Volts A Max Yolts B Max Volts C 0 251 a Min Volts A 12 29 2010 14 2 Min Yolts B Min Yolts C O am ES Flicker Monitoring Polling Flicker Readings Pst Readings Displayed e Current Pst values for Va Vb and Vc and the time of computation e Current Pst Max values for Va Vb and Vc since the last reset and the time of the last reset The Leader In Power Monitoring and Smart Grid Solutions i Electro Industries GaugeTech Doc E151701 14 7 14 EN50160 IEC61000 4 15 Flicker e Current Pst Min values for Va Vb and Vc since the last reset and the time of the last reset Long Term Readings 1 Click on the Long Term t
197. s synchronized automatically NOTE Replacement of the Modem Battery is explained in Section 5 4 4 3 Electro Industries GaugeTech Doc E151701 l The Leader In Power Monitoring and Smart Grid Solutions 6 Hardware Installation 6 2 1 Battery Safety and Disposal Dispose of batteries in accordance with local state and federal hazardous waste regulations For disposal outside the United States follow your country s disposal guidelines 6 3 Mounting the Optional External Displays The Nexus 1262 1272 meter has its own LCD Display on the meter face The optional Nexus LED Displays P40N P41N and P43N as well as the legacy P40N may be used where additional displays are desired The dimensions of the P40N and P40N are different see the figures on the next page The display mounts using a standard ANSI C39 1 drill plan Secure the four mounting studs to the back of the panel with the supplied hardware See Chapter 9 for details on the external displays Six feet of RS485 communication power cable harness is supplied Allow for at least a 1 25 inch 3 17cm diameter hole in the mounting panel for the cable harness See Chapter 5 for wiring details The display is powered by an external power source such as the PSIO which supplies 12 VDC Electro Industries GaugeTech Doc E151701 The Leader In Power Monitoring and Smart Grid Solutions 6 Hardware Installation 4 38 Sq 11 12
198. sformers these values will typically be the three phase rating and the phase to phase Voltage All of the test measurements are based on these two numbers Part of the process of calculating the loss compensation percentages is converting the transformer loss values based on the transformer ratings to the base used by the meter Correct calculation of loss compensation also requires knowledge of the meter installation In order to calculate the loss compensation settings you will need the following information regarding the meter and the installation e Number of meter elements 4 Electro Industries GaugeTech Doc E151701 8 5 The Leader In Power Monitoring and Smart Grid Solutions 8 Transformer Loss Compensation e Potential transformer ratio PTR e Current transformer ratio CTR e Meter base Voltage e Meter base current This section is limited to application of Nexus meters to three element metering installations As a result we know that e Number of metering elements 3 e Meter base Voltage 120 Volts e Meter base current 5 Amps 8 2 1 1 Three Element Loss Compensation Worksheet Company Station Name Date Trf Bank No Trf Manf Trf Serial No Calculation by Transformer Data from Transformer Manufacturer s Test Sheet Winding Voltage MVA Connection HV High A Y XV Low A Y YV Tertiary A Y 4 Electro Industries Gaug
199. sheet but ONLY if you have MS Excel installed on your computer A copy of the Excel Spreadsheet is shown on the following pages with example numbers 2 Enter the required data into the Excel Spreadsheet The Excel program will calcu late the values needed for the Transformer Loss screen of the Device Profile 3 Enter the values into the Device Profile Manually 1 Use the worksheet found in Chapter 8 Three Element Loss Compensation Work sheet to calculate the values by hand Refer to the Notes under each section 2 Enter values based on the transformer manufacturer s test report The worksheet is progressive and notes under each section will guide you to the next section 3 Enter the values into the Device Profile A 2 Excel Spreadsheet with Example Numbers If you have MS Excel installed in your computer use the TLC Calculator button on the Transformer Loss screen of the Device Profile Refer to the spreadsheet copies with example numbers found on the following pages IMPORTANT Refer to Appendix B of the Communicator EXT User Manual for additional instructions and information on the Transformer Line Loss application Cj Electro Industries GaugeTech Doc E151701 A 1 The Leader In Power Monitoring and Smart Grid Solutions A TLC Spreadsheet and Examples Electro Industries GaugeTech 877 EIMETER 877 346 3837 1800 Shames Drive Westbury NY 11590 System Losses Summary EIG Loss Compensatio
200. shown To prevent electrical shock we recommended you use such shorting switches blocks Make sure the CTs second ary are shorted before disconnecting them from the meter s current input terminals 4 Electro Industries GaugeTech Doc E151701 12 17 The Leader In Power Monitoring and Smart Grid Solutions 12 Switchboard Meter SERVICE 2 5 EL WYE NO PTs 3 CTs 3 VOR ke loka 1 SE CH1 cH2 cH3 cH4 Gateway DUO MSC 6765 43 21 N IRIG B _COM1 coma HIGH SPEED 1 Electro Industries GaugeTech www electroind com 2 Caution Power Supply Input on new units is configured differently Please check wiring carefully Ve la Hi Ib Hi lc Hi 0 0 0 0 0 61610 x v1 o V3 N e LOAD Figure 12 17 36Z 2 5 Element Wye no PTs 3 CTs The protective ground connections for the transformers are omitted in the diagrams and are not required for the meter to work properly However we strongly recommend those connections to reduce shock hazard Shorting switches blocks for the current transformers secondary side are also not shown To prevent electrical shock we recommended you use such shorting switches blocks Make sure the CTs second ary are shorted before disconnecting them from the meter s current input terminals 4 Electro Industries GaugeTech Doc E151701 12 18 The Leader In Power Monitoring and Smart Grid Solutions 12
201. sly The Nexus 1262 1272 system provides a direct digital link allowing selected data to be gathered without affecting the meter or your data All of the advanced features of the 1262 1272 are made available through industry standard Modbus and DNP 3 0 protocols No proprietary or closed protocols are used Standard Communications e ANSI Type 2 Optical port e 2 RS485 serial ports Modbus RTU ASCII protocol e DNP 3 0 Level 2 protocol e Speeds up to 115200 bps Optional Communications The Nexus 1262 1272 meter allows you to select an additional port for one of the following uses e INP2 Internal 56k Modem with telephone line noise rejection e INP200 Internal Ethernet TCP IP 10 100BaseT with multiple sockets and Modbus TCP and DNP TCP e INP202 Combination 56k Modem and Internal Ethernet TCP IP 10 100BaseT 3 Electro Industries GaugeTech The Leader In Power Monitoring and Smart Grid Solutions Doc E151701 2 6 2 Meter Overview Standard Internal I O Extensive I O capability is available in conjunction with all metering functions e IRIG B Time Synchronizing to GPS to 1 millisecond resolution e 8 High Speed Status Inputs for status detect or of load aggregation universal metering inputs e Four KYZ pulse outputs which can be programmed to pulse for any accumulated reading One of the pulse outputs can also be set for an End of Interval Sync Pulse Upgradable External 1 O The user can select from the f
202. ss 1 Host IP Address per your network administrator Example 10 0 0 1 Network Port 502 Protocol Modbus TCP NOTE See Section 5 7 for the factory settings 4 Click the Connect button at the bottom of the screen Communicator EXT connects to the meter via the Network NOTES e Communicator EXT always communicates via Modbus TCP which is the default pro tocol for Nexus meters Cj Electro Industries GaugeTech Doc E151701 5 30 The Leader In Power Monitoring and Smart Grid Solutions 5 Serial Communication Wiring e See the Communicator EXT User Manual for more details on the Network option and the Web server Total Web Solutions 5 6 INP202 Ethernet Modem Combination The INP202 Option is an extension of INP200 It has all the features of INP200 plus a built in modem The communication protocol supported by the modem is Modbus ASCII The communication protocol supported by the RS485 Ethernet Modem Gateway is Modbus RTU INP202 converts all incoming Modem Modbus ASCII requests to Modbus RTU for internal and gateway communication It then converts all response Modbus RTU messages into Modbus ASCII and sends the responses to the modem 5 6 1 Hardware Overview The Nexus 1262 1272 meter with the INP202 Option has all the components of an INP200 Nexus meter plus a built in modem It has the capability of connecting to a network through an Ethernet LAN and with other devices via modem 5 6 2 Hardware Conne
203. st Q2 Q3 Q2 Q3 Reading 2 2 2 2 kItA kI tB kI tC kV tA Phase Angles V Phase Angles I A B C Phase Angles V AN BN CN AB BC CA THD Volts AN BN CN Block WinAvg Max kWatt kVAR CoIn kVAR Max THD Volts AN BN CN Min THD Volts AN BN CN Return to First Reading Return to First Reading Return to First Reading Max THD IA IB IC Min THD IA IB IC 1 Second INc INm Pred Roll Win Avg kWatt kVAR CoIn kVAR Return to First Reading Return to First Reading Return to First Reading 2 kV tB Phase Return to First Reading Sequence Electro Industries GaugeTech The Leader In Power Monitoring and Smart Grid Solutions Doc E151701 9 10 9 Using the External Displays 9 5 Nexus Information Mode Use the MODE button to access the Nexus Information Mode from other Modes Use the UP DOWN arrows to navigate from Group to Group within this Mode See Section 9 6 for a Navigation map of the Nexus Information Mode Group 1 Device Time Meter Time Group 2 Communication Settings Use the Left Right arrows to access the follow ing readings in order e Communication Settings Port 1 Baud Addr Protocol e Communication Settings Port 2 Baud Addr Protocol e Communication Settings Port 3 Baud Addr Protocol e Communication Settings Port 4 Baud Addr Protocol Group 3 PT CT Ratios Use the Left Right arrows to access the following readings in or
204. stations in actual use When attempting to determine the type of connection in use it is a good practice to follow the circuit back to the transformer that is serving the circuit It is often not possible to conclusively determine the correct circuit connection simply by counting the wires in the service or checking voltages Checking the transformer connection will provide conclusive evidence of the circuit connection and the relationships between the phase voltages and ground 1 1 1 Wye Connection The wye connection is so called because when you look at the phase relationships and the winding relationships between the phases it looks like a Y Figure 1 1 depicts the winding relationships for a wye connected service In a wye service the neutral or center point of the wye is typically grounded This leads to common voltages of 208 120 and 480 277 where the first number represents the phase to phase voltage and the second number represents the phase to ground voltage 3 Electro Industries GaugeTech The Leader In Power Monitoring and Smart Grid Solutions Doc 151701 1 1 1 Three Phase Power Measurement Ve Phase 2 N Phase 3 Phase 1 VB A Va Figure 1 1 Three phase Wye Winding The three voltages are separated by 120 electrically Under balanced load conditions the currents are also separated by 120 However unbalanced loads and other conditions can cause the currents to depart from the ideal 120 separation Thre
205. sub Sub Sub iat i 0 u 0 u n l x en Cnt x Pct n l 2x n 1 Len 5 Electro Industries GaugeTech Doc E151701 13 10 The Leader In Power Monitoring and Smart Grid Solutions 14 EN50160 IEC61000 4 15 Flicker 14 EN50160 IEC61000 4 15 Flicker 14 1 Overview Flicker is the sensation experienced by the human visual system when subjected to changes in the illumination intensity of light sources The primary effects of Flicker are headaches and irritability sometimes Flicker can trigger epileptic fits IEC61000 4 15 and former IEC868 describe the methods used to determine Flicker severity Since this phenomenon is strictly related to the sensitivity and reaction of individuals it can only be studied on a statistical basis by setting up suitable experi ments among people 14 2 Theory of Operation Flicker can be caused by voltage variations which in turn are caused by variable loads such as arc furnaces laser printers and microwave ovens In order to model the eye brain change which is a complex physiological process the signal from the power network has to be processed while conforming with Figure 14 1 shown on page 14 4 e Block 1 consists of scaling circuitry and an automatic gain control function that nor malizes input Voltages to Blocks 2 3 and 4 For the specified 50 Hz operation the Voltage standard is 230 V RMS e Block 2 recovers the Voltage fluctuation by squaring the input Voltage scale
206. t 1 W a Apparent Power VA per phase For Wye x b c VA Ves ol RMS Electro Industries GaugeTech Doc E151701 The Leader In Power Monitoring and Smart Grid Solutions 13 2 13 Meter Calculations Reactive Power VAR per phase For Wye x a b c VAR VA W Q per Phase For Wye x a b c _ VAR W Q 2 Active Power Watts Total N number of samples For Wye W W W W For Delta N Do ac TVn ln t 1 N W Reactive Power VAR Total N number of samples For Wye VAR VAR VAR VAR 5 Electro Industries GaugeTech Doc E151701 The Leader In Power Monitoring and Smart Grid Solutions 13 Meter Calculations For Delta 2 2 N N gt Vaco laco 2 Viet Lo I I VAR Crusa Trus N C rus Lrus N Apparent Power VA Total For Wye VA VA VA VA For Delta VA JW VAR Total Q For Wye Q Q Q ay Q For Delta 3VAR W j 2 4 Electro Industries GaugeTech Doc E151701 13 4 The Leader In Power Monitoring and Smart Grid Solutions 13 Meter Calculations Total Energies x y WrWh or VAR7 VARh y or VA VAh or Qr Qh Raa 3600sec Power Factor PF For Wye x a b c T For Delta x T PF We VA Total Average Power Factor x Quadrants 1 amp 4 positive Wh Quadrants 2 amp 3 negative Wh Wh PF p
207. t quantities of higher order harmonics Since much voltage monitoring and almost all current monitoring is performed using instrument transformers the higher order harmonics are often not visible Instrument transformers are designed to pass 60 Hz quantities with high accuracy These devices when designed for accuracy at low frequency do not pass high frequencies with high accuracy at frequencies above about 1200 Hz they pass almost no information So when instrument transformers are used they effectively filter out higher frequency harmonic distortion making it impossible to see However when monitors can be connected directly to the measured circuit such as direct connection to a 480 volt bus the user may often see higher order harmonic distortion An important rule in any harmonics study is to evaluate the type of equip ment and connections before drawing a conclusion Not being able to see harmonic distortion is not the same as not having harmonic distortion It is common in advanced meters to perform a function commonly referred to as waveform capture Waveform capture is the ability of a meter to capture a present Electro Industries GaugeTech The Leader In Power Monitoring and Smart Grid Solutions Doc E151701 1 16 1 Three Phase Power Measurement picture of the voltage or current waveform for viewing and harmonic analysis Typi cally a waveform capture will be one or two cycles in duration and can be viewed as
208. ta from Xmfr Value O Transformer kVA Rating O KVAr 9 999 3333 00 Rated Secondary L_N Volts W Publishing and duplicating rights are property of Electro Industries Gauge Tech This spreadsheet is designed only to be used with EIG Nexus based metering equipment Electro Industries GaugeTech The Leader In Power Monitoring and Smart Grid Solutions Doc E151701 A TLC Spreadsheet and Examples This page intentionally left blank Electro Industries GaugeTech The Leader In Power Monitoring and Smart Grid Solutions Doc E151701 B Blade Configuration for Forms 9S 36S 45S B Blade Configuration for Forms 9S 36S and 45S B 1 1262 1272 Forms Four supported forms for the Nexus 1262 1272 Socket meters with their wiring configurations are shown in Chapter 11 Those forms are based on the rated Voltage and hookup required for your application Custom forms and configurations are also available from EIG The three supported forms with wiring configurations for the Nexus 1262 1272 Socket meters are listed below 9S e Wye no PTs or 3 PTs 3CTs e 3 Wire Delta no PTs or 2 PTs 2 CTs e 2 5EL Wye no PTs or 2 PTs 3 CTs e 4 Wire Delta no PTs or 2 PTs 2 CTs e 4 Wire Delta no PTs or 3 PTs 3 CTs 36S e 2 5EL Wye no PTs or 2 PTs 3 CTs 45S e Wye no PTs or 2 PTs 3 CTs e 3 Wire Delta no PTs or 2 PTs 2 CTs e 4 Wire Delta no PTs or 2 PTs 2 CTs Electro Industries Gau
209. ters Installation of the Nexus 1262 1272 meter must be performed only by qualified personnel who follow standard safety precautions during all procedures Those personnel should have appropriate training and experience with high voltage devices Appropriate safety gloves safety glasses and protective clothing are recommended During normal operation of the Nexus meter dangerous voltages flow through many parts of the unit including Terminals and any connected CTs Current Trans formers and PTs Potential Transformers all I O Modules and their circuits All Primary and Secondary circuits can at times produce lethal voltages and currents Avoid contact with any current carrying surfaces Do not use the meter or any I O device for primary protection or in an energy limiting capacity The meter can only be used as secondary protec tion Do not use the meter for applications where failure of the meter may cause harm or death Do not use the meter for any application where there may be a risk of fire All meter terminals should be inaccessible after installation Do not apply more than the maximum voltage the meter or any attached device can withstand Refer to meter and or device labels and to the Specifications for all devices before applying voltages Do not HIPOT Dielectric test any Outputs Inputs or Com munications terminals 3 Electro Industries GaugeTech Doc E151701 11 1 l The Leader In Power Monitori
210. the fields and the valid entries for them Electro Industries GaugeTech Doc E151701 The Leader In Power Monitoring and Smart Grid Solutions 3 Operating Instructions Entry fields Possible entries Registers per item 1 8 Register contents Binary BCD Text Scaled Energy Data Signed Unsigned Divide contents by 1 100 65536 Multiply by User multiplier enter in blank field PT Ratio CT Ratio Data format Number Text Power factor Time Date Time amp Date Status indicator Numerical sign Auto Forced negative Forced positive Show sign No Yes Scale Auto None kilo k Mega M Giga G Total digits 1 10 Digits to the right of the decimal place 1 8 3 Once you finish making your entries click OK to return to the Screen Assignments tab The new screen is now listed in the left most column Click on it and then right click to assign it to one or all of the View modes 4 When you finish programming the LCD display click e Save to save the LCD Programmable Settings to a nds2 file e Upload to upload the LCD Programmable Settings to the connected 1262 1272 meter e Cancel to exit the screen without saving any changes Electro Industries GaugeTech Doc 151701 The Leader In Power Monitoring and Smart Grid Solutions 3 Operating Instructions Editing a Pre defined Display Screen You have the following options for editing pre d
211. the following read ings in order e kWatthr Quadrant 2 Quadrant 3 Primary e kVARhr Quadrant 2 Primary e kVARhr Quadrant 3 Primary Group 8 Accumulations Use the Left Right arrows to access the following read ings in order e kI2tA e kI2t B e kKI2tC e kV2tA e kV2tB e kV2t C Electro Industries GaugeTech Doc E151701 The Leader In Power Monitoring and Smart Grid Solutions 9 Using the External Displays Group 9 Phase Angles Use the Left Right arrows to access the following readings in order e Phase Angle Van bn cn e Phase Angle Ia b c e Phase Angle Vab bc ca e Phase Sequence Cj Electro Industries GaugeTech Doc E151701 The Leader In Power Monitoring and Smart Grid Solutions 9 Using the External Displays 9 4 Navigation Map of Dynamic Readings Mode e Use Left Right arrow keys to navigate Readings e Use Up Down arrows to scroll between groups Readings 1 Second Volts AN BN CN Minimum Volts AN BN CN Maximum Volts AN BN CN Maximum Volts AB BC CA Minimum Volts AB BC CA Minimum IA IB IC Maximum IA IB IC THD TA IB IC Max kWatt kVAR Coln kVAR Max k Watt kVAR CoIn kVAR Positive Negative Return to G r o u p S 1 Second Volts AB BC CA 1 Second kWatt KVAR 1 Second kVA PF lag Frequency Positive kWatthour kVARhr kVARhr First Q1 Q4 Ql Q4 Reading Negative Positive Negative Return to kWatthr kVARhr kVARhr Fir
212. to the next new end date which will be taken from the new calendar Once stored prior accumulations are always available and cannot be reset See the Communicator EXT User Manual for instructions on resetting TOU accumulations 4 Electro Industries GaugeTech Doc E151701 7 9 The Leader In Power Monitoring and Smart Grid Solutions 7 Time of Use Function At the end of a defined period current accumulations are stored the registers are cleared and accumulations for the next period begin When the year boundary is crossed the second calendar if present is used To retain continuity you have up to one year to replace the old calendar with one for the following year 7 5 Daylight Savings and Demand To use Daylight Savings Time you must enable it in the Nexus meter s Device Profile Time Settings Click Auto DST which sets Daylight Savings Time automatically for the United States ONLY You can also select User Defined and enter the desired dates for Daylight Savings Time See Chapter 4 in the Communicator EXT User Manual for details e To set Demand Intervals from the Device Profile select Revenue amp Energy Settings gt Demand Integration Intervals and set the desired intervals Click OK e To set Cumulative Demand Type from the Device Profile click Revenue amp Energy Settings gt Cumulative Demand Type and select Block or Rolling Window Click OK Electro Industries GaugeTech The Leader In P
213. trictly VAR hours limit the test parameters to one quadrant during testing In the event of a power outage data for Test Mode Energy Demand and Power Factor is not saved Upon power up the meter returns to Normal Mode The test data is lost and all registers are restored to their pretest values While in Test Mode the IR Port and Communications Port 1 are available for communication with the meter In Test Mode you can preset the values of the energy readings that will be restored to the meter when Test Mode is exited using Communicator EXT see following section 4 2 3 4 2 3 Test Mode Preset Accumulators There are two reasons to use the Preset Accumulators screens 1 A monitor in Test Mode is out of service and is therefore not monitoring accumula tions The New Value field can be used to adjust for the values not monitored while in Test Mode 2 When replacing an old meter that has accumulations with a new meter that has no accumulations the New Value field can be set to the value of the existing accumu lations Ci Electro Industries GaugeTech Doc E151701 4 5 The Leader In Power Monitoring and Smart Grid Solutions 4 Performing Meter Testing Setting Test Mode Preset Accumulators 1 From Communicator EXT s Main screen select Tools gt Test Mode gt Preset Accumulators You will see the screen shown below Test Mode Preset Uncompensated Energy 1 amp Y Squared T Accumulators Cumulative Demand Seco
214. tton at any time See the Navigation map in Section 3 4 for display mode details e Test mode automatically returns to View mode 1 after an amount of time since the last user action with no energy accumulation or an amount of time since the last user action plus the Demand interval with energy accumulation The values for the amount of time since the last user action are set through Communicator EXT see Section 3 5 instructions for the Miscellaneous tab Electro Industries GaugeTech Doc E151701 The Leader In Power Monitoring and Smart Grid Solutions 3 Operating Instructions Display Configurator A Nexus meter with the appropriate firmware User Programmable LCD Display Run Time Firmware version 100 LCD Display Boot version 30 Base meter s COM Run Time 624 or higher post November 2010 gives you the Display Configurator which lets you assign up to 75 LCD display screens across the three View modes These screens can be made of any combination of pre defined screens see Section 3 6 1 pre defined screens with some customization and fully customized screens with any of the meter s measured readings and numeric calculations such as scaling The Display Configurator s flexibility lets you match the display screens to any application needs you have Refer to Section 3 5 for programming details Base Programmable Display Nexus meters with an LCD Display Run Time Firmware version of less than 100 pre November
215. two or more devices to enable those devices to send to and receive data from one another In most applications the network is either a serial type or a LAN type Nonvolatile Random Access Memory able to keep the stored values in memory even during the loss of circuit or control power High speed NVRAM is used in the Nexus meter to gather 4 Electro Industries GaugeTech The Leader In Power Monitoring and Smart Grid Solutions Doc E154701 GL 6 Glossary measured information and to insure that no information is lost Optical Port A port that facilitates infrared communication with a meter Using an ANSI C12 13 Type II magnetic optical communications coupler and an RS232 cable from the coupler to a PC the meter can be programmed with Communicator EXT software Packet A short fixed length section of data that is transmitted as a unit Example a serial string of 8 bit bytes Percent THD Percent Total Harmonic Distortion See THD Protocol A language that is spoken between two or more devices connected on a network PT Ratio Potential Transformer Ratio used to scale the value of the Voltage to the primary side of an instrument transformer Also referred to as VT Ratio Pulse The closing and opening of the circuit of a two wire pulse system or the alternate closing and opening of one side and then the other of a three wire system which is equal to two pulses Q Readings Q is the quantity obtai
216. twork connection that connects two or more devices on a common communi cations backbone An Ethernet LAN consists of at least one hub device the network backbone with multiple devices connected to it in a star configu ration The most common versions of Ethernet in use are 10BaseT and 100BaseT as defined in IEEE 802 3 standards However several other versions of Ethernet are also available Flicker Flicker is the sensation that is experienced by the human visual system when it is subjected to 3 Electro Industries GaugeTech The Leader In Power Monitoring and Smart Grid Solutions Doc E154701 GL 4 Glossary changes occurring in the illumination intensity of light sources IEC 61000 4 15 and former IEC 868 describe the methods used to determine Flicker severity Harmonics Measuring values of the fundamental current and Voltage and percent of the fundamental Heartbeat Pulse Energy indicator on the face of the Nexus 1250 1252 meter pulses are generated per the programmed Ke value I2T Threshold Data will not accumulate until current reaches programmed level Integer Any of the natural numbers the negatives of those numbers or zero Internal Modem An optional modem within the meter s enclosure that connects to the RJ11 telephone connector Invalid Register In the Nexus meter s Modbus Map there are gaps between Registers For example the next Register after 08320 is 34817 Any unma
217. ty Symbols In this manual this symbol indicates that the operator must refer to an important WARNING or CAUTION in the operating instructions Please see Chapter 11 for important safety information regarding installation and hookup of the meter Dans ce manuel ce symbole indique que l op rateur doit se r f rer a un important AVERTISSEMENT ou une MISE EN GARDE dans les instructions op rationnelles Veuillez consulter le chapitre 11 pour des informations importantes relatives l instal lation et branchement du compteur The following safety symbols may be used on the meter itself Les symboles de s curit suivante peuvent tre utilis s sur le compteur m me This symbol alerts you to the presence of high voltage which can cause dangerous electrical shock Ce symbole vous indique la pr sence d une haute tension qui peut provoquer une d charge lectrique dangereuse 3 Electro Industries GaugeTech Doc E151701 l The Leader In Power Monitoring and Smart Grid Solutions This symbol indicates the field wiring terminal that must be connected to earth ground before operating the meter which protects against electrical shock in case of a fault condition Ce symbole indique que la borne de pose des canalisations in situ qui doit tre bran ch e dans la mise terre avant de faire fonctionner le compteur qui est prot g contre une d charge lectrique ou un tat d fectueux About Electro Industries GaugeTe
218. ugeTech Doc E151701 3 11 The Leader In Power Monitoring and Smart Grid Solutions 3 Operating Instructions 4 Double click Display Configuration You will see the screen show below The first tab is Meter Display Mode Names which lets you assign labels and descriptions to the three View modes Device Display Programmable Settings Enter Mode Label and Description for each mode Label Line 1 Desonpton Line 2 Desenpton View Mode 3 p Firmware versions Boot Version Run Version ET EE a Enter a three letter label for each of the three View modes b Enter a description for each mode using the Line 1 and Line 2 Description fields 5 Click the Screen Assignments tab You will see the screen shown on the next page Electro Industries GaugeTech Doc E151701 The Leader In Power Monitoring and Smart Grid Solutions 3 Operating Instructions Device Display Programmable Settings Display screens available for assignment to View modes Right click on a screen to assign it to View mode or to copyit 1 kWh Dekveted 2 kwh Recewed 3 Block Walt Dekvered 4 Block Wait Recereed 5 AVARh 6 4VARh 7 Walt Last Reset 8 Duplay Chock Deserption 10 Phase to Neutral Votage 11 Phase to Phase Voltage 12 Photos 13 THD Vollage 14 THD Vollage 8 15 THD Volage C 16 THD Cumert A 1 THD Cumerd 8 Desengnon 2 TOU Qunert Morth Roger 1 kWh Dekvered zy TOU Cisrert Moerih Regeter 1
219. unicator EXT Refer to the Communicator EXT User Manual for instructions on programming these features The High Speed Inputs can be used to sense dry contact closures only The meter internally generates the wetting Voltage for the contacts The wetting Voltage is 12V DC 20 2 1 OOO oo 8 6 5 4 OW OD Figure 5 12 High Speed Inputs Connection 5 3 14 IRIG B Connections IRIG B is a standard time code format that synchronizes event time stamping to within 1 millisecond An IRIG B signal generating device connected to the GPS satellite system synchronizes Nexus 1262 1272 meters located at different geographic locations Nexus meters use an un modulated signal from a satellite controlled clock such as Arbiter 1093B For details on installation refer to the Users Manual for the satellite controlled clock in use Below are installation steps and tips that will help you Connection Connect the terminal of the Nexus meter to the terminal of the signal generating device connect the terminal of the Nexus meter to the terminal of the signal generating device 4 Electro Industries GaugeTech Doc E151701 5 19 The Leader In Power Monitoring and Smart Grid Solutions 5 Serial Communication Wiring Installation Set Time Settings for the meter being installed 1 From the Communicator EXT Device Profile menu a Click General Settings gt Time Settings gt
220. wer Monitoring and Smart Grid Solutions j Electro Industries GaugeTech Doc Test Mode Displayed Data and Pulse Source Test Mode Displayed Data Pulse Source Wh Del Delivered Wh Energy kWh Del Wh Rec Received Wh Energy kWh Rec VARh Qi and Q2 VAR in Quadrant1 kVARhr Del VARh in Quadrant 2 VARh Q 3 and Q4 VARh in Quadrant 3 kVARhr Rec VARh in Quadrant 4 VAh Qi and Q4 VAh in Quadrant 1 kVAhr Q1 VAh in Quadrant 4 VAh Q2 and Q3 VAh in Quadrant 2 kVAhr Q3 VAh in Quadrant 3 Watt Demand Rolling Watt Rolling Demand kWH Del Delivered Watt Demand Watt Block Demand kWh Del Delivered E151701 4 4 4 Performing Meter Testing Test Mode Details The Reset Button R is next to the Test Button T Initiate a Test Mode Reset by pressing and releasing the Reset Button while in Test Mode A Test Mode Reset causes all test quantities to be reset to zero and a new block interval to be started The item displayed when the reset occurred remains in the display but the value is initialized While in Test Mode the Test Pulse LED pulses at the rate programmed for the meter The value of the pulse is set in the meter s Device Profile see Section 4 1 1 The meter quantity assigned to the Test Pulse LED changes as the user moves from one test screen to another The assigned values are defined in the Pulse Source column of the table above Individual quadrant tests for VAR hours can be completed by proper test design To test s
221. with custom labeling Click to create S EU User defined custom scree Electro Industries GaugeTech Doc E151701 The Leader In Power Monitoring and Smart Grid Solutions 3 Operating Instructions 1 Click the User defined button in the Screen Type box The screen changes to allow you to set up the new Display screen You can LCD Screen Selection cs IS Screen Type Screen Number 5 number Predefined t Arrangement 3 Select Predefined with custom labeling le 1 Item 2 Items 3ltems number of screen User defined 4 Items 5 Items Jemane imestamp 7 g r define 4 Item 5 ltem 1 Demand 1 Timestamp items OR 1 Demand 1 ta Interpretation The fields in These Screen Layout fields are are determined h for Modbus by the number Borel nformation of items you evan a ae select hese fields ms Ki multiplier setup on Button of the row to edit the Modbus These fields of the item for that are for scaling setup 2 You can change the number shown in the User Screen Number field This field accepts any number up to three digits in length Use numbers between 1 and 999 f you want the number to display on the LCD display screen use numbers between 1000 and 1999 if you don t want the number to display NOTE The Harmonics Phasors and Line Segment screens never display their number on the LCD display screen 3 Use the Layout Arrangement field to choose what fields you want the LCD screen
222. ximately 3W Operating Temperature Range 20 to 70 C 4 to 158 F Overall Dimensions HxWxD 5 25 x 5 25 x 1 79 inches 13 34 x 13 34 x 4 54 cm The legacy P40N dimensions are 4 4 x 4 4 x 2 2 inches 11 1 x 11 1 x 5 9cm Electro Industries GaugeTech The Leader In Power Monitoring and Smart Grid Solutions Doc E151701 9 Using the External Displays This page intentionally left blank 5 Electro Industries GaugeTech Doc E151701 9 18 The Leader In Power Monitoring and Smart Grid Solutions 10 External 1 0 Modules 10 External I O Modules 10 1 Hardware Overview All Nexus External I O modules have the following components Female RS485 Side Port use to connect to another module s male RS485 side port e Male RS485 Side Port use to connect to the Nexus 1250 1252 Meter s Port 3 or 4 or to another module s female RS485 side port See Section 5 3 8 for wiring detail e I O Port used for functions specific to the type of module size and pin configura tion vary depending on type of module e Reset Button Press and hold for three seconds to reset the module s baud rate to 57600 and its address to 247 for 30 seconds e LEDs when flashing signal that the module is functioning e Mounting Brackets MBIO used to secure one or more modules to a flat surface Mounting Brackets MBIO Female RS485 Side Port I O Port Size and Pin Con
223. you have created customized screens you will see those in the list as well j Electro Industries GaugeTech Doc E151701 3 13 The Leader In Power Monitoring and Smart Grid Solutions 3 Operating Instructions The other three columns list the display screens that are assigned to each of the three View modes Use the scroll bars to display all of the items in the columns a To assign one of the screens to a View mode or to create a new screen based on it click on the screen in the list and right click You will see the pop up menu shown below Kkzkx lt m 16 THD Curent Add to View Mode 1 17 THD Curent Add to View Mode 2 Add to View Mode 3 Add to all View Modes Create new screen based on selected screen Note Right click on g e To add the screen to one of the modes or to all modes click on that item in the menu e To create a new screen based on the screen click on the last item in the menu see Step e b To change the position of screens in one of the View modes or to remove the screen from the mode click on the screen in the View mode column and then either e Click Move Up or Move Down to change the position of the screen within that View mode The position of the screens determines their scrolling order e Click Remove to remove the screen from that View mode c To create a custom display screen click Create in the Available Screens column Continue to Creating a Custom Display Screen

Nexus 1262/1272 Meter User Manual V.1.18

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