- Power/Energy Monitors
Contents
1. CT will connect together If both CTs are installed facing the same direction and on different legs Line1 and Line2 or both CTs are installed facing opposite directions and installed on the same leg both Line1 or both Line2 then CT 1 lead will connect to non similar lead color of CT 2 Since there is a 50 50 chance of getting it right you may choose not to pay attention to CT direction and lead phasing and simply try either combination to determine if the CT signals add or subtract The higher of the two reading is the proper one Connecting More Than Two CTs It is advised not to connect more than two CTs to a single channel however in some cases the installer may want to group several rarely used circuits together Modern homes will typically have 3 or 4 double pole circuit breakers for the kitchen counters only which means 6 to 8 panel circuits These usually power appliances such as a toaster coffee machine can opener blender etc Since these appliances are seldom used it may be desirable to group these together on two or three channels to conserve GEM channels More than two Type A CTs Connect the Type A CTs in series must all be the same CT model You can use small wire nuts to daisy chain them together Remember to pay attention to the CT lead polarity The two ends of the CT chain then connects to CT terminals 1 and 4 See Figure 7 left More than two Type B CTs Connect the Type B CTs in pa2. connected between terminals 2 and 3 Figure 2 CT Orientation The orientation specifies the direction that the CT is facing when installed on the circuit breaker conductor The CT orientation is either facing toward or way from the breakers Fig 3 left Current transformers generally have a marking K gt L This mark is used to specify the orientation of the CT If there is no arrow on the CT then identify something unique on the CT Fig 3 right If using two or more CTs ona single channel the orientation with respect to each other can be determined using this identifier This will be explained later in this chapter If the CTs are installed with the improper orientation by mistake this can be corrected by reversing the black white leads when connecting to the GEM rather than re installing the CT Paying attention to orientation will simplify the process of connecting the leads to the GEM Brultech Research Inc www brultech com USECH Ges ect Ska Ss e Ma M BS S ui e N Main Panel CT Connection Each of the GEM s 32 channels has a four point terminal block see Figure 4 Each point is numbered 1 4 The numbers are not marked on the terminal block You must presume the number 1 to 4 starting from the bottom as displayed in Figure 4 The type of CT used determines which of the four terminals the CT leads will be connected to Brultech Research Inc Conduc
3. depending on proper phasing The desired result is the sum of L1 L2 addition of both currents The basic rule to accomplish this is different based on the Type of CT used The two paragraphs below will explain each Type A CTs When using two Type A CTs to monitor a 240V load one CT must be connected to 1 amp 2 terminals and the other to 3 amp 4 terminals The rule for proper phasing is If both CTs are installed facing opposite directions and on different legs Line1 and Line2 or if both CTs are installed facing the same direction and installed on the same leg both on Line1 or both on Line2 then similar CT lead colors will connect to terminals 1 amp 3 and the other two similar colors to terminals 2 amp 4 If both CTs are installed facing the same direction and on different legs Line1 and Line2 or if both CTs are installed facing opposite directions and installed on the same leg both on Line1 or both on Line2 then CT similar colors will connect to terminals 2 amp 3 and the other two similar colors to terminals 1 amp 4 Type B CTs When using two Type B CTs to monitor a 240V load both CTs must be connected in parallel to terminals 2 amp 3 The rule for proper phasing is If both CTs are installed facing opposite directions and on different legs Line1 and Line2 or both CTs are installed facing the same direction and installed on the same leg both Line1 or both Line2 then the same lead color of each
4. exit the electrical panel through an appropriate box connector strain relief or bushing The CT leads must be properly anchored on the outside of the panel e The portion of the CT leads inside the panel must not have any damage cuts or wear to the outside insulation e The CT leads must be routed in such a way that its insulation will not be rubbing against live terminals Care must be exercised not to pinch the CT leads especially when re installing the panel cover e Do not install the CTs in panels with voltages greater than 300V e Do not install the GREENEYE MONITOR GEM in a wet location Current Transformers CT CT Types Important The GEM will accommodate two general types of CTs Type A Millivolt output proportional to the sensed current Type B Milliamp output proportional to the sensed current It is important to determine the type of CT used so that it may be properly connected to the GEM Figure 2 describes the difference between the two types and also lists various CT models for each type Type A CT Type B CT SPLIT 60 SPLIT 100 SPLIT 200 SPLIT 400 600 Micro 40 SPLIT 30 Micro 50 Micro 80 Micro 100 GEM GEM Terminal Terminal Block Block e 40 Load Load Center of CT CT ee Conductor 3 Burden te Resistor Through Resistor roug Inside Center Inside of CT GEM lo Type B CT has no internal burden resistor and uses the GEM s Type A CT has an internal burden resistor We built in burden resistor
5. BRULTECH RESEARCH INC GEM Quick Guide Basic Installation Manual For 120V 240V Single Phase Installation Only DOC Code GEM QGD Ver 1 0 This manual is an installation brief For more detailed information download a more detailed version from our site www brultech com software BRULTECH NOTE Brultech Research inc 1 Introduction e Do not use this manual for 3 phase or 120V 208V systems fed from two legs of a three phase service Refer to the three phase guide available from the site listed below e This document provides brief installation instructions A more detailed and up to date User s Manual is available from Brultech website www brultech com software FCC Compliance Compliance The GreenEye Monitor has been tested to Comply with FCC Standards for Home and Office Use This device complies with Part 15 of the FCC Rules Operation is subject to the following two conditions FC 1 this device may not cause harmful interference and 2 this device must accept any interference received including interference that may cause undesired operation Wireless Versions Contains FCC ID OUR XBEE2 USA Wireless Versions Only Contains Model XBee ZNet 2 5 Radio IC 4214A XBEE2 Canada May Contain Roving Networks WiFly Module FCC ID T9J RN171 May Contain FCC ID AZYHF A111 UL and CSA Compliance The GREENEYE MONITOR GEM operates as a Class II low voltage device This requires that all connections to t
6. EE 9 SPLIT 200 CTs have longer leads than Micro CTs SPLIT 200 CTs have longer leads GEM than Micro CTs Figure 9 It is also important to consider where the CT leads will be routed when choosing a location to mount the GEM If mounted too far away the CT leads may not reach the terminal strips 1 Wire Bus The 1 Wire bus is used to connect up to eight temperature sensors All sensors connect to the same three wires bus see Figure 10 The sensors may be DS18B20 or DS18S20 types Brultech Research Inc www brultech com Brultech Research inc 38 BRUPECH Sg 1 Wire Bus Black Yellow Red GND DATA 5V Temperature Sensors Figure 10 Pulse Count Inputs The GEM has four pulse count inputs see Figure 11 Pulse counter 1 and 2 are totally isolated from the GEM ground and circuit If using any of these inputs a DC pulse signal between 3V and 24VDC is required ene oe Counter 4 SN et PULSE ot Ee o lt Counter 3 Sp a ulse e We SEH 3 3V to 24VDC Counter 2 4 L t 8 counter 1 sos E n i 24vDC Pulse Counter Terminal Block Figure 11 Pulse counters 3 and 4 are dry contact type counters These inputs require switch contacts not connected to any power source such as relay contacts or magnet switch contacts Very low voltage from the circuit SVDC is used to complete the circuit RS 232 Port Every GEM devi
7. H Terminal 18 26 AWG Block Press the spring lever with a flat screwdriver Insert the wire ends fully and release the lever Figure 8 Potential Transformer The potential transformer PT is used to sample the power line voltage Its function is to reduce the line voltage to safe levels and create Class Il isolation between the power line and the GEM The PT included in the GEM package is an AC wall transformer which must be connected to a 120VAC outlet as close as possible to the electrical panel monitored The PT s 12VAC connects to the GEM via a 3 5mm phone plug When plugging the PT s 3 5mm plug into the PT jack on the GEM make sure the plug is fully inserted Other PTs are available for other voltage potential such as 240VAC 6 Brultech Research Inc www brultech com Brultech Research Inc BRULTECH a mmm Pre Plan the Installation A WARNING GEM Mounting Location NEVER Install the GREENEYE MONITOR GEM unit inside the Electrical Panel Determine the best mounting location for the GEM taking into consideration the length of the CT leads Some CT models have longer leads than others The two large main panel CTs such as SPLIT 100 or SPLIT 200 have longer leads than Micro CTs do so it may be preferable to locate the GEM at the opposite end of the panel feed from where the large CTs are installed See Figure 9 Main Panel Main Panel d Si Wellech hl echh y ZO Ge
8. ce comes with two RS 232 ports The RS 232 port may be used to connect directly to an automation system a Serial to Ethernet device such as EtherPort or to a serial to USB adaptor Either of these ports may be used at the main communication gateway or simply to configure the GEM the GEM s optional WiFi module or the GEM s optional XBee module The GEM is capable of being put in Bridge Mode which causes Com1 and Com2 to be linked together so that the RS 232 port can talk directly to a module on the opposite port Connection to the RS 232 port is accomplished via terminal blocks 8 in the layout section Typically only one RS 232 port would be used therefore there is only one common GND connection available See Figure 12 Figure 12 8 Brultech Research Inc www brultech com Brultech Research inc 9 BRUPTECH Channel Assignment Worksheet 120V 240V 240V 1 CT 2 CTs CT Model Breaker Breaker Number Amps Load Description GEM 25 26 27 30 31 OIH INIMII NANJ OIN a Be ve B n le Bag ken DO O N www brultech com Brultech Research Inc
9. e to the electrical 1 Wire Bus panel for best accuracy 4 This is not a USB connection This mini USB jack may be used as an alternate power supply or PT signal jack 5VDC 3 3VDC Supply Access O Power SupplyieSVDC 5 The 5VDC power supply plugs into an outlet The power J K lt Bh USB Jack used for optional 5VDC Power PT combined supply 12VAC 333mVAC 50 60 Hz Pulse Counter Channel 3 amp 4 2 8 The RS 232 communication terminal block Pulse Counter Channel 1 amp 2 supply cable then plugs into the barrel jack 6 This auxiliary terminal block provides 3 3VDC or 5VDC supply for auxiliary devices 7 The 1 Wire bus connection for temperature sensors 13 status LEDs The System LED left provides GEM operational status while the Communication LED right shows the status of the communication module Push Button Switch Figure 1 Safety All safety rules described below must be obeyed Please read carefully before proceeding with the installation of the GreenEye Monitor and associated current transformer Brultech Research Inc assumes no liability for failure to comply with the safety guidelines described below The GREENEYE MONITOR GEM operates as a Class II low voltage device This requires that all external connected signals be low voltage TAL lt 50V and provided by Class Il approved power supply and sensors S WARNING All of our power
10. he TAA GEM comply with the following 1 Voltage from external signal must be Low Voltage less than 50V and galvanic isolated from line voltages 2 All connections to the GEM must be Class II double insulated 3 The current transformer CT potential transformer PT and power supply must be UL c certified when used in USA or Canada 4 The GEM device must NOT be installed inside an electrical panel possessing line voltages Installation of the GreenEye Monitor must comply with all local codes and must be installed by qualified personnel In the Box Potential Transformer PT 5 VDC Power Supply GreenEye Monitor Brultech Research Inc www brultech com Brultech Research Inc 2 Current ag GEM Connection Layout pepo oe Moduls 1 onnection 7 qn n 32 channels gien LED The outlined section in the 1 circle of Figure 1 shows where the current transformer leads connect Refer to Current Transformers CT section for more information Ethernet Status LEDs ans B 2 The two terminal blocks is where connection from a pulse signal connects See Pulse Count Inputs chapter for more information Wifi Module Mode GEM W only 3 Is the 3 5mm jack for connection to the Potential RS 232 Gel 8 Transformer PT The PT senses the line voltage and should be RS 232 Com1 e g e naapa plugged into a receptacle as near as possibl
11. rallel must all be the same CT model Use light gauge lamp cord or similar to create a short extension lead see Figure 7 right side diagram This enables connecting multiple CT leads together using a wire nut Brultech Research Inc www brultech com Brultech Research Inc 6 ESCH i Three Type B CTs connected to a 120V 120V split phase panel or load Based on the polarity of the example below all CTs installed on Line1 Three Type A CTs connected to a 120V 120V split phase panel or load circuits must face one direction and the CTs on Line2 must face the opposite direction Based on the polarity of the example below all CTs installed on Line1 circuits must face one direction and the CTs on Line2 must face the opposite direction CT Leads CT Leads Use wire nuts to connect CTs in parallel CT Leads Ne wl CT Leads Wire Nuts vi CT Leads CT Leads Extension Leads Be ra nN we 4 3 2 1 Figure 7 For more information please refer to the latest manual www brultech com software CT Terminal Block The GEM uses spring loaded terminal blocks The wire to be inserted into the terminal block must be between 18AWG to 26AWG and stripped to a minimum of 10mm If two wires must share a single terminal then the maximum gauge is 24AWG Figure 8 shows the procedure for connecting the CT leads to the terminal block 0 4 Wire S
12. supplies are UL CSA or UL c approved for use in USA and Canada Most of our current transformers CT are UL c listed No direct line connections to the GEM are allowed All signals must be galvanic isolated from the power line Read All Of The Safety Rules Before Installing Never install the GEM inside an electrical panel A separate low voltage panel may be used if required The GREENEYE MONITOR GEM installation requires the installation of current transformers CT installed inside the electrical service panel This portion of the installation MUST be performed by a qualified electrician or individual The installer must follow all local safety codes and use proper safety practices and equipment The qualified installer must be aware that main panels may still contain dangerous voltage levels even though the main breaker is in the OFF position Cont d Next Page Brultech Research Inc www brultech com Brultech Research Inc 3 USECH The following rules MUST be obeyed e Any work performed inside the electrical panel must be done by an electrician or qualified individual This individual will be familiar with the local electrical code and perform the installation accordingly e NEVER install the GreenEye Monitor GEM inside the electrical panel Only low voltage 12VAC or less galvanic isolated connections are to be made to the GREENEYE MONITOR GEM terminals e The current transformer CT leads must
13. tor sensed current K gt L The CT lead is located on one side Ba of the CT housing K Source Use this as the CT 1 Load identifier for CT orientation CT Lead purposes CTs Figure 3 Figure 4 For single CT connection the CT lead color does not matter as long as this is not a 3 phase installation For example if a CT connects to terminals 2 amp 3 the black lead can connect to terminal 2 or 3 and the white lead to the other terminal Type ACT Nws Single CT ch M L ZP Type B CT Single CT Type A CT Connection Type A Terminal CT Block Type A CT Connection For single or split phase only Dual CT Figure 5 Type B CT Connection Type B Terminal CT Block 3 rn E ail bi Gel Mu O04 E R 2 O 1 gt Pu Led Dual CT Figure 6 4 Brultech Research Inc 4 www brultech com Brultech Research Inc 5 ESCH i Connecting Two CTs on a Single Channel North American residential electric services are 120V 240V split phase systems If a 240V load is to be monitored you should determine if the load contains a neutral connection If it does then both L1 and L2 lines will require a CT since the current through L1 may not necessarily be the same as L2 When connecting the leads of two CTs to a single channel the sum of both CT currents will add or subtract
Download Pdf Manuals
Related Search