Manual - Gopal
Contents
1. 17 3 5 Noise Caused By Magnetic Loops 17 3 6 Noise Caused By Ground LOOpS 17 4 DIFFERENT MODE OF TESTING 18 4 1 Testing Instrumentation Setup 18 4 2 Wiring Mode 18 4 3 Hardware Connections 18 4 3 1 1 Phase 2 Wire System 18 4 3 2 2 Phase 3 Wire System 19 5 GPPM WITH COMPUTER INTERFACE 0 00 0 0 0 e0senensenensene 20 5 1 Shakehand With Computer 20 5 2 Connection With Computer 20 5 3 Communication Parameters 20 5 4 Minimum System Requirement 20 5 5 Gopal Data Transfer Tool 20 5 6 Installation of Software2. 13 2 6 1 Set Mode 13 2 6 2 Set Average Sample 13 2 6 3 Set 7Seg Parameter 13 2 6 4 Set 7Seg Intensity 14 2 6 5 Set LCD Default Page 14 2 6 6 Set RPM Divisor 14 2 6 7 Set Pole 15 2 6 8 Enable RPM SLIP Mode 15 2 6 9 Default Setting 15 2 6 10 Set CT Ratio for model PA 140 only 16 2 6 11 Set PT Ratio for model PA 140 only 16 3 PROTECTING YOUR GPPM er enna nnnnennnnnnnnnnne 17 3 1 Transient Overload 17 3 2 Current Overload 17 3 3 Surge Protection 17 3 4 Circuit Breakers
3. 20 5 7 How does Gopal Data Transfer Tool Works 20 6 FREQUENTLY ASKED QUESTIONS 0 2 0 0 0 0 0n 0e0 0 0 21 Figure 1 System Configuration 3 Figure 2 Front Panel of GPPM 6 Figure 3 Rear Panel of GPPM 7 Figure 4 Connection Diagram for Single Phase Two Wire System 18 Figure 5 Connection Diagram for Two Phase Three Wire System 19 PREFACE PURPOSE OF THIS MANUAL This manual contains mostofthe information required for proper installation and general use ofthe GOPAL make Precision Power Meter To achieve maximum capability and to ensure proper use of the instrument please read this manual deeply before operating the Instrument Keep this manual in a safe place for quick reference whenever a question should arise WHO SHOULD USE THIS MANUAL This manual is intended for those operators who are planning to use GOPAL make Precision Power Meter for power measurement purpose either as a stand alone instrument or in conjunction with Gopal Data Transfer Tool SAFETY PRECAUTIONS A 1 Make sure thatthere must be presence of proper ground in your power supply system 2 Make sure that GOPAL Precision Power Meter is earth grounde
4. Liquid Crystal Display High quality easy to read four lines with 20 alphanumeric character display It displays all measured parameters of GPPM Seven Segment Display Seven digits high glow type Red display for long distance view which shows any one parameters ata time Four Extra Inputs 10V DC To measure any parameter which is of 10V DC like Flow Pressure Temperature DC Volt etc RPM SLIP RPM Input 5Volt To measure RPM of Motor or Slip RPM of Submersible pump Inbuilt Memory M 125 lt has memory which can store upto 125 test results of all parameters Measurement Continuous Input power of the Instrument AC 230V 50Hz 110V 60Hz on request Isolation 1000 Vrms input to Earth Special Features 1 Upto potential difference of 1000V between input terminal to ground you can directly measure current upto specified range 2 It can be used as a Table top or Rack mounting 1 4 APPLICATIONS 1 2 meter PF meter etc 3 Testing of single phase amp three phase AC transformer and motor Testing calibration of Instruments like Energy meter Volt meter Ammeter Watt Testing of Household appliances such as Heaters Microwave Ovens TV Blenders Mixers Lamps Ballasts Fans Air Conditioners Refrigerators etc 1 5 DESCRIPTION 1 GPPM is a user friendly instrument and ideal for numerous power measurement applications 2 The instrumen
5. 600 8 Peak value 150A for PA 600 15A for Maximum instantaneous 195V for PA 140 PA 600 8A 8 9A for PA 140 allowed input RMS value 1 0 kV for PA 600 amp RMS value 100A for PA 600 10A for 1second duration 230V for PA 140 PA 600 8A 8 6A for PA 140 Whichever is less Whichever is less Peak value 850V for PA 600 amp Peak value 120A for PA 600 12A for 200V for PA 140 PA 600 8A amp 7A for PA 140 Maximum continuous RMS value 600V for PA 600 amp RMS value 80A for PA 600 8A for allowed input 140V for PA 140 PA 600 8A 8 5A for PA 140 Whichever is less Whichever is less Banana socket Direct input large binding Post with wire fit type 1 4 BSW copper stud with insulated nut Input terminal type EXTRA INPUT SPECIFICATIONS M1 M2 M3 M4 RPM Input L type terminal at rear side Accuracy Remark input ype 0 25 FSD Maximum Input Withstand up to 20V peak RPM CARD Input Compatible with Gopal make rpm amp slip card for measurement of motor amp pump rpm Note External inputs are useful for any converter connectivity and usefu To measure Temperature Torque Flow Pressure etc CALCULATION FUNCTIONS V1 V3 V1 Volt V V V1 V2 2 V2 V3 V2 V3 V3 V3 V V1 V2 V3 3 V V1 V2 V3 3 E TAE Active Power P P P1 P2 P P1 P2 P3 Power Factor PF PF PF1 PF2 2 PF PF1 PF2 PF3 3 S1 V1xl11 S1 V1 x11 Apparent Power S S2 V2 x 12 S2 V2xI2 S S1 S2 S3 S S1 S2 S3 V3 x 13 Reactive Power Q Q S P
6. at input of V1 to Neutral Frequency Measurements Note Specifications are subject to change without prior notice for further improvement of products 1 8 FRONT PANEL A B CDE F PRECISION POWER METER S RQPONMLK Figure 2 ENTTETE 7 777 Te mao Fish Buon MP to me edad Push Button IMP to measure I Irect Imean Ipeak Icf and Iff J 1 9 REAR PANEL o a 5 o lt W VUTSRQPO NML KJ I Figure 3 e Common Ground input or 10V De meter MIMZMoN4 Co Banana irninalio Vota Press TO e Banana terminaro mp Nora Pasa E Banana terminaro moot Neural ofPhased 4 Banana terminal iovotinputofPheses 1 bang post stud ofAmmeterto be commento Load ot Phases Tic Binding post stud of Ammetero be connect to Load of Phase m Binding post stud orAmmeterto be connect to Load or Praet u Endina post sud of Ammeterto be comecito Phase Y 0 imputar exert meter MA appieabie maximum votege 10V DC e imputar external meter m3 appicabe maximum votage 10V DC a mpurorextemal meter M2 appicable maximum voltage 10v DC C r Mout of external meter Mt appicanie maximum votage 10V DO s Glock Pulse input of eternal Gopal Make RPM Card Common Ground inputoutput of external Gopal Make RPM Cad KON ENSPE SEE E o CCS 2 FUNCTIONAL DESCRIPTION 2 1 DISPLAY GUIDE vivava TueRM
7. during an over current condition 2 The voltage sense lines should be connected at the line side of the circuit breaker to prevent inductive transients from entering into the GPPM as the circuit breaker opens 3 Make sure that connections from the circuit breaker to the load are heavy conductors and as short as possible recommended MCB 80 Amp 3 5 NOISE CAUSED BY MAGNETIC LOOPS If you are taking measurements near magnetic fields you should take necessary precautions to avoid inducing voltages in the measurement connections You should be especially careful when working near conductors carrying large currents Use twisted pair connections to the GPPM if possible to reduce the noise pickup loop area or dress the test leads as close together as possible Loose or vibrating test leads will also induce error voltage Make sure that your test leads are tied down securely when operating near magnetic fields Whenever possible use magnetic shielded material or physical separation to reduce problem in magnetic field sources 3 6 NOISE CAUSED BY GROUND LOOPS When measuring voltage in circuit where the GPPM and the device under test are both referenced to common earth ground a ground loop is formed Any voltage difference between the two ground reference points Vground causes the current to flow through the measurement leads This cause errors such as noise and offset voltage usually power line related which are added to the measured vo
8. mode function or you can proceed further for another setting 6 In this way you can set Pole 7 Once Pole is set then this setting will be stored in the Instrument 2 6 8 Enable RPM SLIP Mode Q What does it mean by Enable RPM SLIP Mode Ans First think what do you want to enable RPM or SLIP mode If you want to measure RPM of motor then you have to enable RPM mode and if you want to measure SLIP RPM of Submersible pump then you will have to enable Slip mode Related parameter will be shown in EX M page as per setting Q Ans 1 First press MODE button to enter MODE function 2 Now you can see this menu by pressing MODE button seven times or SLIP button once 3 If RPM mode is set in the Instrument then LCD shows Enable SLIP Mode and if SLIPmodeis setthen LCD shows Enable RPM Mode 4 Press ENTR to change and store the required mode 5 Press ESC to exit mode function or proceed further for another setting 6 In this way you can set RPM SLIP mode in the Instrument 7 Once this mode is set then this setting will remain in the Instrument Note You must have to connect Gopal Make SLIP module between Slip coil and Slip input terminal provided 5V Gnd In 5V at rear panel of GPPM to measure SLIP RPM 2 6 9 Default Setting Q What does it mean by Default Setting Ans Default setting means default factory setting of all mode functions This mode will set all functions as per factory de
9. so many AC machines on this GPPM and wantto store all measuring data in storage memory automatically then What to do for that Enable Incremental save and give starting address from which you wantto start storing After setting it once whenever you hold measurement your data will be stored at particular address one by one You don t have to do the process of saving them individually After storing into the memory a counter will automatically be incremented by one so every time data will be stored in next address When whole memory is filled up by data a message Memory Full will be displayed on LCD So this mode is useful for bulk testing 11 Procedure to select address in Incremental save mode and Enable Disable Incremental Save Mode 1 Press HLD or HLDA button so measurement will get hold after few seconds 2 Now you can see message hld on 7segment LED Display 3 Press Mode button three times so you see Incremental Save amp Select Address xxx on LCD 4 Now set appropriate address no From 1 to 125 from whichever memory address you want to save the parameters by using four arrow buttons and then press ENTR 5 After setting it press MODE so you can see a message on LCD Incremental save Enable or Incremental save Disable If you see Incremental save Enable then press ENTR so Incremental save will be enabled If you see Incremental save Disable Then don t press ENTR ot
10. 0 AT 25 C 5 C AFTER 30 MIN WARM UP GENERAL SPECIFICATIONS Warm up ime Operating temperature 20 C to 45 C Operating humidity 20 to 75 RH non condensation Storage temperature 25 C to 50 C 40MQ or higher at 600V all of the following area Voltage input terminal to case Current input terminal to case Voltage input terminal to Current input terminal Case to power supply Insulation resistance 2000V for 1 min At 50 Hz across all of the following area Voltage input terminal to case Current input terminal to case Voltage input terminal to Current input terminal Power supply 210V 250V 50Hz Insulation withstand voltage 280 X 260 X 130 mm I x b x h including projection Panel mounting cut out size 280 x 115mm Weight 3 5kg approximate INPUT SPECIFICATIONS Parameter Voltage Current Input type Resistance voltage divider Current to voltage converter 600Vrms for PA 600 amp 80Arms for PA 600 8Arms for Rated Values 140Vrms for PA 140 PA 600 8A amp 5A for PA 140 Measuring instrument loss Input resistance Approx 2M 9 Approx Tm Peak value 1 5 kV for PA 600 amp Peak value 200A for PA 600 20A for Maximum Instantaneous 350 V for PA 140 PA 600 8A amp 12A for PA 140 allowed input RMS value 1 1 kV for PA 600 amp RMS value 150A for PA 600 15A for 1cycle 30ms duration 250 V for PA 140 PA 600 8A amp 9A for PA 140 Whichever is less Whichever is less Peak value 1 4 kV for PA
11. 0n 0 0 0nenenenensennnnnenenene 8 2 1 Display Guide 8 2 2 Function of Push Button Switches 8 2 3 Working with GPPIM 9 2 4 Parameters on LCD 9 2 5 Brief Explanation of some Important Push Buttons 11 2 5 1 HLDA 11 2 5 2 HLD 11 2 5 2 1 Save in Storage Memory 11 2 5 2 2 Read from Storage Memory 11 2 5 2 3 Incremental Save In Storage Memory 11 2 5 2 4 Erase all Memory in 2 Minutes 12 2 5 3 FORWARD and BACKWARD 12 2 5 4 MODE 12 2 5 4 1 How to Enter the mode function 12 2 5 4 2 How to Exit the mode function 12 2 6 Different Types Of Menu In Mode Function
12. 3 Set CT Ratio by use of four arrow buttons 4 Press ENTR to store CT Ratio 5 Press ESC to exit from mode function or you can proceed further for another setting 6 In this way you can set CT Ratio 7 Once this ratio is set then this setting will be stored in the Instrument How can you Set CT Ratio 2 6 11 Set PT Ratio for model PA 140 only Q What does it mean by Set PT Ratio and how can it be useful to the user Ans This function is useful for testing of AC machines like Power Transformer at high voltage and current like 11 KV and 200Amp PA 140 is having only 140V capacity so if user wants to test 11KV then what to do He has to use appropriate PT for that and have to set appropriate PT Ratio in GPPM according to primary and secondary turns of PT Q Ans 1 First press MODE button to enter MODE function 2 Now you can see this menu after pressing MODE switch ten times 3 Set PT Ratio by use of four arrow buttons 4 Press ENTR to save PT Ratio 5 Press ESC to exit from mode function or proceed further for another setting 6 In this way you can set PT Ratio 7 Once this ratio is set then this setting will be storerd in the Instrument How can you Set PT Ratio 16 3 PROTECTING YOUR GPPM Before GPPM is used for power measurement guidelines to prevent transient overload current overload surge protection and circuit breakers must be followed 3 1 TRANSIENTOVERLOAD 1 Connect app
13. GOPAL OPERATION MANUAL 3 PHASE PRECISION POWER METER PA 600 Gopal Electronics TABLE OF CONTENTS OE 1 Purpose of this Manual 1 Who should use this Manual 1 Safety Precautions 1 Manual Organization 1 1 INTRODUCTION cer mmm 2 1 1 Unpacking Your GPPM 2 1 2 Use of all Items Provided With GPPIM 2 1 3 FeatureS 2 1 4 Applications 2 1 5 Description 3 1 6 System Configuration 3 1 7 Specifications of Model PA 600 4 1 8 Front Panel 6 1 9 Rear Panel ilill 7 2 FUNCTIONAL DESCRIPTION 0 0 0n
14. Line 3 M3 8 F Extra Meter3 and Frequency of V1 Line 4 M4 8 Pole Extra meter M4 and Slip Pole Page 14 Line 1 Status Page Line 2 Name of 7seg parameter 8 sample average Line 3 Status of Intensity of 7 Seg Line 4 Wiring Connection mode amp Status of meas On HLDA HLD 10 2 5 BRIEF EXPLANATION OF SOME IMPORTANT PUSH BUTTONS 2 5 1 HLDA It is used to hold a processor after taking measurement of all parameters By use of this button you can hold measurement save and read all parameters inside storage memory Press this button again to release hold 2 5 2 HLD Itis used to hold a processor for instant By use of this button you can hold the measurement save and read all parameters in storage memory Press this button again to release hold 2 5 2 1 SAVE IN STORAGE MEMORY Q Ans 1 Press HLD or HLDA button so measurement will get hold after few seconds 2 Now you can see a message hid on 7segment LED Display 3 Press MODE Button so you can see Save Data amp Select Address XXX on LCD 4 Setappropriate address No From 1 to 125 at whichever memory address you want to save all parameters by using four arrow buttons and then press ENTR to save them 5 After saving in memory it shows a message on LCD Data has been saved 6 After some moments you can see another message Read Data and Select Address XXX 7 lf you want to read any data then proc
15. Mean Volt V mean 1 11072 x Voltage rectified Crest Factor cf cf Peak Value RMS Value Form Factor ff ff RMS Value Average Value Notes 1 If the input contains distorted wave the calculation based parameters may not match to those of other measuring instruments based on different measuring principles 2 If either voltage or current falls to 10 of the range rating or less then the apparent Power S power factor PF and reactive power Q may be displayed with errors 3 No sign of power factor is displayed when current lags the voltage and negative Sign is displayed when current leads the voltage MEASUREMENT FUNCTIONS Parameter Voltage Current Active power System Digital sampling Sum of average method Conditions Accuracy Frequency range Accuracy within one year after calibration Temperature 25 5 C Humidity 30 75 RH 30 Hz to 44 Hz 0 2 of rdg 0 2 of rng Input waveform Sine wave power 45 Hzto 65 Hz 0 1 of rdg 0 1 of rng factor 1 0 66 Hz to 800 Hz 0 2 of rdg 0 2 of rng Display digits 5 6 digits Peak Mean above x2 AVG 8 sample mode Additional power factor effecton at 50Hz 9 035 or time delay errors 2 5 uS active power measurement Effective input range 10 100 of Voltage 1 100 current range rating Display updating value 1 2 3 4 5 6 7 8 seconds selectable by sample Average menu Conditions Input gt 30 of V1 from 30 to 800Hz Accuracy 0 1 Frequency measured
16. Now you can see first menu Set Mode on LCD screen 3 You can go to another function menu by pressing mode button again and again 4 All scroll menus in mode function are described here under 1 Set Mode Set Average Sample Set 7Seg Parameter Set 7Seg Intensity Set LCD Default Page Set RPM Set Pole Enable RPM SLIP Mode Default Setting Set CT Ratio Only for model PA 140 Set PT Ratio Only for model PA 140 Oe PP PRAGO IN 2 5 4 2 HOW TO EXIT THE MODE FUNCTION Ans Ifyou wish to exit from any where in the mode function then simply press ESC Button 12 which leads you to measurement mode and you will see parameters related to LCD Default page on LCD screen 2 6 DIFFERENT TYPES OF MENU IN MODE FUNCTION 2 6 11 Set Mode Q What does it mean by Set Mode and how can it be useful to the user Ans GPPM is designed in such a way that users can do testing by three different methods as per their wish This is the function which is useful to set wiring connection for different test methodin the Instrument Atthe same time connection must be made as per selected wiring mode You can take reference from connection diagrams to do connection Three types of wiring modes are given below Users can set any of the following wiring mode as per their requirement of testing 1 4 Wire Mode for phase to neutral measurement 2 3 Wire Mode for two watt meter type measurement 3 V 1 73205 Mode fo
17. PF1 Active Power and Power factor of phase Line 2 P2 amp PF2 Active Power and Power factor of phase2 Line 3 P3 amp PF3 Active Power and Power factor of phase3 Line 4 P amp PF Total Active Power amp Average PF of all phases Page 3 Line 1 S1 8 Q1 Apparent and Reactive power of phase Line 2 S2 8 Q2 Apparent and Reactive power of phase2 Line 3 S3 amp Q3 Apparent and Reactive power of phase3 Line 4 S amp Q Total Apparent amp Reactive power of all phases Page 4 Line 1 V1 8 cf RMS Volt and Volt Crest Factor of phase Line 2 mean amp ff Mean Volt and Volt Form Factor of phase Line 3 rect amp F Rectified Volt and Freq of V1 Line 4 Peak Volt of phase Page 5 Line 1 V2 amp cf RMS Volt and Volt Crest Factor of phase2 Line 2 mean amp ff Mean Volt and Volt Form Factor of phase2 Line 3 rect Rectified Volt of phase2 Line 4 Peak Volt of phase2 Page 6 Line 1 V3 amp cf RMS Volt and Crest Factor of phase 3 Line 2 mean amp ff Mean Volt and Form Factor of phase 3 Line 3 rect Rectified Volt of phase 3 Line 4 Peak Volt of phase 3 Page 7 Line 1 V amp cf RMS Volt and Volt Crest Factor Average Line 2 mean 4 ff Mean Volt and Volt Form Factor Average Line 3 rect 8 F Rectified Volt Average 8 Freq of V1 Line 4 Peak Volt Average E Page 8 Line 1 11 8 cf RMS Current amp Current C
18. SACVON Rect Recifes P1P2P3 Watt Active Power FomFado PFIPF2PRO PowerFacior mo Exrameteri 515253 Apparent Power ma Bdrameterz atazQs Reactive Power ms Exrameterd E Frequency ofv1_ m Exrametra C v Average Volt Rem Revolution per minute C r AveragoCurem Reme RPMDiisor e Total att is Percentage Sip pr Average Power Factor Pole Poleotmotor s Total Apparent Power int Intensity of 7seg Display a rota Reactive Power No measurement Low 2 1 FUNCTION OF PUSH BUTTON SWITCHES MODE To Enter Mode Function HLDA To measure all parameters and hold after storing in RAM V HD To hold the measurement PPF o display Active P1 P2 P3 P and PAPP Sa o display 51 52 53 S and Q1 2 03 Q IMP To display I Imean Irect Ipeak lof If To display incremented parameter in 7segLED To display decremented parameter in 7seg LED To increment Page tobe displayed __ To Decrement Page to be displayed AVG To set Sample Average menu SSS SGP To set parameter to be displayed in 7seg display 7861 To set Intensity of 7Segment LED Display LCDF To set default page to be displayed in LCD RPMS TosetDivisorofRPM SSCS SLIP To enable disable RPM SLIP mode To shift cursor forward for setting of any parameter of related menu To shift cursor backward for setting of any param
19. WO WATT METER METHOD 1 ItMeasures 2 phase power 2 Utilizes phase 1 and phase 2 for measurement 3 Utilizes phase 3 as a common wire 4 Allparameters related to phase 3 becomes zero 2 Phase 3 Wire Mode 3Phase source Max applicable Voltage N Phase lt 600V AC or 800V Peak e e 060000000000 RS 232 Connection Max applicable Current per Phase lt 80AAC or 110A Peak Load Figure 5 19 5 GPPM WITH COMPUTER INTERFACE 5 1 SHAKEHAND WITH COMPUTER Using the GPPM with a computer enables the unit to perform at its full capacity GPPM is equipped with RS 232 serial interface Pin configuration of Cable connector is given as below End1 End 2 Pin2 RX Pin2 TX RX Pin3 TX Pin3 RX TX PC Pin5 GND Pin5 GND Ground 5 2 CONNECTION WITH COMPUTER 1 Connect RS 232 Interface cable from GPPM to Computer at serial communication Port 2 Connect male type connector of cable to GPPM and female type connector to Computer 5 3 COMMUNICATION PARAMETERS No parity bit 8 data bit 1 stop bit Baud rate 115200 bps Free of cost one Demo software viz Gopal Data Transfer Tool is provided in CD with GPPM to communicate it with Computer Important Note Gopal Electronics doesn t take any responsibility for any erratic operation by use of this software is not liable for any u
20. What does it mean by Set RPM and how can it be useful to the user Ans This function is useful for RPM measurement in motor testing By this mode you can Set Divisor value for RPM meter Some times for high speed motor or some special types of motor user make some arrangement to sense rpm by use of geared wheel or proximity sensor etc So he has to set rpm divisor as per gear teeth to measure rpm very accurately 14 Q How can you Set RPM divisor Ans 1 First press MODE button to enter MODE function 2 You can see this menu by pressing MODE button five times or RPMS button once 3 Set RPM by use of four arrow buttons 4 Press ENTR to save setting of RPM 5 Press ESC to exit mode function or proceed further for another setting 6 In this way you can set RPM 7 Once RPM divisor is set then this setting will remain in the Instrument 2 6 7 Set Pole Q What does it mean by Set Pole and how can it be useful to the user Ans Set pole means setting of no of Pole as per Pole of submersible pump A Value of Pole is used for testing of Slip RPM of Submersible pump This value is essential in calculation of Slip RPM Q Howcan you Set Pole Ans 1 First press MODE button to enter MODE function 2 Now you can see this menu by pressing MODE button six times or POLE button once 3 Set Pole value by pressing UP DOWN arrow buttons 4 Press ENTR to store setting of Pole 5 Press ESC to exit
21. d to ensure your personal safety and proper operation 3 Check line voltage it must be within the limit of 210V to 250V before operating the instrument 4 Make sure that any machine under test is equipped with appropriate safety guards 5 Don t turn the Instrument on and off instantly It is a micro controller based instrument and it may affect to the performance of the Instrument 6 Warmup the Instrument for at least 30 minutes to get proper measurement amp specified accuracy 7 Make proper wiring before use Wiring diagrams are given on the top of Instrument NOTE 1 While every precaution has been exercised in compilation of this document to ensure the accuracy of its contents Gopal Electronics assumes no responsibility for errors or omissions Additionally no liability is assumed for any damages that may be the result of the use of the information contained within this Publication 2 Word GPPM is used for Gopal Precision Power Meter throughout this manual MANUAL ORGANIZATION This section gives a brief overview of the structure of the manual and the information it contains The structure of the manual is as follows Chapter 1 Introduction Brief Introduction about GPPM it s accessories and technical data sheet which describes it s electrical characteristics Chapter 2 Functional Description Description of all parts of GPPM and their functional Use Chapter 3 Protecting Your GPPM How to
22. e software in separate phase which you can see 6 Enter address of required parameters for Excel sheet 7 Browse File in the Text Box of File Path and select appropriate sheet of the Excel file 8 Press HOLD then press send button so all selected parameters will go to browsed sheet 9 In this way you can use this software for your easiness to create report 20 6 FREQUENTLY ASKED QUESTIONS Q 1 When we apply voltage and current it shows Volts Currents and P2 correct but show P1 and P3 incorrectly Ans Check connection of Voltage and Current You must connect V1 A1 V2 A2 V3 A3 otherwise this problem will occur Q 2 We have made connection of three phases to GPPM and switch on supply but three phase variac is at its lowest position means almost OV Position although V1 V2 V3 in GPPM shows some Volt Here we checked it by multi meter there is no voltage between any two phases but between phase and neutral it shows some volts and we haven t connected Neutral Ans There is a possibility in your Variac that there is no connection of neutral at center tapping so connect neutral at its center tapping and properly earth its body Q 3 Connected GPPM with cable through RS 232 opened Data Transfer Tool and clicked onconnect but it didn t get any data from GPPM Ans Check RS 232 cable it may be damaged There are two connectors one is male and another is female connector Check continuity of the pin First connecto
23. eed further other wise press ESC button to exit How can you save parameters Inside Storage Memory in Hold condition 2 5 2 2 READ FROM STORAGE MEMORY Q How can you read parameters from Storage Memory in Hold condition Ans 1 Press HLD or HLDA button so measurement will get hold after few seconds 2 Now you can see a message hld on 7segment LED Display 3 Press MODE button two times so you can see Read Data amp Select Address XXX on LCD 4 Now set appropriate address No From 1 to 125 from whichever memory address you want to read all the parameters by using four arrow buttons and then press ENTR to read them 5 After reading it displays a message on LCD Data has been read At the same time data will be transferred to PC ifthe software Data transfertool is opened and RS 232 wire is connected to PC 6 After few minutes you can see another message Incremental Save and Select Address XXX 7 Ifyou want to set Incremental save then proceed further other wise press ESC to exit 2 5 2 3 INCREMENTAL SAVE IN STORAGE MEMORY Q What does it mean by Incremental Save Mode it s use and how can you set incremental save mode and enable or disable it Ans Itis a mode in which you can set starting address of storing data in storage memory You can enable or disable Incremental save mode after setting address Usefulness of Incremental Save Enable If you wish to take measurement of
24. ent LED display as per their wish Q Ans 1 First press MODE button to enter the MODE function 2 You can see this menu by pressing MODE button three times or 7SGI button once 3 Select any of three Intensity level i e High Med or Low by using UP DOWN arrow Buttons 4 Press ENTR to save selected 7 Segment Intensity 5 Press ESC to exit from mode function or you can proceed further for another setting 6 In this way you can set 7segment Intensity 7 Once this setting is set then this setting will be stored in the Instrument 2 6 5 Set LCD Default Page Q What does it mean by Set LCD Default Page and how can it be useful to the user Ans By this mode user can set a page which is most important to see on LCD and after selecting it he will have this page on LCD whenever Instrument Power supply gets on or by pressing PAGE Button Q Ans 1 First press MODE button to enter the MODE function 2 Now you can see this menu by pressing MODE button four times or LCDP button once 3 Select any one page by using UP 8 DOWN arrow buttons 4 Press ENTR to save selected page as a Default page for LCD 5 Press ESC to exit from mode function or you can proceed further for another setting 6 In this way you can set LCD Default Page 7 Once this setting is set then this setting will be stored in the Instrument How can you Set 7seg Intensity How can you Set LCD Default Page 2 6 6 Set RPM Q
25. eter of related menu ENTR To save setting which you have set To display V Vmean Vrect Vpeak Vcf Vff F 23 WORKING WITH GPPM When you switch ON the Instrument set up process takes apprx 1 min After that it shows message on LCD as shown in adjacent figure After few seconds display will become blank Now measurement gets start related to parameters of LCD Default Page and LCD shows parameter of that page where as 7seg LED display shows parameter which has been set for it 2 4 PARAMETERS ON LCD 1 You can see almost all useful parameters like V I P PF S Q F in Page 1 2 3 and12 Extra parameters like M1 M2 M3 M4 RPM Slip RPM F in Page 13 and other parameters like Mean Rect Peak cf ff F of Volt and current in Page 4 5 6 7 8 9 10 11 At last you can see status of some setting in Page 14 called Status Page 2 As the measurement starts you can see a page which has been set in menu of Set LCD as Default Page By default Page 12 has been setin factory default setting 3 You can see all pages one by one by pressing Up and Down arrow Button 4 You can see any parameter one by one in 7seg LED by pressing Forward and Backward Button Page 1 Line 1 V1 amp 11 RMS Volt and Current of phase1 Line 2 V2 amp 12 RMS Volt and Current of phase2 Line 3 V3 13 RMS Volt and Current of phase3 Line 4 V 8 1 Average of RMS Volt and Current of all phases Page 2 Line 1 P1 amp
26. fault value which are given below 1 Wire connection mode 4 Wire mode 2 Average Sample 8 How can you Enable RPM SLIP mode 15 3 7Seg Parameter 04 V 4 7Seg Intensity High 5 LCD Default Page No 12 in the System 6 RPM Divisor RPM 0001 7 Pole 2 Pole 8 RPMmodeis enabled 9 CT Ratio 1 00 Only for model PA 140 10 PT Ratio 1 00 Only for model PA 140 Q How can you do Default Setting Ans 1 First press MODE button to enter MODE function 2 Now you can see this menu by pressing MODE button eight times or by pressing DSET button once 3 Press ENTR to make default setting 4 Press ESC to exit mode function or you can proceed further for another setting 5 In this way you can do default setting 6 Once this mode is set then this setting will be stored in the Instrument 2 6 10 Set CT Ratio for model PA 140 only Q What does it mean by Set CT Ratio and how can it be useful to the user Ans This function is useful for testing of AC machines like Power Transformer at high voltage and current like 11 KV and 200Amp PA 140 is having only 5A current capacity so if user wants to test 100 amp current then what to do He has to use appropriate CT for that and has to set CT ratio in GPPM according to primary and secondary turns of CT Q Ans 1 First press MODE button to enter MODE function 2 Now you can see this menu by pressing MODE button nine times
27. herwise it will disable Incremental save function 6 Ifyou want to do any other function then proceed further other wise press ESC to exit 2 5 2 4 Erase all Memory in 2 Minutes Q What does it mean by Erase all memory and procedure to perform this function Ans Itis a function by which you can erase complete storage memory If you want to erase whole memory then by this function you can doit Procedure to perform this function 1 Press HLD button so measurement will get hold after few seconds 2 Now you can see message hld on 7segment LED Display 3 Press Mode button five times so you can see Erase all Memory in 2 Minutes on LCD 4 Now press ENTR to erase all memory After pressing ENTR all storage memory will be erased in approximately two minutes 2 5 3 FORWARD AND BACKWARD In measurement mode these buttons are used to increase or decrease No of displaying 7segment parameter from 1st parameter to last parameter Forward is to increase and Backward is to decrease parameter no In mode function these buttons are used to shift cursor left and right in LCD 2 5 4 MODE This is used to get entry in the mode function In mode function we can do some important settings in the instrument as per our requirement In Hold condition you can goto Save Data amp Read Data mode by pressing MODE push button 2 5 4 1 HOWTO ENTER THE MODE FUNCTION Ans 1 Press mode button to enter mode function 2
28. le then this setting will be stored in the Instrument 2 6 3 Set7Seg Parameter Q What does it mean by Set 7Seg Parameter and how can it be useful to the user Ans By this mode user can set parameter no which will be displayed by 7segment LED Display which has been given as big long distance view display You can see any one of all the parameters in this display which has been measured by the Instrument Q Howcan you Set 7seg Parameter Ans 1 First press MODE button to enter MODE function 13 2 Now you can see this menu by pressing MODE switch two times or 7SGP Switch once 3 Select any one of all 7seg parameter by use of four arrow buttons 4 Press ENTR to save selected 7seg Parameter 5 Press ESC to exit from mode function or you can proceed further for another setting 6 ln this way you can set 7segment parameter 7 Once this mode is set then this setting will be stored in the Instrument Note If you want to set any 7segment parameter in measurement mode means when measurement is going on then you can set it by pressing FORWARD amp BACKWARD arrow button on temporary basis It will not be saved in ROM itis a temporary setting Every time when you switch on the Instrument you will see only the parameter which has been set by you in mode function 2 6 4 Set 7 Seg Intensity Q What does it mean by Set 7Seg Intensity and how can it be useful to the user Ans By this mode users can set Intensity of 7segm
29. ltage 17 4 DIFFERENT MODE OF TESTING 4 1 TESTING INSTRUMENTATION SETUP Before GPPM can be utilized it must be configured and connected to appropriate devices Which are intended for power measurement All connections must be proper 4 2 WIRING MODE The GPPM has the ability to support testing up to 3 phase so there are different ways in which the unit can be wired up 4 3 HARDWARE CONNECTIONS The wiring mode selections include 1 1 Phase 2 Wire mode Select 4 wire connection mode 2 2 Phase 3 Wire mode Select 3 wire connection mode 3 3 Phase 4 Wire mode Select 4 wire connection mode See Figure 1 for this mode 4 3 1 1 PHASE 2 WIRE SYSTEM Select 4 wire connection mode 1 Used for Measurementof1 phase power 2 Can be wired on any input channel most commonly used for single phase AC load applications 3 The following diagram shows connections for single phase two wire measurement Note Here V1 and Ph1 is used in connection just for explanation You can connect single phase Machine in any pair like V1 Ph1 V2 Ph2 V3 Ph3 1 Phase 2 Wire mode 1Phase source Max applicable Voltage N Phase J o 20000040 deoooncedge e RS 232 Connection Circuit breaker Max applicable Current per Phase Load Figure 4 18 4 3 2 2 PHASE 3 WIRE SYSTEM THREE WIRE CONNECTION MODE OR T
30. nexpected results which comes out by use of these free demo software 5 4 MINIMUM SYSTEM REQUIREMENT FOR THIS SOFTWARE 1 Operating system compatibility Windows 95 98 NT 2000 ME XP 2003 2 128 MB RAM 3 100 MB free space on hard Disk drive 4 Celeron or Pentium series processor with minimum speed of 850 MHz 5 5 GOPAL DATA TRANSFER TOOL A tool to communicate Instrument with computer If you have your own test report format in Excel and wish to get test results of GPPM in that Excel sheet then this is very useful Here you can send results of all testing parameters to your selected addresses of selected sheet in selected Excel file 5 6 INSTALLATION OF SOFTWARE 1 Insert CD of software Gopal Data Transfer Tool in CD drive Open CD amp select setup exe 2 Click at appropriate option which is given in software 3 Click on Finish and restart your computer 4 You will have software in folder of Data Transfer Tool in program files folder 5 Shortcut Gopal exe will also be created on desktop 5 7 HOW DOES GOPAL DATA TRANSFER TOOL WORKS 1 Click on Icon Gopal exe on Desktop of Computer 2 Click on Setting menu on menu bar in software if first time 3 Click on Port setting 8 select appropriate communication port at which communication cable is connected Select bit rate of 115200 4 Click on OK Button and then click on Connect menu on menu bar 5 All basic parameters comes in th
31. protect GPPM from damage Chapter 4 Different Mode of Testing Different wiring connection mode of testing Chapter 5 GPPM with computer How to establish communication between GPPM 8 Computer and how to read and save data in Memory card Chapter 6 Frequently Asked Questions Frequently asked questions about GPPM and its use 1 INTRODUCTION 1 1 UNPACKING YOUR GPPM Make sure that the carton contains following items 1 Precision Power Meter Main unit 1 5 User s Manual 1 2 AC Mains cord 1 6 Test Report 1 3 RS 232 Serial interface wire 7 Software CD 1 4 Current terminal nuts pre fitted 6 1 2 USE OF ALL ITEMS PROVIDED WITH GPPM 1 2 3 4 GPPMis used for measurement and testing of AC machines Main s cord is given to plug in GPPM to Auxiliary power supply RS 232 Cable is given to connect GPPM with computer for communication Nut set of 80A is provided to make permanent connection of 3 phase power supply to currentinput terminal of GPPM and power supply connection of a load 5 6 7 User s Manual is necessary as a guide for proper operation of GPPM TestReportis provided for reference A Software CD is provided with free demo software Data Transfer Tool in order to communicate GPPM with Computer 1 3 FEATURES Single Three Phase Capabilities For single 8 three phase power measurements Interface RS 232 serial interface Data Transfer Rate 115200 bps
32. r Second connector 2nd pin with 3rd pin 3rd pin with 2nd pin 5th pin with 5th pin If continuity is ok then there may be some fault in serial port of the computer If serial portis ok and your problem continues then contact to Gopal Electronics Q 4 From where can we purchase RS 232 cable Ans lt is standard RS 232 cable so you can purchase it from any local PC supplier Q 5 When we switch on GPPM is doesn t Turn on Ans Make sure that the power source you plugged in the Instrument is energized or not Ifit is not energized then energize it first After that if it does not turn On then check continuity of power Cable If continuity is ok and GPPM does not turn On yet then there may be some problem in GPPM so contact to Gopal Electronics 21 Gopal Electronics Plot 11 Part 3 Amarnath Estate Naroda Dehgam Road Post Naroda Ahmedabad 382330 Gujarat INDIA Phone 191 79 22820927 Fax 91 79 22819989 Email gopal gopalepstein com Web www gopalepstein com
33. r phase to neutral measurement and voltage channel will be multiplied by V3 Q How can you Set Wire Connection Mode Ans 1 First press MODE button to enter the MODE function 2 Now you can see this menu on LCD 3 Select any of three connection mode by using UP amp DOWN arrow buttons 4 Press ENTR to save your selected connection mode 5 Press ESC to exit from mode function or you can proceed further for another setting 6 In this way you can set connection mode 7 Once this mode is set then this setting will be stored in the Instrument 2 6 2 Set Average Sample Q What does it mean by Set Average Sample and how can it be useful to the user Ans GPPM is designed ina way that user can set sample average from 1 to 8 sample If the user sets 8 sample average then it will give best result Accuracy is specified on 8 sample average Processor takes sample of all parameters as per selection of sample then displays them after calculating average Q How can you Set Average Sample Ans 1 First press MODE button to enter the MODE function 2 Now you can see this menu by pressing MODE or AVG switch one time 3 Select any no of the sample average by using UP amp DOWN arrow buttons 4 Press ENTR to save selected sample average 5 Press ESC to exit from mode function or you can proceed further for another setting 6 In this way you can set sample average 7 Once you set no of average samp
34. rest Factor of phase1 Line 2 mean 4 ff Mean Current amp Current Form Factor of phase Line 3 rect Rectified Current of phaset1 Line 4 Peak Current of phase1 Page 9 Line 1 12 amp cf RMS Current amp Current Crest Factor of phase2 Line 2 mean 4 ff Mean Current amp Current Form Factor of phase2 Line 3 rect Rectified Current of phase2 Line 4 Peak Current of phase2 Page 10 Line 1 13 8 cf RMS Current amp Current Crest Factor of phase3 Line 2 mean 4 ff Mean Current amp Current Form Factor of phase3 Line 3 rect Rectified Current of phase3 Line 4 Peak Current of phase3 Page 11 Line 1 I amp cf RMS Current and Current Crest Factor Average Line 2 mean 4 ff Mean Current amp Current Form Factor Average Line 3 rect Rectified Current Average Line 4 Peak Current Average Page 12 Line 1 V amp I RMS Volt and Current Average Line 2 P 8 PF Total Active Power 8 Power Factor Average Line 3 S 8 Q Total Apparent and Reactive Power Line 4 F 8 M1 Frequency of V1 and Extra meter M1 Page 13A when RPM Mode is enabled Line 1 M1 amp RPM Extra Meter1 and RPM meter Line 2 M2 8 RPM Extra Meter2 and RPM Divisor Line 3 M3 8 F Extra Meter3 and Frequency of V1 Line 4 M4 Extra meter M4 Page 13B when SLIP Mode is enabled Line 1 M1 amp RPM Extra Meter1 and SLIP RPM meter Line 2 M2 8 S Extra Meter2 and Slip
35. ropriate transient suppressor in parallel with all inductive loads 2 Consult the suppressor vendor s application literature for proper selection and sizing Caution 1 Damage to GPPM can result from excessive voltage transient generated by unsuppressed inductive load 2 This damage is not within the scope of normal instrument service and is not covered in the Gopal Electronics s warranty 3 2 CURRENT OVERLOAD 1 Thereisnofuse in GPPM s measuring circuits 2 Excessive current passing through the load terminals will cause excessive internal heating and as a result it may become a cause to damage the Instrument 3 You must know your load condition 4 Double check all connections 5 If an overload occurs immediately switch off power supply and remove all power connections locate that place and correct the problem before re energizing your circuit 6 Ifa circuit breaker is installed it should be installed on the load side of GPPM This will keep the low impedance of the input line connected to GPPM for surge suppression 7 Ifthe line side contains a breaker it should be delayed in operation to open after the load side breaker is opened Caution This overload abuse is not covered by the Gopal Electronics s Warranty 3 3 SURGE PROTECTION Connect MOV between Phase and Neutral terminal of voltage input at rear side of GPPM 3 4 CIRCUIT BREAKERS 1 Proper use of the overload circuit breaker removes all load
36. t is equipped with latest technology for bidirectional measurement so you can measure parameter in both directions Bidirectional means it can take measurement of wattin both cases like change of wiring direction or change in power factor i e lead to lag or lag to lead 3 It measures and displays True RMS Volt True RMS Current Active Power Reactive Power Apparent Power Power Factor Frequency of V1 Mean Rectified Peak Value Crest Factor Form Factor of Voltage and Current Input 4 Youcan measure 10 volt DC through it s four Extra input viz M1 M2 M3 M4 RPM Slip RPM through Extra Input Terminals which are provided atthe rear panel 5 It has separate ADC to measure all basic parameters of each phase simultaneously 6 You can also see all basic parameters simultaneously on your computer by using RS 232 serial interface wire and software called Data Transfer Tool 7 Itis a portable instrument so you can easily handle it 1 6 SYSTEM CONFIGURATION One basic configuration is given below Working of complete system can be understood by following Diagram 4 wire Connection 3Phase source Max applicable Voltage N Phase lt 600V AC or 800V Peak RS 232 Connection Circuit breaker Max applicable Current per Phase lt 80A AC or 110A Peak Load Figure 1 1 7 SPECIFICATIONS OF MODEL PA 60
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