AC Power Meter
Contents
1. by sending commands through a computer interface on the rear panel Communication parameter Baudrate 1200 2400 4800 9600 bps Parity None Data bits 8 Stop bit 1 Wire drawing Located in the rear panel of GPM 8212 3 TXD DTR 31 2 RAD RS 232 RS 485 Pin 232 SIGNAL CD RXD TXD DTR GND DSR RTS CTS RI 9 PIN 1 2 WwW D n oN R o0 O 25PIN 8 3 2 20 7 6 4 5 22 Pin 485 SIGNAL Nc TP TP RxD RxD Ne Nc NC NC PIN No 1 2 3 4 5 6 7 8 9 18 POWER METER USER MANUAL Communication command COMMAND DESCRIPTION EXAMPLE F00 Data hold enable FOL Data hold disable F02 Set in maximum status F03 Set in minimum status F04 Set in normal status R00 V Range 640 0V ROI V Range 320 0V R02 V Range 160 0V R03 V Range 80 00V R04 V Range 40 00V R05 V Range 20 00V R06 V Range 10 00V R07 V Range 5 000V RO8 A Range 20 48A R09 A Range 10 24A R10 A Range 5 120A RII A Range 2 560A R12 A Range 1 280A R13 A Range 640 0mA R14 A Range 320 0mA R15 A Range 160 0mA R16 V Range Autorange R17 A Range Autorange S00 Set Voltage Ratio PT S00 1 S01 Set Current Ratio CT S01 1 V00 Read Voltage Vol Read Current V02 Read Watt V03 Read PF V04 Read Hz 19 POWER METER USER MANUAL DEMO Program Demo program2. WARNING Warning statements identify condition or practices that could result in injury or loss of life CAUTION Caution statements identify conditions or rN practices that could result in damage to this product or other property POWER METER t e USER MANUAL DANGER High Voltage ATTENTION refer to Manual Protective Conductor Terminal ground Earth Terminal Frame or Chassis Terminal POWER METER USER MANUAL FOR UNITED KINGDOM ONLY NOTE This lead appliance must only be wired by competent persons WARNING THIS APPLIANCE MUST BE EARTHED IMPORTANT The wires in this lead are coloured in accordance with the following code Green Yellow Earth Blue Neutral Brown Live Phase As the colours of the wires in main leads may not correspond with the colours marking identified in your plug appliance proceed as follows The wire which is coloured Green amp Yellow must be connected to the Earth terminal marked with the letter E or by the earth symbol or coloured Green or Green amp Yellow The wire which is coloured Blue must be connected to the terminal which is marked with the letter N or coloured Blue or POWER METER USER MANUAL Black The wire which is coloured Brown must be connected to the terminal marked with the letter L or P or coloured Brown or Red If in doubt consult the instructions provided with the equipment or contact the supplier This cable appliance sho
3. WARNING Make sure that the source power is off before any wiring connection WARNING Make sure that all connecters are well connected before the source power is on gt amp 15 POWER METER USER MANUAL 5 USAGE DESCRIPTION Baudrate setting 1 Press the button of Baud to appear the letter of BAUD on the window 2 window 3 indicates the previous setting parameters and window 1 appears If no further action it will return to previous test mode within 5 seconds or press Back button directly 2 Then proceed the following steps to set the desired parameters such as 1200 Press 1 to appear 1 Press 2 to appear 12 Press 0 to appear 120 Press 0 to appear 1200 3 If there is any mistake press key to erase front error numbers 4 After pressing ENTER to save the information return to test mode Address setting 1 Press Addr to appear ADDR on the window 2 window 3 indicates previous setting parameters and window 1 appears If no further action it will return to previous test mode within 5 seconds or press Back button directly 2 Then proceed the following steps to set the desired parameters such as 10 Press 1 to appear 1 Press 0 to appear 10 3 If there is any mistake press key to erase front error numbers 4 After pressing ENTER to save the information return to test mode 16 POWER METER USER MA
4. METER USER MANUAL 3 SPECIFICATION VOLTAGE Banse 5 000V 10 00V 20 00V 40 00V 80 00V 160 0V 320 0V 8 640 0V total 8 ranges by auto range or manual Measurement Type True rms Input Resistance 1MQ Maximum Input Voltage 1000V peak 700V rms PT Ratio Setting 1 to 9999 Aocitacy a2 CSC 49 1 of reading 1 of range Sinewave CURRENT Range 160 0mA 320 0mA 640 0mA 1 280A 2 560A 5 120A 10 24A 20 48A total 8 ranges by auto range or manual Measurement Type True rms Input Resistance 0 010 Maximum Input Current 30A peak 20A rms CT Ratio setting 1 to 9999 Accuracy at OBE 49 1 of reading 0 1 of range Sinewave WATT Range ene y 160 0mA 320 0mA 640 0mA 1 280A 2 560A 5 120A 10 24A 20 48A 5 000V 800 0mW 1 600W 3 200W 6 400W 12 80W 25 60W 51 20W 102 4W 10 00V 1 600W W 3 200W 6 400W 12 80W 25 60W 51 20W 102 4W 204 8W 20 00V 3 200W W 6 400W 12 80W 25 60W 51 20W 102 4W 204 8W_ 409 6W 40 00V 6 400W 12 80W 25 60W 51 20W 102 4W 204 8W 409 6W 819 2W 80 00V 12 80W W_ 25 60W 51 20W 102 4W 204 8W_ 409 6W W 819 2W_ 1 638kW 160 0V_ 25 60W 51 20W 102 4W 204 8W 409 6W 819 2W_ 1 638kW 3 276kW 320 0V 51 20W W 102 4W 204 8W 409 6W 819 2W 1 638kW 3 276kW 6 553kW 640 0V 102 4W 204 8W 409 6W 819 2W_ 1 638k
5. AC Power Meter GPM 8212 USER MANUAL GW INSTEK PART NO 82PM 82220MB z ISO 9001 CERTIFIED MANUFACTURER GWIMSTEK This manual contains proprietary information which is protected by copyrights All rights are reserved No part of this manual may be photocopied reproduced or translated to another language without prior written consent of Good Will company The information in this manual was correct at the time of printing However Good Will continues to improve products and reserves the rights to change specification equipment and maintenance procedures at any time without notice Good Will Instrument Co Ltd No 7 1 Jhongsing Rd Tucheng City Taipei County 236 Taiwan POWER METER USER MANUAL TABLE OF CONTENTS PAGE 1 SAFETY SUMMARY cccccecsccscsccsccecssessseseeeesesesees 2 INTRODUCTIION ccccccsscsscececscsceccececscccececscecesesss 3 SPECIFICATION cscscsesecsccccvccsccccceecsvscessesesecevese 4 PANEL INTRODUCTION amp WIRING sccececesseveeeee 5 USAGE DESCRIPTION ccccccsssscscscscescscescecscesceees 6 RS232 COMMUNICATION INTERFACE 0eeeceseeeeseee 7 MAINTENANCE cccscccecccscccccsccccccscscscecesssesseeeees POWER METER USER MANUAL 1 SAFETY TERMS AND SYMBOLS Please take a moment to review these safety terms and symbols which may appear in this manual or on Equipment to prevent damage to the Power Meter
6. NUAL PT Ratio setting 1 Press the button of VPT to appear the letters of PT on the window 2 window 3 indicates the previous setting parameter and window 1 appears If no further action it will return to previous test mode within 5 seconds or press key directly 2 Then proceed the following steps to set the desired parameters such as 1000 Press 1 to appear 1 Press 0 to appear 10 Press 0 to appear 100 0 to appear 1000 3 If there is any mistake press key to erase front error numbers Press 4 After pressing ENTER to save the information return to test mode CT Ratio setting 1 Press the button of ACT to appear the letters of CT on the window 2 window 3 indicates the previous setting parameters and window 1 appears If no further action it will return to previous test mode within 5 seconds or press key directly 2 Then proceed the following steps to set the desired parameters such as 1000 Press 1 to appear 1 Press 0 to appear 10 Press 0 0 to appear 1000 3 If there is any mistake press key to erase front error numbers to appear 100 Press 4 After pressing ENTER to save the information return to test mode 17 POWER METER USER MANUAL 6 RS232 COMMUNICATION INTERFACE Introduction The instrument can be operated from a host eg A terminal controller computer PLC
7. W_ 3 276kW 6 553kW 13 10kW Measurement Type True rms Acc racy at 23050 49 2 of reading 6 2 of range Sinewave POWER METER USER MANUAL POWER FACTOR Range 0 001 to 1 000 Computation W V xA Power factor PF FREQUENCY Measurement Range 40 0Hz to 400 0Hz Accuracy 23 C 45 C 49 2 of reading 2 digits OPTION Communication RS 232 RS 485 GENERAL Main Supply AC86 265V 50 60Hz Warm up time 30 minutes more Display A 4 digit 0 56 LED with 2 sets of 4 digit 0 4 LED Minimum input 2 of Range Response time 2 cycles sec Overload indicating O L Working temperature 0 50 C RH lt 80 Temperature coefficient 49 1 FS C Accessories Instruction manual x 1 Power cord x 1 gt Disk x 1 Dimension 250 W x90 H x281 D m m Weigh Approx 1 6 kgs Note The 1 0mm of cross section dimension power cord should be used when the current reaches to 10 Amperes and use 2 0mm of cross section dimension power cord when the current reaches to 20 Amperes POWER METER USER MANUAL 4 PANEL AND OUTLOOK INTRODUCTION Fig 4 1 FRONT PANEL 9 Unit amp Status 2 Watt Display 6 Unit Indicator Indleator Window 1 11 Input Voltage amp Remote Control Q Voltage Power factor Output Load Indicator Frequency Display Window 2 Terminal 4 Power Switch 8 Push Bu
8. er Please turn the handle left and right side slightly that will make it easier to pull off the handle T 0g 0 o 3 There are two washers inside of two holes the joints of handle and case respectively Please use a screwdriver to pry open these washers 23 POWER METER USER MANUAL 4 Please use a screwdriver to open the screw located at upper side of rear panel Therefore the upper cover can pull toward the backside In the meantime the upper cover is moved MF Note If you want to install the upper cover please reverse above steps 7 3 Cleaning To keep the instrument clean wipe the case with a damp cloth and detergent Do not use abrasives or solvents 24
9. er autorange of voltage 12 POWER METER USER MANUAL Number key Set the voltage range downward press and hold the lt lt button for 2 seconds to enter autorange of voltage Number key Set the current range upward press and hold the gt gt button for 2 seconds to enter autorange of voltage Number key Set the current range downward press and hold the gt lt button for 2 seconds to enter autorange of current Number key Set Window 2 to indicate Voltage function Number key g Back key Set Window 2 to indicate frequency function ENTER Enter key HOLD Maintain the present display value 13 Set Window 2 to indicate power factor function POWER METER USER MANUAL Fig 4 2 REAR PANEL RS 232 RS 485 Current Breaker Interface Output Power Inlet CIRCUIT BREAKER Ors232 Ors485 PRESS of Va RESET souRCE LOAD oak evn ASE AR G Nn Link s Lour Nov Input Terminal Board Current Breaker This is an Over current protected component When the measurement is interrupted with over current input please reduce the measured load then re switch on the measurement can be back to normal 14 POWER METER USER MANUAL 4 2 Wiring Without PT or CT Nin Lin L out N out 3 es B a BIBIE Nd Te Nw La Lout N out SOURCE With CT BISI Sr Sr 33 De LOAD SOURCE i es Be
10. language BASIC Computer set Baudrate equal 9600 and use COM2 The GPM 8212 set Baudrate equal 9600 Command define in CMD 10CMD V00 20VALUE 300PEN COM2 9600 N 8 CS DS CD FOR RANDOM AS 2 LEN 1 40FOR I 1 TO 100 50PRINT 2 CMD 60INPUT 2 VALUE 7OPRINT VALUE 80NEXT I 9O0CLOSE 2 100END 20 POWER METER USER MANUAL 7 MAINTENANCE The following instructions are used by qualified person only to avoid electrical shock do not perform any service other than contained in the operation instructions unless you are qualified to do so 7 1 Fuse Rating and type If the fuse is ruptured the Power METER will not operate Try to determine and correct the cause of the blown fuse then replace the fuse with correct rating and type shown as below FUSE Rating and Type Rating Input MOREL 115V 230V Watts VA GPM 8212 T0 5A 250V 22 28 WARNING For continued fire protection replace only with A N 250V fuse of the specified type and rating and disconnect the power cord before proceeding fuse replacement 21 POWER METER USER MANUAL 7 2 Fuse Replacement Procedure When you proceed calibration or maintenance of the Power Meter if you want to replace the fuse the upper cover must be removed according to the following steps 1 The handle must be turned downward 90 degrees first 22 POWER METER USER MANUAL 2 Pull apart the handle from the Power Met
11. to auto range The voltage measurement will be auto ranged following the change of external voltage Display Window 3 Auto range indicator The indicator is on when the window of current measurement is set to auto range The current measurement will be auto ranged following the change of external current Window 2 for voltage Peak indicator The Vpeak indicator is on when the input voltage peak is larger than the measurement of voltage range If the Vpeak indicator is illustrated with manual ranging switch range by using V button Window 3 for current Peak indicator The Apeak indicator is on when the input current peak is larger than the measurement of current range If the Apeak indicator is illustrated with manual ranging switch range by using A button 11 POWER METER USER MANUAL 8 Pushbuttons Set up address for RS 458 interface only m Number key Set interface baudrate with 1200 2400 4800 and 9600 bps available for selection w gt e 53 S H RATE 5 Number key VPT Set PT Ratio range at 1 9999 0 Number key ACT Set CT Ratio range at 1 9999 Number key Set to the maximum value of the display then press MAX the button again back to previous status j gl Number key Set to the minimum value of the display then press MIN y the button again back to previous status Number key Set the voltage range upward press and hold the pi button for 2 seconds to ent
12. tton Fuse Holder 3 Status Indicator 6 Current Display Window 3 POWER METER USER MANUAL 4 1 Function Description 1 Remote Control z 3 Status Indicator RUN 0 A RATIO E Z Indicator Remote Control Indicator When the instrument is working normal the RUN indicator is flashing stably if not it will be appeared constant on or off The HOLD indicator is on when press the key of HOLD to maintain the display value not to be changed by any input The MAX indicator is on when press the key of MAX the display then appears the maximum value it obtained The MIN indicator is on when press the key of MIN the display then appears the minimum value it obtained The indicator is on when the value of PT and CT is set to other value except 1 POWER METER USER MANUAL 5 Unit Indicator Display Window 1 Milliwatt indicator Display Window 1 Watt indicator Display Window 1 Kilowatt indicator 9 Unit amp Status Indicator Display Window Display Window Display Window Display Window Display Window Display Window 10 2 Volt indicator 2 Kilovolt indicator 2 Power Factor indicator 2 Hertz indicator 3 Milliampere indicator 3 Ampere indicator POWER METER USER MANUAL Auto Display Window 3 Kiloampere indicator Display Window 2 Auto range indicator The indicator is on when the window of voltage measurement is set
13. uld be protected by a suitably rated and approved HBC mains fuse refer to the rating information on the equipment and or user instructions for details As a guide cable of 0 75mm should be protected by a 3A or 5A fuse Larger conductors would normally require 13A types depending on the connection method used Any moulded mains connector that requires removal replacement must be destroyed by removal of any fuse amp fuse carrier and disposed of immediately as a plug with bared wires is hazardous if a engaged in live socket Any re wiring must be carried out in accordance with the information detailed on this label POWER METER USER MANUAL 2 INTRODUCTION GPM 8212 Power Meter is a 16 bit CPU microprocessor equipped with multifunction of full digitized measurement calibration and output The microprocessor has the advantage of high speed sampling and calculation function to accurately measure the distortion signal of waveform Except for its essential measurement on AC voltage AC current AC power Power factor and Frequency the power meter also provides additional features of PT CT ratio setting display value holding the value of maximum and minimum holding range selecting auto ranging and etc In order for an even more efficient and convenient communication the standard RS232 or RS4835 is available as an option attached to the instrument The GPM 8212 is a low cost easy to use power measuring instrument POWER
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