GF312B2 Three phase portable standard energy meter test equipment

energy meter test equipment

GF312B2 portable energy meter test equipment is high accuracy 0.02%, with all kinds of optional clamp on ct (5A,20A, 100A, 200A, 500A, 1000A, 2000A, 3000A) and smart optical sampler. It can be applied in electrical laboratory or on site to check watt-hour meter error. it will be ensured by a combination of measures such as the use of 24bit A/D converter, DSP+32 bit ARM technology, a widely measuring range 600V/120A, adapted to typical test points of most recognized national metrological institutes. It can be as high precision three phase reference energy meter, also three phase portable energy meter calibrator, test ct pt ratio, burden etc. This model GF312B2 has been used many ISO17025 laboratory for electricity power utilities.



  • CT PT burden test;
  • Data download by U disk;
  • Vector diagram function;
  • With PC control software;
  • Waveform display function;
  • DSP+32 bit ARM technology;
  • High accuracy up to 0.02%;
  • 7 inch TFT touch color LCD;
  • 4 quadrant metrology energy;
  • CT ratio & phase error test;
  • Energy accumulating function;
  • Metal body, strong and reliable;
  • Measurement 2nd~63st times harmonics;
  • Suit for testing in the field or in the lab;
  • 1P2W, 1P3W, 3P3W, 3P4W connection wire mode;
  • Verification of comprehensive metering device;
  • Check energy meter connection fault in the field;


  • Power plant;
  • Energy meter R & D;
  • Electrical laboratory;
  • Watt-hour meter factory;
  • Metrological service center;
  • ISO17025 electrical laboratory;
  • Electricity meter manufacturer;
  • Electricity power bureau & power company;
  • National Metrology and testing department;
  • Electrical Department of industrial and mining enterprises;


Electrical parameters 
Accuracy class 0.02% , 0.05%
Power supply 40-450V, 50/60Hz±2Hz
Power consumption 13VA
Communication port RS232, USB
Voltage measurement(U1 U2 U3 UN)
Range 0.0000-600.0000V
Resolution 0.001V
Error ±0.02% (30V-600V)
±0.05% (0.01V-30V)
Harmonic 2nd-63st
Current measurement(I1 I2 I3)
Range (direct connection) 1mA-120.0000A
Resolution 0.1mA
Error (direct connection) ±0.02% (10mA-120A)
±0.05% (0.1mA-10mA)
Harmonic 2nd-63st
Clamp on CT(option) 5A,20A, 100A, 200A, 500A, 1000A, 2000A, 3000A
Accuracy 0.2%
Power measure error 
Active power (direct connection) ±0.02% (0.1A-120A)
±0.05% (0.02A-0.1A)
Reactive power (direct connection) ±0.05% (0.1A-120A)
Energy measure error 
Active energy (direct connection) ±0.02% (0.01A-120A)
±0.05% (0.001A-0.01A)
Reactive energy (direct connection) ±0.05% (0.01A-120A)
Phase angle 
Range 0°-360°
Resolution 0.005°
Error ±0.015°
Range 40.0000-70.0000Hz
Resolution 0.0005Hz
Error 0.001Hz
Power factor 
Range -1.0 ~ 0 ~ +1.0
Resolution 0.0001
Error 0.0005
Reference Meter 
Measuring modes 2WA / 2WR / 2WAP
4WA /4WAb / 4WR /4WRb /4WAP /4WAPb /4WRC
Brandwidth 3000Hz
Sampling 24 bit 504 samplers/ period
Pulse output 
Energy constant 1-250000, programmable
Pulse ratio 1:1
Output level 5V
Pulse input 
Input channel 2
Input level 5-24V
Input frequency Max. 2MHz
Color LCD 7"STN (800×480), touch
Vector diagram Yes
Waveform Yes
Energy accumulation Yes
CT ratio test Yes
CT PT programmable Yes
CT PT burden Optional
Local parameter input Yes
Wiring emulation Yes
Self-calibration Yes
Recorder check Yes
Data storage Yes
GPS Yes, Optional
Data storage qty 10000
External extend memory Yes
Screen printing Yes
Communication port USB/RS232 
Communication with PC Yes 
Upload data Yes, U disk 
External mini printer Yes, Optional 
Keyboard Yes
Standard IEC 62053-21,22, 23; IEC 60736; IR46; ANSI C12.20-2022;
JJG 597-2005; JJG596-2012; JJG 1085-2013; JJF 68-2019;
DL/T 826-2002; DL/T 1478-2015; DL/T 448-2016
IP class according to DIN EN 60529 IP65
Declaration of conformity CE & CNAS conform
Protection class according to DIN EN 61140 II
Isolation protection IEC 61010-1:2001
Overvoltage category voltage measurement CAT III 600V
Overvoltage category current CAT III 600V
Mechanical parameters 
Dimensions (W×H×D) (mm) 365×269×151
Weight (kg) 4
Environmental conditions 
Ambient temperature -25°C to +50°C
Storage temperature -30°C to +65°C
Relative humidity 15%-95%
Temperature coefficient ≤0.0005% /℃
Influence of external fields ≤0.05 %/mT

Download Catalogue

Related Products