GF312V2 Portable Three Phase Multifunction Electric Meter Calibrator

electric meter calibrator

GF312V2 portable multifunction electric meter calibrator on-site is the newest product produced by our company by widely visiting users and referring to the advantages of the same kind of products home and abroad.


GF312V2 is light weight and compact high precision reference meter for on-site verification and calibration of single or three phase energy meters. Test voltage and test current for the reference meter will be measured at mains on-site or can be generated and measured via external source (optional - model GF3031). The measured part of the product adopts high speed A/D transmission to send DSP to conduct digital processing, which largely improves measured degree of accuracy and stability. Central processing part adopts 32-bit ARM embedded technology to make instrument interface novel, function abundant, operation distinct and easy, and performance steady. Class of accuracy: Class 0.02, 0.05 or 0.1, range from 12A/600V or 120A/600V, with comfort design, small size. The model GF312V2 portable electric meter calibrator is suit for electric power departments, metrology and quality examining departments and electrical lab to field use.


  • Vector diagram display;
  • Waveform oscilloscoper;
  • Screen capture function;
  • Self adjusted clamp-on CTs;
  • 7 inch color TFT touch LCD;
  • Burden measurement for CT/VT;
  • Measurement for energy register;
  • Accuracy class: 0.02, 0.05, 0.1;
  • USB and RS232 communication ports;
  • RS232 port for PC software control;
  • Measurement of energy meter errors;
  • BT and android APP software optional;
  • Harmonic bar diagram and content display;
  • With smart scanning head and pulse cable;
  • Data generation test report by PC software;
  • Measurement of clock error of energy meter);
  • Large capacity storage device for mass memory;
  • Measurement of turn ratio & phase error for CT;
  • Power supply (lithium battery)/ 85-265V AC /U1Un (40-450V);
  • Measurement voltage & current of harmonics of 2nd to 63rd;
  • Check wiring failures and calculation of electricity compensation;
  • 5A, 10A, 20A,100A, 200A, 500A, 1000A, 2000A, 3000A, 6000A optional;
  • Measurement of U, I, P, Q, S, phase angle, power factor, frequency etc;
  • Input two pulse signal for master and slave meter synchronously calibration;


  • Power plant;
  • Energy meter factory;
  • Electrical laboratory;
  • Power engineering company;
  • Metrological service center;
  • Electricity power utilities;
  • Power engineer service company;
  • Distribution power corporation;
  • 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%, 0.1%
Power Supply External power, 85-265V, 45-65Hz
Phase voltage supply 40-450V, 45-65Hz
Li-Battery supply
Voltage measurement
Range 0-600V
Error ±0.05%(30-600V); ±0.02%(30-600V)
Harmonic 2nd - 63rd
Input impedance range 245kΩ@ 250V; 10MΩ @5V
Stability 0.01%/minute
Long term stability <100× 10E -6 /Year
Current measurement
Range (direct connection) 1mA-12A or 1mA-120A
Range (clamp CT) 1mA-120A
Clamp on CTs Optional 5A, 20A, 100A, 200A, 500A, 1000A, 2000A, 3000A, 6000A
Error (direct connection) ±0.05% or ±0.02%
Error (clamp CT) ±0.1% (1mA-120A )
±0.5% (other)
Harmonic 2nd - 63rd
Clamp diameter 12mm or 18mm
Input impedance range 0.04Ω@ 0.05A-12A
Stability 0.01%/minute
Long term stability <100× 10E -6 /Year
Power measure error
Active power (direct connection) ±0.05% or ±0.02%
Active power (clamp CT) ±0.2% (1mA-120A)
Reactive power (direct connection) ±0.1% or ±0.05%
Reactive power (clamp CT) ±0.2% (1mA-120A)
Stability 0.01%/minute
Long term stability <100× 10E -6 /Year
Energy measure error
Active energy (direct connection) ±0.05% or ±0.02%
Active energy (clamp CT) ±0.2% (1mA-120A)
Reactive energy (direct connection) ±0.1% or ±0.05%
Reactive energy (clamp CT) ±0.2% (5mA-120A)
Stability 0.01%/minute
Long term stability <100× 10E -6 /Year
Phase angle
Range 0°-360°
Resolution 0.001°
Error ±0.015°
Range 15Hz-70Hz
Resolution 0.0005Hz
Error 0.001Hz
Reference Meter
Measuring modes 2WA / 2WR / 2WAP 3WA / 3WR /3WAP /3WRCA /3WRCB 4WA /4WAb / 4WR /4WRb /4WAP /4WAPb /4WRC
Brandwidth 3000Hz
Sampling 16 bit 504 samplers/ period
Pulse output
Energy constant 25000
Pulse ratio 1:1
Output level 5V
Pulse input
Input channel 2
Input level 3-12V
Input frequency Max. 100Hz
Resolution 800×480
LCD 7" TFT color touch
Vector diagram Yes
Waveform Yes
Energy accumulation Yes
CT ratio test Yes
CT PT programmable Yes
CT PT burden Yes
Local parameter input Yes
Wiring emulation Yes
Self-calibration Yes
Recorder check Yes
Data storage Yes
Data storage qty 10000
External extend memory Yes
Screen printing Yes
Communication port USB/RS232/BT
Communication with PC Yes
Upload data Yes
External mini printer Yes, Optional
Keyboard Yes, 26pcs keys
IP class according to DIN EN 60529 IP42
Declaration of conformity CE & CNAS conform
Protection class according to DIN EN 61140 II
Overvoltage category voltage measurement CAT III 600V
Overvoltage category current CAT III 600V
lsolation protection IEC 61010-1:2001
Energy measurement IEC 60736; IR46; ANSI C12.20-2002;
JJG 597-2005; JJG596-2012; JJG 1085-2013; JJF 68-2019;
DL/T 826-2002; DL/T 1478-2015; DL/T 448-2016
Reference standard IEC 62052-11
IEC62053-22 & IEC62053-23
Mechanical parameters
Dimensions (W×H×D) (mm) 245×168×70
Weight (kg) 1.8
Portable box weight (kg) 9.5
Environmental conditions
Ambient temperature -25°C to +50°C
Storage temperature -30°C to +65°C
Relative humidity 30%-95%
Power Consumstion ≤13VA

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