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portable reference meter
portable reference meter

GF312B2PORTABLE THREE PHASE REFERENCE METER WITH CLAMP ON CT

GF312B2 portable three phase reference meter high accuracy 0.02%, with all kinds of optional clamp on ct and smart optical sampler. It can be applied in electrical laboratory or on site. 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 meter calibrator, test ct pt ratio, burden etc.

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FEATURES

■ Vector diagram function;

■ Data download by U disk;

■ With PC control software;

■ Waveform display function;

■ High accuracy up to 0.02%;

■ 7 inch TFT touch color LCD;

■ DSP+32 bit ARM technology;

■ Energy accumulating function;

■ Metal body, strong and reliable;

■ Measurement 2~63 times harmonics;

■ Suit for testing in the field or in the lab;

■ Verification of comprehensive metering device;

APPLICATION

■ Power plant;

■ Electrical laboratory;

■ Energy meter R & D;

■ Watt-hour meter factory;

■ Metrological service center;

■ Electricity power bureau & power company;

■ National Metrology and testing department;

■ Electrical Department of industrial and mining enterprises;

PARAMETERS

Electrical parameters
Accuracy class 0.02% , 0.05%
Power supply 40-450V, 50/60Hz±2Hz
Power consumption 13VA
Communication port RS232, USB
Voltage measurement
Range 0.04-600V
Resolution 0.001V
Error ±0.02% (30V-600V)
±0.05% (0.1V-30V)
Harmonic 2nd-63st
Current measurement
Range (direct connection) 1mA-120A
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 0.20%
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°
Frequency
Range 40-70Hz
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
3WA / 3WR /3WAP /3WRCA /3WRCB
4WA /4WAb / 4WR /4WRb /4WAP /4WAPb /4WRC
Brandwidth 3000Hz
Sampling 16 bit 504 samplers/ period
Pulse output
Energy constant 1-250000
Pulse ratio 1:1
Output level 5V
Pulse input
Input channel 2
Input level 5-24V
Input frequency Max. 2MHz
Display
Color LCD 7"STN (800×480), touch
Function
Vector diagram Yes
Waveform Yes
Energy accumulation Yes
CT ratio test Yes
CT PT programmable Yes
Local parameter input Yes
Wiring emulation Yes
Self-calibration Yes
Recorder check Yes
Data storage Yes
GPS Yes
Data storage qty 10000
External extend memory Yes
Screen printing Yes
Communication port USB/RS232 
Communication with PC Yes
Upload data Yes
External mini printer Yes
Keyboard Yes
Safety
IP class according to DIN EN 60529 IP65
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
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%

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