INTRODUCTION GF312V2 portable three phase multifunction energy meter calibrator is with comfort design, small size, and light weight. It is suit for electric power departments, measuring and quality examining departments and electric lab to field use. TECHNICAL SPECIFICATION Electrical parameters Accuracy class 0.05%, 0.1% Power Supply External power, 220V/110V, 50/60Hz Phase voltage supply 45-450V, 50/60Hz Li-Battery supply Voltage measurement Range 30-560V Error ±0.05% Harmonic 2nd-51st Current measurement Range (direct connection) 0.01-10A Range (clamp CT) 5A,100A,500A,1000A,2000A (option) Error (direct connection) ±0.05% Error (clamp CT) ±0.2% (5A, 100A ) ±0.5% (other) Harmonic 2nd-51st Power measure error Active power (direct connection) ±0.05% Active power (clamp CT) ±0.2% (5A, 100A) ±0.5% (other) Reactive power (direct connection) ±0.1% Reactive power (clamp CT) ±0.2% (5A, 100A) ±0.5% (other) Energy measure error Active energy (direct connection) ±0.05% Active energy (clamp CT) ±0.2% (5A, 100A) ±0.5% (other) Reactive energy (direct connection) ±0.1% Reactive energy (clamp CT) ±0.2% (5A, 100A) ±0.5% (other) Phase angle Range 0-360 Resolution 0.01 Error ±0.05 Frequency Range 45Hz-65Hz Resolution 0.001Hz Error 0.002Hz Pulse output Energy constant 25000 Pulse ratio 1:1 Output level 5V Pulse input Input channel 2 Input level 5-10V Input frequency Max. 100Hz Display Resolution 7 TFT color (480-234) Function Vector diagram Waveform Energy accumulation CT ratio test Local parameter input Wiring emulation Self-calibration Recorder check Data storage Data storage qty 5000 External extend memory Screen printing Communication port USB/RS232 Communication with PC Upload data External mini printer External keyboard Dimensions (WHD) (mm) 245-16870 Weight (kg) 1.8 Environmental conditions Ambient temperature -25C to +45C Relative humidity 30%-95%