Three Phases Energy Meter Test Bench

JWT8303E three-phase equal-potential energy meter testing device comprises of power source, standard watt-hour meter, and error processing system and can be widely used in testing various three-phase watt-hour meters and multifunction watt-hour meters of Grade 0.05 or lower. Among all its features, the equal-potential testing method is specifically suitable for testing such watt-hour meters of Grade 0.05 or lower where the voltage and current measurement loops can not be separated or where the voltage and current measurement loops may be separated or where the voltage and current measurement loops may be separated to improve calibration and testing efficiencies, or such three-phase watt-hour meters where the voltage and current measurement loops can not be separated during testing. One of this device’s important features is that its modulation amplifier’s high output and load capacity matches the three-phase active separation CT to bring you a more convenient and reliable calibration on embedded watt-hour meters.  

 

◆IE60736, which is the standard of Testing Equipment for Electrical Energy Meters

◆IEC62053, which is the standard of electricity metering equipment

 

 

1 Warmup / Basic error test / Standard deviation(S) in error test / Repeatable error test

2 Latent test (no load test) / Initial test (starting up test), automatic / manual operationwith seek mark automatically

3 Voltage influence test / frequency influence test / Deviation test for 24 hours

4 Harmonic test / phase circuit testing with close link / Neutral circuit testing with close link

5 Neutral (cut) missing testing / current reversal in phase /neutral circuit.

6 Dial testing, Accuracy testing

7 Phase rotation test; Unbalance voltage test; Unbalance current test

8 MOXA Card for Software Calibrationthrough RS 232 ports optional

1 Accuracy class: 0.05/0.1/0.2

2 Reference meter: JWT-5303 three~phase wide measurement~range standard energy meter. Accuracy: 0.1/0.05/0.03/0.02

3 Isolated current transformer equipment (Isolated CT)

◆ Accuracy class:0.01(COSØ=0.5C ~ 1 ~ 0.5L，0.05 ~ 120A)

◆ Primary current: 3x0.05 ~ 120A,   Secondary current: 3x0.05 ~ 120A 

◆ Output power: 30VA (MAX, 100A)

4 Output Voltages:

◆ 3x57.7V/110V/240V/415V  VY/phase  Range: 0 ~ 120%.

◆ Fine adjustment: 0.01%   Accuracy: 0.l%RG      Drift per year: 0.05%.

5 Output Current: ◆ 3x0.001 ~l00A.Fine adjustment. : 0.0001A (rnin).   Accuracy: 0.l% RD (50mA~120A)    

◆ l % RG (10mA~50mA)     Drift per year: 0.05%

6 Range of Phase: 0 ~ 360°, fine Adjustment: 0.1°

7 Frequency Range: 45Hz ~ 65 Hz    regulation step 0.01 Hz

8 Waveform Distortions (Output Voltage, Current): ≤ 0.5%

9 Stabilities (Output Voltage, current, power): ≤  0.05 %( 180S)

10 Power factor:

◆Range: ~1.000 ~ 0 ~ 1.000,               Accuracy: 0.l% RG

◆PF0.5~1 (100V ~ 300V, 0.05A~ 100A)     Drift per year: 0.05%

11 Power supply: 3x220V/380V(Y) +/~10% 50Hz/60Hz

12 Max Power Consumption: 3X3000VA 

13 Harmonic wave output: 

◆2~21^st sub harmonic wave contents ≤ 40%

◆3^rd , 5^th , 7^th   sub harmonic wave coupling, total content ≤  40%

◆Phase angle control (odd sub harmonic wave)Wave group control (sub harmonic wave)

14 Ambient Temperatures

◆Storage Range: -20° ~ 55°                Operation Range : ~10° ~ 45°

◆Temperature Coefficient: 0.01%/°C          Relative Humidity : ≤ 85%

15 Control Models: Keyboard / Software control optional

16 Communication Interface: RS232/485