GDVA-404 Current Transformer CT Testing Instrument

GDVA-404 Current Transformer CT Testing Instrument

Introduction:

GDVA-404 CT PT Analyzer is performing excitation, ratio and phase error, polarity, secondary loop burden and coil resistance on current and voltage transformer. The instrument provides fully automatic testing and calibration for all types of low leakage flux current transformer and inductive voltage transformer. The maximum knee point voltage of sample CT could be reached 8.4kv.
The standards support by GDVA-CT PT Analyzer include IEC60044-1, IEC60044-2, IEC60044-6 and C57.13

1.1 Application

Tests for Current Transformer:

1) Excitation curve and parameters test

2) Turns ratio test

3) Ratio and phase error test

4) Polarity mark check

5) Winding resistance measurement

6) Secondary loop burden measurement

7) Error line curve test for protection CT

8) Transient CT parameters test

9) CT nameplate guess

10) Saturation hysteresis loop curve measurement

Tests for Voltage Transformer:

1) Turns ratio and phase angle error test

2) Polarity test

3) Secondary burden test

4) Winding resistance test

Applications of CT/PT Analyzer:

1) CT nameplate check

2) CT parameters check in work burden

3) CT transient parameters analysis

4) CT ratio and phase error calibration

5) PT routine test

1.2 CT/PT Analyzer Technical Index

1) Test standards: IEC60044-1, IEC60044-6, IEC60044-2,IEC60044-5, C57.13

2) Power supply: AC220V±10%, 50/60Hz±10%

3) Voltage output: 0.1~180V (AC)

4) Current output: 0.001~5A(RMS)

5) Power output: 500VA

6) Maximum knee voltage measurement: 45KV

7) Current measurement:

Range: 0~10A (automatically change range in 0.1/0.4/2/10A)

Error: <±0.1%+0.01%FS

8) Voltage measurement:

Range: 0~200V (automatically change range in 1V/10V/70V/200V)

Error: < ±0.1%+0.01%FS

9) Turns ratio measurement:

Range:1~35000

1~2000 error<0.05%

2000~5000 error<0.1%

5000~35000 error<0.2%

10) Phase measurement: error: ±2min; resolution: 0.01min

11) Winding resistance measurement:

Range: 0~8kΩ (automatically change range in 2ohm/20ohm/80ohm/800ohm/8kohm)

Error: < 0.2%RDG+0.02%FS

Maximum resolution: 0.1mΩ

12) Temperature measurement:-50~100 Celsius degree; error<3 Celsius degree

13) CT Secondary burden:

Range: 0~160ohm(automatically change range in 2ohm/20ohm/80ohm/160ohm)

Error: <0.2%RDG+0.02%FS

Maximum resolution: 0.001ohm

14) PT Secondary burden:

Range: 0~80kohm(automatically change range in 800ohm/8kohm/80kohm)

Error :<0.2%RDG+0.02%FS

Maximum resolution: 0.1ohm

15) PT ratio measurement:

Range: 1~35000

1~5000 error<0.2%

5000~35000 error<0.5%

16) PT phase angle test: error < 9min

17) Memory capacity: >1000 groups test results

18) Working condition: temperature: -10°C~50°C;moist: ≤90%

19) Size: 485mm×356mm×183mm

20) Weight: <15kg