GDVA 4705 Transfomer CT Analyzer

GDVA-405 CT and PT Transformer TTR Tester, Polarity Test, Coil Resistance Test

I. Application

Tests for Current Transformer:

» Excitation curve and parameters test

» Turns ratio test

» Ratio and phase error test

» Polarity mark check

» Winding resistance measurement

» Secondary loop burden measurement

» Error line curve test for protection CT

» Transient CT parameters test

» CT nameplate guess

» Saturation hysteresis loop curve measurement

Tests for Voltage Transformer:

» Turns ratio test

» Ratio error and phase angle error test

» Polarity test

» Secondary burden test

» Winding resistance test

Applications of CT PT Tester

» CT nameplate check

» CT parameters check in work burden

» CT transient parameters analysis

» CT ratio and phase error calibration

» PT routine test

II. Function and Technical Index of CT PT Tester

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

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

» Voltage output: 0.1~180V (AC)

» Current output: 0.001~5A(RMS)

» Power output: 500VA

» Maximum knee voltage measurement: 45KV

» Current measurement:

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

Error: <±0.1%+0.01%FS

» Voltage measurement:

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

Error: < ±0.1%+0.01%FS

» Turns ratio measurement:

Range:1~35000

1~2000 error<0.05%

2000~5000 error<0.1%

5000~35000 error<0.2%

» Phase measurement: error: ±2min; resolution: 0.01min

» 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

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

» 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

» PT Secondary burden:

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

Error :<0.2%RDG+0.02%FS

Maximum resolution: 0.1ohm

» PT ratio measurement:

Range: 1~35000

1~10000 error<0.1%

10000~35000 error<0.2%

» PT ratio error measurement: Typical error <0.05%, Maximum Error<0.1%

» PT phase angle measurement: maximum error < 3min

» Make evaluation for test results according to selected standards

» Make word report for test result

» Make word reports one time for multi-group test records on the PC

» Calculate the ratio errors and phase angle errors at rated burden and working burden in one time test

» Compare excitation curves with saved excitation curves in the same window

» Memory capacity: >1000 groups test results

» Working condition: temperature: -10℃~50℃; moist: ≤90%

» Size: 485mm×356mm×183mm

» Weight: <15kg