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GDVA-405 CT PT Transformers Comprehensive Analyzer 

1.1 Application

Tests for Current Transformer ( CT ) :

»    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 ( PT ):

»    Turns ratio test

»    Ratio error and phase angle error test

»    Polarity test

»    Secondary burden test

»    Winding resistance test

Applications of CT / PT Analyzer :

»    CT nameplate check

»    CT parameters check in work burden

»    CT transient parameters analysis

»    CT ratio and phase error calibration

»    PT routine test

1.2 CT/PT Analyzer Function and Technical Index

»    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 

Instrument transformer: current transformer CT , potential transformer PT tester / Analyzer