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 test
2) Ratio error and phase angle error test
3) Polarity test
4) Secondary burden test
5) Winding resistance test
Applications of CT PT Analyser :
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 Analyser and 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
1~10000 error<0.1%
10000~35000 error<0.2%
16) PT ratio error measurement: Typical error <0.05%, Maximum Error<0.1%
17) PT phase angle measurement: maximum error < 3min
18)Make evaluation for test results according to selected standards
19) Make word report for test result
20) Make word reports one time for multi-group test records on the PC
21) Calculate the ratio errors and phase angle errors at rated burden and working burden in one time test
22) Compare excitation curves with saved excitation curves in the same window
23) Memory capacity: >1000 groups test results
24)Working condition: temperature: -10℃~50℃; moist: ≤90%
25) Size: 485mm×356mm×183mm
26) Weight: <15kg
