MCVT405 CT/PT Analyzer

Turn ratio test.

Ratio error and phase angle error test.

Secondary burden test.

Nameplate guess.

CT residual magnetism determination and demagnetization.

Polarity check.



Technical Index

Ratio Error Test of CT and PT.

Impedance and Admittance Test.

LCD display and touch screen operation.

Sound & Light Alarm Function when polarity abnormal or ratio inconsistent.

With RS232 communication port.

With PC Software.

With inbuilt printer (optional).

Main Features

CT Test PT Test
1)Excitation curve and parameters test2)Turns ratio test

3)Ratio and phase error test

4)Polarity mark check

5)Winding resistance measurement

6)Secondary 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

11) CT Residual Magnetism determination and demagnetization

1) Turns ratio test2) Ratio error test

3) Phase angle error test

4) Polarity test

5) Secondary burden test

6) Winding resistance test


• Accuracy limit value coefficient(ALF) • Instrument security factor(FS)



• CT nameplate guess  

• CT parameters check in work burden  

• PT routine test

• CT transient parameters analysis        

• CT ratio and phase error calibration

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

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

    3) Voltage/Current output: 0.1~180V (AC) / 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 & error
    Range: 1~35000
    1~5000 (error<0.05%) & 5000~35000 (error<0.1%)

    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 & error
    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 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 

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