Current Transformer CT/PT Analyzer

HM404 CT PT Analyzer is used to measure all kinds of instrument transformer. The CT PT analyser can calculate the ratio errors and phase angle errors of current transformer and voltage transformer at rated burden and working burden in one time test. It also can automatically evaluate the test results according to the selected standard to determine whether the transformer is qualified.

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 Analyzer:

CT nameplate check

CT parameters check in work burden

CT transient parameters analysis

CT ratio and phase error calibration

PT routine test

1.Integrated Multi-Function Tester:Combines the functions of several individual instruments into one device. It can perform:
CT Testing: Ratio, polarity, excitation (saturation) curve, winding resistance, and burden measurement.
PT (VT) Testing: Ratio, polarity, winding resistance, and burden measurement.
Advantage:Eliminates the need to carry multiple heavy devices. Saves time and reduces setup complexity on-site.
2.Automatic Testing and Calculations:With a single connection, it can automatically run a full suite of tests (e.g., ratio, resistance, excitation) and calculate key parameters like the CT's accuracy limit factor (ALF).
Advantage:Drastically reduces human error, simplifies the process for the technician, and provides comprehensive results quickly.

3.Built-in Supply for Ratio Testing:it Has a built-in variable power source that can automatically apply a voltage/current to determine the exact transformation ratio.
Advantage:No need for an external, bulky supply. Provides fast and accurate ratio verification without manual calculations.

4.Excitation (Saturation) Curve Testing:Automatically plots the CT's excitation (magnetization) curve, which is crucial for assessing its performance during fault conditions.
Advantage:Allows engineers to verify that the CT will not saturate prematurely and will correctly operate protective relays during a short-circuit event. This is a critical safety test.

5.User-Friendly Interface and Data Management:Large color screen, intuitive menu, and internal data storage. Often includes USB or Bluetooth for transferring test reports to a computer.

Advantage:Easy to use in the field. Generates professional test certificates for compliance and maintenance records, replacing manual notetaking.

6. Portable and Rugged Design: Lightweight, battery-operated, and built in a sturdy case.

Advantage:Ideal for field work in substations, plants, and remote locations. Enables testing without a nearby power outlet.

1.All technical index should keep in work condition before testing with Analyzer.

2.Please follow associated international standards in a special application.

3.Forbid high voltage or high current connected to CT/PT Analyzer directly.

4.All tests need to follow procedure in user manual.

5.It is forbid to open the box of CT/PT Analyzer. Otherwise, the quality assurance will be invalid.

6.It is forbid to update or extend the tester without manufacturer authorization.

7.Please use the original accessories for Analyzer.

8.It is forbid to cut off test connection before LED indicator light is OFF.

9.Please connect Analyzer to ground with grounding cable in no laboratory application

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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 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

1~5000 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:

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) PT phase angle measurement: maximum error < 3min

19)Make evaluation for test results according to selected standards

20) Make word report for test result

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

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

23) Compare excitation curves with saved excitation curves in the same window

24) Memory capacity: >1000 groups test results

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

26) Size: 485mm×356mm×183mm

27) Weight: <15kg