Variable Frequency Transformer Tester

Published: 2019-10-07 10:16:43

Category: CT/PT Characteristic Tester

Product Description

Test Functions:

1. CT and PT volt-ampere characteristic curves (excitation characteristics)

2. CT automatically provides knee point value

3. CT automatically provides 5% and 10% error curves

4. CT and PT ratio measurement

5. CT and PT polarity determination

6. CT and PT phase measurement (angle difference)

7. CT and PT ratio error measurement

8. CT and PT secondary winding resistance measurement

9. CT and PT secondary actual load measurement

10. CT and PT core demagnetization

11. CT remanence coefficient (Kr)

12. CT secondary time constant (Ts)

13. CT excitation inductance (LU)

14. CT transient area coefficient (Ktd)

15. CT peak instantaneous error (Er)

Technical Specifications:

1. Power supply: AC 220V±10%, 50Hz

2. Device output: 0～220Vrms, 5Arms (20A peak)

3. Ratio error test accuracy: ≤0.05%

4. Secondary winding resistance measurement:

   Range: 0.1～300Ω, Accuracy: ≤0.5%

5. Secondary actual load measurement:

   Range: 5～1000VA, Accuracy: ≤0.5%

6. Phase measurement (angle difference):

   Accuracy: ±4min, Resolution: 0.1min

7. CT ratio measurement:

   Range: 5-25000A/5A (5000A/1A), Accuracy: ±0.5%

8. PT ratio measurement:

   Range: 1:10000, Accuracy: ≤0.5%

9. Ambient temperature: -10℃～40℃

10. Ambient humidity: ≤90%

11. Altitude: ≤1000m

12. Instrument dimensions: 40×20×26(cm)

13. Instrument weight: ≤10Kg

Functional Features:

1. The TPHGC-G variable frequency transformer tester adopts advanced automatic variable frequency power supply technology, with excitation voltage up to 30KV.

2. Meets the requirements of GB1207, GB1208, GB16847 (IEC60044-1, IEC60044-6) and other standards.

3. The instrument supports testing of CT and PT (protection, metering, TP class) steady-state and transient parameters.

4. Automatically provides (excitation) knee point value according to standards. Automatically provides 5% and 10% error curves.

5. Uses intelligent controller, simple operation. Large screen LCD graphical display operation interface.

6. Built-in micro fast printer, can directly print test results on site.

7. No need for external auxiliary equipment, single unit can complete all test items.

8. Test is simple and convenient, one-key completes CT DC resistance, excitation, ratio and polarity tests. Except for load test, all other CT tests use the same wiring method.

9. Can save 3000 sets of test data, not lost after power failure.

10. Supports U disk data transfer, can be read through standard PC.

11. The instrument is small and lightweight, convenient for on-site testing.

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Product Details

Variable Frequency Transformer Tester