Test questions:
1. DC resistance measurement
2. Turns ratio measurement
3. Insulation resistance measurement
4. No-load loss test
5. Load loss test
6. Inductance withstand voltage test
7. Power frequency withstand voltage test
8. Temperature rise test (optional)
9. Partial discharge test (optional)
This product includes a distribution cabinet, variable-frequency power supply, intermediate transformer, compensation capacitor, and measurement system, all packed in a 40-foot container.
The overall system design is suitable for the following voltage levels:
Three-phase/single-phase transformers
For 4.16kV transformers, the maximum test capacity is 6300 kVA, with impedance voltage ranging from 5.75% to 8.0%;
For 6.9/0.38-2.08kV transformers, the maximum test capacity is 12,000 kVA, with impedance voltage ranging from 5.75% to 10.0%;
For 13.8 (13.09/13.2/12.47)/0.38-4.16kV transformers, the maximum test capacity is 20,000 kVA, with impedance voltage ranging from 5.75% to 10.0%;
For 16.34/0.48kV transformers, the maximum test capacity is 20,000 kVA, with impedance voltage ranging from 5.75% to 12.0%;
For 27 units (24.7/23.0)/0.38-4.16kV transformers, the maximum test capacity is 20,000 kVA. Impedance voltage: 5.75% to 12.0%;
For 34.5/0.38-13.2kV transformers, the maximum test capacity is 30,000 kVA, with impedance voltage ranging from 5.75% to 12.0%;
Implementation standard: IEC60076/IEEE C57.12.90-2021
System measurement accuracy: Precision transformer/power analyzer with accuracy class 0.05: YOKOGAWA WT500 and above
Use test vehicles to test DC resistance and turns ratio. Wiring is completed once, and data can be uploaded to the regular testing system. No-load, load, inductive withstand voltage, and power frequency withstand voltage tests are all manually wired according to the test procedure, while the computer program automatically completes the tests. After the tests are finished, the results are automatically calculated, and the factory test report is exported.
