TRANSFORMER TESTS:
Routine tests are applied to all transformers through with manufacturing. Type tests and special tests are however conducted upon the client’s request and depending on agreements.
ROUTINE TESTS:
- Conversion ratio measurement and connection group determination,
- Measurement of winding resistances,
- Applied-voltage test,
- Induced-voltage test,
- Measurement of no load loss and current,
- Measurement of load loss and impedance voltage,
- Insulation resistance measurement,
- Core and body insulation checking test,
- Leakage test.
TYPE TESTS:
- Temperature rise test,
- Lightning impulse voltage test,
- Measurement of audible noise level,
- Mechanical strength test against short circuits.
SPECIAL TESTS:
- Capacity and insulation loss factor measurement (Double test),
- Insulation resistance measurement (Megger test),
- Transformer oil dielectric puncture strength measurement,
- Measurement of harmonics (No load current),
- Partial discharge test,
- Zero component impedance measurement.