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.