Transformer Test
Routine tests for each transformer :
Determination of ratio tranformation and vector group
Measurement of windigns resistance
Measurement of no-load losses
Measurement of no-load currant
Measurement of impedance voltage
Induced overvoltage test
Applied voltage test
Type tests:
Carried out upon agreement
Against extra price
Oil & Windings temperature rise test
Lighting impulse test
Special test:
Measurement of insulation resistance
Measurement of noise level
Measurement of partial discharge
Measurement of harmonics
Leakage test
Measurement of capacitance and power factor (tg)
Measurement zero sequence impedance
Measurement oil break down test
