Routine tests:
Transformer oil testing (including acidity, dewpoint, flashpoint, breakdown, capacitance tan delta, dissolved gas analysis)
Transformer insulation resistance testing
Transformer winding resistance testing
Transformer turns ratio testing
Transformer load/no-load current loss testing
Transformer capacitance tan delta testing
Transformer short circuit impedance load loss testing
Transformer power frequency withstand voltage testing
Transformer inductive withstand voltage testing (including 110kV transformer partial discharge testing)
Impulse voltage testing (including full wave, chopping wave testing)
Type tests:
Temperature rising testing
Special tests:
Zero-sequence impedance testing
