Routine Tests

• Measurement of winding resistances,
• Measuring of insulation resistances,
• Transformer Turns ratio measurement and connection group-polarity determination,
• Induced voltage test,
• Applied-voltage test,
• Measurement of no-load loss and no-load current
• Measurement of Load Losses and Impedance of transformers
• Oil Breakdown Voltage Test
• Leakage test.

Type Tests

• Temperature increase test,
• Lightning impulse voltage test,
• Short circuit withstand test.
• Measurement of audible noise level,
• Mechanical strength test against short circuits.
• Transformer Tank lifetime test.

Special Tests

• Capacity and insulation loss factor measurement (Double test),

• Measuring painting thickness