Apart from section-wise testing of all components and sub-assemblies, each fully assembled transformer undergoes tests as per applicable standards including:
- Insulation and Continuity
- Voltage Ratio
- Polarity
- Vector Group
- Excitation Current and No Load Loss
- Winding Resistance
- Induced Over-Voltage Test (DFDV)
- Separate Source Voltage Withstand
- Breakdown Voltage
- Tan-Delta Measurement of Transformer Oil
- and any other applicable tests.
Type tests and special tests can be conducted as per requirements, such as:
- Temperature Rise
- Impulse
- Dynamic Short Circuit
- Noise Level Measurement
- Zero Sequence Impedance Measurement
- etc.
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