Testing and commissioning are critical phases in the life cycle of a transformer. These processes help ensure that the transformer is installed correctly, functions as intended, and operates safely within specified parameters. Here's an overview of the testing and commissioning procedures for transformers:

Testing of Transformer:

1. Insulation Resistance Test:

   • Measure the insulation resistance of the windings and core to ensure there are no electrical faults.

2. Turns Ratio Test:

   • Verify the turns ratio of the transformer to ensure it matches the manufacturer's specifications.

3. Vector Group Test:

   • Confirm the vector group of the transformer to ensure correct phase relationships.

4. Winding Resistance Test:

   • Measure the resistance of each winding to verify that it falls within acceptable limits.

5. Open Circuit and Short Circuit Tests:

   • Conduct open circuit and short circuit tests to determine the transformer's equivalent circuit parameters.