Tests

The following tests are applied as production tests on every transformer produced:

 

  1. Voltage (turns) ratio
  2. Polarity or angular displacement
  3. No-Load loss and excitation current
  4. Load loss and impedance voltage
  5. Dielectric, Applied Voltage and Induced
  6. Resistance measurement of windings

 

Additionally every new transformer design is tested for the following Type Tests (design tests)

 

  1. Temperature Rise
  2. Sound level
  3. Partial discharge (Corona)
  4. Basic insulation impulse level for HV windings (BIL)

Note:

  1. Other vector groups for each kVA are available upon request.
  2. Load Losses are shown with average winding temperatures at 20 C and in brackes at full temperature rise.