Various diagnostic tests can be performed on power and instrument transformers using the DV Power range of transformer test instruments. They include DC current tests:
- Winding resistance measurement
- Tap changer analysis
- Make before break OLTC verification
- Heat run test
as well as AC voltage tests:
- Transformer turns ratio
- Excitation current measurement
- Phase angle measurement
- Vector group detection
- Magnetic Balance
DV Power transformer test instruments use the DVtest method for OLTC testing. This is a unique specialised non-intrusive method for OLTC analysis. In addition, the automatic transformer demagnetisation function is used to remove the effects of a magnetised transformer core and to minimise transformer inrush current. DV Power tap changer analysers also include a dedicated AC/DC current measurement channel which is used to monitor the tap changer motor current during tap changer operation.
DV Power are renowned for using cutting-edge-technology to produce light, powerful, and highly accurate battery, circuit breaker and transformer test equipment. DV Power provides a 3-year warranty on all test instrumentation. This is a guarantee to our customers that they will receive the highest quality test equipment on the market.
