No power supply unit and difficult to test

Petersen coil compensated power voltage characteristic is essential in the actual operation of the tuning parameters. Power plant or in the installation and commissioning of power  mcb circuit breaker  Petersen coil before they are made ​​on the arc suppression coil voltage characteristic tests. In the past, the majority of power plants with a separate generator for arc suppression coil test power supply is really not  electri cenergy meter . For Power Supply Bureau, the absence of the power unit and difficult to test. To solve this problem, through the practice of using the power  Circuit breaker  transformers for trial to test the arc suppression coil voltage characteristics. If the arc suppression coil volt-ampere characteristics of a good, then the rated phase voltage, should be a linear relationship. Conversely near the rated phase voltage, appeared bent.