- Testing and maintenance of transformers. Before testing should examine the past history of the fault transformer load or get to the destination before the test.
-Testing in transformer maintenance work before the test should check the past history that transformers, pay the normal Fault or has been loaded before, so that you can highlight the test topic.
- test the transformer maintenance work to do before the test should check the history that pay load transformer normally, or has been Fault before heading to focus on the test.