Technical requirements for 10kV voltage withstanding test
Thread Content
A new 10kV transformer has been added recently. After the high-voltage cables have their terminal connections made, a voltage resistance test is required. I would like to ask for the parameters needed for this test. Is the same procedure applicable to transformers as well?
There should be standards for this; based on my experience, 10KV cross-linked PVC cables can withstand a voltage of 43KV per minute. After three to four years, their voltage resistance can drop to around 28–38KV, which is still acceptable. When the transformer is new, it can be set to 26 KV–38 KV. In the future, unless there is a special reason, it is best not to conduct voltage resistance tests on transformers. Just use a megohmmeter with a reading of over 2000 to test it.