What does mean by insulation withstand voltage of Circuit breaker, what is meaning of BIL, how to prove the voltage rating of Circuit breaker, what is power frequency voltage. Could any one help to know all these thing, any link or free e-book where these things are elaborated. Please suggest...

Dear prabhakar singh6: your question has remained unanswered for more than last 9 months. I have got answer for your each query. But due to space constraing, could not be explained in detailed on this very good plat form of askme help desk. Requesting you to contact at my mail address [email protected]; it would be better. So that i could provide you all the material. On this platform; there is no arrangement for attaching the answers. If this could have been so; i could have attached the answers to your query.