Can anyone direct me to a document that says that it is allowed to sell an electronic apparatus that uses a primary winding as a secondary winding - I spent a lot of time Googling this and I can't find anything. I am also concerned about safety and what an insurance company would have to say if a fire breaks out and the culprit is the home built equipment which uses a primary winding as a secondary winding.
/Martin On Thursday, 1 October 2015 06:14:11 UTC+2, gregebert wrote: > > I did some research on UL/CSA approved transformers, and there is a > requirement that all windings withstand a minimum breakdown voltage, even > if they are intended to be connected together, such as dual-primaries. > Depending upon the VA rating and the voltage, the breakdown must be between > 1050 and 4000 V RMS according to how I read the spec (UL5058-2 / CSA C22.2 > #66). The test is conducted between 1 winding, and all other windings and > the core combined and at elevated temperature. There are copies of the spec > online. > > I knew there had to be some amount of isolation, but I did not realize it > was *that* high. While I would never expose or touch anything that is > supposedly "isolated", it does reassure me there is decent insulation. > > > -- You received this message because you are subscribed to the Google Groups "neonixie-l" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To post to this group, send an email to [email protected]. To view this discussion on the web, visit https://groups.google.com/d/msgid/neonixie-l/a6a3a865-ae1b-4e3d-879f-e7dc87318c03%40googlegroups.com. For more options, visit https://groups.google.com/d/optout.
