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/49ff59a7-f8f7-4ccc-bd7c-5969e6fd2514%40googlegroups.com. For more options, visit https://groups.google.com/d/optout.
