Builiding of a complete 6kW PV inverter with MPPT chargers

Author	Message
rogerdw Guru Joined: 22/10/2019 Location: Australia Posts: 881	Posted: 10:07pm 19 Mar 2024         Murphy's friend said   Instead Roger, instead of epoxy. Epoxy is a  pain if one decides to unwind that toroid but it works well for a *definitely* permanent wind. Thanks for clarifying that Klaus. I was always hesitant about using epoxy for that exact reason. I rewound hundreds of motorcycle coils years ago and while I never reused the wire, the shards of epoxy were a pain and quite dangerous on some. I did use coil paint to bind them together though due to the hostile environment they had to survive in. If I ever had to do another rewind, it wasn't a huge amount of wire so no great drama. Having said that, I had hoped by keeping my turns really tight and binding each layer with mylar, that I'd avoid any major humming  ...  and so far it's certainly not objectionable. Tony did suggest I could contact a transformer manufacturer and have mine dipped and baked but I don't think it's really necessary.