Builiding of a complete 6kW PV inverter with MPPT chargers

Author	Message
Murphy's friend Guru Joined: 04/10/2019 Location: Australia Posts: 671	Posted: 05:35am 24 Feb 2024         rogerdw said   I think my biggest concern was if I did it wrong and had to unwind it  ...  then I was stuffed. Of course, now that it works I think I probably should have.   Good point Roger, all of my early transformer windings were epoxied, mainly through the hole to hold the wire pushed out while I had a split PVC tube clamp inserted. That worked a treat to get maximum hole space but it got me when the time came to unwind and modify the winding (as in the primary of my big warpverter tranny I have now re wound). The wire was re usable but I had to pull my straightener along lots of times to remove any sharp epoxy remnants. I now have inserted a permanent split PVC tube clamp  inside and a varnished rope wrap outside. This still allows good cooling while preventing wire  hum.