Time for a new Warpinverter build

Author	Message
rogerdw Guru Joined: 22/10/2019 Location: Australia Posts: 952	Posted: 11:34am 18 Mar 2021         renewableMark said   nahhhh I don't care mate, Klaus, Tony, any one of us would have told you that anyway. Where did you get that tape from? I seem to remember it wasn't cheap for what you got, and it's hard to get. I think they were about the size of a roll of electrical tape. From memory it needed three or four rolls to do a double stacked 3kw core set You just need to not be a cheapskate when making these, just get what you need the end product will be still far cheaper than a commercial unit. Remember that tape is insulation, VERY IMPORTANT!!! Yes, mine were about the size of a roll of electrical tape too, I was expecting much bigger. My 3rd biggest transformer has 7 secondary windings in 7 layers and with mylar underneath and between each layer. That's a lotta tape! And the big one is going to use twice the length. I am very happy with the condition of the stuff I've pulled off most of the transformers  ...  though some still had glue from tape stuck on it and the stuff from the burnt transformer was pretty discoloured and brittle, hence chucked out. I'm also confident with the wire too as with the way it's wound there is virtually no winding touching another winding anywhere  ...  without mylar in between. I'm actually astounded that is possible. And from the jumbled mess of some of the windings I've dismantled, I'm surprised they run more than 5 minutes the way they've been wound  ...  so their original insulation must be some super dooper stuff! I did buy a roll of new 1.8mm wire (7kg) and coz I'm not sure just how much the big transformer will need, I am saving it for that. Perhaps I'll buy new insulation for that one as well just to be on the safe side. Normally I would never have considered using second hand wire  ...  but all you guys have been using it for years with the Ozinverters and getting away with it  ...  so I figured I'd take a chance with the 3 smaller transformers. They're not really that easy to wind  ...  but if I had to rewind one it wouldn't be the end of the world. Plus if I do manage to pull it off, it will be awesome to tell the cc botherers that my inverter is built largely with scrap!