Time for a new Warpinverter build

Author	Message
rogerdw Guru Joined: 22/10/2019 Location: Australia Posts: 955	Posted: 04:16am 16 Feb 2021         Haxby said   The aerosharp range, from 1kw, 1.5kw, 2kw, 3kw all have the same diameter copper wire that is not potted in, so they lend themselves well to unwinding and reusing the copper. Other brands might be a bit of a hit-and -miss affair in terms of copper wire thickness, potted core, etc. Not sure why other brands are not too popular in this forum, maybe it's because Aero-sharps were not considered very reliable by those in the industry so there may be more faulty ones out there? I've taken apart a few now, and I'm very happy with their quality. Since I haven't repaired any, maybe they all share a common failure point. I've only unwound three 3kW and one 1.5kW AeroSharp inverters  ...  and I do recall being surprised that the 1.5kW used 1.8mm wire for the 92V winding  ...  while the others were mostly all 1.6mm. My collection also inludes some 2kW units, but I haven't actually stripped any of their windings yet. I agree that they appear well made and I'm not even sure what was wrong with the ones I dismantled. They all came from a solar inverter repair co  ...  though I suspect the company is only called that to attract people with solar issues  ... ...  then they just sell them new inverters.   One of the 3kW units had shorted turns on the toroid  ...  and I reckon one of the others had a faulty IGBT module. The 5kW SMA I mentioned above is on another level again as far as build goes  ...  no scrimping on quality of parts, fittings and connectors  ... ...  10 minutes and you can have it completely stripped down to minimum components  ... And maybe 15 mins to completely reassemble it again  ...  but bear in mind this is a much later transformerless model.