Load tested my new 48v 1200w inverter and my 48v rectifier at same time. I had it powering a couple switches, routers, and a 150w bulb. Then it died when I put in a heater on low. That was a bit concerning as it was below the 1200w rating, then I realized I was connected on the battery side of the rectifier, and I had previously set a very low current limit when I was testing it, so it was doing it's job and limiting current. I removed the limit and it was powering the heater fine. I was pulling around 1100w total. I rewired it so it's on the proper part of the rectifier, and tested again and all is good too. I was also getting a rectifier overload with just one rectifier installed but then realized with this load I was in fact pulling about 22 amps and the rectifiers are rated for 20 amps. The shelf takes 3 rectifiers so I will want to run all 3 to be safe, that will give me 40 amps of redundant power, which comes up to around 2kw which I don't expect to exceed.
I have some battery spade connectors on the way, so once those show up I will make a proper wiring harness for a temporary 7.2ah battery bank then it will essentially be a fully operational dual conversion UPS. Long term goal is to put in a bigger battery bank, but I think for now I'll hold off on that expenditure. Looking at about 2k per string. 2 strings will run my rack for about a day. I think 1 string will be enough really... especially once I setup automation to transfer it to solar.
Kind of glad I'm this close to a proper 48v battery backup system. Only been over 10 years since I wanted this lol.
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