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ASHP - Am I so unlucky?
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<blockquote data-quote="bladerunnerpv" data-source="post: 544927" data-attributes="member: 35385"><p>Blimey, you don't do things by halves do you! Did you need another multiplus too, or is all 28kWh connected to the one unit? Another Seplos BMS ? </p><p></p><p>Bear with me, I'm a slow learner, how long would all that take to charge ?</p><p></p><p>Assuming supply is coming in through a 63A fuse, then 230V x 63A is ~14.5kW, so less than 2h to fully charge the lot if need be? No. It needs to go from 230V AC to ~48V DC first, which is the inverters job.</p><p></p><p>So the multiplus 5kVA unit has continuous output power of 5000VA or 4000W, so that would make it 28hWh / 4000w = 7hrs?</p><p></p><p>It quotes max charge current of 70A.</p><p>Or the absorption voltage is 57.5V * min(70A,63A) = 3.62kW, so 28hWh / 3.62kW = 7.7hrs?</p></blockquote><p></p>
[QUOTE="bladerunnerpv, post: 544927, member: 35385"] Blimey, you don't do things by halves do you! Did you need another multiplus too, or is all 28kWh connected to the one unit? Another Seplos BMS ? Bear with me, I'm a slow learner, how long would all that take to charge ? Assuming supply is coming in through a 63A fuse, then 230V x 63A is ~14.5kW, so less than 2h to fully charge the lot if need be? No. It needs to go from 230V AC to ~48V DC first, which is the inverters job. So the multiplus 5kVA unit has continuous output power of 5000VA or 4000W, so that would make it 28hWh / 4000w = 7hrs? It quotes max charge current of 70A. Or the absorption voltage is 57.5V * min(70A,63A) = 3.62kW, so 28hWh / 3.62kW = 7.7hrs? [/QUOTE]
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