<div dir="ltr">Hi Peter,<div> I've built a 100V@100A (12.5V x8 in series) supply you can borrow briefly if you like to test your setup before purchasing.</div><div>/s</div></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Fri, 8 Mar 2019 at 15:41, Peter Harris <<a href="mailto:petes.username@gmail.com">petes.username@gmail.com</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div dir="ltr"><div dir="ltr"><div></div><div>To clarify<br></div><div>I am looking for mains powered DC supplies. The outputs must be floating to allow series connection.</div><div><br></div><div>Re series connection and power. <br></div><div></div><div>P = V x I so power rises in proportion to V<br></div><div>A single supply delivering 20A at 50V yields 1000W</div><div>2 of these in series will deliver
20A at 100V or 2000W<br></div><div> </div><div>The 3 x 1000W 48V supplies in series will deliver
20.83A
at 144V == 3kW<br></div><div><br></div><div>Series connection of PSUs is fine provided their output isolation is sufficient to withstand the combined series voltage. Parallel connection is much more difficult but is not required here.<br></div><div><br></div><div>"Caged" refers to the metalwork enclosing the electronics. Here are the unit's I'm considering<br></div><div><a href="https://www.aliexpress.com/item/Transformer-Switch-Mode-Power-Supply-DC-48V-3A-5A-7-5A-10A-15A-20A-150W-240W/32908080499.html?spm=a2g0s.13010208.99999999.265.1e3f3c002rOuom" target="_blank">https://www.aliexpress.com/item/Transformer-Switch-Mode-Power-Supply-DC-48V-3A-5A-7-5A-10A-15A-20A-150W-240W/32908080499.html?spm=a2g0s.13010208.99999999.265.1e3f3c002rOuom</a><br></div><div><br></div><div>Thanks to all who have responded so far.<br></div><div>I have been to Molten Media unfortunately they had nothing suitable.</div><div>I had not considered a welder, I will do some research.</div><div><br></div><div>I feel a talk at the next meeting coming on :)<br></div><div> P<br></div><div><br></div></div></div>
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