How would I go by getting around 2KV ac rms able to support an average current of 15amp and max of 20amp out of 2 lines of 220? And what kind of relay could take that? Looking for a winding ratio.

  • $\begingroup$ Relay or transformer? have you considered that power in = power out? $\endgroup$ – Solar Mike Dec 17 '18 at 8:18
  • $\begingroup$ I’m just looking for a wind ratio for 2 lines of 220vac 50amp to ~2KV 10amp. $\endgroup$ – user18656 Dec 17 '18 at 14:52
  • $\begingroup$ Then you should add that to your question. $\endgroup$ – StainlessSteelRat Dec 17 '18 at 20:56

You cannot get 2kV from a relay unless you have 2kV available.


$$Turns\ ratio = \frac {V_{High}} {V_{Low}}$$

  • $\begingroup$ I know . I’m just wondering what kind of relay takes that. $\endgroup$ – user18656 Dec 17 '18 at 21:02
  • $\begingroup$ Usually a low voltage relay switches a high voltage load. So your relay concept does not make sense. $\endgroup$ – StainlessSteelRat Dec 17 '18 at 21:04
  • $\begingroup$ Im not super experienced in electronics but I figure switching something like that directly would not be a good idea in terms of arcing. $\endgroup$ – user18656 Dec 17 '18 at 21:14
  • $\begingroup$ This is power. To switch it, you have to have it. And yes it is not a good idea. But 220V:2000V is a step-up transformer and it is valid and not inherently dangerous. $\endgroup$ – StainlessSteelRat Dec 17 '18 at 21:21
  • $\begingroup$ 220vac in parallel with a 1:4.5 turn ratio should give me close to what I want at least I think. $\endgroup$ – user18656 Dec 17 '18 at 21:22

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