High-voltage limits and insulation on (toroidal) transformers

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mbrennwa

mbrennwa

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Joined 2005
audioroot.net
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#1
I asked Toroidy to make a toroidal transformer with the following windings:
  • Primary: 2 x 115 VAC
  • Secondary-1: 350 VAC / 200 mA
  • Secondary-2: 350 VAC / 200 mA
  • Secondary-3: 420 VAC / 70 mA
They told me they can't make this due to concerns with high-voltage insulation. I don't know much about transformers, so I didn't think of this issue.

What are your thoughts? Is this really not possible? How much am I stretching the limits? Would another company be able to make a transformer according to my specs?
 
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