Peter,
We are checking with Dupont's expert to see if what we are
concerned now for the 600V or 300V system refers to the
input voltage (primary winding voltage) only. Perhaps you
are right, thanks. But if you can cite any good source
to support this, that would be much helpful to us.
For the
Dear Robin,
If I'm not mistaken the 300 V or 600 V rating for Insulation Systems
per UL1446 is for primary supply voltage and not for the maximum
voltage in any winding.
You state that the transformer is being designed for a 200 C rating.
Remember that you need only comply with UL1446 if your
Robin,
You do not scale the thickness as such when increasing the voltage rating.
Insulation Thickness is directly related to the degree of Mechanical
protection that needs to be achieved. Insulation thickness is only
partially (brain stoppage for lack of a better word!) related to
voltage
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