In message <[email protected]>,
dated Thu, 10 Sep 2015, =?iso-8859-2?Q?Bo=B9tjan_Glavi=E8?=
<[email protected]> writes:
Therefore I am a bit confused what should we consider for determination
of working voltage. Is it rated voltage (marked on the unit) or we need
to consider also tolerances or even short-term voltage?
Rated voltage range should not be indicated as percentages, but as '470
V - 728 V' in accordance with IEC/EN 61293. Then it's easier to see that
the working voltage for determination of clearance and creepage is at
least 728 V, but may be higher, depending on how over-voltages, if they
occur, are treated in the relevant safety standard.
--
OOO - Own Opinions Only. With best wishes. See www.jmwa.demon.co.uk
When I turn my back on the sun, it's to look for a rainbow
John Woodgate, J M Woodgate and Associates, Rayleigh, Essex UK
-
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