DSH 651 Abnormal operation
http://decisions.iecee.org/icons/ecblank.gif DSH 651
Abnormal operation
19
60335-1(ed.4)
Question:
Can VDR resistors be connected from live parts to earthed metal parts? If yes, can they be accepted under the condition?
Decision:
VDR resistors between live parts and earth can be accepted if the appliance complies with the insulation requirements of the standard, Clauses 13, 16 and 19, and the varistor has a weak part in any part of the circuit in series with it.Varistors are not reliable safety components and can short circuit at any time.
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