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标题: DSH 651 Abnormal operation [打印本页]
作者: 小米    时间: 2012-9-8 15:09
标题: DSH 651 Abnormal operation
DSH 651
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Abnormal operation  R- [4 h6 ]! z4 t: A( u
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0 A4 H6 N/ e4 J' J' V0 G0 E) cQuestion:
! e: K0 [$ @1 ?) vCan VDR resistors be connected from live parts to earthed metal parts? If yes, can they be accepted under the condition?
" p4 `1 @; Z; O0 s. mDecision:
" A$ M3 G; B; F4 K6 ?2 NVDR 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.& |, R. ?5 h' O# C' {5 A

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