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Standard(s)- (year and edition):
5 {9 [3 p T N. G0 c: hIEC 60601-1:1988 Ed.2 Am1+Am21 P. g1 D' e" v4 h5 Z/ x4 Z
Sub clause(s): 52.5.9" N3 O! e: V! J" f' B
Sheet n°: DSH-4030 G/ _1 d) ?3 X6 e
Subject: Capacitors
[% a( M. J* FKey words: Capacitors, supply mains
! E% |7 ~8 a# GConfirmed by CTL at its 39th meeting, in Cologne
; M; p5 G: I" O6 \1 V5 r* ` NQuestion: L, i' Q6 R' E, d6 L- J
The Rationale to 57.7 is in contradiction with the requirement in 52.5.9. For instance, any
: Q5 C" x! M; ^ f* A6 P8 F1 ccapacitor connected on the SUPPLY MAINS side of mains fuses would, in the case of shortcircuit
2 Q$ m% N$ e# W) z% U! v4 `fault, imply that the safety depends on safety devices external to the equipment in which
4 S, r& R3 ~; Sthe capacitor is mounted.
) w6 {# {" S6 C% cWhat shall be required of components connected on the SUPPLY MAINS side of any mains fuse( `$ S7 q2 d' k% M' d' a- Y! X
or OVER-CURRENT RELEASE? For instance, shall capacitors complying with IEC Publication+ w3 L& E% X! ~$ l
60384-14 be accepted?
2 A2 h3 K$ h& {+ M+ B: fDecision:' _# h. ^0 ~ z
For these c omponents, compliance with a relevant IEC standard should be sought. If no suitable
' A0 w! Q0 \9 a9 g& c: H! m3 A) rstandard exists, examination of characteristics, evidence of reliability should be researched as; c0 X; |4 C: j; L& x) G: Q9 `
clause 3.4 suggests (equivalent degree of safety).: `+ q4 q' O) n$ d q, b+ o
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发表于 2012-11-5 11:46
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