DSH 403 Capacitors

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广东安规检测
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DSH 403 , w* D. ?* u+ d! z! ?% v ; s- Y3 [' e8 T* Y& W, z

Capacitors

52.5.9 1 s7 `% y$ @- H. g

60601-1(ed.2);am1;am2

Standard(s)- (year and edition):
IEC 60601-1:1988 Ed.2 Am1+Am2
Sub clause(s): 52.5.9
7 f5 I. Z9 v6 ~9 cSheet n°: DSH-403
8 c2 C  s7 H. O0 a! p+ pSubject: Capacitors
Key words: Capacitors, supply mains
6 p0 g2 i; u3 c) Z9 R" [& p; qConfirmed by CTL at its 39th meeting, in Cologne
2 _9 S: z- }1 n5 \2 p* O% oQuestion:
The Rationale to 57.7 is in contradiction with the requirement in 52.5.9. For instance, any
& m2 x! m1 ^$ |( ncapacitor connected on the SUPPLY MAINS side of mains fuses would, in the case of shortcircuit
) A0 L, x" S* o- M1 Ffault, imply that the safety depends on safety devices external to the equipment in which
' s) Q) r2 ^) X/ Y+ k1 qthe capacitor is mounted.
What shall be required of components connected on the SUPPLY MAINS side of any mains fuse
or OVER-CURRENT RELEASE? For instance, shall capacitors complying with IEC Publication
* w4 W( ~6 u2 [9 [60384-14 be accepted?
" m# u7 ~4 Z8 ~  s  a) F. ^Decision:
5 q, Q/ E0 s4 ^+ N; ^0 h3 NFor these c omponents, compliance with a relevant IEC standard should be sought. If no suitable
+ n$ j  s* w) j3 ~" n4 Vstandard exists, examination of characteristics, evidence of reliability should be researched as
  B0 C0 |# [- k0 `; x9 X) `clause 3.4 suggests (equivalent degree of safety).


4 H9 \+ W1 e! k  G+ D* P& V