DSH 403 Capacitors

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广东安规检测
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DSH 403

Capacitors / w2 u: j) J' N3 w) R

52.5.9

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

8 N) d, [; @, X/ H4 F$ Y& r4 aStandard(s)- (year and edition):
6 y7 }& z) T: N3 x$ ?! n5 q4 YIEC 60601-1:1988 Ed.2 Am1+Am2
Sub clause(s): 52.5.9
Sheet n°: DSH-403
: M* s. q7 C- aSubject: Capacitors
Key words: Capacitors, supply mains
- K. O; x! q  E* }1 R: I7 FConfirmed by CTL at its 39th meeting, in Cologne
Question:
8 m( w8 V1 M. Q! w( O7 \7 mThe Rationale to 57.7 is in contradiction with the requirement in 52.5.9. For instance, any
1 [) O5 u# v+ @2 K8 h+ ]) q% `. vcapacitor connected on the SUPPLY MAINS side of mains fuses would, in the case of shortcircuit
fault, imply that the safety depends on safety devices external to the equipment in which
6 [( A& w4 i% ?# l1 T+ i, `1 jthe capacitor is mounted.
What shall be required of components connected on the SUPPLY MAINS side of any mains fuse
+ E4 Y* [/ ]! ^- Yor OVER-CURRENT RELEASE? For instance, shall capacitors complying with IEC Publication
60384-14 be accepted?
% m& }& D* R/ X1 UDecision:
; j% q' W5 v& {For these c omponents, compliance with a relevant IEC standard should be sought. If no suitable
standard exists, examination of characteristics, evidence of reliability should be researched as
% w2 R: @! \' y7 w! p; M( dclause 3.4 suggests (equivalent degree of safety).

! q8 J& [+ I; T) v3 o1 f
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