DSH 403 Capacitors

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广东安规检测
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DSH 403   W0 h+ ~2 O7 y: G- F; O9 }# _ ! q/ ~( j# c% U* d/ S

Capacitors 2 U/ w5 ~& T  L" `, A. U

52.5.9 7 j- l* ^( e3 q8 y2 y7 _

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
, V6 m* @) |& Q/ G5 z4 GSheet n°: DSH-403
Subject: Capacitors
( d. H7 b: O' }2 @" _. u7 RKey words: Capacitors, supply mains
. d" M' \+ N1 X. y. L8 D( S) b$ nConfirmed by CTL at its 39th meeting, in Cologne
3 [' S6 a8 X; yQuestion:
9 H& U" ?# ?' s5 @  [& O* `3 ?  bThe Rationale to 57.7 is in contradiction with the requirement in 52.5.9. For instance, any
7 T# _0 J* `. g& s6 K: Gcapacitor connected on the SUPPLY MAINS side of mains fuses would, in the case of shortcircuit
1 z3 ?( M# d, i$ p, B; Kfault, imply that the safety depends on safety devices external to the equipment in which
0 [$ |1 m' L9 ?& Y5 t  H/ 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
60384-14 be accepted?
Decision:
For these c omponents, compliance with a relevant IEC standard should be sought. If no suitable
3 l- I1 \. X* t: }! `! X# Mstandard exists, examination of characteristics, evidence of reliability should be researched as
* x( b, d2 x# V7 r- Kclause 3.4 suggests (equivalent degree of safety).
+ o  h6 g) k7 c

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