|
|
|  DSH 403, Z k* P$ ?) x/ b
+ \+ g7 M) j" N* G/ _
| Capacitors$ ?# l3 C( E; E9 |! B
| 52.5.9
. @8 k) z4 m+ R d6 k) @ | 60601-1(ed.2);am1;am2! {: G: n' p- b L
|
/ B" G! J, l4 X. `6 Z/ hStandard(s)- (year and edition):
2 W- O( [6 Z* o$ {9 WIEC 60601-1:1988 Ed.2 Am1+Am2/ }& A& `1 o; N
Sub clause(s): 52.5.9
1 J" y, m" T) y& P7 l5 E" e" I( |Sheet n°: DSH-403
4 K* O5 \( V/ k. e+ I- FSubject: Capacitors
6 e7 p% k u7 |Key words: Capacitors, supply mains9 S$ w3 K4 y8 w0 o- ?
Confirmed by CTL at its 39th meeting, in Cologne
, ~1 }" A3 l. X/ Q. V! TQuestion:
$ i6 P; |# N7 ?* V; N: E4 pThe Rationale to 57.7 is in contradiction with the requirement in 52.5.9. For instance, any. s( a& E1 R# k' f7 @3 H
capacitor connected on the SUPPLY MAINS side of mains fuses would, in the case of shortcircuit
# j# j/ a" H! V, Nfault, imply that the safety depends on safety devices external to the equipment in which! o- p0 `8 w/ D& P+ m5 Z2 t
the capacitor is mounted.) r& k' S% F: I7 U, ]$ N4 ]
What shall be required of components connected on the SUPPLY MAINS side of any mains fuse* n# ~6 \+ U4 P' h
or OVER-CURRENT RELEASE? For instance, shall capacitors complying with IEC Publication
+ g" q& }3 T6 F! d, x- {3 E$ j60384-14 be accepted?
: b) L% t4 }* uDecision:
9 n! T* T* t, L% x8 m* k4 `3 P3 SFor these c omponents, compliance with a relevant IEC standard should be sought. If no suitable
6 D1 b8 S, t. tstandard exists, examination of characteristics, evidence of reliability should be researched as
$ Z) H4 b- C" T9 Lclause 3.4 suggests (equivalent degree of safety).
$ _. B& L' F0 A" n% B% g
) U3 J* c0 @/ [
* ~4 m+ p: C9 s5 L: \ |
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发表于 2012-11-5 11:46
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