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标题: DSH 404 Enclosures and protective covers [打印本页]
作者: 小米    时间: 2012-11-5 11:43
标题: DSH 404 Enclosures and protective covers
DSH 404
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Enclosures and protective covers# x+ B# a& m! ]2 ]# T
166 ?% e2 z2 `; C0 o1 v* J" g. J
60601-1(ed.2);am1;am2# Q, u6 x* C4 s, q, o6 Z' [
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Standard(s)- (year and edition):
& K' b# P4 |& a, B* z$ u+ h4 V/ @IEC 60601-1:1988 Ed.2 Am1+Am2
  ~+ _3 M) m6 m* H- {Sub clause(s): 16
) O8 G7 k8 q* X' v- \Sheet n°: DSH-404
3 D7 X9 D0 K( g4 r0 c4 M- DSubject: ENCLOSURES and PROTECTIVE COVERS2 `  y; k7 E% H( d
Key words: ENCLOSURES, PROTECTIVE COVERS, SIP/SOP
. u- l1 W( G5 CConfirmed by CTL at its 39th meeting, in Cologne) i1 z: \8 V- e$ Y" k
Question:4 N2 w$ [5 u) D- v6 r5 Q3 o, s
In practice, many standard SIP/SOPs are constructed so that live parts of the SIP/SOPs are
( w. @# _' s: I) Z- V. o6 Taccessible with the standard test finger or, alternatively, the air clearances and/or creepage; N4 w9 O! [! L
distances between these live parts and the standard test finger are too short. This means that
. T! f" J4 M% h2 [0 qthese live parts of SIP/SOPs are to be considered as part of the enclosure and therefore the3 a. u* i* e$ k6 g  \
corresponding enclosure leakage currents shall be measured, and hence, many existing
1 v* ]! q3 ?& `; U4 G# ?7 rstandard SIP/SOPs fail to comply with the standard.
2 z- ]' Y$ y8 tShould, for instance, concession be granted for SIP/SOPs with accessible live parts with a3 r/ l! @3 M2 c6 G# m3 C6 z% o- y; M
voltage (to earth) not exceeding 25V AC or 60V DC?
$ E' z# k. D3 J; f5 \Decision:
& }  g* z/ M% ^! s( f, jInclude SIP/SOP in the list of sub-clause 16e)1.
8 X% W; @1 u8 u( TInstructions for use must contain the warning given in 16a)5., g% Y0 h1 T- Y1 L& V) @
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