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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 4044 t( A& M3 E) o

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Enclosures and protective covers* a5 x1 ^) _  p3 z5 p$ q* m
16! Y( P+ P, [) ~* @
60601-1(ed.2);am1;am2
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- _7 J8 I" H# H* t  m8 I* YStandard(s)- (year and edition):  i% ~! v  O  d1 [& m6 {
IEC 60601-1:1988 Ed.2 Am1+Am2
* s& B# _' d0 Y1 kSub clause(s): 16
( Q9 A* M" y4 ~0 G) @Sheet n°: DSH-404" c: P! H- E; w: }6 I, L- l/ o
Subject: ENCLOSURES and PROTECTIVE COVERS, d7 \" G# `' H3 Z/ g8 X" p& \$ v
Key words: ENCLOSURES, PROTECTIVE COVERS, SIP/SOP
1 ]2 s4 c8 `7 n. i( k4 mConfirmed by CTL at its 39th meeting, in Cologne2 U) K5 H( q; M) O* @0 b, [% k
Question:
/ @0 y8 J: w3 jIn practice, many standard SIP/SOPs are constructed so that live parts of the SIP/SOPs are
- r2 c! u5 ?8 W; _& W  l4 P1 baccessible with the standard test finger or, alternatively, the air clearances and/or creepage# Z- \( \* M8 [9 ^4 r
distances between these live parts and the standard test finger are too short. This means that7 c% N) ?1 @' M6 ~" `7 `1 j0 p
these live parts of SIP/SOPs are to be considered as part of the enclosure and therefore the
( |/ F: N$ H  k" R& a8 n# Q. d. jcorresponding enclosure leakage currents shall be measured, and hence, many existing& u# y3 |* O* P: w2 @
standard SIP/SOPs fail to comply with the standard.9 U/ y4 m8 f; K$ ~& O$ ]! \
Should, for instance, concession be granted for SIP/SOPs with accessible live parts with a$ R9 ]0 Y' Y$ y1 T7 K9 p- g
voltage (to earth) not exceeding 25V AC or 60V DC?
6 a) p  I* [  u1 f! I6 |# _' ]2 gDecision:* J6 j& o: T( e# O3 p
Include SIP/SOP in the list of sub-clause 16e)1.
: i3 f+ u8 x1 p, vInstructions for use must contain the warning given in 16a)5.
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9 M$ d5 v0 z( M  z& ]& k# p[attach]77104[/attach]
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