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|  DSH 419
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| Internal battery for back-up power$ u5 k3 Q6 `- e& G5 U; L
| 6.8.2, 6.8.2 e)/ \% U/ H* J' t4 s) f8 A4 {7 U
| 60601-1(ed.2);am1;am2
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Standard(s)- (year and edition):
5 Y# o. ^4 N# A& ~3 a! R( s3 dIEC 60601-1:1988 Ed.2 Am1+Am2
: D& e" d# E# @5 jSub clause(s): 6.8.2 6.8.2 e)) J. \& a7 k; h
Sheet n°: DSH-419
' |; j% R+ H: ?# GSubject: Internal battery for back-up power
2 I; \ R# ^ XKey words: Internal battery, Protective earth terminal
( l% Y T% v7 M& M) X& N# ]Ce confirmed by CTL at its 39th meeting, in Cologne+ Q. V. w8 I/ o1 b/ q% q$ [: w
Question:
! U2 ^& c3 H* w8 kThe requirement in this clause seems to be a little unreasonable. Assume for example,
9 h; x0 ~: e3 ?EQUIPMENT with an internal battery intended for back-up power in the event of a failure of the
/ i* J2 g/ e$ [/ P3 q7 [9 [! k7 XSUPPLY MAINS as a power source. Further, how can one say whether the external
* G! h+ l* r: m) x" V# L7 s1 ^# dPROTECTIVE EARTH CONDUCTOR arrangement is in doubt or not?1 {: H% k% V$ T/ o2 N. e2 M( Q: M
Decision:
; B( a% Y% Q" AThe Instructions for use shall include for CLASS I EQUIPMENT the following statement:* d/ l5 K2 j: G# }5 y' O2 }
“WARNING: THIS EQUIPMENT MUST ONLY BE CONNECTED TO A SUPPLY MAINS/ f& c- F! u- z
WITH PROTECTIVE EARTH.”
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发表于 2012-11-5 11:05
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