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|  DSH 419
: Y3 z$ A! S" K' w: G" ^) J& W/ }: s3 W$ W7 O! |5 N2 x+ Y
| Internal battery for back-up power, R) q- M" R; ]5 Q6 I
| 6.8.2, 6.8.2 e)
6 h" L3 H" s. G- \4 _- k | 60601-1(ed.2);am1;am29 b1 K! z6 p- R2 G6 E: W5 e
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1 \" t1 j3 D% X2 Y/ F( z* U6 i) j
Standard(s)- (year and edition):
# c, G, ^2 |( T6 p7 _+ {& W& f( V& ]IEC 60601-1:1988 Ed.2 Am1+Am2
3 m8 B& N: K9 |9 \/ QSub clause(s): 6.8.2 6.8.2 e)$ s/ t5 Y t5 s' Z9 \" W
Sheet n°: DSH-4195 y& B, u! t' O6 [$ f/ L2 p3 x
Subject: Internal battery for back-up power
4 y7 @; z% ~2 d" s0 n, d6 m/ e7 ~Key words: Internal battery, Protective earth terminal
" D Q/ z0 M, N$ }5 {# C5 V9 K/ qCe confirmed by CTL at its 39th meeting, in Cologne* h% Z9 G- ~# G7 o
Question:# j5 W/ {' p# |3 x/ G% G( R7 c
The requirement in this clause seems to be a little unreasonable. Assume for example,' f" Q- ?* Q, b; R* j
EQUIPMENT with an internal battery intended for back-up power in the event of a failure of the
5 q+ |6 R+ s5 d* ?SUPPLY MAINS as a power source. Further, how can one say whether the external
5 @8 r/ [) H: a2 ]PROTECTIVE EARTH CONDUCTOR arrangement is in doubt or not?
9 I0 ]+ ~& z! N! }9 i! pDecision:
2 S* t. p! ~1 B/ AThe Instructions for use shall include for CLASS I EQUIPMENT the following statement:+ ~, v' l! o& V. a- L G; t% |" W
“WARNING: THIS EQUIPMENT MUST ONLY BE CONNECTED TO A SUPPLY MAINS+ I, o% [1 @; L) O/ M8 L6 m
WITH PROTECTIVE EARTH.” L7 \" e4 @0 V. |/ Q7 [% ?" @' u
6 ?+ V7 H6 `& g+ C* {8 c% U2 X/ y' @
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发表于 2012-11-5 11:05
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