|
|
|  DSH 4194 a" C1 n: }8 c& } M& ?
2 J i; s0 B- Y2 k M& D | Internal battery for back-up power: R8 C" T' ~, O' ^, O: ~% n; d6 I( K6 b
| 6.8.2, 6.8.2 e)
5 k% J. p# T7 Y- h" y( D | 60601-1(ed.2);am1;am27 d {; O- k' i1 d6 S5 G
|
9 r! x# s* I" n; Q) u* f& k& HStandard(s)- (year and edition):
3 f9 q9 n4 y8 d! o5 BIEC 60601-1:1988 Ed.2 Am1+Am28 Y [" e) ?' P( L
Sub clause(s): 6.8.2 6.8.2 e)
( a- A8 B" k B, U" ~- e, MSheet n°: DSH-419
$ ]' Y7 y$ U! ]8 G. {) g+ pSubject: Internal battery for back-up power z# u& _! y. ~) h& B, ^4 l
Key words: Internal battery, Protective earth terminal* u1 Y! S$ d& c- r2 Q- [0 b4 [
Ce confirmed by CTL at its 39th meeting, in Cologne
0 ?+ A& P/ a$ H( W+ A% g, uQuestion:
: `3 `5 O6 D7 `0 V% G7 @; v" lThe requirement in this clause seems to be a little unreasonable. Assume for example,- V! Q% O4 ]( s+ r
EQUIPMENT with an internal battery intended for back-up power in the event of a failure of the3 c( {# ?1 i% Y
SUPPLY MAINS as a power source. Further, how can one say whether the external1 x2 w" [: q1 b. V: Z; W
PROTECTIVE EARTH CONDUCTOR arrangement is in doubt or not?
9 y' d8 B [" C. R: F$ i+ P9 d! ?( PDecision:
! X. _$ E3 w: a0 R7 J/ |The Instructions for use shall include for CLASS I EQUIPMENT the following statement:; e/ s- C5 v! w' g5 ~! t
“WARNING: THIS EQUIPMENT MUST ONLY BE CONNECTED TO A SUPPLY MAINS$ [) j4 {! p) i, A. s
WITH PROTECTIVE EARTH.”/ B: |9 z; h$ W. |# I7 y
- K5 }1 ^; @( h; \2 l! C- M
4 w/ I4 }$ ~7 a- v |
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发表于 2012-11-5 11:05
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