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| DSH 419
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+ ~9 e' O$ c* ]: U | Internal battery for back-up power
{0 o; q3 H; ^% d- s) p. l& h | 6.8.2, 6.8.2 e)5 G U- a1 o! H2 Z
| 60601-1(ed.2);am1;am29 ]% |. m+ e" s$ c
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Standard(s)- (year and edition):
0 B8 w1 d5 ?# y# L; u$ K" T8 v8 m! CIEC 60601-1:1988 Ed.2 Am1+Am2
: K' v# F9 {+ @Sub clause(s): 6.8.2 6.8.2 e)0 ^: B8 m. F/ i9 N4 e) S
Sheet n°: DSH-419; w; m, E/ f2 A" n6 B
Subject: Internal battery for back-up power
9 k- p H2 U- r5 J# aKey words: Internal battery, Protective earth terminal# E: b, K% `- G7 F
Ce confirmed by CTL at its 39th meeting, in Cologne
* A5 ]' t0 l4 \Question:
5 e, g* i8 A9 m! B( HThe requirement in this clause seems to be a little unreasonable. Assume for example,
9 y1 N3 q1 e4 @7 I! L3 t' dEQUIPMENT with an internal battery intended for back-up power in the event of a failure of the& c) f+ d8 q8 z) |; _6 m2 ^
SUPPLY MAINS as a power source. Further, how can one say whether the external. _" d0 c& \& b; _
PROTECTIVE EARTH CONDUCTOR arrangement is in doubt or not?& u$ d. v7 M6 [" Z7 a7 {0 i
Decision:6 t0 q1 L- m* ]- x/ w8 H$ M9 h
The Instructions for use shall include for CLASS I EQUIPMENT the following statement:
, f8 u! g* p$ B. E$ L: }! g“WARNING: THIS EQUIPMENT MUST ONLY BE CONNECTED TO A SUPPLY MAINS+ x1 L! U: e: n1 U4 o
WITH PROTECTIVE EARTH.”' n- t# M- q! Y
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