DSH 419 Internal battery for back-up power

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DSH 419

Internal battery for back-up power : w1 c! O6 Z+ f, A% b

6.8.2, 6.8.2 e)

60601-1(ed.2);am1;am2

Standard(s)- (year and edition):
9 Z* e' S8 Z6 n3 f9 C3 ^. nIEC 60601-1:1988 Ed.2 Am1+Am2
, t. x( \! e" {* k: }% aSub clause(s): 6.8.2 6.8.2 e)
Sheet n°: DSH-419
Subject: Internal battery for back-up power
$ g2 q) U. `" i! X; t% `% BKey words: Internal battery, Protective earth terminal
+ B3 j7 Z0 M+ b( g+ PCe confirmed by CTL at its 39th meeting, in Cologne
2 ^  o. C  }9 q/ ]. ~) o8 u/ ^9 _Question:
The requirement in this clause seems to be a little unreasonable. Assume for example,
EQUIPMENT with an internal battery intended for back-up power in the event of a failure of the
SUPPLY MAINS as a power source. Further, how can one say whether the external
PROTECTIVE EARTH CONDUCTOR arrangement is in doubt or not?
Decision:
The Instructions for use shall include for CLASS I EQUIPMENT the following statement:
/ t  N/ f% j. l2 j0 r“WARNING: THIS EQUIPMENT MUST ONLY BE CONNECTED TO A SUPPLY MAINS
WITH PROTECTIVE EARTH.”