DSH 419 Internal battery for back-up power

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广东安规检测
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DSH 419 % O5 y5 w/ F4 [" u3 B

Internal battery for back-up power

6.8.2, 6.8.2 e) " K% r& V- W/ {- C2 ]9 a5 @+ y

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

: S) `4 K8 q: I2 r% n' S! E8 ]Standard(s)- (year and edition):
IEC 60601-1:1988 Ed.2 Am1+Am2
* @: L: D" {9 W& G0 GSub clause(s): 6.8.2 6.8.2 e)
! q! i7 H4 r  M( S; ]! i& KSheet n°: DSH-419
$ H3 T  X, _' g( e6 uSubject: Internal battery for back-up power
: r; e! j9 X2 h' ?Key words: Internal battery, Protective earth terminal
& t! D. X- H4 D! i* a3 s0 _Ce confirmed by CTL at its 39th meeting, in Cologne
Question:
! w9 ^" A$ B5 {- s8 @- BThe 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?
# q& U. k0 c& {* I  pDecision:
" K5 h; B) e+ l- t: o5 o5 O4 uThe Instructions for use shall include for CLASS I EQUIPMENT the following statement:
“WARNING: THIS EQUIPMENT MUST ONLY BE CONNECTED TO A SUPPLY MAINS
) S( t4 [! S( {2 Z: F" QWITH PROTECTIVE EARTH.”
, W$ ]" G7 Q; {3 S! V
  N; E! c6 L) N+ l# g) R' F