DSH 405 Leakage current in secondary circuits

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DSH 405 * b% O- G) I* M+ k% F1 c

Leakage current in secondary circuits

17g)

60601-1(ed.2);am1;am2 1 D, o+ k5 a- [' g- a

1 b; G  L! c- J' h1 Y* g. t  z& H# aStandard(s)- (year and edition):
IEC 60601-1:1988 Ed.2 Am1+Am2
Sub clause(s): 17 g)
. E9 z, C" t0 C; c/ LSheet n°: DSH-405
Subject: Leakage current in secondary circuits
Key words: Leakage current, secondary circuit
Confirmed by CTL at its 39th meeting, in Cologne
$ \9 N6 P' P6 M+ wQuestion:
( M+ _$ d" Y- s* H  {* E$ qIf secondary circuit impedances limit the leakage current, is further investigation of secondary
8 x! y5 N+ F8 `* C7 {0 Q: icircuits required? (refer to sub-clause 52.5).
Decision:
( F% t) R3 c, w  [Secondary circuits providing protective means after short-circuiting of inadequate AIR
CLEARANCE and CREEPAGE DISTANCE must be investigated. Failure of components in
$ F  a* \5 U# |4 {1 r. f: Qthese circuits shall be investigated as a SINGLE FAULT CONDITION. Failure of such
components shall be investigated as a SINGLE FAULT CONDITION.

+ n8 q6 P" V4 \( _- ?