DSH 405 Leakage current in secondary circuits

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DSH 405 4 @+ x) ?6 E% Y

Leakage current in secondary circuits ( U+ X8 C! o% h$ C# [" @/ E

17g)

60601-1(ed.2);am1;am2 0 ^& x" X2 M3 S3 @- w2 m, i

Standard(s)- (year and edition):
3 d: M1 L3 R1 A) r$ d5 Q0 w$ PIEC 60601-1:1988 Ed.2 Am1+Am2
Sub clause(s): 17 g)
! ?8 v) R8 [8 x# |7 pSheet n°: DSH-405
Subject: Leakage current in secondary circuits
: l$ o* H4 F, i8 j2 V. G' T0 ^Key words: Leakage current, secondary circuit
Confirmed by CTL at its 39th meeting, in Cologne
2 ]! d) F  `9 A9 d; YQuestion:
If secondary circuit impedances limit the leakage current, is further investigation of secondary
& N! \; F* e9 y( N5 d) S% gcircuits required? (refer to sub-clause 52.5).
, X4 j" r: f+ Z2 nDecision:
- H4 Y+ n1 \2 Z# `' fSecondary circuits providing protective means after short-circuiting of inadequate AIR
! A4 D' x3 U2 }- aCLEARANCE and CREEPAGE DISTANCE must be investigated. Failure of components in
# K% T3 s) j* fthese circuits shall be investigated as a SINGLE FAULT CONDITION. Failure of such
components shall be investigated as a SINGLE FAULT CONDITION.
: L, Z* w) L! e% s! C$ L2 m. ^

6 j+ N2 \* U  L2 n1 m8 C- q7 O