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|  DSH 402
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| General requirements& D4 Y5 H1 G7 [. u$ s ^+ c
| 20, 20.1 A-a1)3 E; F. `" U9 P f1 c- d
| 60601-1(ed.2);am1;am2
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e: y d2 e8 |Standard(s)- (year and edition):
; [" L( C( q/ u; C# l" @6 u% j" JIEC 60601-1:1988 Ed.2 Am1+Am2
) o, v$ L# R& s3 F: VSub clause(s): 20, 20.1 A-a1)# x& [6 e' A. y( D4 F% J
Sheet n°: DSH-4025 C0 Z% ?6 o$ s1 V p* ?8 S
Subject: General requirements- ?: D7 ]! S5 z' }
Key words: Basic insulation A-a1, intermediate circuit
6 w& }3 T% u5 c1 ~5 H! \Confirmed by CTL at its 39th meeting, in Cologne
) l5 P& p" C( \) ZQuestion:
. h, B/ z9 c m2 r/ {; wThe requirements in 20.1 would appear to apply also to intermediate circuits which may or may G6 n( x7 Z" H" }
not remain live after interruption of the protective earth conductor.
& Q+ ?( E6 S% A( Z9 zShould A-a1) be applied also in those case where the intermediate circuit ceases to be live after
" _7 ]9 f' ^9 t8 Winterruption of the protective earth conductor?
$ d' ^& I+ N( o* n2 ^/ f: }% LDecision:
2 I0 T" G/ P# s2 A" q$ |Requirements for Basic insulation A-a1) should be applied only to those intermediate circuits. n9 r, c5 Q# r& c5 O, l I+ s7 [, E
which may be hazardous in single fault conditions.
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发表于 2012-11-5 11:48
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