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|  DSH 410
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$ [& J1 ^& ^! a L) B- v: o0 Y | Use of DC supply
# K5 Y) t( f" i& c5 V! E | 16, 20, 19.2
; G5 `" t" O4 n* J6 O' P | 60601-1(ed.2);am1;am2
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# K- ? O) |- F9 fStandard(s)- (year and edition):6 h# b g) Z; E1 p- C7 w
IEC 60601-1:1988 Ed.2 Am1+Am2' U* D. l' S6 O+ ^" a
Sub clause(s): 16, 20, 19.2- h/ m' M: s2 m0 n/ b% V
Sheet n°: DSH-4101 Z. b2 \ I3 r; t
Subject: Use of dc supply, g8 O6 k6 k: Q; N q4 h" s
Key words: dc supply, enclosure
" I* f- N5 i2 u0 P4 U: _8 W) mConfirmed by CTL at its 39th meeting, in Cologne
+ v/ X0 v5 Q0 O* s/ DQuestion:) `+ Q' R* q. O2 }
Some EQUIPMENT is designed for use in ambulances and operated from the vehicle d.c.5 S5 @3 a5 g# D9 J) o# \
supply.with the negative side of the supply connected to the enclosure. Is this acceptable?8 y) f2 g$ e! J& s
Decision:
; r- k# n4 N* R1 M1 YConnection of the negative side of the d.c. mains to the ENCLOSURE should not be permitted.
) B6 |$ t# V% d0 UThe insulation between all poles of the supply and the ENCLOSURE must comply with 20.1 A-a1& D2 T+ q, I$ y, \5 v& `, p
and A-a2.7 U( F# w8 c6 z, L D
Note: Vehicle chassis is considered to be protective earth.
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发表于 2012-11-5 11:32
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