|
|
|  DSH 410$ O5 f9 T8 D2 {
- w# ?' a4 x6 Y9 y% z9 K
| Use of DC supply
$ U6 ?* g% _# y& `3 m D | 16, 20, 19.24 K" w( V# C% S- R6 [: p! X
| 60601-1(ed.2);am1;am2- Q* o' E4 A1 d
|
* g+ X4 @& k0 P( f' yStandard(s)- (year and edition):' X' P2 S: |& R7 U* B
IEC 60601-1:1988 Ed.2 Am1+Am2: T! @: Y/ ] q9 G8 _# e7 Q3 F
Sub clause(s): 16, 20, 19.2
. }& Z/ }# L4 E$ ESheet n°: DSH-4108 a6 u3 `& X0 N& ^
Subject: Use of dc supply' w' g, T+ h: w5 f
Key words: dc supply, enclosure- O( v4 m6 s) b
Confirmed by CTL at its 39th meeting, in Cologne f. e. K& n8 O# G5 k6 P% g8 J
Question:
, A! M( m; ~$ z! Q" X; T' d- xSome EQUIPMENT is designed for use in ambulances and operated from the vehicle d.c.
6 ~! M7 v$ @: f$ f. Q# b; [supply.with the negative side of the supply connected to the enclosure. Is this acceptable?! x6 m2 B7 M7 z3 W
Decision:4 g- l0 C0 P0 G# C, d0 R
Connection of the negative side of the d.c. mains to the ENCLOSURE should not be permitted.
" a$ i/ w8 c9 C# v- p3 k$ E; n8 I5 k1 p5 }The insulation between all poles of the supply and the ENCLOSURE must comply with 20.1 A-a11 V8 g" r% H2 _6 @6 [* I' |5 n
and A-a2.
6 Z% T5 F% R. H1 \Note: Vehicle chassis is considered to be protective earth.
2 |2 g) A% B2 h8 c' ^& u9 R1 a/ r) e) B( A, Z; x/ H
4 \) g4 b4 H7 O |
本帖子中包含更多资源
您需要 登录 才可以下载或查看，没有账号？注册安规
x
|
/1 
|关于安规|小黑屋|安规QQ群|Archiver|手机版|安规网
( 粤ICP13023453-10 ) 
窥视卡
雷达卡
发表于 2012-11-5 11:32
提升卡
置顶卡
沉默卡
喧嚣卡
变色卡
抢沙发
千斤顶
显身卡