|
|
|  DSH 402. k# I+ u, H' [1 P& j6 L4 I
" M0 N) j. R. Q: D | General requirements
. M) B5 a! d- Y! W/ Y, I1 c4 s5 ` | 20, 20.1 A-a1)/ [6 G+ z; c6 L' o
| 60601-1(ed.2);am1;am26 t! U! K; Z5 V, [5 A# A6 i
|
/ c' b( b7 v& @# A/ f! z, \5 E4 \
Standard(s)- (year and edition):
+ ~5 D. ^+ R$ f) w1 v7 ^IEC 60601-1:1988 Ed.2 Am1+Am2$ b6 a' K6 ]0 l7 }; I7 U5 K
Sub clause(s): 20, 20.1 A-a1)
- x k% D9 U2 _; A8 [4 B. Z2 OSheet n°: DSH-402. y, R+ c( I8 o* |6 ~1 D1 J
Subject: General requirements. Y( O7 |* {9 r( M) [8 K
Key words: Basic insulation A-a1, intermediate circuit
5 H) z2 Z( _& Z8 E* mConfirmed by CTL at its 39th meeting, in Cologne9 ~/ J2 }: r9 K+ W5 R2 H
Question:5 a/ u8 K! Y! K7 N
The requirements in 20.1 would appear to apply also to intermediate circuits which may or may( O( c" d8 y% w- Z
not remain live after interruption of the protective earth conductor.
# _2 i. ]9 V/ |2 M$ o* [8 SShould A-a1) be applied also in those case where the intermediate circuit ceases to be live after( _8 u4 g/ {9 B8 N" p
interruption of the protective earth conductor?
, C4 l+ B! _ y7 M6 }- SDecision:6 E6 J7 a# b+ i* o# @0 V4 U
Requirements for Basic insulation A-a1) should be applied only to those intermediate circuits
9 v1 ]: \! }6 r2 W1 Rwhich may be hazardous in single fault conditions.: w$ n, h3 r7 }7 J8 k3 e8 }
8 t. d" T8 w0 s) H9 ~
. F3 r* V% Q) d9 M0 ^& M a |
本帖子中包含更多资源
您需要 登录 才可以下载或查看，没有帐号？注册安规
x
|
/2 
|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 11:48
收藏
分享
好帖
鸡蛋
提升卡
置顶卡
沉默卡
喧嚣卡
变色卡
抢沙发
千斤顶
显身卡