|
|
|  DSH 405 ~8 t; u- I. T' @: _% L& s
`7 n/ ]% v* c
| Leakage current in secondary circuits
& \ t( a, ^7 h. R0 j | 17g), N5 c1 ^4 m3 y: _
| 60601-1(ed.2);am1;am2$ b) s7 ^6 `/ j9 o
|
1 [0 \ Q7 `" w
Standard(s)- (year and edition):6 T! L* Q5 a* r" o
IEC 60601-1:1988 Ed.2 Am1+Am2
7 F+ v. }5 s" JSub clause(s): 17 g)0 a1 x( |9 F4 G. I# v+ U
Sheet n°: DSH-405
( ?0 C# h' U3 K7 ZSubject: Leakage current in secondary circuits
# b+ A1 E; J7 `# ?- ^* [Key words: Leakage current, secondary circuit! A1 i5 ^ r+ e1 A
Confirmed by CTL at its 39th meeting, in Cologne9 H8 ~- r. \7 H/ k
Question:# U3 ?$ Z+ P; U* H6 W
If secondary circuit impedances limit the leakage current, is further investigation of secondary' i$ e, h3 d# A# Y1 {2 S* v2 ?/ X
circuits required? (refer to sub-clause 52.5).: Y. ^5 ^: e: h2 z
Decision:
: ~) i# `2 N% i# u% i- U/ D5 K8 SSecondary circuits providing protective means after short-circuiting of inadequate AIR
8 m5 E* N! |* D% XCLEARANCE and CREEPAGE DISTANCE must be investigated. Failure of components in9 n8 S& B* h+ _! e+ I' U9 X4 z
these circuits shall be investigated as a SINGLE FAULT CONDITION. Failure of such- L+ i% c6 Z' g4 v }
components shall be investigated as a SINGLE FAULT CONDITION.
/ O0 y4 ~6 U$ u6 I7 K- v
; a$ q; z& B7 E9 @ v' l* F$ f& J4 _
|
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
|
/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 11:42
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