|
|
本帖最后由 小米 于 2012-9-12 15:38 编辑 % ]- H# c7 p7 S, y! l9 L! f
1 E e: _. B' {( T2 ~( v" e |  DSH 442 | Interpretation of “in close proximity" or “within a distance of 3 mm"
$ D) v1 I, [9 t9 T E( [ | 30.2
' a0 L5 w: v! H" } f | 60335-1(ed.3)
5 c! }7 W+ V o& v1 t |
1 R* C0 `' H- l' f9 [* r) ^( j
Standard: IEC60335-1:1991, 3rd Ed
! V; j' U7 o8 x3 pSub clause: 30.2. k0 U# ?1 f- Q k3 j: W
Sheet No.: DSH-4428 Q' [; F' N1 w
Subject: Interpretation of “in close proximity" or “within a distance of 3 mm"1 U$ B$ G" A- Q! C
Key words: -close proximity - within a distance of 3 mm
H! f: l; v2 d/ x0 K/ UDecision taken at the 40th CTL meeting 2003.* I# Y) H- A- w: N
Question:. _: n& Q. l8 }2 C0 E, V
In the note of sub-clause of 30.2.2 of IEC60335-1:1991, 3rd Ed. , "In close proximity" is
5 P$ @, y( ], x( j3 W9 yconsidered to be a distance not exceeding 3 mm. Some say the distance means clearance or: v. x6 W3 T3 e1 e# k8 w& f
Creepage distance and the others say it means shortest distance regardless of any non-metallic% w) b. @0 z& V$ T P( C f
materials between them. How should it be interpreted?
3 _" z8 E4 ^! v( [4 p6 t
# b" k j& ?# x) }+ F
0 I! T/ r& y! G; u& I1 s4 k+ C8 J& @' a/ e A0 D0 \1 e
|
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
|
/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 2012-9-12 15:36
提升卡
置顶卡
沉默卡
喧嚣卡
变色卡
抢沙发
千斤顶
显身卡