|
|
|  DSH 507
* ]: Q0 \+ ]0 x" ]3 w. L' @- l+ _2 p9 f' u& Z
| Protection against electric shock
. A- W# z* d, D1 o- c* r$ k9 i | 8.2
_2 r! V2 [ c! f- ?- k4 }* v | 60335-1(ed.3)7 m/ M- I+ O8 X/ l3 p
|
5 g3 j. u! d: Z# j: @
Question:. ]8 [6 @/ R9 C& Z' D& m
Is basic insulation accessible through opening in earthed metal enclosure having paint% ~( F' i0 m( J- A+ L9 E$ h
coating acceptable?
2 f7 N! U( d/ i7 _Rationale:
: D! s) Z4 M$ d1 y% KSee question.
, t+ Q! x+ _1 U/ p7 @: s/ [Decision:) f, _* ~; ^2 x6 X% n% |
If the opening is such that the basic insulation is accessible without making contact at the2 \8 a4 C$ ^4 C4 v
same time with the earthed metal parts, it is considered as a class II construction and thus not
4 B. `8 V8 P% I9 t. lacceptable.4 ` B' D& x3 y. A
If the basic insulation and the earthed metal parts are accessible at the same time, this is- r/ X- B* T0 @3 }4 H- h) e( r1 T
acceptable, as the earthing is one if the protection means.
2 [' j5 l0 l+ q8 B: U+ u; A
& ?5 J" s8 T) R9 N
5 }) h0 r" ^2 b1 |1 s7 R2 I |
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 2012-9-9 17:40
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