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发表于 2011-4-13 15:29
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yuqijun 兄弟,首先放电管肯定是满足不了基本绝缘的,就算是MOV挂接在PE上,也是有要求的,不是所有的设备都可以的。见标准如下:. m( t; o7 |2 E' |" O' [& h5 F8 r4 D
Equipment with such a VDR bridging BASIC INSULATION shall be one of the following:
9 Y& Z+ q, h, g1 T! F− PLUGGABLE EQUIPMENT TYPE B; or9 u0 T$ \- T7 I) w, t
− PERMANENTLY CONNECTED EQUIPMENT; or* y3 }$ x( ` x6 `6 V
− equipment that has provision for a permanently connected PROTECTIVE EARTHING
* l. @" I7 b; }% f' f9 NCONDUCTOR and is provided with instructions for the installation of that conductor.
+ u2 m" Y7 W3 k5 MNOTE In Finland, Norway and Sweden, the third dashed item is applicable only to equipment as defined in the) W5 j+ H/ {. v+ V" G% \# ^0 n6 X$ W& ^5 _
Note to 6.1.2.2.
, f; B' f& q: q, _Compliance is checked by inspection.
7 P% W D, F+ C9 v2 W4 j也就是说你的产品要是那三个类型的其中之一,才可以用MOV接在PE上,否则是不行的,标准里面有明文规定。但目前机构内部自己做了一个协议,如果产品不是那三种类型的,可以用MOV和放电管串联,当然还有热保险,这样可以接到PE. |
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