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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:& G$ m$ x# M% v2 ~% C) ]
Equipment with such a VDR bridging BASIC INSULATION shall be one of the following:7 O0 B a }" K5 ^, j5 {. m
− PLUGGABLE EQUIPMENT TYPE B; or! n2 p$ L$ a# ~; @# m
− PERMANENTLY CONNECTED EQUIPMENT; or: [( h6 K6 c! t
− equipment that has provision for a permanently connected PROTECTIVE EARTHING
8 K6 Z7 \& s. `CONDUCTOR and is provided with instructions for the installation of that conductor.
e8 C; k7 ~' U1 u- T& ]5 UNOTE In Finland, Norway and Sweden, the third dashed item is applicable only to equipment as defined in the
, g/ e/ ?$ M) |- }# X, W8 jNote to 6.1.2.2.
" K, V6 m) Q) ~# dCompliance is checked by inspection./ x5 b4 m5 g5 ?9 L5 k i, Q
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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