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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:
1 U: c% R$ m! {; lEquipment with such a VDR bridging BASIC INSULATION shall be one of the following:; a$ p, V% d* c H$ u
− PLUGGABLE EQUIPMENT TYPE B; or7 Z7 h! T! j. A6 t2 T
− PERMANENTLY CONNECTED EQUIPMENT; or+ b4 D( @- K8 o, I
− equipment that has provision for a permanently connected PROTECTIVE EARTHING# Y {% e: z* m' T* a$ v
CONDUCTOR and is provided with instructions for the installation of that conductor.0 R1 Z% z$ k6 ~1 t; k; m
NOTE In Finland, Norway and Sweden, the third dashed item is applicable only to equipment as defined in the
: s y7 q7 j2 \; A% K" fNote to 6.1.2.2.
f3 ]- Y$ ~& d( d% [ C, HCompliance is checked by inspection.9 O$ w; X4 t. D2 @: Z
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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