brent 发表于 2008-8-19 20:27

关于电线压线架的要求

二类灯具,压线架是金属,在一塑胶外壳内,实验室的工程师说不接受这种结构,要求用塑胶的压线架,但查标准如下:

5.2.10 Luminaires provided with or designed for use with a supply cord or other external
flexible cable or cord shall have a cord anchorage such that the conductors are relieved from
strain, including twisting, where they are connected to the terminals, and such that their
covering is protected from abrasion. It shall be clear how the relief from strain and the
prevention of twisting is intended to be effected. For luminaires supplied without a cable or
cord, suitable test cables or cords of the largest and smallest sizes recommended by the
luminaire manufacturer shall be used for the tests.

It shall not be possible to push the flexible cable or cord into the luminaire to such an extent
that the cable or cord is subjected to undue mechanical or thermal stress. Methods such as
tying the cable or cord into a knot or tying the ends with string shall not be used.

Cord anchorage shall be of insulating material or be provided with a fixed insulating lining if an
insulation fault on the cable or cord could make accessible metal parts live.

红色部分应该说明了这一点,如果绝缘失效而不使可接触金属带电就可以了,因我们压线架的塑胶外壳内,不可能使金属部件带电,应该是符合要求的。

大家有什么看法,是否遇到这样的问题?

4sea 发表于 2008-8-19 22:21

假如电线在压线处绝缘破损,不会导致爬电距离/电气间隙不符合标准的话,用金属压线装置应该也是符合标准的。

brent 发表于 2008-8-20 09:11

引用第1楼4sea于2008-08-19 22:21发表的:
假如电线在压线处绝缘破损,不会导致爬电距离/电气间隙不符合标准的话,用金属压线装置应该也是符合标准的。

對啊, 壓線架在塑膠外殼內, 外殼是密封的,不會影響其它的爬電距離和電氣間隙,可實驗室就是說不接受啊,
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