已解决问题
用户光端机防范雷击的具体办法?
提问者:shiru666
|
提问时间:2011-8-18 09:52
用户光端机防范雷击的具体办法?大家这里夏天经常打雷,一打雷就会出现大量障碍,其中多数是光端机被打坏,请问有没有好的防范雷击的办法?
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最佳答案
dengxsz 的答案
( 采纳时间:2011-8-22 09:19 )
雷电不会从光纤进来,所以光端机被雷击主要是通过电源和支路电缆中传进。解决防雷的前提条件是机房的接地要好。机房接地电阻至少要要小于1欧姆。接地不好,后面采用什么方法都是空的。光端机一般都有工作地和保护地,从防雷的角度,工作地和保护地要分开接(有些厂家把工作地和保护地在光端机子架里接在一起了,这样不利于防雷击)。机房保护地在一点接入大地,并且保证接地电阻符合要求。机房接地符合要求以后,在机房电源和配线架(如VDF)上安装防雷保护装置,保护装置的接地接入保护地。机柜也接入保护地。接地和防雷保护装置做好以后,就可以防雷击了。我遇到过多起这样的案例,有的是是施工时没有按照规范做,有的是机房接地没有做好(有个例子,有个在贵州一座山上的机房,由于是石头山,没有土,机房接地电阻居然有50多欧姆,等于没接地,想了很多办法都没用,后来花了几百万将接地线装置引到山下,最后才解决问题)。
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回答时间:2011-8-18 13:14
该答案得到 5 个回应 我要回应
shiru666 | 2011-8-22 09:19
谢谢大虾,我又咨询了几个人,你的方法非常好,可惜大家领导不大重视
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