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防雷设计方案是什么?_其他_设计456问答
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防雷设计方案是什么?

浏览:56次 | 提问时间: 07-30 10:28
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5个答案
干净的情话 07-30 10:28

为了保护建筑物和建筑物内各向*网络设备不受雷电损害或使雷击损害降低到最低程度,应采取综合防雷,综合防雷设计方案应包括两个方面:直击雷的防护和感应雷的防护,缺少任何一方面都是不完整的,有缺陷的和有潜在危险的。  雷电防御常识  发生在雷*云(积雨云)风、云与云、云与地、云与空气之间的击空放电现象,常伴有强烈的闪光和隆隆的雷声。  室外防雷:  1  应迅速躲入防雷设施保护的建筑物内,或者很深的山洞里,*内是躲避雷击的理想地方。  2  远离树木、电线杆、烟囱等尖耸、孤立的物体。不宜进入孤立的棚屋、岗亭等低矮建筑物。绝对远离输电线。  3  找一块地势低洼的地方蹲下,双脚并拢,手放膝上,*前屈。注意不要人*集中在一起或牵手靠在一起。  4  在空旷的场地,不要打雨伞,把锄头等金属工具扛在肩上。  5  切游泳或从事水上作业,尽快离开水面及其他空旷场地。  6  雷电天气不宜开摩托车、骑自选车赶路,打雷时切忌狂奔。

如果不是一句话 07-30 10:37

交流电源防雷模块适用于配电室、配电柜、开关柜、交直流配电屏、通信、*、电力、网络、能源、铁路、公路等系统的电源保护;·  建筑物内有室外输入的配电箱、建筑物层配电箱;·  用于低压(  220/380VAC)工业电网和民用电网;·信号防雷器用于线路侵入的过电压保护;避雷针用于直击雷防护;  在电力系统中,  主要用于自动化机房、变电站主控制室电源屏内三相电源输  入或输出端。

隐形人 07-30 10:45

直击雷防护:   直击雷防护装置,它由接闪部分,引下线和接地装置组成,是防止直击雷的有效措施,它们将雷电经引下线导入地下,从而保护在其覆盖范围内的工作人员、电气设备、线路和建筑物,免遭直击雷击。因而接闪器设计必须满足高性能、安全可靠的要求。  PT-限流避雷针  PT-限流避雷针对雷电流具有衰减作用,减弱雷电流的泄流强度,从而减弱周围电磁感应强度,使附近地区的金属线路和*设备受到干扰的程度大大降低。雷电发生闪击后,PT-限流避雷针能有效地将可能发生的几千安到上百千安的雷电流变成数千安入地。避免了传统避雷针接闪后的强电流入地产生的二次效应,减弱了大电流入地出现的反击和强电磁干扰产生的感应过电压。  PT-先导避雷针  PT-先导避雷针是将雷电提前先导并泄入大地,使被保护物免遭直接雷击的防雷装置,避雷针安装一定要高于被保护物,一般安装在建筑物顶的铁塔或杆塔上。PT-先导避雷针能在雷云电场的作用下,产生提前先导通道,使雷电在保护范围内发生闪击时能准确地闪击在避雷针上,避免了传统避雷针的“侧击”和“绕击”现象。因PT-先导避雷针的入地电流也较少,所以它是防直击雷的理想设备。

夏有森光暖无疑 07-30 10:53

1、外部防雷包括避雷针、避雷带、引下线、接地极等等,其主要的功能是为了幕确保建筑物本体免受直击雷的侵袭,将可能击中建筑物的雷电通过避雷针、避雷带、引下线等,泄放入大地.2、内部防雷系统是为保护建筑物内部的设备以及人员的安全而设置的.通过在需要保护设备的前端安装合适的防雷器,使设备、线路与大地形成一个有条件的等电位体.将可能进入的雷电流阻拦在外,将因雷击而使内部设施所感应到的雷电流得以安全泄放入地,确保后接设备的安全.

深酒 07-30 11:01

目前各种建筑大楼大多数仍采用避雷针(带)保护建筑物的安全,经多年使用避雷针(带)防止直击雷害,不但是行之有效的方法,而且是非常经济的措施。但是,随着现代*技术的不断发展,精密*设备被广泛应用在各行业的计算机、通信网络的运行系统中。这些高精度的微*计算机设备内置大量的CMOS半导体集成模块,导致过压、过流保护能力极其脆弱。(美国通用研究公司提供磁场脉冲超过0.07高斯,就可引起计算机失效;磁场脉冲超过2.4高斯就可以引起集成电路永久性损坏。)无法保证在特定的空间遭受雷击时仍能安全运行。*通信机房内有多种精密的设备如交换设备、传输设备等,而这些精密设备的耐过电压水平却都很低,越是精密的设备在出现过电压时越是显得脆弱,尤其是发生雷击事件时,这些贵重的精密设备的安全就完全没有保障。近几年来因雷电过电压引起*通信设备损坏的事例屡见不鲜,而且由此带来的损失更是惨重,以致我们不得不重视这个问题。我们结合移动通信大楼的具体情况,确保移动通信大楼设备的安全和正常工作,确保建筑物、站内工作人员的安全,提高网络运行的安全系数。

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