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低压电器设备安装方法是什么

低压电器设备安装方法是什么

浏览：53次 | 提问时间： 08-03 08:59

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雷雨天 08-03 09:00

你好，：电气设备的金属外壳接地，不是随便处理就行的，它是将接地体或称接地装置，按一定要求埋入地中。接地装置包括接地极与接地线两部分。其安装要求和方法是：接地极一般多用钢管、钢筋、角铁之类金属制成；接地线为接地极与电气设备外壳的连接线。 (1)接地极：如用钢管，其直径一般为20～50mm；钢筋的直径为10～12mm；角铁为20mm×20mm×3mm或者50mm×50mm×5mm规格。长度约2.5～3m。垂直埋入地下。 (2)接地线：*铜线、铝线、钢线都可作为接地线，铝线易断最好不用。铜线截面积不应小于4mm²，铝线截面积不小于6mm²。接地线与接地极最好采用焊接方法连接。与设备相接时需用螺栓拧紧固牢。为了使接地装置发挥作用，关键是接地电阻Rd要小，一般要求保证接地电阻Rd不大于10Ω。有时受到土壤地下水位等因数的影响，往往接地电阻太大保证不了要求的数值。因此可适当增加接地极根数(接地极间距离不小于2.5m)，土壤可埋些黏土，适当加食盐和木炭等混合物。

太多的伤我诠释不去 08-03 09:08

低压电器设备安装方法是：先根据需要设计一次线路的排布与布置出一次单线图。随后才是根据规范细化为原理图。元件的安装紧固件应做成能在正面紧固及松托。很好控制，比如控制线路12v24v36v110v220v380v，主电路220v或者380V，主要控制线路和主电路要分清楚就可以了。

人丑嘴不甜长得危险还没钱神经质 08-03 09:17

1. 电气设备应有足够的电气间隙及爬电距离以保证设备安全可靠的工作. 2. 电气元件及其组装板的安装结构应尽量考虑进行正面拆装。 3. 如有可能，元件的安装紧固件应做成能在正面紧固及松托。 4. 各电器元件应能单独拆装更换，而不影响其他元件及导线束的固定。 5. 发热元件宜安装在散热良好的地方，两个发热元件之间的连线应采用耐热导线或*铜线套瓷管。 6. 二极管、三极管及可控硅、矽堆等电力半导体，应将其散热面或散热片的风道呈垂直方向安装，以利散热。 7. 电阻器是等电热元件安装一般应安装在箱子的上方，安装方向及位置应考虑到利于散热并尽量减少对其它元件的热影响。 8. 柜内的*元件的布置要尽量远离主回路、开关电源及变压器，不得直接放置或靠近柜内其他发热元件的对流方向。

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