高压线和低压线的区别,高压线和低压线的区别知识

2025-03-16 00:11:43
推荐回答(1个)
回答1:

通常,高压线路,是指3~10千伏线路;低压线路,是指220/380伏线路。电工人员清楚地辨别高、低压线路
从外观上:1.市区一般的高压线杆子都是水泥的,0.38KV,1KV.很多老房子离这些高压线只有2-5米,且有时有小型变电站(伏数不高). 2.市区还有一种椎形(水泥杆是等粗的),比水泥杆再高一点,一般起码1KV,不过一般不超3KV. 3.猫头状铁塔,就如叠翠后面的那种,很大,顶端似猫头,一般是10KV,22KV. 4.猫头状铁塔,外形与叠翠后那种相似,但它上面的高压线似蜘蛛网(很多),一般为50KV,55KV,这种等级一般的城市没有只有22KV. 如果有兴趣的话,请你爬到叠翠后面去看一下,铁塔下面的标识上写着22KV且标有代码22开头的数字.
高低压辨别的方法还有以下几种:

(1)高、低压线路分开单独架设时,高压线路电杆之间的距离较低压的大,电杆也较高。

(2)高、低压线路同杆架设时,高压线路在上,低压线路在下;高压线路的横担较低压的长,线间距离较低压的大。

(3)观察绝缘瓷瓶。高压线路的瓷瓶为针式绝缘子(一般为茶褐色)或瓷横担绝缘子(一般为白色),体积较大,低压线路的瓷瓶一般也为针式绝缘子,但为白色,且体积较小。

(4)观看导线的去向。高压架空线一般很少有分支线,其分支线是引到变压器高压侧或引向油等设备;低压架空线一般由变压器低压侧引出、分支或引向用户;高压线路只有三根导线,低压线路一般有四根(三相加一根零线)或两根(火线加零线)导线。

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