三相电一般使用的1.5-2.5平方毫米的铜线。具体应该使用多粗的电线,需要知道用电器的功率,才能选择好具体应该使用电线粗、细。公式是:截面积S=P÷(1.732x380x0.85)÷6(平方毫米)三相380V50HZ交流电2 . 5 ping fang tong xin xian yun xu chang qi fu zai dian liu wei : 1 、6 A —2 5 A
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三相电使用2.5平方的铜芯线比较安全,它的电压是380V,适用于功率较大的工业用电。而家庭使用的电线,只要火线和零线构成单相线,电压达到220V就可以。所以对大功率电器,一定要使用三相电才能保证用电安全。三相电yong 0. 4 5 / 0. 6 k V , ye ke yi yong 0. 6 / 1 k V , 6 ping fang tong xin dian lan jie xi kan bu dong ? mian fei zha kan tong lei ti shi pin jie xi zha kan jie da xiang si wen ti
san xiang dian yi ban shi yong de 1 . 5 - 2 . 5 ping fang hao mi de tong xian 。ju ti ying gai shi yong duo cu de dian xian , xu yao zhi dao yong dian qi de gong lv , cai neng xuan ze hao ju ti ying gai shi yong dian xian cu 、xi 。gong shi shi : jie mian ji S = P ÷ ( 1 . 7 3 2 x 3 8 0x 0. 8 5 ) ÷ 6 ( ping fang hao mi ) san xiang 3 8 0V 5 0H Z jiao liu dian " san xiang dian shi yong 2 . 5 ping fang de tong xin xian bi jiao an quan , ta de dian ya shi 3 8 0V , shi yong yu gong lv jiao da de gong ye yong dian 。er jia ting shi yong de dian xian , zhi yao huo xian he ling xian gou cheng dan xiang xian , dian ya da dao 2 2 0V jiu ke yi 。suo yi zhen dui da gong lv dian qi , yi ding yao shi yong san xiang dian cai neng bao zheng yong dian an quan 。san xiang dian "
2.5平方铜芯线允许期负载电流为: 1、6A—25A用0.45/0.6kV,也可以用0.6/1kV,6平方铜芯电缆解析看不懂?免费查看同类题解析查看解答相似问题
50HZ。电压380V功率50千瓦的电器用多大平方的电缆功率50千瓦算得电流大95平方乘以2.5。50千瓦用多大电缆50kw三相电用多少平方的电线35平方的电5 0H Z 。dian ya 3 8 0V gong lv 5 0qian wa de dian qi yong duo da ping fang de dian lan gong lv 5 0qian wa suan de dian liu da " 9 5 ping fang cheng yi 2 . 5 。5 0qian wa yong duo da dian lan 5 0k w san xiang dian yong duo shao ping fang de dian xian 3 5 ping fang de dian "