lao gu dong lao zhi qian le ,3 8 0v 3 9 qian wa yong duo da dian lan ,ke yi qiang zhi de zhong ji ,song dian jiu bao zha ,4 P de lou dian duan lu qi dang 2 P de zen me yong ,dian ji xiao jiao ,zhe yang hu tao xian ni jian guo ma 选择25平方毫米的铜芯线(电缆)偏紧,选择35平方毫米的铜芯线(电缆)有一定裕度,符合选择原则。首先计算电机运行电流,并设定它的功率因数为0.75,则电机的运行电流选择I=45/1.732/0.38/.75 =91.16A。
wen da xiang qing Q & a m p ; A D E T A I L S yi qi lai kan kan da jia de zhuan ye jie da ba !yi you 3 tiao da an zhang tao hui da shu :1 | bei cai na :0xing san jiao qi dong 1 6 ping fang ,qi ta qi dong fang shi 2 5 ping fang wang hao yu hui da shu :1 | 老古董老值钱了,380v39 千瓦用多大电缆,可以强的中继,送电就爆炸,4P的漏电断路器当2P的怎么用,电机啸叫,这样护套线你见过吗
问答详情Q&A DETAILS 一起来看看大家的专业解答吧!已有3 条答张滔回答数:1 | 采纳:0 星三角启动16平方,其它启动方式25平方王浩宇回答数:1 | xuan ze 2 5 ping fang hao mi de tong xin xian ( dian lan ) pian jin , xuan ze 3 5 ping fang hao mi de tong xin xian ( dian lan ) you yi ding yu du , fu he xuan ze yuan ze 。shou xian ji suan dian ji yun xing dian liu , bing she ding ta de gong lv yin shu wei 0. 7 5 , ze dian ji de yun xing dian liu xuan ze I = 4 5 / 1 . 7 3 2 / 0. 3 8 / . 7 5 = 9 1 . 1 6 A 。
45千瓦的电机用多大的电缆45KW三相电机(380V)的额定电流约80A,则最小要用70平方的铜电缆。45KW三相电机(380V)的额定电流约80A,则最小要4 5 qian wa de dian ji yong duo da de dian lan 4 5 K W san xiang dian ji (3 8 0V )de e ding dian liu yue 8 0A ,ze zui xiao yao yong 7 0ping fang de tong dian lan 。4 5 K W san xiang dian ji (3 8 0V )de e ding dian liu yue 8 0A ,ze zui xiao yao "