75kw电机用多大的空开
问题
75kw电机用多大的空开
电工接两联开关,开关上有四个接线柱可线盒只有三根电线,该怎么接线,【电工常识】家庭配电箱开关如何选择?,家里的C63总开关能载多大的电流?支路为什么7.5KW电机严禁用C20空开?电工同行都知道,谁都不敢用
dian qi jian xuan xing ,zhe ge gong lv de dian ji xu yao pei duo da de jie chu qi he kong kai ,shi pin bo fang liang 1 1 4 5 、dan mu liang 0、dian zan shu 1 5 、tou ying bi mei shu 3 、shou zang ren shu 2 9 、zhuan fa ren shu 0,shi pin zuo zhe dian " 电气件选型,这个功率的电机需要配多大得接触器和空开,播放量1145、弹幕量0、点赞数15、投硬币枚数3、收数29、转发数0,作者电
1 . dan xiang dian ji dian liu 5 000/ 2 2 0= 2 2 . 7 A xuan yong D xing 2 5 A huo 3 2 A 2 . san xiang dian ji you 5 . 5 K W ( ni de dian ji shi 5 K W ) an 1 1 A dian liu ji xuan yong D xing 1 6 A kong kai xuan xing da yu deng yu dian ji ming pai e ding dian liu 。yi ban bu jian yi deng yu shao wei da yi dian jiu hao , bu ran kong kai ai tiao , guo da kong kai bu tiao , chu fei ni hui lu li you guo zai bao hu ye jiu shi re ji san xiang dian ji ke yi an zhao mei qian wa 2 A lai ji suan e ding dian liu 。7 . 5 qian wa dian ji e ding dian liu zai 1 5 A zuo you , ke yi xuan ze 2 0A de kong qi kai guan 。wei shen me 7 . 5 K W dian ji yan jin yong C 2 0kong kai ?dian gong tong xing dou zhi dao ,shui dou bu gan yong
dian gong jie liang lian kai guan , kai guan shang you si ge jie xian zhu ke xian he zhi you san gen dian xian , gai zen me jie xian , 【dian gong chang shi 】jia ting pei dian xiang kai guan ru he xuan ze ? , jia li de C 6 3 zong kai guan neng zai duo da de dian liu ? zhi lu " 1.单相电机电流5000/220=22.7A选用D型25A或32A 2.三相电机有5.5KW(你的电机是5KW)按11A电流计选用D型16A 空开选型大于等于电机铭牌额定电流。一般不建议等于稍微大一点就好,不然空开爱跳,过大空开不跳,除非你回路里有过载保护也就是热继三相电机可以按照每千瓦2A来计算额定电流。7.5千瓦电机额定电流在15A左右,可以选择20A的空气开关。
如果是三相电路,额定电压值为380伏,一般建议用25A安或者32安的空开,如果是单相电路,额定电压值为220伏,一般建议用34安或者51安的空开。因为空ru guo shi san xiang dian lu ,e ding dian ya zhi wei 3 8 0fu ,yi ban jian yi yong 2 5 A an huo zhe 3 2 an de kong kai ,ru guo shi dan xiang dian lu ,e ding dian ya zhi wei 2 2 0fu ,yi ban jian yi yong 3 4 an huo zhe 5 1 an de kong kai 。yin wei kong "
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