零(Ling)序(Xu)电(Dian)流(Liu)保(Bao)护(Hu)的(De)基(Ji)本(Ben)原(Yuan)理(Li)是(Shi)基(Ji)于(Yu)基(Ji)尔(?)霍(Huo)夫(Fu)电(Dian)流(Liu)定(Ding)律(Lu):(?)流(Liu)入(Ru)电(Dian)路(Lu)中(Zhong)任(Ren)一(Yi)节(Jie)点(Dian)的(De)复(Fu)电(Dian)流(Liu)的(De)代(Dai)数(Shu)和(He)等(Deng)于(Yu)零(Ling)。(?)在(Zai)线(Xian)路(Lu)与(Yu)电(Dian)气(Qi)设(She)备(Bei)正(Zheng)常(Chang)的(De)情(Qing)况(Kuang)下(Xia),(?)各(Ge)相(Xiang)电(Dian)流(Liu)的(De)矢(Shi)量(Liang)和(He)等(Deng)于(Yu)零(Ling),(?)因(Yin)此(Ci),(?)零(Ling)序(Xu)电(Dian)流(Liu)互(Hu)感(Gan)器(Qi)的(De)二(?)次(Ci)侧(Ce)绕(Rao)组(Zu)无(Wu)信(Xin)号(Hao)输(Shu)出(Chu),(?)执(Zhi)行(Xing)元(Yuan)件(Jian)不(Bu)动(Dong)作(Zuo)。(?)当(Dang)发(Fa)生(Sheng)接(Jie)地(Di)故(Gu)障(Zhang)时(Shi)的(De)各(Ge)相(Xiang)电(Dian)流(Liu)的(De)矢(Shi)量(Liang)和(He)不(Bu)为(Wei)零(Ling),(?)故(Gu)障(Zhang)电(Dian)流(Liu)使(Shi)零(Ling)序(Xu)电(Dian)流(Liu)互(Hu)感(Gan)器(Qi)的(De)环(Huan)形(Xing)铁(Tie)芯(Xin)中(Zhong)产(Chan)生(Sheng)磁(Ci)通(Tong),(?)零(Ling)序(Xu)电(Dian)流(Liu)互(Hu)感(Gan)器(Qi)的(De)二(?)次(Ci)侧(Ce)感(Gan)应(Ying)电(Dian)压(Ya)使(Shi)执(Zhi)行(Xing)元(Yuan)件(Jian)动(Dong)作(Zuo),(?)带(Dai)动(Dong)脱(Tuo)扣(Kou)装(Zhuang)置(Zhi),(?)切(Qie)换(Huan)供(Gong)电(Dian)网(Wang)络(Luo),(?)达(Da)到(Dao)接(Jie)地(Di)故(Gu)障(Zhang)保(Bao)护(Hu)的(De)目(Mu)的(De)。(?)
作(Zuo)用(Yong):(?)当(Dang)电(Dian)路(Lu)中(Zhong)发(Fa)生(Sheng)触(Chu)电(Dian)或(Huo)漏(Lou)电(Dian)故(Gu)障(Zhang)时(Shi),(?)保(Bao)护(Hu)动(Dong)作(Zuo),(?)切(Qie)断(Duan)电(Dian)源(Yuan)。(?)
使(Shi)用(Yong):(?)可(Ke)在(Zai)三(San)相(Xiang)线(Xian)路(Lu)上(Shang)各(Ge)装(Zhuang)一(Yi)个(Ge)电(Dian)流(Liu)互(Hu)感(Gan)器(Qi),(?)或(Huo)让(Rang)三(San)相(Xiang)导(Dao)线(Xian)一(Yi)起(Qi)穿(Chuan)过(Guo)一(Yi)零(Ling)序(Xu)电(Dian)流(Liu)互(Hu)感(Gan)器(Qi),(?)也(Ye)可(Ke)在(Zai)中(Zhong)性(Xing)线(Xian)N上(Shang)安(An)装(Zhuang)一(Yi)个(Ge)零(Ling)序(Xu)电(Dian)流(Liu)互(Hu)感(Gan)器(Qi),(?)利(Li)用(Yong)其(Qi)来(Lai)检(Jian)测(Ce)三(San)相(Xiang)的(De)电(Dian)流(Liu)矢(Shi)量(Liang)和(He)。(?)