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國電(dian)(dian)南自PSL646U綜合保(bao)護(hu)裝置(zhi)(zhi) PSL 646U 基本型(xing)裝置(zhi)(zhi)以光(guang)纖(xian)電(dian)(dian)流(liu)差動(dong)(dong)保(bao)護(hu)為主保(bao)護(hu)，輔助以電(dian)(dian)流(liu)保(bao)護(hu)及(ji)三相重(zhong)(zhong)合閘(zha)等(deng)功(gong)能(neng)。它適(shi)(shi)用(yong) 于 110kV 以下電(dian)(dian)壓等(deng)級的(de)輸配(pei)電(dian)(dian)線(xian)路，特別適(shi)(shi)用(yong)于像環(huan)網、雙回線(xian)等(deng)保(bao)護(hu)選擇性要求高的(de)線(xian)路，比如(ru)地(di)鐵 的(de)交流(liu)聯絡線(xian)、電(dian)(dian)廠的(de)低壓出線(xian)、城網和配(pei)網的(de)重(zhong)(zhong)要聯絡線(xian)、重(zhong)(zhong)要負荷的(de)進線(xian)等(deng)。 D 型(xing)裝置(zhi)(zhi)適(shi)(shi)用(yong)于 35kV 及(ji)以下電(dian)(dian)壓等(deng)級的(de)雙圈(quan)變(bian)(bian)壓器的(de)線(xian)路變(bian)(bian)壓器組(zu)光(guang)纖(xian)差動(dong)(dong)保(bao)護(hu)，可組(zu)屏安

PSL646U線(xian)(xian)(xian)(xian)路(lu)(lu)光(guang)(guang)纖差動保護(hu)(hu)裝置 PSL 646U線(xian)(xian)(xian)(xian)路(lu)(lu)保護(hu)(hu)測控裝置，以光(guang)(guang)纖電(dian)(dian)流差動保護(hu)(hu)為(wei)主，配置有電(dian)(dian)流保護(hu)(hu)及三相重(zhong)合閘(zha)的(de)成(cheng)套(tao)線(xian)(xian)(xian)(xian)路(lu)(lu)保護(hu)(hu)裝置。它(ta)適用(yong)于110kV以下電(dian)(dian)壓等級的(de)輸配電(dian)(dian)線(xian)(xian)(xian)(xian)路(lu)(lu)，特別適用(yong)于像環網(wang)、雙回線(xian)(xian)(xian)(xian)等保護(hu)(hu)選(xuan)擇性要求(qiu)高的(de)線(xian)(xian)(xian)(xian)路(lu)(lu)，比(bi)如地鐵(tie)的(de)交流聯絡線(xian)(xian)(xian)(xian)、電(dian)(dian)廠的(de)低壓出(chu)線(xian)(xian)(xian)(xian)、城網(wang)和(he)配網(wang)的(de)重(zhong)要聯絡線(xian)(xian)(xian)(xian)、重(zhong)要負荷的(de)進線(xian)(xian)(xian)(xian)等。

國電南自PSL646U微機綜合保(bao)護裝置 光纖電流差動(dong)(dong)(dong)保(bao)護為相(xiang)電流差動(dong)(dong)(dong)。主要保(bao)護區(qu)內的(de)相(xiang)間(jian)故(gu)障和小電阻接地(di)系(xi)統單相(xiang)金屬性(xing)接地(di)故(gu)障。差動(dong)(dong)(dong)動(dong)(dong)(dong)作(zuo)要求：一側裝置差動(dong)(dong)(dong)保(bao)護元件(jian)(jian)動(dong)(dong)(dong)作(zuo)后，同時收到對側裝置保(bao)護元件(jian)(jian)動(dong)(dong)(dong)作(zuo)標志后才出口(kou)。

國(guo)電(dian)(dian)南(nan)自綜保PSL646U光(guang)纖差動(dong)保護(hu)裝(zhuang)置$nPSL 646U線(xian)(xian)路保護(hu)測控(kong)裝(zhuang)置，以(yi)光(guang)纖電(dian)(dian)流(liu)(liu)差動(dong)保護(hu)為主(zhu)，配置有電(dian)(dian)流(liu)(liu)保護(hu)及三相重(zhong)合閘的(de)成套線(xian)(xian)路保護(hu)裝(zhuang)置。它適用(yong)于110kV以(yi)下電(dian)(dian)壓等級(ji)的(de)輸配電(dian)(dian)線(xian)(xian)路，特別適用(yong)于像環網、雙(shuang)回(hui)線(xian)(xian)等保護(hu)選擇性要(yao)求高(gao)的(de)線(xian)(xian)路，比如地鐵的(de)交(jiao)流(liu)(liu)聯(lian)絡(luo)線(xian)(xian)、電(dian)(dian)廠的(de)低壓出(chu)線(xian)(xian)、城網和(he)配網的(de)重(zhong)要(yao)聯(lian)絡(luo)線(xian)(xian)、重(zhong)要(yao)負荷(he)的(de)進線(xian)(xian)等。