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PSM691U電(dian)(dian)(dian)動(dong)(dong)(dong)機(ji)差(cha)動(dong)(dong)(dong)保護裝置 異步電(dian)(dian)(dian)動(dong)(dong)(dong)機(ji)在(zai)啟(qi)(qi)動(dong)(dong)(dong)過(guo)程(cheng)中(zhong)電(dian)(dian)(dian)流(liu)(liu)很(hen)大，通常能(neng)達(da)到 5～8 倍額定(ding)電(dian)(dian)(dian)流(liu)(liu)（Ie），啟(qi)(qi)動(dong)(dong)(dong)時(shi)間能(neng)長達(da)幾(ji)十(shi)秒。裝 置設兩(liang)個速(su)斷定(ding)值(zhi)(zhi)，在(zai)起機(ji)過(guo)程(cheng)中(zhong)采用“啟(qi)(qi)動(dong)(dong)(dong)中(zhong)速(su)斷定(ding)值(zhi)(zhi)”，該值(zhi)(zhi)按(an)躲過(guo)電(dian)(dian)(dian)動(dong)(dong)(dong)機(ji)啟(qi)(qi)動(dong)(dong)(dong)電(dian)(dian)(dian)流(liu)(liu)整(zheng)定(ding)，等電(dian)(dian)(dian)動(dong)(dong)(dong)機(ji) 啟(qi)(qi)動(dong)(dong)(dong)過(guo)程(cheng)結束后(hou)，自動(dong)(dong)(dong)采用“啟(qi)(qi)動(dong)(dong)(dong)后(hou)速(su)斷定(ding)值(zhi)(zhi)”，該值(zhi)(zhi)按(an)電(dian)(dian)(dian)動(dong)(dong)(dong)機(ji)自啟(qi)(qi)動(dong)(dong)(dong)電(dian)(dian)(dian)流(liu)(liu)和區外(wai)出口短路(lu)時(shi)電(dian)(dian)(dian)動(dong)(dong)(dong)機(ji)最大 反饋電(dian)(dian)(dian)流(liu)(liu)考慮，取兩(liang)個電(dian)(dian)(dian)流(liu)(liu)中(zhong)的大者。

南自綜(zong)保(bao)PSL691US線路保(bao)護(hu)測控裝置(zhi) 三段式(shi)復合電壓過流保(bao)護(hu) / 零序過流保(bao)護(hu) / 過負 荷保(bao)護(hu) / 后加(jia)速保(bao)護(hu) / 4-20Ma 輸(shu)出 / 測量

國電(dian)(dian)南(nan)自PSL691U微機保(bao)(bao)護裝置(zhi)(zhi) PS690U 系列保(bao)(bao)護測控裝置(zhi)(zhi)由線路保(bao)(bao)護，變(bian)壓(ya)器(qi)保(bao)(bao)護，電(dian)(dian)容(rong)器(qi)保(bao)(bao)護，電(dian)(dian)抗器(qi)保(bao)(bao)護，備用電(dian)(dian)源自投，電(dian)(dian) 動機保(bao)(bao)護等組成(cheng)，可用于(yu) 110kV 及以下電(dian)(dian)壓(ya)等級的電(dian)(dian)網和發電(dian)(dian)廠(chang)(chang)廠(chang)(chang)用電(dian)(dian)系統(tong)。通(tong)過采(cai)用高(gao)性能 32 位 CPU 將(jiang)保(bao)(bao)護、測控、通(tong)信功能集成(cheng)于(yu)一體，適合與變(bian)電(dian)(dian)站綜合自動系統(tong)或電(dian)(dian)廠(chang)(chang)電(dian)(dian)氣自動化系統(tong)配(pei)套。裝置(zhi)(zhi)可以 組屏集中安(an)裝，也可直接安(an)裝于(yu)開(kai)關柜上進行分散式控制。

國電(dian)(dian)南自PSL691U微機綜保(bao)(bao) PS690U 系列(lie)保(bao)(bao)護(hu)(hu)測控(kong)裝(zhuang)置(zhi)由(you)線路保(bao)(bao)護(hu)(hu)，變(bian)壓(ya)器(qi)保(bao)(bao)護(hu)(hu)，電(dian)(dian)容器(qi)保(bao)(bao)護(hu)(hu)，電(dian)(dian)抗器(qi)保(bao)(bao)護(hu)(hu)，備用電(dian)(dian)源自投(tou)，電(dian)(dian) 動(dong)機保(bao)(bao)護(hu)(hu)等(deng)組(zu)成，可用于(yu)(yu) 110kV 及以(yi)下電(dian)(dian)壓(ya)等(deng)級的電(dian)(dian)網和發電(dian)(dian)廠(chang)廠(chang)用電(dian)(dian)系統(tong)。通(tong)過采用高性能 32 位(wei) CPU 將保(bao)(bao)護(hu)(hu)、測控(kong)、通(tong)信功(gong)能集(ji)成于(yu)(yu)一體，適合與變(bian)電(dian)(dian)站綜合自動(dong)系統(tong)或電(dian)(dian)廠(chang)電(dian)(dian)氣自動(dong)化(hua)系統(tong)配套(tao)。裝(zhuang)置(zhi)可以(yi) 組(zu)屏集(ji)中安裝(zhuang)，也可直接安裝(zhuang)于(yu)(yu)開關(guan)柜上進(jin)行分散(san)式控(kong)制。