HDGC3990 直流(liu)(liu)斷路(lu)器(qi)(qi)安(an)秒(miao)特性測(ce)試儀一般在家級實驗室或(huo)檢測(ce)站進行(xing)測(ce)試,設備占(zhan)地面積大,需要配置專(zhuan)門的充(chong)電(dian)(dian)裝(zhuang)置和大電(dian)(dian)流(liu)(liu)負載(zai)箱(xiang),操作(zuo)復(fu)雜;部(bu)分運行(xing)單位(wei)利(li)用變(bian)電(dian)(dian)站蓄電(dian)(dian)池(chi)組對直流(liu)(liu)保(bao)護電(dian)(dian)器(qi)(qi)的級差(cha)配合進行(xing)試驗,但無法準(zhun)確測(ce)試其電(dian)(dian)流(liu)(liu)-動作(zuo)時間特性。