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DD–11型接(jie)地(di)繼電(dian)(dian)(dian)器，為瞬時動作(zuo)的過(guo)電(dian)(dian)(dian)流繼電(dian)(dian)(dian)器，用作(zuo)小(xiao)電(dian)(dian)(dian)流接(jie)地(di)電(dian)(dian)(dian)力系統中高電(dian)(dian)(dian)壓三(san)相(xiang)交(jiao)流發電(dian)(dian)(dian)機和電(dian)(dian)(dian)動機的接(jie)地(di)零序(xu)過(guo)電(dian)(dian)(dian)流保(bao)護。 DD-11E/60接(jie)地(di)繼電(dian)(dian)(dian)器

DD–11型(xing)接地(di)(di)繼(ji)(ji)電(dian)(dian)器(qi)，為瞬時動作(zuo)的過電(dian)(dian)流(liu)繼(ji)(ji)電(dian)(dian)器(qi)，用(yong)作(zuo)小電(dian)(dian)流(liu)接地(di)(di)電(dian)(dian)力系統中高電(dian)(dian)壓三相交流(liu)發(fa)電(dian)(dian)機和電(dian)(dian)動機的接地(di)(di)零序(xu)過電(dian)(dian)流(liu)保(bao)護。 DD-11E/40接地(di)(di)繼(ji)(ji)電(dian)(dian)器(qi),DD-11E/50接地(di)(di)繼(ji)(ji)電(dian)(dian)器(qi)

DD–11型接(jie)地繼電(dian)(dian)器(qi)，為瞬(shun)時動作的過電(dian)(dian)流(liu)(liu)繼電(dian)(dian)器(qi)，用(yong)作小電(dian)(dian)流(liu)(liu)接(jie)地電(dian)(dian)力系統中高電(dian)(dian)壓三(san)相交流(liu)(liu)發(fa)電(dian)(dian)機(ji)和電(dian)(dian)動機(ji)的接(jie)地零序(xu)過電(dian)(dian)流(liu)(liu)保護。 DD-11/60接(jie)地繼電(dian)(dian)器(qi)

DD–11型(xing)接(jie)(jie)地(di)繼(ji)電(dian)(dian)器(qi)，為瞬時動作(zuo)的過電(dian)(dian)流(liu)(liu)繼(ji)電(dian)(dian)器(qi)，用作(zuo)小電(dian)(dian)流(liu)(liu)接(jie)(jie)地(di)電(dian)(dian)力系統中高電(dian)(dian)壓三(san)相交流(liu)(liu)發電(dian)(dian)機和電(dian)(dian)動機的接(jie)(jie)地(di)零(ling)序(xu)過電(dian)(dian)流(liu)(liu)保護。 DD-11/40接(jie)(jie)地(di)繼(ji)電(dian)(dian)器(qi),DD-11/50接(jie)(jie)地(di)繼(ji)電(dian)(dian)器(qi)

DD–11型接(jie)(jie)地繼(ji)電(dian)(dian)(dian)器，為瞬(shun)時動作(zuo)的過(guo)(guo)電(dian)(dian)(dian)流(liu)繼(ji)電(dian)(dian)(dian)器，用作(zuo)小電(dian)(dian)(dian)流(liu)接(jie)(jie)地電(dian)(dian)(dian)力系統中(zhong)高電(dian)(dian)(dian)壓(ya)三相交流(liu)發(fa)電(dian)(dian)(dian)機和(he)電(dian)(dian)(dian)動機 的接(jie)(jie)地零序過(guo)(guo)電(dian)(dian)(dian)流(liu)保護。 DD-11型接(jie)(jie)地繼(ji)電(dian)(dian)(dian)器