KYN28A-12型(xing)(xing)鎧裝移開式交流金屬封閉開關設(she)備，系(xi)3.6~12KV三相交流50Hz，單母(mu)(mu)線(xian)及(ji)單母(mu)(mu)線(xian)分段系(xi)統的(de)成套配(pei)(pei)電(dian)(dian)(dian)裝置(zhi)(zhi)。主要用(yong)(yong)于發電(dian)(dian)(dian)廠、中(zhong)小型(xing)(xing)發電(dian)(dian)(dian)機送電(dian)(dian)(dian)、工(gong)礦企事業配(pei)(pei)電(dian)(dian)(dian)以(yi)及(ji)電(dian)(dian)(dian)力(li)系(xi)統的(de)二次(ci)變電(dian)(dian)(dian)的(de)受電(dian)(dian)(dian)、送電(dian)(dian)(dian)及(ji)大型(xing)(xing)離壓電(dian)(dian)(dian)動機起動等，實行控制保護(hu)、監測之用(yong)(yong)。除可配(pei)(pei)用(yong)(yong)與之配(pei)(pei)套的(de)國產VS S1型(xing)(xing)真(zhen)空斷(duan)路器外，還可配(pei)(pei)用(yong)(yong)ABB公司(si)的(de)VD4型(xing)(xing)、施耐德(de)公司(si)的(de)HVX-12 型(xing)(xing)等真(zhen)空斷(duan)路器，實為一(yi)種性能優(you)越的(de)配(pei)(pei)電(dian)(dian)(dian)裝置(zhi)(zhi)。