KYN28A-12型(xing)鎧裝移(yi)開式交流金屬封閉(bi)開關(guan)設備，系(xi)3.6~12KV三(san)相交流50Hz，單母(mu)線及(ji)(ji)單母(mu)線分段系(xi)統(tong)的(de)(de)(de)成套配(pei)電(dian)(dian)(dian)(dian)(dian)裝置。主要用(yong)于發電(dian)(dian)(dian)(dian)(dian)廠、中(zhong)小型(xing)發電(dian)(dian)(dian)(dian)(dian)機送電(dian)(dian)(dian)(dian)(dian)、工礦企(qi)事業配(pei)電(dian)(dian)(dian)(dian)(dian)以及(ji)(ji)電(dian)(dian)(dian)(dian)(dian)力系(xi)統(tong)的(de)(de)(de)二次變電(dian)(dian)(dian)(dian)(dian)的(de)(de)(de)受電(dian)(dian)(dian)(dian)(dian)、送電(dian)(dian)(dian)(dian)(dian)及(ji)(ji)大型(xing)離壓電(dian)(dian)(dian)(dian)(dian)動機起(qi)動等(deng)(deng)，實(shi)行控制(zhi)保護、監測之用(yong)。除可(ke)配(pei)用(yong)與之配(pei)套的(de)(de)(de)國產VS S1型(xing)真空(kong)斷(duan)路器外(wai)，還可(ke)配(pei)用(yong)ABB公司的(de)(de)(de)VD4型(xing)、施耐德公司的(de)(de)(de)HVX-12 型(xing)等(deng)(deng)真空(kong)斷(duan)路器，實(shi)為一種(zhong)性(xing)能優越的(de)(de)(de)配(pei)電(dian)(dian)(dian)(dian)(dian)裝置。