A.1.3p.u,1.4p.u B.1.3p.u,1.5p.u C.1.4p.u,1.5p.u D.1.2p.u,1.5p.u
A.不判 B.判壓變低壓空開(kāi)輔結(jié)點(diǎn)及電壓值 C.帶電顯示裝置 D.計(jì)算電壓值是否低于定值
A.提高差動(dòng)啟動(dòng)門檻 B.降低二次諧波制動(dòng)系數(shù) C.直阻測(cè)試后消磁 D.采用比率制動(dòng)