A、壓縮機(jī)扳鍵開(kāi)關(guān)7SKl(7SK2)接觸不良 B、壓力繼電器547KP故障 C、隔離開(kāi)關(guān)35位置不對(duì)或接線松脫 D、壓縮機(jī)脫扣開(kāi)關(guān)15QA脫扣或壓縮機(jī)本身故障
A、閉合570QS,看:“零位”燈亮,注意確認(rèn)主斷路器在斷開(kāi)位,“主斷”燈亮 B、閉合后弓按鍵402SK,受電弓升起時(shí)間不大于10S,無(wú)沖網(wǎng)現(xiàn)象 C、斷開(kāi)后弓按鍵402SK,降弓時(shí)間不大于7S,無(wú)砸車(chē)頂現(xiàn)象,網(wǎng)壓表降0 D、閉合主斷路器按鍵401SK,看輔助電壓表顯示310~460V
A、0.1mm B、0.2mm C、0.3mm D、0.4mm