2. 直流電機(jī)的起動(dòng)
(1) 檢查線路情況(包括電源、控制器、接線及測(cè)量?jī)x表的連接等),檢查起動(dòng)器的彈簧是否靈活,接觸是否良好。
(2) 在恒壓電源供電時(shí),需用起動(dòng)器起動(dòng)。閉合電源開(kāi)關(guān),在電動(dòng)機(jī)負(fù)載下,轉(zhuǎn)動(dòng)起動(dòng)器,在每個(gè)觸點(diǎn)上停留約2S,直至后一點(diǎn),轉(zhuǎn)動(dòng)臂被電磁鐵吸住為止。
(3) 電動(dòng)機(jī)在單獨(dú)的可調(diào)電源供電時(shí),先將勵(lì)磁繞組通電,并將電源電壓降至,然后閉合電樞回路接觸器,逐漸升高電壓,達(dá)額定值或所需轉(zhuǎn)速。
(4) 電機(jī)與生產(chǎn)機(jī)械的連軸器先別連接,輸入小于10%的額定電樞電壓,確定電機(jī)與生產(chǎn)機(jī)械轉(zhuǎn)速方向是否一致,一致時(shí)表示接線正確。
(5) 電動(dòng)機(jī)換向器端帶測(cè)速發(fā)電機(jī)時(shí),電機(jī)起動(dòng)后,應(yīng)檢查測(cè)速發(fā)電機(jī)輸出特性,該極性與控制屏極性應(yīng)一致。
(6) 電機(jī)起動(dòng)完畢后,應(yīng)觀察換向器上有無(wú)火花,火花等級(jí)是否超標(biāo)。
新聞:延慶半空心軸編碼器TS5306N616哪里有賣
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