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(3)用一個單相插頭取一根線接在控制端子排的“c”端子上，另一頭的兩相插在接線盒上(老機(jī)型一根線接在“c”上，另一根線接在“d”上)，合上阻隔開關(guān)閘刀，變頻器應(yīng)能送上控制電，面板上閃現(xiàn)“43.21”過幾秒鐘“pro”燈亮(新機(jī)型)，或只需“pro”燈亮(老機(jī)型)，若不閃現(xiàn)可將插頭反過來從頭插一下即可。
(4)面板閃現(xiàn)正常后，可查看變頻器的控制功用是不是正常。用萬用表查看延時可控硅兩端的電壓(即延時電阻上的電壓)，應(yīng)在1.00v左右。將變頻器的“開/停機(jī)”開關(guān)打在“開機(jī)”方位，變頻器應(yīng)能開機(jī)，調(diào)度“頻率調(diào)度”旋扭，變頻器頻率應(yīng)從“2.00”升至“50.00”。用萬用表測量變頻器的三相輸出端子(這時應(yīng)從變頻器一側(cè)測量，因柜子并沒有接通主電，變頻器的主接觸器沒有吸合)，三相電壓應(yīng)互相平衡，對中線也應(yīng)互相平衡。電壓大致是2300v等級的三相電壓為15v左右，對中線為10v左右;1140v等級的三相電壓為9v左右，對中線為5v左右。若不平衡，應(yīng)查看柜子在運(yùn)輸進(jìn)程中有無掉線或其他疑問，直至電壓完全平衡間斷。
(5)工作參數(shù)的設(shè)定。這包括變頻器參數(shù)和電機(jī)維護(hù)儀參數(shù)的設(shè)定兩步。
變頻器參數(shù)的設(shè)定。因變頻器出廠時通常是按2300v/125kw或1140v/75kw而計劃的，因而應(yīng)根據(jù)現(xiàn)場負(fù)載的懇求從頭設(shè)定，包括額外電流、過載維護(hù)電流，其他參數(shù)通常不需求修改。
電機(jī)維護(hù)儀的參數(shù)設(shè)定。電機(jī)維護(hù)儀的參數(shù)包括欠載電流、過載電流、欠壓設(shè)定、過壓設(shè)定等。這兒說明一下。因潛油電泵是深置于油井下油層里的電泵，在工作中靠油的循環(huán)來散熱。一旦井供液短少，電機(jī)將脫離油層工作，電機(jī)將干轉(zhuǎn)，這么就很簡略焚毀電泵。因而應(yīng)設(shè)定欠載維護(hù)，當(dāng)工作電流低于額外電流的80%時，就間斷電機(jī)的工作，起到維護(hù)電機(jī)的作用。
參數(shù)的設(shè)定方法可參照相應(yīng)的說明書進(jìn)行，主要有兩種，bk-3型和bk—j1型。
bk—3型的方法是：在閃現(xiàn)器閃現(xiàn)“p”(剛送電或按四次“上檔”鍵)時，可對參數(shù)值進(jìn)行修改。根據(jù)需求的數(shù)值，按相應(yīng)的數(shù)字鍵，再按“上檔”或“下檔”鍵，最終按相應(yīng)的功用鍵，即可結(jié)束參數(shù)值的修改。

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