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北京郊區(qū)一輪是安裝的灌溉泵，流量為35m3/h，揚(yáng)程25m，配用電機(jī)功率5.5kW。
故障為電機(jī)合;不上閘，泵轉(zhuǎn)不起來。
解決過程:現(xiàn)場(chǎng)泵盤車車輕松靈活，軸承潤(rùn)滑正常，電機(jī)接線正確， 啟泵時(shí)出口閥門是關(guān)閉的。但電機(jī)沒有啟動(dòng)器降壓?jiǎn)?dòng)，而是直按啟動(dòng)的。 再進(jìn)一步檢查，變壓器離泵很遠(yuǎn)，約有1500m，并且用很細(xì)的塑料導(dǎo)線連接起來?？戳酥笥X得變壓器離泵這麼遠(yuǎn)，導(dǎo)線又那么細(xì)，線壓降一定很大，決定趕快測(cè)量電機(jī)接戰(zhàn)端的電壓，結(jié)果僅為330V，電壓太低，又是直接啟動(dòng)，當(dāng)然就起不來了。后換了粗的導(dǎo)線電壓上升到380V，泵就起來了。渣漿泵
The first round of irrigation pump is installed in Beijing suburb, with flow of 35m3 / h, lift of 25m and motor power of 5.5kW.
The fault is that the motor is closed; the pump can't run without the brake.
Solution: the on-site pump turning gear is easy and flexible, the bearing lubrication is normal, the motor wiring is correct, and the outlet valve is closed when the pump is started. But the motor does not start with the starter reduced voltage, but with the direct press. Further inspection shows that the transformer is far away from the pump, about 1500m long, and connected with a thin plastic wire. After reading it, I felt that the transformer was so far away from the pump, the wire was so thin, and the voltage drop of the wire must be very large. I decided to measure the voltage of the motor terminal as soon as possible, and the result was only 330V. The voltage was too low, and it was started directly. Of course, it couldn't get up. After the change of the thick wire voltage rise to 380V, the pump up. Slurry pump
