使用潛水泵(beng)不能做的事

沈陽潛水泵采取保護接地是國家強制性標準的要求。只有采取保護接地，才能確保使用時的人身安全。如果沒有保護接地， 一旦外殼漏電，就造成潛水泵出水口處的水及抽水的水面帶電，危及人畜安全，同時浪費大量電能。若將潛水泵的金屬外殼與符合國家標準的接地體（接地電阻不大于4Ω）接地連接，當潛水泵外殼漏電時， 電流經潛水泵金屬外殼、保護接地線、接地體、大地、變壓器的工作接地線和電源形成一個閉合回路，當漏電流過大時， 特別是火線碰殼時， 就能使潛水泵的保護裝置動作（熔斷器熔斷或空氣開關跳閘），切斷漏電潛水泵的電源。

潛水泵工作(zuo)(zuo)在水中(zhong)，容易漏電(dian)(dian)(dian)(dian)造成電(dian)(dian)(dian)(dian)能損失甚至引發(fa)觸電(dian)(dian)(dian)(dian)事故。如果(guo)裝(zhuang)有漏電(dian)(dian)(dian)(dian)保(bao)護器，只要潛水泵漏電(dian)(dian)(dian)(dian)值超(chao)過漏電(dian)(dian)(dian)(dian)保(bao)護器的動作(zuo)(zuo)電(dian)(dian)(dian)(dian)流(liu)值（一般不超(chao)過30 mA）， 漏電(dian)(dian)(dian)(dian)保(bao)護器就(jiu)會(hui)切斷潛水泵的電(dian)(dian)(dian)(dian)源。

電(dian)壓過高和(he)過低(di)都會使(shi)潛水泵溫升過高，縮短(duan)使(shi)用壽命甚至(zhi)燒毀(hui)潛水泵。農村由于低(di)壓供電(dian)線路比較

長，線路末(mo)端(duan)(duan)電(dian)(dian)壓(ya)(ya)過(guo)低、始端(duan)(duan)電(dian)(dian)壓(ya)(ya)過(guo)高是常(chang)有的事。因此，在使用潛水(shui)(shui)泵(beng)的過(guo)程(cheng)中，操作者必須隨時(shi)觀察電(dian)(dian)源電(dian)(dian)壓(ya)(ya)值(zhi)， 若低于額(e)(e)定電(dian)(dian)壓(ya)(ya)10%以(yi)下(xia)，高于額(e)(e)定電(dian)(dian)壓(ya)(ya)10%以(yi)上，或(huo)電(dian)(dian)流(liu)大(da)于潛水(shui)(shui)泵(beng)額(e)(e)定電(dian)(dian)流(liu)的20%時(shi)，應立(li)即停機，并(bing)避免電(dian)(dian)源電(dian)(dian)壓(ya)(ya)異常(chang)時(shi)開機。

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