升降機(jī)用電量較大,，它是大型施工電梯械設(shè)備,，所以它的電源安全防護(hù)措施必須是安全可靠,。

1、升降機(jī)電源一般采用普通308V,、50Hz的三相五線交換電源供電,，施工工地供電應(yīng)當(dāng)要做到“三級(jí)配電，兩級(jí)維護(hù)”的用電標(biāo)準(zhǔn)要求,。施工電梯須設(shè)置專用的開關(guān)箱,，電壓穩(wěn)定應(yīng)當(dāng)不能超過±10%的額外值，供電容量應(yīng)能滿足設(shè)備的最低供電容量，絕緣電阻應(yīng)大于0.5M,。
Lift the power generally use ordinary 308V, 50Hz three-phase five-wire switching power supply, power supply construction sites should be to achieve the "three-tier distribution, two maintenance"power standards. Construction elevator shall be provided with a dedicated switch boxes, voltage stability should not exceed ± 10% of the additional value, the power supply capacity should be able to meet the minimum power capacity of the equipment, the insulation resistance should be greater than 0.5M.
2、升降機(jī)按劃定應(yīng)設(shè)置好過流,、短路,、欠壓、過壓及零位掩護(hù),、失壓保護(hù),、電源錯(cuò)相和斷相保護(hù)等措施；設(shè)備的專用開關(guān)箱應(yīng)設(shè)有門鎖,，且設(shè)備的防護(hù)等級(jí)應(yīng)高于P44,，應(yīng)當(dāng)設(shè)有升降機(jī)緊急停止按鈕完善的設(shè)施。
Lifts should be set according to delineate better flow, short circuit, undervoltage, overvoltage and zero cover, voltage protection, power-phase and phase failure protection and other measures;special switch box equipment shall be provided with locks, and equipment protection rating should be higher than P44, should lift the emergency stop button has excellent facilities.