UPS應急(ji)電(dian)(dian)源輸(shu)出回(hui)路(lu)的(de)線(xian)路(lu)維護:根據UPS各輸(shu)出斷(duan)路(lu)器(qi)的(de)現狀判斷(duan)輸(shu)出回(hui)路(lu)是(shi)(shi)否短路(lu)，使用鉗流表等檢(jian)測(ce)各回(hui)路(lu)是(shi)(shi)否超載，用手觸(chu)電(dian)(dian)纜的(de)方式感知(zhi)電(dian)(dian)纜的(de)溫(wen)度(du)是(shi)(shi)否異(yi)常(chang)從而判斷(duan)線(xian)徑是(shi)(shi)否合適或太小。

在(zai)使用UPS電源時(shi)，應充分理解和掌握相(xiang)應的操作(zuo)方法，同時(shi)使用過(guo)程中應多加(jia)保養，就會避(bi)免許多人為(wei)因素故障，出現問題及時(shi)進(jin)行維護和更新，增(zeng)加(jia)UPS電源的使用壽命。

UPS電(dian)(dian)源(yuan)(yuan)(yuan)(yuan)(yuan)不宜滿(man)載或過(guo)(guo)度輕(qing)載，工頻機架(jia)USP電(dian)(dian)源(yuan)(yuan)(yuan)(yuan)(yuan)參(can)數，雖然每臺UPS電(dian)(dian)源(yuan)(yuan)(yuan)(yuan)(yuan)標有額(e)定(ding)(ding)(ding)功(gong)率(lv)，高頻機架(jia)USP電(dian)(dian)源(yuan)(yuan)(yuan)(yuan)(yuan)參(can)數，但一般情況下(xia)，建議后備式UPS電(dian)(dian)源(yuan)(yuan)(yuan)(yuan)(yuan)選取額(e)定(ding)(ding)(ding)功(gong)率(lv)的(de)(de)(de)60%-70%的(de)(de)(de)負載量;在線式UPS電(dian)(dian)源(yuan)(yuan)(yuan)(yuan)(yuan)選取額(e)定(ding)(ding)(ding)功(gong)率(lv)的(de)(de)(de)70%-80%的(de)(de)(de)負載量。因(yin)此，好不要(yao)按照UPS電(dian)(dian)源(yuan)(yuan)(yuan)(yuan)(yuan)標稱的(de)(de)(de)額(e)定(ding)(ding)(ding)功(gong)率(lv)使用(yong)它。長(chang)期處于(yu)滿(man)載狀(zhuang)態的(de)(de)(de)話，會造(zao)成UPS電(dian)(dian)源(yuan)(yuan)(yuan)(yuan)(yuan)逆變(bian)器(qi)及(ji)整流濾波器(qi)的(de)(de)(de)過(guo)(guo)熱(re)，USP電(dian)(dian)源(yuan)(yuan)(yuan)(yuan)(yuan)參(can)數，影響(xiang)UPS電(dian)(dian)源(yuan)(yuan)(yuan)(yuan)(yuan)的(de)(de)(de)使用(yong)壽命。

小功率UPS電(dian)源(yuan)(yuan)適(shi)合接容性負載(zai)，比如(ru)個人PC、噴墨打印機、掃描(miao)儀等(deng)，但卻不(bu)適(shi)合接感性負載(zai)。因(yin)為感性負載(zai)的啟動電(dian)流往往會超過額定電(dian)流的3～4倍，這樣就會引(yin)起UPS電(dian)源(yuan)(yuan)的瞬時超載(zai)，影響(xiang)UPS的壽命。比如(ru)家中(zhong)常用的電(dian)風扇、電(dian)冰(bing)箱、空調等(deng)都屬于典型感性負載(zai)，不(bu)可(ke)以接在UPS電(dian)源(yuan)(yuan)的輸(shu)出(chu)端。

UPS與EPS的共同點是都有蓄(xu)電(dian)池組，兩者均采(cai)用IGBT逆變技術和脈寬調制PWM技術。EPS為應急電(dian)源裝置(zhi)，UPS為不間斷(duan)電(dian)源裝置(zhi)。

兩(liang)者的工作原理比(bi)較：

不(bu)論市(shi)(shi)電(dian)是(shi)否正常，UPS都一直由(you)(you)逆(ni)變(bian)器(qi)供(gong)電(dian)，即(ji)遵循著“市(shi)(shi)電(dian)輸入-整流-逆(ni)變(bian)-輸出”的步驟，只有(you)在(zai)逆(ni)變(bian)器(qi)過載或者故障時才改由(you)(you)靜態旁路(lu)供(gong)電(dian)。UPS在(zai)市(shi)(shi)電(dian)異常時，應急USP電(dian)源(yuan)參數，轉悠電(dian)池(chi)供(gong)電(dian)或者市(shi)(shi)電(dian)恢復后將(jiang)負荷切(qie)換(huan)至市(shi)(shi)電(dian)的時切(qie)換(huan)時間(jian)均(jun)在(zai)10ms以內。但由(you)(you)于在(zai)市(shi)(shi)電(dian)正常是(shi)UPS也在(zai)工作，壽命相對較短(duan)

對于(yu)EPS，當市(shi)(shi)電(dian)(dian)(dian)正(zheng)常時，市(shi)(shi)電(dian)(dian)(dian)直(zhi)接(jie)對負荷供電(dian)(dian)(dian)，同時充(chong)電(dian)(dian)(dian)器為電(dian)(dian)(dian)池(chi)充(chong)電(dian)(dian)(dian)。只有當控制器加測到(dao)市(shi)(shi)電(dian)(dian)(dian)異常時，由電(dian)(dian)(dian)池(chi)組向逆變器提供直(zhi)流電(dian)(dian)(dian)，逆變器組將電(dian)(dian)(dian)池(chi)組供給的直(zhi)流電(dian)(dian)(dian)轉換成交流電(dian)(dian)(dian)向負荷供電(dian)(dian)(dian)。

EPS在不工作(zuo)時處于休眠狀(zhuang)態，耗電量極低，UPS一直在進行整流逆變(bian)操(cao)作(zuo)，耗能大。

UPS工作時噪聲(sheng)在60dB左右。EPS休眠狀態幾乎無噪聲(sheng)，逆變時噪聲(sheng)與UPS差(cha)不多。

同(tong)容(rong)量的EPS價格要比UPS低很多。安裝環境(jing)上EPS能適應惡略環境(jing)，UPS對安裝環境(jing)要求(qiu)較高。