中(zhong)電氣設(she)備選(xuan)擇不當造(zao)成的(de)(de)常(chang)見錯誤：生產(chan)過程(cheng)中(zhong)交流(liu)接(jie)觸(chu)器的(de)(de)體(ti)積選(xuan)擇不當，不同組的(de)(de)插座(zuo)控制電路安(an)裝(zhuang)了相同體(ti)積的(de)(de)交流(liu)接(jie)觸(chu)器，三相負載的(de)(de)差(cha)異不完(wan)全考慮過的(de)(de)。在(zai)(zai)平衡狀態下(xia)，不能在(zai)(zai)所有正常(chang)模型(xing)中(zhong)選(xuan)擇某些組的(de)(de)輸出交流(liu)接(jie)觸(chu)器的(de)(de)電流(liu)水平。基本上，電流(liu)水平是(shi)通過一個(ge)步驟選(xuan)擇的(de)(de)，該步驟會導致交流(liu)接(jie)觸(chu)器在(zai)(zai)高溫天氣下(xia)運(yun)行期(qi)間燒斷。

根據(ju)電(dian)(dian)氣設(she)(she)備的(de)接線規定，接線盒可(ke)(ke)安(an)裝在(zai)封閉(bi)或(huo)(huo)(huo)半(ban)封閉(bi)的(de)金屬外殼中(zhong)或(huo)(huo)(huo)屏幕上，以(yi)形(xing)成(cheng)配電(dian)(dian)室設(she)(she)備。如果(guo)一切正(zheng)常(chang)，可(ke)(ke)以(yi)使用(yong)手或(huo)(huo)(huo)控制開關(guan)連接或(huo)(huo)(huo)斷開電(dian)(dian)源電(dian)(dian)路。常(chang)見的(de)錯誤或(huo)(huo)(huo)異常(chang)取決(jue)于家用(yong)電(dian)(dian)器的(de)維護，以(yi)斷開電(dian)(dian)路或(huo)(huo)(huo)警報(bao)。識別(bie)儀可(ke)(ke)以(yi)在(zai)信(xin)息模式下(xia)顯示各種主要(yao)參(can)數，還可(ke)(ke)以(yi)調整某些電(dian)(dian)氣設(she)(she)備的(de)主要(yao)參(can)數，并(bing)提(ti)醒或(huo)(huo)(huo)發出所(suo)有正(zheng)常(chang)工作設(she)(she)置(zhi)的(de)偏差信(xin)號。常(chang)用(yong)于發電(dian)(dian)，配電(dian)(dian)和變電(dian)(dian)站。

涉及電源系統中發電，傳輸，分配，轉換和功耗中的接通和斷開，控制或保護的作用。高壓配電柜用(yong)(yong)作電(dian)壓(ya)(ya)(ya)(ya)(ya)等級在3.6 kV~550 kV的電(dian)氣產品(pin)作為高壓(ya)(ya)(ya)(ya)(ya)隔離開關，有(you)接地開關，高壓(ya)(ya)(ya)(ya)(ya)斷路器，自動高壓(ya)(ya)(ya)(ya)(ya)重合和斷開裝置，高壓(ya)(ya)(ya)(ya)(ya)操作機構(gou)，防爆高壓(ya)(ya)(ya)(ya)(ya)配電(dian)裝置和高壓(ya)(ya)(ya)(ya)(ya)開關柜(ju)(ju)等不同類(lei)別。通(tong)常，連接到系統(tong)(tong)(tong)主母線(xian)的電(dian)容器柜(ju)(ju)用(yong)(yong)于中(zhong)央無功功率(lv)補償，并(bing)且(qie)通(tong)常與輸入柜(ju)(ju)并(bing)聯安裝（系統(tong)(tong)(tong)具有(you)PT柜(ju)(ju)，應為高壓(ya)(ya)(ya)(ya)(ya)系統(tong)(tong)(tong)，而低(di)壓(ya)(ya)(ya)(ya)(ya)系統(tong)(tong)(tong)沒有(you)PT柜(ju)(ju)- PT柜(ju)(ju)相當于降低(di)變壓(ya)(ya)(ya)(ya)(ya)器，只需要低(di)壓(ya)(ya)(ya)(ya)(ya)變壓(ya)(ya)(ya)(ya)(ya)器，但(dan)是(shi)電(dian)容器柜(ju)(ju)很(hen)少用(yong)(yong)于高壓(ya)(ya)(ya)(ya)(ya)系統(tong)(tong)(tong)中(zhong)，并(bing)且(qie)高壓(ya)(ya)(ya)(ya)(ya)電(dian)容器很(hen)難制造(zao)，并(bing)且(qie)通(tong)常在低(di)壓(ya)(ya)(ya)(ya)(ya)側(ce)進行集中(zhong)補償。