一、低壓隔離開關和高壓隔離開關區別在哪
隔離開關按照額定電壓不同,可分為低壓隔離開關和高壓隔離開關兩種,這兩種都是隔離開關,但兩種開關有所區別。
1、低(di)壓(ya)(ya)隔(ge)離開(kai)關(guan)通常(chang)用于(yu)低(di)壓(ya)(ya)電路中(zhong),可以(yi)將電源與負載隔(ge)離開(kai)來,并(bing)切斷電源供應。低(di)壓(ya)(ya)隔(ge)離開(kai)關(guan)安裝簡便(bian),操作(zuo)方便(bian),并(bing)且能夠(gou)有效地保(bao)護設(she)(she)備和(he)人員的安全。因此,在(zai)家庭和(he)商業用電中(zhong),低(di)壓(ya)(ya)隔(ge)離開(kai)關(guan)是(shi)必不可少的。同時,對于(yu)進行電器(qi)維(wei)修和(he)更換(huan)設(she)(she)備的工作(zuo)人員來說,低(di)壓(ya)(ya)隔(ge)離開(kai)關(guan)也是(shi)不可或(huo)缺的工具。
2、與(yu)低(di)壓(ya)隔(ge)(ge)離開關相比,高壓(ya)隔(ge)(ge)離開關主要用(yong)于高壓(ya)電(dian)(dian)(dian)力系統中(zhong),可(ke)以切斷高壓(ya)電(dian)(dian)(dian)源的(de)供應。高壓(ya)隔(ge)(ge)離開關能夠承受(shou)更高的(de)電(dian)(dian)(dian)壓(ya)和電(dian)(dian)(dian)流,并且具備更高的(de)斷電(dian)(dian)(dian)能力,它在電(dian)(dian)(dian)力輸變電(dian)(dian)(dian)系統中(zhong)起到(dao)了至關重(zhong)要的(de)作用(yong),是確保電(dian)(dian)(dian)力系統安全穩定運(yun)行(xing)的(de)關鍵(jian)設備。
二、高壓隔離開關和低壓隔離開關能混用嗎
隔離開(kai)關由低(di)壓(ya)和高(gao)壓(ya)之分(fen),選擇(ze)隔離開(kai)關時,要求隔離開(kai)關的額定電壓(ya)應與所在回(hui)路的標稱電壓(ya)相適應,那么低(di)壓(ya)隔離開(kai)關能代(dai)替(ti)高(gao)壓(ya)隔離開(kai)關嗎(ma)?
電壓高低主要影響隔離開關的絕(jue)(jue)緣以及電(dian)(dian)氣距離(li)(li):電(dian)(dian)壓高(gao)(gao),對絕(jue)(jue)緣要(yao)求高(gao)(gao),電(dian)(dian)氣間隙大;電(dian)(dian)壓等(deng)(deng)級(ji)低(di)(di),絕(jue)(jue)緣要(yao)求低(di)(di),電(dian)(dian)氣間隙小,用于高(gao)(gao)壓會發生絕(jue)(jue)緣擊穿或(huo)者(zhe)拉弧現象,從(cong)而造成安全問題。因(yin)此,一(yi)般低(di)(di)壓隔(ge)(ge)離(li)(li)開(kai)關不能代(dai)替高(gao)(gao)壓隔(ge)(ge)離(li)(li)開(kai)關,但高(gao)(gao)壓隔(ge)(ge)離(li)(li)開(kai)關只要(yao)容(rong)量(liang)匹配,可以替代(dai)低(di)(di)電(dian)(dian)壓等(deng)(deng)級(ji)的隔(ge)(ge)離(li)(li)開(kai)關的。