因為串聯電抗器和電容器在系統中是串聯配套使用的，那么選擇電抗器時要與所選擇的電容器參數相同，選擇電抗器需要注意的參數有：額定電壓（這個電壓與匹配的電容器額定電壓相同）、額定電流、相數（就是需要三相的還是單相的）、電抗率、材質（銅材或鋁材）、繞制類型（線繞或箔繞）溫升、線性度等參數，非標要求的話，需提前說明。
在400V的無功補償系統(tong)中(zhong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)抗(kang)(kang)器(qi)和電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)容(rong)(rong)器(qi)串聯時(shi)(shi)(shi)，有(you)一些常用(yong)的(de)(de)(de)配套選(xuan)擇(ze)方案(an)，比如(ru)共補方案(an)中(zhong)，電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)抗(kang)(kang)率7%時(shi)(shi)(shi)，三相(xiang)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)容(rong)(rong)器(qi)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓宜(yi)選(xuan)擇(ze)480V的(de)(de)(de)，這樣電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)抗(kang)(kang)器(qi)的(de)(de)(de)額定電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓也要(yao)做成480V的(de)(de)(de)。如(ru)果電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)抗(kang)(kang)率14%時(shi)(shi)(shi)，三相(xiang)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)容(rong)(rong)器(qi)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓宜(yi)選(xuan)用(yong)525V的(de)(de)(de)；分(fen)補方案(an)中(zhong)，電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)抗(kang)(kang)率7%時(shi)(shi)(shi)，單(dan)(dan)相(xiang)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)容(rong)(rong)器(qi)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓宜(yi)選(xuan)擇(ze)280V的(de)(de)(de)，電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)抗(kang)(kang)率14%時(shi)(shi)(shi)，單(dan)(dan)相(xiang)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)容(rong)(rong)器(qi)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓宜(yi)選(xuan)用(yong)300V的(de)(de)(de)。有(you)人可能會問，為(wei)什(shen)么400V系統(tong)中(zhong)，電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)容(rong)(rong)器(qi)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓怎么不選(xuan)擇(ze)400V的(de)(de)(de)呢(ni)，其實電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)抗(kang)(kang)器(qi)和電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)容(rong)(rong)器(qi)串聯后，會抬升(sheng)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)容(rong)(rong)器(qi)兩(liang)端的(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓，為(wei)保證電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)容(rong)(rong)器(qi)安全運行，就需選(xuan)用(yong)留有(you)一定余量的(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓等級。對(dui)于銷(xiao)售(shou)工程師來講(jiang)，電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)抗(kang)(kang)器(qi)和電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)容(rong)(rong)器(qi)可以(yi)配套銷(xiao)售(shou)，當然(ran)也可以(yi)單(dan)(dan)獨(du)銷(xiao)售(shou)的(de)(de)(de)。
在(zai)實際(ji)無(wu)功補(bu)(bu)償(chang)成套中，有(you)時候會出(chu)現(xian)一(yi)(yi)(yi)(yi)個(ge)情況，一(yi)(yi)(yi)(yi)個(ge)補(bu)(bu)償(chang)柜容(rong)量300kvar，補(bu)(bu)償(chang)方(fang)(fang)案(an)確會有(you)很(hen)多種(zhong)(zhong)(zhong)，當(dang)然也會出(chu)現(xian)很(hen)多種(zhong)(zhong)(zhong)價格，比(bi)如共補(bu)(bu)償(chang)300kvar，第一(yi)(yi)(yi)(yi)種(zhong)(zhong)(zhong)是分5只60kvar的(de)方(fang)(fang)案(an)，第二(er)種(zhong)(zhong)(zhong)是分10只30kvar的(de)方(fang)(fang)案(an)，雖(sui)然第一(yi)(yi)(yi)(yi)種(zhong)(zhong)(zhong)方(fang)(fang)案(an)要比(bi)第二(er)種(zhong)(zhong)(zhong)方(fang)(fang)案(an)價格上有(you)一(yi)(yi)(yi)(yi)定優(you)勢，但(dan)是第二(er)種(zhong)(zhong)(zhong)的(de)方(fang)(fang)案(an)因為(wei)(wei)支路(lu)較多，平(ping)分的(de)風(feng)險和后期維修成本(ben)較低。不(bu)管哪一(yi)(yi)(yi)(yi)種(zhong)(zhong)(zhong)方(fang)(fang)案(an)，都有(you)一(yi)(yi)(yi)(yi)定的(de)優(you)勢，對(dui)于銷(xiao)售工程師(shi)來說，需要考慮現(xian)場(chang)的(de)環境、空間、成本(ben)等一(yi)(yi)(yi)(yi)切因素，綜合(he)考慮，為(wei)(wei)客戶拿(na)出(chu)一(yi)(yi)(yi)(yi)個(ge)，比(bi)較合(he)適(shi)的(de)方(fang)(fang)案(an)。
希拓電氣創立于2014年，是一家集研發、生產、銷售和服務于一體的高新技術企業，致力于為客戶提供一流的電能質量解決方案，旗下有希拓電氣（上海）有限公司、希拓電氣（常州）有限公司。主要產品包括：電容器、電抗器、晶閘管投切模塊，無功功率控制器、低壓無功補償成套裝置、有源電力濾波器、靜止無功發生器及諧波保護器等。
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