KBT-L系列退耦器(qi)(qi)串聯安(an)裝(zhuang)于額定電(dian)(dian)壓(ya)(ya)500V及以的(de)(de)低壓(ya)(ya)供電(dian)(dian)系統中，用于增加導(dao)線感(gan)抗，彌補導(dao)線長度不(bu)(bu)足，協調(diao)不(bu)(bu)同規(gui)格防(fang)雷器(qi)(qi)之(zhi)間的(de)(de)配合問(wen)題。典型應用在(zai)B級和C級的(de)(de)防(fang)雷器(qi)(qi)都(dou)安(an)裝(zhuang)在(zai)一個配電(dian)(dian)箱中的(de)(de)場合。當電(dian)(dian)壓(ya)(ya)開關型防(fang)雷器(qi)(qi)至限(xian)(xian)壓(ya)(ya)型防(fang)雷器(qi)(qi)之(zhi)間的(de)(de)線路(lu)長度小(xiao)于10m，或限(xian)(xian)壓(ya)(ya)型防(fang)雷器(qi)(qi)之(zhi)間的(de)(de)線路(lu)長度小(xiao)于5m時，在(zai)兩級防(fang)雷器(qi)(qi)之(zhi)間應加裝(zhuang)退耦器(qi)(qi)。
KBT-L系列退耦器(qi)(qi)采用(yong)模(mo)塊式結構，串聯(lian)連接于(yu)前后兩級(ji)防雷(lei)器(qi)(qi)之(zhi)間(jian)(jian)，應依據IEC61643-1和GB50343標準，根(gen)據線路的(de)負載電(dian)(dian)流選(xuan)擇(ze)相應的(de)退耦器(qi)(qi)。退耦器(qi)(qi)對瞬時高能(neng)雷(lei)電(dian)(dian)流的(de)極佳的(de)電(dian)(dian)感特性在(zai)雷(lei)電(dian)(dian)來臨時保(bao)證電(dian)(dian)涌(yong)(yong)保(bao)護(hu)(hu)器(qi)(qi)的(de)可靠(kao)操作(zuo)，如果(guo)(guo)電(dian)(dian)網中有幾個電(dian)(dian)涌(yong)(yong)保(bao)護(hu)(hu)器(qi)(qi)，它們將會互相影響(xiang)，這就意(yi)味(wei)著，并(bing)聯(lian)的(de)保(bao)護(hu)(hu)器(qi)(qi)之(zhi)間(jian)(jian)必須達到(dao)能(neng)量的(de)配合。配合的(de)效(xiao)果(guo)(guo)是當由(you)雷(lei)電(dian)(dian)形(xing)成(cheng)一(yi)個浪涌(yong)(yong)過電(dian)(dian)壓時，電(dian)(dian)涌(yong)(yong)保(bao)護(hu)(hu)器(qi)(qi)（B級(ji)）將可靠(kao)地響(xiang)應，帶走高能(neng)量的(de)電(dian)(dian)流，以保(bao)護(hu)(hu)其(qi)它電(dian)(dian)涌(yong)(yong)保(bao)護(hu)(hu)器(qi)(qi)（C級(ji)或(huo)D級(ji)）。
