電(dian)源浪(lang)(lang)涌保護器可分(fen)為A、B、C、D四個(ge)級(ji)別(bie)，每個(ge)級(ji)別(bie)對(dui)應(ying)的標(biao)稱放(fang)電(dian)電(dian)流都不相同。今天(tian)鈞和電(dian)子就電(dian)源浪(lang)(lang)涌保護器這(zhe)四個(ge)級(ji)別(bie)對(dui)應(ying)的標(biao)稱放(fang)電(dian)電(dian)流及選(xuan)型配比(bi)作(zuo)如下分(fen)享：

一、電源浪涌保護器各級標(biao)稱放電電流(liu)推薦表

    電(dian)(dian)(dian)源浪涌保護(hu)器的(de)標(biao)稱(cheng)放電(dian)(dian)(dian)應根(gen)據雷(lei)電(dian)(dian)(dian)威(wei)脅(xie)的(de)強度(du)和出現的(de)概率來確定，國(guo)際電(dian)(dian)(dian)工委員會IEC將一級(ji)浪涌防護(hu)的(de)雷(lei)電(dian)(dian)(dian)威(wei)脅(xie)值定為(wei)200kA，波型10/350μs。超(chao)過該(gai)值的(de)概率為(wei)1%。分配(pei)到進入建筑物各金屬設(she)施(shi)(shi)的(de)是(shi)總電(dian)(dian)(dian)流的(de)50%，即100kA。假定進入建筑物的(de)金屬設(she)施(shi)(shi)只是(shi)變壓器低壓側的(de)三相(xiang)五線(xian)制供電(dian)(dian)(dian)線(xian)路，即只有(you)5根(gen)線(xian)，則每根(gen)線(xian)的(de)荷載(zai)電(dian)(dian)(dian)流即為(wei)100/5=20kA。具體各級(ji)標(biao)稱(cheng)放電(dian)(dian)(dian)電(dian)(dian)(dian)流參(can)考下表：

     二、電源(yuan)浪涌保護器的選型適配

鈞和電(dian)(dian)子按照(zhao)電(dian)(dian)源浪涌保(bao)護(hu)器(qi)(qi)各級的(de)標稱放電(dian)(dian)電(dian)(dian)流，特將電(dian)(dian)源浪涌保(bao)護(hu)器(qi)(qi)的(de)選型適配如下：

    綜上(shang)，具體選型(xing)適配要看現場(chang)的具體要求。