的(de)(de)主要(yao)(yao)功(gong)能是實現電(dian)(dian)(dian)(dian)氣(qi)絕(jue)緣(yuan)和機(ji)械(xie)固定(ding)(ding)，為(wei)(wei)此(ci)規(gui)定(ding)(ding)有(you)各種電(dian)(dian)(dian)(dian)氣(qi)和機(ji)械(xie)性能的(de)(de)要(yao)(yao)求(qiu)。如在(zai)規(gui)定(ding)(ding)的(de)(de)運行(xing)(xing)電(dian)(dian)(dian)(dian)壓、雷電(dian)(dian)(dian)(dian)過電(dian)(dian)(dian)(dian)壓及內(nei)部過電(dian)(dian)(dian)(dian)壓作 用(yong)下，不發生(sheng)擊穿或沿表面(mian)閃絡；在(zai)規(gui)定(ding)(ding)的(de)(de)長(chang)期(qi)和短時的(de)(de)機(ji)械(xie)負(fu)荷(he)作用(yong)下，不產生(sheng)破壞和損壞；在(zai)規(gui)定(ding)(ding)的(de)(de)機(ji)、電(dian)(dian)(dian)(dian)負(fu)荷(he)和各種環境(jing)條件(jian)(jian)下長(chang)期(qi) 運行(xing)(xing)以后， 不產生(sheng)明顯(xian)的(de)(de)劣化(hua)(hua)；絕(jue)緣(yuan)子(zi)的(de)(de)金具(ju)，在(zai)運行(xing)(xing)電(dian)(dian)(dian)(dian)壓下不產生(sheng)明顯(xian)的(de)(de)電(dian)(dian)(dian)(dian)暈(yun)放電(dian)(dian)(dian)(dian)現象，以免干(gan)擾無(wu)線電(dian)(dian)(dian)(dian)或電(dian)(dian)(dian)(dian)視(shi)的(de)(de)接收。因為(wei)(wei)絕(jue)緣(yuan)子(zi)是 大量(liang)使用(yong)的(de)(de)器件(jian)(jian)，對(dui)其(qi)連接金具(ju)還要(yao)(yao)求(qiu)具(ju)有(you)互換性。此(ci)外， 絕(jue)緣(yuan)子(zi)的(de)(de)技術標準還根據(ju)型號和使用(yong)條件(jian)(jian)的(de)(de)不同，要(yao)(yao)求(qiu)對(dui)絕(jue)緣(yuan)子(zi)進行(xing)(xing)各種電(dian)(dian)(dian)(dian)氣(qi) 的(de)(de)、機(ji)械(xie)的(de)(de)、物理的(de)(de)以及環境(jing)條件(jian)(jian)變(bian)化(hua)(hua)的(de)(de)試驗(yan)， 以檢驗(yan)其(qi)性能和質量(liang)。