的(de)(de)(de)(de)(de)(de)(de)主要(yao)功能是實現電(dian)(dian)(dian)(dian)氣絕緣(yuan)和機械(xie)(xie)固定(ding),為(wei)此(ci)規定(ding)有各種(zhong)(zhong)電(dian)(dian)(dian)(dian)氣和機械(xie)(xie)性能的(de)(de)(de)(de)(de)(de)(de)要(yao)求(qiu)。如在規定(ding)的(de)(de)(de)(de)(de)(de)(de)運行電(dian)(dian)(dian)(dian)壓、雷電(dian)(dian)(dian)(dian)過(guo)電(dian)(dian)(dian)(dian)壓及內部過(guo)電(dian)(dian)(dian)(dian)壓作 用下(xia)(xia),不(bu)發生擊穿或沿表(biao)面閃絡(luo);在規定(ding)的(de)(de)(de)(de)(de)(de)(de)長期(qi)和短時的(de)(de)(de)(de)(de)(de)(de)機械(xie)(xie)負荷(he)作用下(xia)(xia),不(bu)產(chan)生破壞和損壞;在規定(ding)的(de)(de)(de)(de)(de)(de)(de)機、電(dian)(dian)(dian)(dian)負荷(he)和各種(zhong)(zhong)環(huan)境條(tiao)件(jian)下(xia)(xia)長期(qi) 運行以(yi)后, 不(bu)產(chan)生明顯的(de)(de)(de)(de)(de)(de)(de)劣化(hua);絕緣(yuan)子的(de)(de)(de)(de)(de)(de)(de)金(jin)具,在運行電(dian)(dian)(dian)(dian)壓下(xia)(xia)不(bu)產(chan)生明顯的(de)(de)(de)(de)(de)(de)(de)電(dian)(dian)(dian)(dian)暈放電(dian)(dian)(dian)(dian)現象,以(yi)免干擾(rao)無線(xian)電(dian)(dian)(dian)(dian)或電(dian)(dian)(dian)(dian)視的(de)(de)(de)(de)(de)(de)(de)接(jie)收。因為(wei)絕緣(yuan)子是 大量(liang)使用的(de)(de)(de)(de)(de)(de)(de)器件(jian),對其連(lian)接(jie)金(jin)具還要(yao)求(qiu)具有互換性。此(ci)外, 絕緣(yuan)子的(de)(de)(de)(de)(de)(de)(de)技術(shu)標(biao)準還根(gen)據(ju)型號和使用條(tiao)件(jian)的(de)(de)(de)(de)(de)(de)(de)不(bu)同,要(yao)求(qiu)對絕緣(yuan)子進行各種(zhong)(zhong)電(dian)(dian)(dian)(dian)氣 的(de)(de)(de)(de)(de)(de)(de)、機械(xie)(xie)的(de)(de)(de)(de)(de)(de)(de)、物理的(de)(de)(de)(de)(de)(de)(de)以(yi)及環(huan)境條(tiao)件(jian)變化(hua)的(de)(de)(de)(de)(de)(de)(de)試驗, 以(yi)檢驗其性能和質(zhi)量(liang)。