接地電(dian)(dian)阻測定(ding)箱,護器采用ZnO壓敏電(dian)(dian)阻作為保(bao)護元件,無串聯間隙,保(bao)護特(te)性(xing)好(hao)(hao),具(ju)有優(you)良(liang)的非線性(xing)伏安特(te)性(xing)曲線。既具(ju)有瓷(ci)套式金屬氧(yang)化物(wu)避雷器的優(you)點,還具(ju)有電(dian)(dian)氣絕緣性(xing)能好(hao)(hao)、介電(dian)(dian)強(qiang)度(du)高、抗漏痕、抗電(dian)(dian)蝕、耐熱、耐寒、耐老化、防爆等優(you)點及(ji)良(liang)好(hao)(hao)的化學穩(wen)定(ding)性(xing)、憎(zeng)水性(xing)、密封(feng)性(xing)。