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GCHG521高压电(dian)(dian)(dian)缆(lan)外(wai)护套故障测试(shi)仪(yi)是基于MURRAY电(dian)(dian)(dian)桥原理(li)而设计的(de)，可用于敷(fu)设后各(ge)种电(dian)(dian)(dian)线电(dian)(dian)(dian)缆(lan)的(de)击穿点(dian)及没有击穿但(dan)绝缘(yuan)电(dian)(dian)(dian)阻值偏低的(de)缺(que)陷(xian)点(dian)的(de)定(ding)位。当然，也可用于电(dian)(dian)(dian)缆(lan)厂(chang)内各(ge)种线缆(lan)的(de)缺(que)陷(xian)点(dian)定(ding)位。

GCHD523电(dian)(dian)缆外护套(tao)故(gu)障定(ding)位(wei)仪将电(dian)(dian)网(wang)输入的(de)(de)220VAC电(dian)(dian)源经全波(bo)整流实现(xian)了优良的(de)(de)转换效应变换为识别所需的(de)(de)大功率特殊信号(hao)，此信号(hao)通(tong)过连接线加在待定(ding)位(wei)电(dian)(dian)缆上(shang)，采用测(ce)量(liang)“跨步电(dian)(dian)压法(fa)”或(huo)者“电(dian)(dian)流法(fa)”可以对(dui)电(dian)(dian)缆故(gu)障进行精确定(ding)点。

GCDL-HT高压(ya)(ya)(ya)电(dian)(dian)缆(lan)外(wai)护套故(gu)障(zhang)(zhang)(zhang)定(ding)位仪高压(ya)(ya)(ya)电(dian)(dian)缆(lan)外(wai)护套故(gu)障(zhang)(zhang)(zhang)探测仪主要用(yong)于精(jing)确(que)定(ding)点单芯(xin)电(dian)(dian)缆(lan)的(de)外(wai)护套故(gu)障(zhang)(zhang)(zhang)，精(jing)确(que)定(ding)点低(di)压(ya)(ya)(ya)电(dian)(dian)缆(lan)中的(de)接地(di)泄漏故(gu)障(zhang)(zhang)(zhang)，进行高压(ya)(ya)(ya)电(dian)(dian)缆(lan)外(wai)护套故(gu)障(zhang)(zhang)(zhang)的(de)预定(ding)位及耐压(ya)(ya)(ya)试验。本设(she)备采用(yong)微机和数(shu)字化技术，具(ju)有良好的(de)操(cao)作和自(zi)动保护性能，使用(yong)方便安(an)全，此设(she)备也(ye)适合于将低(di)压(ya)(ya)(ya)电(dian)(dian)力电(dian)(dian)缆(lan)中的(de)高阻电(dian)(dian)缆(lan)故(gu)障(zhang)(zhang)(zhang)转(zhuan)换为低(di)阻故(gu)障(zhang)(zhang)(zhang)。