防雷(lei)引(yin)下線(xian)的(de)一般規定引(yin)下線(xian)是用來(lai)泄放雷(lei)電流(liu)入(ru)地的(de)導(dao)線(xian),其施工質量的(de)好壞直接(jie)影響(xiang)雷(lei)電流(liu)是否能(neng)夠順利泄放入(ru)地及(ji)泄放效果。
2021/01/15防雷(lei)引(yin)下線的一般規定引(yin)下線是(shi)用(yong)來泄(xie)放(fang)雷(lei)電流入(ru)地(di)的導線,其施工(gong)質量的好壞直接(jie)影響雷(lei)電流是(shi)否能夠順利泄(xie)放(fang)入(ru)地(di)及泄(xie)放(fang)效果(guo)。
2020/12/17多年來的防(fang)雷(lei)檢(jian)測發(fa)現電流地(di)(di)棒(bang)和電壓地(di)(di)棒(bang)的打(da)樁(zhuang)位(wei)置至關重要,對接地(di)(di)電阻(zu)值(zhi)影響較大(da)。若電壓地(di)(di)棒(bang)的樁(zhuang)打(da)在離地(di)(di)網(wang)越近的地(di)(di)方,則電阻(zu)值(zhi)越小(xiao),反之越大(da)。對此防(fang)雷(lei)檢(jian)測人員在...
2020/05/11使用普通的(de)接(jie)地電(dian)(dian)阻(zu)測(ce)(ce)答試(shi)儀注意先測(ce)(ce)量下測(ce)(ce)試(shi)線的(de)過渡電(dian)(dian)阻(zu),測(ce)(ce)試(shi)后把測(ce)(ce)試(shi)線的(de)過渡電(dian)(dian)阻(zu)減(jian)除。100米的(de)2.5平(ping)房毫米的(de)多股銅(tong)芯線一般在(zai)1.0歐姆左(zuo)右。用接(jie)地電(dian)(dian)阻(zu)測(ce)(ce)試(shi)儀測(ce)(ce)試(shi)的(de)方法是...
2020/05/11由(you)于高(gao)(gao)壓(ya)雷電(dian)(dian)(dian)脈(mo)沖是雷害(hai)中(zhong)年損害(hai)設備多的(de),所以對(dui)高(gao)(gao)壓(ya)雷電(dian)(dian)(dian)引人的(de)設備必(bi)須予以足夠重(zhong)視(shi),在工程上(shang)往往要根據設備的(de)重(zhong)要性(xing)和其對(dui)高(gao)(gao)電(dian)(dian)(dian)壓(ya)的(de)耐受能力采用一級或多級設防。其中(zhong)一級設防,往往是把高(gao)(gao)電(dian)(dian)(dian)壓(ya)雷電(dian)(dian)(dian)脈(mo)沖的(de)幅值降低...
2020/05/11當雷(lei)電(dian)(dian)波(bo)(bo)到(dao)達電(dian)(dian)纜(lan)(lan)端(duan)(duan)(輸人端(duan)(duan))時,避雷(lei)器被擊穿,電(dian)(dian)纜(lan)(lan)外皮導體與電(dian)(dian)纜(lan)(lan)芯接通。一(yi)部(bu)(bu)分雷(lei)電(dian)(dian)流經電(dian)(dian)纜(lan)(lan)端(duan)(duan)接地電(dian)(dian)阻入地;另一(yi)部(bu)(bu)分雷(lei)電(dian)(dian)流流經電(dian)(dian)纜(lan)(lan)芯。由于(yu)雷(lei)電(dian)(dian)流高頻諧(xie)波(bo)(bo)相當豐(feng)富(fu).產生集膚效(xiao)應,流經電(dian)(dian)纜(lan)(lan)芯...
2020/05/11