的(de)(de)(de)方(fang)法就(jiu)是(shi)給(gei)電(dian)(dian)(dian)(dian)纜(lan)(lan)套上(shang)鋼管或直接采(cai)用高(gao)導磁率材料制成的(de)(de)(de)鎧裝型電(dian)(dian)(dian)(dian)纜(lan)(lan)——ASTP-120Ω（for RS485 & CAN） one pair 18 AWG ，電(dian)(dian)(dian)(dian)纜(lan)(lan)外徑12.3mm左(zuo)右。可用于(yu)(yu)干擾嚴重(zhong)、鼠害頻繁以(yi)及(ji)(ji)有防雷、防爆要(yao)(yao)(yao)求(qiu)的(de)(de)(de)場所。計算(suan)(suan)(suan)(suan)機(ji)(ji)(ji)電(dian)(dian)(dian)(dian)纜(lan)(lan)屬于(yu)(yu)電(dian)(dian)(dian)(dian)氣裝備用電(dian)(dian)(dian)(dian)纜(lan)(lan)，本電(dian)(dian)(dian)(dian)纜(lan)(lan)適用于(yu)(yu)額(e)定電(dian)(dian)(dian)(dian)壓500V及(ji)(ji)以(yi)下對于(yu)(yu)防干擾性要(yao)(yao)(yao)求(qiu)較(jiao)高(gao)的(de)(de)(de)電(dian)(dian)(dian)(dian)子(zi)計算(suan)(suan)(suan)(suan)機(ji)(ji)(ji)和自動化儀(yi)(yi)器儀(yi)(yi)表。根(gen)據不同環(huan)境和設備的(de)(de)(de)使用要(yao)(yao)(yao)求(qiu)，電(dian)(dian)(dian)(dian)纜(lan)(lan)絕緣可采(cai)用聚(ju)乙烯、聚(ju)、交(jiao)聯聚(ju)乙烯、氟塑(su)料、硅橡膠(jiao)等材料。計算(suan)(suan)(suan)(suan)機(ji)(ji)(ji)電(dian)(dian)(dian)(dian)纜(lan)(lan)規格指的(de)(de)(de)是(shi)截面(mian)大小(xiao)和線芯數(shu)目，計算(suan)(suan)(suan)(suan)機(ji)(ji)(ji)電(dian)(dian)(dian)(dian)纜(lan)(lan)規格各(ge)種各(ge)樣，高(gao)溫計算(suan)(suan)(suan)(suan)機(ji)(ji)(ji)電(dian)(dian)(dian)(dian)纜(lan)(lan)，常(chang)用的(de)(de)(de)有0.5平(ping)方(fang)、0.75平(ping)方(fang)、1平(ping)方(fang)、1.5平(ping)方(fang)、2.5平(ping)方(fang)等等，一般(ban)較(jiao)大規格的(de)(de)(de)需要(yao)(yao)(yao)廠家訂做。

按照用(yong)戶和使用(yong)場合的更高(gao)要(yao)(yao)求，總屏蔽結構可以采用(yong)復合屏蔽方(fang)式，即包含(han)兩層屏蔽，計(ji)算(suan)(suan)機(ji)(ji)電(dian)(dian)(dian)纜(lan)(lan)，由金(jin)屬(shu)帶繞包+金(jin)屬(shu)絲(si)編織構成(cheng)。計(ji)算(suan)(suan)機(ji)(ji)電(dian)(dian)(dian)纜(lan)(lan)規格(ge)指的是截(jie)面(mian)大小和線芯數目，計(ji)算(suan)(suan)機(ji)(ji)電(dian)(dian)(dian)纜(lan)(lan)規格(ge)各種各樣(yang)，常用(yong)的有0.5平(ping)方(fang)、0.75平(ping)方(fang)、1平(ping)方(fang)、1.5平(ping)方(fang)、2.5平(ping)方(fang)等等，計(ji)算(suan)(suan)機(ji)(ji)電(dian)(dian)(dian)纜(lan)(lan)廠(chang)家，一般較大規格(ge)的需(xu)要(yao)(yao)廠(chang)家訂(ding)做。計(ji)算(suan)(suan)機(ji)(ji)電(dian)(dian)(dian)纜(lan)(lan)小彎曲半徑：無鎧(kai)裝層應(ying)(ying)(ying)小于電(dian)(dian)(dian)纜(lan)(lan)外徑的6倍，帶鎧(kai)裝層的電(dian)(dian)(dian)纜(lan)(lan)應(ying)(ying)(ying)不小于電(dian)(dian)(dian)纜(lan)(lan)外徑的12倍，計(ji)算(suan)(suan)機(ji)(ji)電(dian)(dian)(dian)纜(lan)(lan)在20℃時用(yong)直流500V電(dian)(dian)(dian)壓(ya)試驗穩(wen)定(ding)充電(dian)(dian)(dian)1min后絕緣電(dian)(dian)(dian)阻(zu)應(ying)(ying)(ying)不小于2500MΩ·Km。

電纜(lan)的屏(ping)蔽(bi)(bi)要(yao)求是根據(ju)不(bu)同(tong)場合(he)分別采(cai)用(yong)(yong)：分屏(ping)蔽(bi)(bi)（僅對絞組有(you)屏(ping)蔽(bi)(bi)，每一個(ge)對絞組都有(you)）、總屏(ping)蔽(bi)(bi)（電纜(lan)僅在纜(lan)按照用(yong)(yong)戶(hu)和使用(yong)(yong)場合(he)的更高要(yao)求，總屏(ping)蔽(bi)(bi)結構可(ke)以采(cai)用(yong)(yong)復合(he)屏(ping)蔽(bi)(bi)方式(shi)(shi)，即包含兩層屏(ping)蔽(bi)(bi)，由金屬(shu)帶(dai)(dai)繞(rao)包+金屬(shu)絲(si)編(bian)織(zhi)構成。其(qi)中金屬(shu)帶(dai)(dai)采(cai)用(yong)(yong)繞(rao)包生(sheng)產(chan)方式(shi)(shi)，搭蓋(gai)(gai)率(lv)(lv)通常應不(bu)小于(yu)15%，但特定標準有(you)特殊(shu)的規(gui)(gui)定，如(ru)TICW/06規(gui)(gui)定屏(ping)蔽(bi)(bi)金屬(shu)帶(dai)(dai)搭蓋(gai)(gai)率(lv)(lv)應不(bu)小于(yu)25%；金屬(shu)絲(si)采(cai)用(yong)(yong)編(bian)織(zhi)生(sheng)產(chan)方式(shi)(shi)，計(ji)算機電纜(lan)規(gui)(gui)格，編(bian)織(zhi)覆蓋(gai)(gai)率(lv)(lv)應不(bu)小于(yu)80%，如(ru)對抗干擾(rao)有(you)較高要(yao)求，覆蓋(gai)(gai)率(lv)(lv)可(ke)不(bu)小于(yu)90%。