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電(dian)線(xian)是(shi)由(you)一根或(huo)幾根柔軟的(de)導(dao)線(xian)組(zu)成，外面(mian)包(bao)以(yi)輕軟的(de)護層；電(dian)纜是(shi)由(you)一根或(huo)幾根絕緣包(bao)導(dao)線(xian)組(zu)成，外面(mian)再包(bao)以(yi)金屬或(huo)橡(xiang)皮制的(de)堅韌外層。 電(dian)纜與電(dian)線一(yi)般(ban)都由(you)芯線、絕(jue)緣包皮和保護外皮三(san)個部分(fen)組(zu)成(cheng)。 常(chang)用電纜的(de)特性如下：CEF——乙(yi)丙橡(xiang)(xiang)膠(jiao)絕(jue)(jue)緣氯丁橡(xiang)(xiang)膠(jiao)護套，船用(yong)阻燃電(dian)力(li)電(dian)纜。CVV——聚氯乙(yi)烯(xi)絕(jue)(jue)緣，聚氯乙(yi)烯(xi)護套船用(yong)阻燃電(dian)力(li)電(dian)纜。 氧艙(cang)電(dian)線(xian)常采(cai)用(yong)BV，BX，RV，RVV系列電(dian)線(xian)，其(qi)中： BV——銅芯聚氯乙烯絕緣電(dian)(dian)線，長期允許(xu)溫(wen)度65℃，最低溫(wen)度-15℃，工(gong)作電(dian)(dian)壓交(jiao)流500V，直流1000V，固定敷設于室內、外，可(ke)明敷也可(ke)暗(an)敷。BX——銅芯橡皮絕(jue)緣線，最高(gao)使用溫度(du)65℃，敷(fu)于(yu)室內(nei)。RV——聚氯乙烯絕緣單芯軟線(xian)，最高(gao)使(shi)用(yong)溫度65℃，最低使(shi)用(yong)溫度-15℃，工(gong)作(zuo)電壓(ya)交流(liu)250V，直流(liu)500V，用(yong)作(zuo)儀(yi)器和設備的內部接(jie)線(xian)。RVV——銅(tong)芯(xin)聚氯(lv)(lv)(lv)(lv)乙(yi)(yi)烯(xi)(xi)(xi)(xi)(xi)絕(jue)(jue)(jue)(jue)(jue)緣(yuan)(yuan)和(he)(he)護(hu)套(tao)軟電(dian)(dian)(dian)(dian)(dian)線(xian)(xian)(xian)(xian)，允(yun)許長期工(gong)作溫(wen)度105℃，工(gong)作電(dian)(dian)(dian)(dian)(dian)壓交流500V，直(zhi)流1000V，用于潮(chao)濕，機械(xie)防護(hu)要求(qiu)高，經(jing)常(chang)移(yi)動(dong)和(he)(he)彎曲的(de)場合。 其實，“電(dian)(dian)(dian)(dian)(dian)線(xian)(xian)(xian)(xian)”和(he)(he)“電(dian)(dian)(dian)(dian)(dian)纜”并沒(mei)有嚴格的(de)界(jie)限。通常(chang)將芯(xin)數少、產(chan)品(pin)直(zhi)徑小(xiao)、結構簡單的(de)產(chan)品(pin)稱為(wei)電(dian)(dian)(dian)(dian)(dian)線(xian)(xian)(xian)(xian)，沒(mei)有絕(jue)(jue)(jue)(jue)(jue)緣(yuan)(yuan)的(de)稱為(wei)裸(luo)電(dian)(dian)(dian)(dian)(dian)線(xian)(xian)(xian)(xian)，其他的(de)稱為(wei)電(dian)(dian)(dian)(dian)(dian)纜；導體截面積較(jiao)大(da)的(de)(大(da)于6平方毫米(mi))稱為(wei)大(da)電(dian)(dian)(dian)(dian)(dian)線(xian)(xian)(xian)(xian)，較(jiao)小(xiao)的(de)(小(xiao)于或等于6平方毫米(mi))稱為(wei)小(xiao)電(dian)(dian)(dian)(dian)(dian)線(xian)(xian)(xian)(xian)，絕(jue)(jue)(jue)(jue)(jue)緣(yuan)(yuan)電(dian)(dian)(dian)(dian)(dian)線(xian)(xian)(xian)(xian)又稱為(wei)布電(dian)(dian)(dian)(dian)(dian)線(xian)(xian)(xian)(xian) 這(zhe)樣說(shuo)比較(jiao)簡單,容易理解!! 電(dian)(dian)(dian)(dian)(dian)纜一(yi)般(ban)有2層以上的(de)絕(jue)(jue)(jue)(jue)(jue)緣(yuan)(yuan)，多數是(shi)多芯(xin)結構，繞(rao)在電(dian)(dian)(dian)(dian)(dian)纜盤(pan)上，長度一(yi)般(ban)大(da)于100米(mi)。電(dian)(dian)(dian)(dian)(dian)線(xian)(xian)(xian)(xian)一(yi)般(ban)是(shi)單層絕(jue)(jue)(jue)(jue)(jue)緣(yuan)(yuan)，單芯(xin)，100米(mi)一(yi)卷(juan)，無(wu)線(xian)(xian)(xian)(xian)盤(pan)。 電(dian)(dian)(dian)(dian)(dian)纜常(chang)見型號： VV表(biao)示(shi)：聚氯(lv)(lv)(lv)(lv)乙(yi)(yi)烯(xi)(xi)(xi)(xi)(xi)絕(jue)(jue)(jue)(jue)(jue)緣(yuan)(yuan)（第一(yi)個V），聚氯(lv)(lv)(lv)(lv)乙(yi)(yi)烯(xi)(xi)(xi)(xi)(xi)護(hu)套(tao)（第二個V） YJV22表(biao)示(shi)：交連聚氯(lv)(lv)(lv)(lv)乙(yi)(yi)烯(xi)(xi)(xi)(xi)(xi)絕(jue)(jue)(jue)(jue)(jue)緣(yuan)(yuan)（YJ），聚氯(lv)(lv)(lv)(lv)乙(yi)(yi)烯(xi)(xi)(xi)(xi)(xi)護(hu)套(tao)（V），鋼帶凱裝（22） 型號加“ZR”或“FR”的(de)為(wei)阻燃電(dian)(dian)(dian)(dian)(dian)纜（電(dian)(dian)(dian)(dian)(dian)線(xian)(xian)(xian)(xian)）。加“L”為(wei)鋁線(xian)(xian)(xian)(xian) 電(dian)(dian)(dian)(dian)(dian)線(xian)(xian)(xian)(xian)的(de)型號較(jiao)簡單： BVV--聚氯(lv)(lv)(lv)(lv)乙(yi)(yi)烯(xi)(xi)(xi)(xi)(xi)絕(jue)(jue)(jue)(jue)(jue)緣(yuan)(yuan)和(he)(he)護(hu)套(tao)銅(tong)心(xin)(xin)線(xian)(xian)(xian)(xian)， BV--聚氯(lv)(lv)(lv)(lv)乙(yi)(yi)烯(xi)(xi)(xi)(xi)(xi)絕(jue)(jue)(jue)(jue)(jue)緣(yuan)(yuan)銅(tong)心(xin)(xin)線(xian)(xian)(xian)(xian)， BYJ--銅(tong)芯(xin)交聯(lian)聚烯(xi)(xi)(xi)(xi)(xi)烴絕(jue)(jue)(jue)(jue)(jue)緣(yuan)(yuan)電(dian)(dian)(dian)(dian)(dian)線(xian)(xian)(xian)(xian)，BVR--聚氯(lv)(lv)(lv)(lv)乙(yi)(yi)烯(xi)(xi)(xi)(xi)(xi)絕(jue)(jue)(jue)(jue)(jue)緣(yuan)(yuan)銅(tong)心(xin)(xin)軟線(xian)(xian)(xian)(xian)， BX--橡(xiang)皮絕(jue)(jue)(jue)(jue)(jue)緣(yuan)(yuan)銅(tong)心(xin)(xin)線(xian)(xian)(xian)(xian)， RHF--氯(lv)(lv)(lv)(lv)丁橡(xiang)套(tao)銅(tong)心(xin)(xin)軟線(xian)(xian)(xian)(xian)。

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