行業市場現狀分析

電線電纜行業的最新動態

投資(zi)計劃：2025年國家電網投資(zi)計劃突破6500億(yi)元(yuan)，特高(gao)壓電纜市(shi)(shi)場(chang)(chang)(chang)規模(mo)預(yu)計同(tong)比增(zeng)長(chang)超15%。市(shi)(shi)場(chang)(chang)(chang)規模(mo)：2024年中國電線(xian)(xian)電纜市(shi)(shi)場(chang)(chang)(chang)規模(mo)已達(da)1.35萬億(yi)元(yuan)，預(yu)計未(wei)來(lai)五年將接近1.5萬億(yi)元(yuan)。 行(xing)(xing)業(ye)增(zeng)長(chang)：2023年我國電力電纜行(xing)(xing)業(ye)市(shi)(shi)場(chang)(chang)(chang)規模(mo)約為13017.6億(yi)元(yuan)，同(tong)比增(zeng)長(chang)7%。 發展趨(qu)勢：2025年電線(xian)(xian)電纜行(xing)(xing)業(ye)呈(cheng)現“政策驅動需(xu)求、技術引領升(sheng)級、環保倒逼轉(zhuan)型”的三大主線(xian)(xian)。技術創新：行(xing)(xing)業(ye)集中度提升(sheng)與綠色轉(zhuan)型將

電線電纜知識點

分類：電(dian)(dian)(dian)(dian)(dian)線(xian)(xian)電(dian)(dian)(dian)(dian)(dian)纜(lan)(lan)(lan)主要分為裸電(dian)(dian)(dian)(dian)(dian)線(xian)(xian)、繞組線(xian)(xian)、電(dian)(dian)(dian)(dian)(dian)力電(dian)(dian)(dian)(dian)(dian)纜(lan)(lan)(lan)、通信電(dian)(dian)(dian)(dian)(dian)纜(lan)(lan)(lan)和(he)電(dian)(dian)(dian)(dian)(dian)氣裝(zhuang)(zhuang)備(bei)(bei)用(yong)電(dian)(dian)(dian)(dian)(dian)線(xian)(xian)電(dian)(dian)(dian)(dian)(dian)纜(lan)(lan)(lan)。 基本結(jie)構(gou)：電(dian)(dian)(dian)(dian)(dian)線(xian)(xian)電(dian)(dian)(dian)(dian)(dian)纜(lan)(lan)(lan)的(de)基本結(jie)構(gou)包括導體(ti)（傳導電(dian)(dian)(dian)(dian)(dian)流的(de)部分）和(he)絕緣材料(liao)(liao)（保護導體(ti)的(de)外層）。命名(ming)(ming)(ming)：電(dian)(dian)(dian)(dian)(dian)線(xian)(xian)電(dian)(dian)(dian)(dian)(dian)纜(lan)(lan)(lan)的(de)命名(ming)(ming)(ming)通常較為復雜(za)，通常使用(yong)簡單(dan)名(ming)(ming)(ming)稱結(jie)合型(xing)號規(gui)格來代替(ti)完(wan)整名(ming)(ming)(ming)稱。應用(yong)：電(dian)(dian)(dian)(dian)(dian)力電(dian)(dian)(dian)(dian)(dian)纜(lan)(lan)(lan)用(yong)于(yu)電(dian)(dian)(dian)(dian)(dian)力輸(shu)送，通信電(dian)(dian)(dian)(dian)(dian)纜(lan)(lan)(lan)用(yong)于(yu)數據傳輸(shu)，電(dian)(dian)(dian)(dian)(dian)氣裝(zhuang)(zhuang)備(bei)(bei)用(yong)電(dian)(dian)(dian)(dian)(dian)線(xian)(xian)電(dian)(dian)(dian)(dian)(dian)纜(lan)(lan)(lan)用(yong)于(yu)各種(zhong)電(dian)(dian)(dian)(dian)(dian)氣設備(bei)(bei)的(de)連接。制造工藝(yi)：電(dian)(dian)(dian)(dian)(dian)線(xian)(xian)電(dian)(dian)(dian)(dian)(dian)纜(lan)(lan)(lan)的(de)制造涉及(ji)多種(zhong)工藝(yi)，包括金屬熔煉、塑料(liao)(liao)加(jia)工和(he)紡織

10KV交聯電纜熱縮式制作戶內終端頭的過程

（1）準備階段：檢查熱(re)縮(suo)電(dian)纜(lan)(lan)附(fu)件是(shi)否齊(qi)備，型號(hao)是(shi)否相(xiang)配，檢查并確認電(dian)纜(lan)(lan)有(you)無潮氣后，檢查電(dian)纜(lan)(lan)。（2）切除(chu)多余電(dian)纜(lan)(lan)，根據現場情況決定(ding)電(dian)纜(lan)(lan)長度(du)。（3）剝(bo)除(chu)護(hu)層(ceng)。（4）焊接(jie)(jie)接(jie)(jie)地(di)線，將接(jie)(jie)地(di)線焊接(jie)(jie)在鋼帶(dai)上。（5）填(tian)充三叉口及繞包密封膠(jiao)。（6）安裝(zhuang)三芯(xin)分(fen)(fen)支護(hu)套，將護(hu)套套入根部(bu)，從中(zhong)部(bu)開(kai)始收(shou)縮(suo)，先往(wang)根部(bu)，再往(wang)指(zhi)部(bu)。（7）剝(bo)銅 帶(dai)和外半(ban)導(dao)電(dian)層(ceng)，剝(bo)切三芯(xin)分(fen)(fen)支套口20mm以上的銅帶(dai)，嚴禁損傷(shang)主絕(jue)緣，清除(chu)干凈半(ban)導(dao)電(dian)層(ceng)。（

電線電纜產品主要分為五大類

(1)、裸電線及裸導(dao)體制品(pin)本(ben)(ben)類產(chan)品(pin)的主(zhu)(zhu)要(yao)(yao)特征(zheng)(zheng)是(shi)(shi)：純(chun)的導(dao)體金屬，無絕(jue)緣及護套層(ceng)，如(ru)鋼(gang)芯鋁(lv)絞(jiao)線、銅鋁(lv)匯(hui)流排、電力機車線等；加工(gong)(gong)工(gong)(gong)藝主(zhu)(zhu)要(yao)(yao)是(shi)(shi)壓力加工(gong)(gong)，如(ru)熔煉、壓延、拉(la)制、絞(jiao)合(he)/緊壓絞(jiao)合(he)等；產(chan)品(pin)主(zhu)(zhu)要(yao)(yao)用(yong)在(zai)城郊、農村、用(yong)戶主(zhu)(zhu)線、開關(guan)柜等。(2)、電力電纜本(ben)(ben)類產(chan)品(pin)主(zhu)(zhu)要(yao)(yao)特征(zheng)(zheng)是(shi)(shi)：在(zai)導(dao)體外擠（繞）包絕(jue)緣層(ceng)，如(ru)架空絕(jue)緣電纜，或幾芯絞(jiao)合(he)（對應電力系統(tong)的相線、零線和(he)地線），如(ru)二(er)芯以上架空絕(jue)緣電纜，或再增加護套層(ceng)，如(ru)塑料/橡套

在選擇電力電纜的截面時，應遵照哪些規定？

（1）電纜(lan)(lan)的(de)額定電壓要(yao)(yao)大于或(huo)等于安裝(zhuang)點供(gong)電系(xi)(xi)統(tong)的(de)額定電壓；（2）電纜(lan)(lan)持續容許(xu)電流(liu)應等于或(huo)大于供(gong)電負載(zai)的(de)最大持續電流(liu)；（3）線芯截面要(yao)(yao)滿(man)足供(gong)電系(xi)(xi)統(tong)短(duan)(duan)路時(shi)的(de)穩定性(xing)的(de)要(yao)(yao)求；（4）根據電纜(lan)(lan)長度(du)驗(yan)算(suan)電壓降是否符合要(yao)(yao)求；（5）線路末端的(de)最小(xiao)短(duan)(duan)路電流(liu)應能(neng)使保(bao)護裝(zhuang)置可靠的(de)動作。

線纜符號含義

R－連接用(yong)(yong)軟電纜（電線），軟結構V－絕緣聚(ju)氯(lv)乙烯(xi)(xi)V－聚(ju)氯(lv)乙烯(xi)(xi)絕緣V－聚(ju)氯(lv)乙烯(xi)(xi)護(hu)套(tao)(tao)B－平型（扁(bian)形）S－雙(shuang)絞型A－鍍(du)錫(xi)或鍍(du)銀F－耐高溫(wen)P－編(bian)織(zhi)屏蔽P2－銅帶屏蔽P22－鋼帶鎧裝Y—預制型、一般省略，或聚(ju)烯(xi)(xi)烴護(hu)套(tao)(tao)FD—產品類別代號(hao)，指分支電纜。將要頒布的建設(she)部(bu)標(biao)準用(yong)(yong)FZ表示，其實質相(xiang)同YJ—交聯聚(ju)乙烯(xi)(xi)絕緣V—聚(ju)氯(lv)乙烯(xi)(xi)絕緣或護(hu)套(tao)(tao)ZR—阻(zu)燃型NH—耐火(huo)型WDZ—無鹵(lu)(lu)低煙(yan)阻(zu)燃型WDN—無鹵(lu)(lu)低煙(yan)耐火(huo)型RV 銅芯

工作電流及計算

電(dian)(dian)(線(xian))纜工作電(dian)(dian)流計算公式：單(dan)相(xiang)I=P÷(U×cosΦ)P-功(gong)率(lv)(lv)(W)；U-電(dian)(dian)壓(220V)；cosΦ-功(gong)率(lv)(lv)因素(0.8)；I-相(xiang)線(xian)電(dian)(dian)流(A)。三(san)相(xiang)I=P÷(U×1.732×cosΦ)P-功(gong)率(lv)(lv)(W)；U-電(dian)(dian)壓(380V)；cosΦ-功(gong)率(lv)(lv)因素(0.8)；I-相(xiang)線(xian)電(dian)(dian)流(A)。一(yi)般銅導線(xian)的(de)(de)(de)安(an)全截流量為5-8A/平方毫米(mi)，鋁導線(xian)的(de)(de)(de)安(an)全截流量為3-5A/平方毫米(mi)。在單(dan)相(xiang)220V線(xian)路中，每1KW功(gong)率(lv)(lv)的(de)(de)(de)電(dian)(dian)流在4

電力電纜故障點尋找方法

在電(dian)(dian)(dian)(dian)(dian)力(li)(li)(li)系統中(zhong)(zhong)常(chang)用的(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)纜(lan)有電(dian)(dian)(dian)(dian)(dian)力(li)(li)(li)電(dian)(dian)(dian)(dian)(dian)纜(lan)和(he)控制(zhi)電(dian)(dian)(dian)(dian)(dian)纜(lan)兩大類，其中(zhong)(zhong)電(dian)(dian)(dian)(dian)(dian)力(li)(li)(li)電(dian)(dian)(dian)(dian)(dian)纜(lan)是(shi)用來輸(shu)送和(he)分配大功率電(dian)(dian)(dian)(dian)(dian)能的(de)(de)(de)。按絕(jue)緣(yuan)(yuan)材料的(de)(de)(de)不同，可以(yi)分為油浸紙絕(jue)緣(yuan)(yuan)電(dian)(dian)(dian)(dian)(dian)力(li)(li)(li)電(dian)(dian)(dian)(dian)(dian)纜(lan)、橡皮絕(jue) 緣(yuan)(yuan)電(dian)(dian)(dian)(dian)(dian)力(li)(li)(li)電(dian)(dian)(dian)(dian)(dian)纜(lan)和(he)聚氯乙烯絕(jue)緣(yuan)(yuan)電(dian)(dian)(dian)(dian)(dian)纜(lan)，在工程上應用最廣(guang)泛(fan)的(de)(de)(de)是(shi)油浸紙絕(jue)緣(yuan)(yuan)電(dian)(dian)(dian)(dian)(dian)力(li)(li)(li)電(dian)(dian)(dian)(dian)(dian)纜(lan)，由于電(dian)(dian)(dian)(dian)(dian)纜(lan)在制(zhi)作中(zhong)(zhong)，以(yi)及鋪設線(xian)路、環境溫度(du)、施工原則等，國家都有明文(wen)規定， 在此(ci)不再(zai)贅述，本文(wen)主要(yao)對電(dian)(dian)(dian)(dian)(dian)力(li)(li)(li)電(dian)(dian)(dian)(dian)(dian)纜(lan)易發(fa)生故障(zhang)的(de)(de)(de)可能點及如何(he)進行測試的(de)(de)(de)幾種(zhong)方法，介(jie)紹給大家。1、電(dian)(dian)(dian)(dian)(dian)纜(lan)故障(zhang)的(de)(de)(de)類型及

電纜出現故障無法使用的原因

電(dian)纜(lan)(lan)(lan)失效(xiao)盡管看(kan)上(shang)去好像有很多(duo)原(yuan)因(yin)(yin),但是實(shi)際上(shang)僅有四個(ge)(ge)基本原(yuan)因(yin)(yin)導(dao)致在拖拽電(dian)纜(lan)(lan)(lan)時電(dian)纜(lan)(lan)(lan)現(xian)(xian)(xian)場（露天或(huo)地下）失效(xiao)。它們(men)是:機(ji)械(xie)損傷(shang);彎曲半徑超出(chu)(chu)推薦值;電(dian)流過(guo)載(zai);過(guo)度張力.上(shang)述原(yuan)因(yin)(yin)單一或(huo)聯合出(chu)(chu)現(xian)(xian)(xian)都(dou)會導(dao)致嚴重的停(ting)機(ji)故(gu)障。認(ren)識到問題的癥(zheng)狀可幫助電(dian)纜(lan)(lan)(lan)用戶確定問題所在并(bing)著手(shou)解決。當四個(ge)(ge)基本誘因(yin)(yin)之一出(chu)(chu)現(xian)(xian)(xian)時，要(yao)么(me)導(dao)致電(dian)纜(lan)(lan)(lan)立即無法使用，要(yao)么(me)相(xiang)繼出(chu)(chu)現(xian)(xian)(xian)一系列問題，表明電(dian)纜(lan)(lan)(lan)已經出(chu)(chu)現(xian)(xian)(xian)故(gu)障。1、機(ji)械(xie)損傷(shang)　　直接表現(xian)(xian)(xian)：電(dian)纜(lan)(lan)(lan)的外護套經

電線電纜用電安全的幾點小常識

電(dian)線(xian)(xian)電(dian)纜(lan)(lan)用電(dian)安(an)全(quan)的(de)幾點小常識：1、 電(dian)線(xian)(xian)電(dian)纜(lan)(lan)線(xian)(xian)路以及電(dian)線(xian)(xian)電(dian)纜(lan)(lan)的(de)絕緣部分必須保持通順及良好，并定期(qi)按時檢查；插座、開(kai)關等處的(de)電(dian)線(xian)(xian)電(dian)纜(lan)(lan)絕不能外露(lu)，以防漏電(dian)、觸電(dian)等；不能亂拉亂接電(dian)線(xian)(xian)電(dian)纜(lan)(lan)，多大平方的(de)電(dian)線(xian)(xian)電(dian)纜(lan)(lan)

自動開關脫扣器整定電流選擇的口訣

自(zi)動(dong)(dong)(dong)(dong)開關(guan)脫扣器(qi)整定電流選擇的口(kou)訣(jue)1.用途根(gen)據電動(dong)(dong)(dong)(dong)機(ji)(ji)容(rong)量(liang)(liang)(千(qian)瓦(wa))或變壓(ya)器(qi)容(rong)量(liang)(liang)(千(qian)伏安)直(zhi)接決定脫扣器(qi)額定電流的大小（安)2.口(kou)訣(jue):電動(dong)(dong)(dong)(dong)機(ji)(ji)瞬動(dong)(dong)(dong)(dong)，千(qian)瓦(wa)20 倍變壓(ya)器(qi)瞬動(dong)(dong)(dong)(dong)，千(qian)伏安3 倍熱脫扣器(qi)，按額定值3.說