行業市場現狀分析

電線電纜行業的最新動態

投資計(ji)劃：2025年國家電(dian)網投資計(ji)劃突破6500億(yi)元，特(te)高壓電(dian)纜市(shi)(shi)(shi)場規模(mo)預計(ji)同比增(zeng)長超15%。市(shi)(shi)(shi)場規模(mo)：2024年中(zhong)國電(dian)線(xian)電(dian)纜市(shi)(shi)(shi)場規模(mo)已達1.35萬億(yi)元，預計(ji)未來五年將接近1.5萬億(yi)元。 行(xing)業增(zeng)長：2023年我國電(dian)力電(dian)纜行(xing)業市(shi)(shi)(shi)場規模(mo)約為13017.6億(yi)元，同比增(zeng)長7%。 發(fa)展趨勢：2025年電(dian)線(xian)電(dian)纜行(xing)業呈現“政策驅動需(xu)求、技術(shu)引領(ling)升(sheng)級、環保(bao)倒(dao)逼轉(zhuan)型”的(de)三大主線(xian)。技術(shu)創新：行(xing)業集中(zhong)度(du)提升(sheng)與綠色轉(zhuan)型將

電線電纜知識點

分類(lei)：電(dian)(dian)(dian)(dian)線(xian)(xian)電(dian)(dian)(dian)(dian)纜(lan)(lan)(lan)主(zhu)要分為裸電(dian)(dian)(dian)(dian)線(xian)(xian)、繞組線(xian)(xian)、電(dian)(dian)(dian)(dian)力(li)電(dian)(dian)(dian)(dian)纜(lan)(lan)(lan)、通信電(dian)(dian)(dian)(dian)纜(lan)(lan)(lan)和(he)電(dian)(dian)(dian)(dian)氣裝備用(yong)(yong)電(dian)(dian)(dian)(dian)線(xian)(xian)電(dian)(dian)(dian)(dian)纜(lan)(lan)(lan)。 基(ji)本結(jie)構：電(dian)(dian)(dian)(dian)線(xian)(xian)電(dian)(dian)(dian)(dian)纜(lan)(lan)(lan)的(de)基(ji)本結(jie)構包(bao)括導(dao)體(ti)（傳導(dao)電(dian)(dian)(dian)(dian)流的(de)部分）和(he)絕緣材(cai)料（保護導(dao)體(ti)的(de)外層(ceng)）。命名(ming)(ming)：電(dian)(dian)(dian)(dian)線(xian)(xian)電(dian)(dian)(dian)(dian)纜(lan)(lan)(lan)的(de)命名(ming)(ming)通常較(jiao)為復(fu)雜，通常使用(yong)(yong)簡單名(ming)(ming)稱結(jie)合型(xing)號(hao)規格來(lai)代替完整名(ming)(ming)稱。應用(yong)(yong)：電(dian)(dian)(dian)(dian)力(li)電(dian)(dian)(dian)(dian)纜(lan)(lan)(lan)用(yong)(yong)于(yu)電(dian)(dian)(dian)(dian)力(li)輸送，通信電(dian)(dian)(dian)(dian)纜(lan)(lan)(lan)用(yong)(yong)于(yu)數據傳輸，電(dian)(dian)(dian)(dian)氣裝備用(yong)(yong)電(dian)(dian)(dian)(dian)線(xian)(xian)電(dian)(dian)(dian)(dian)纜(lan)(lan)(lan)用(yong)(yong)于(yu)各種電(dian)(dian)(dian)(dian)氣設備的(de)連接。制造(zao)工藝：電(dian)(dian)(dian)(dian)線(xian)(xian)電(dian)(dian)(dian)(dian)纜(lan)(lan)(lan)的(de)制造(zao)涉及多(duo)種工藝，包(bao)括金屬熔煉、塑料加(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)縮電纜(lan)附件是(shi)否(fou)齊備，型號是(shi)否(fou)相配，檢查并確認電纜(lan)有無(wu)潮氣后，檢查電纜(lan)。（2）切除(chu)多余電纜(lan)，根(gen)據現場情況決定電纜(lan)長(chang)度。（3）剝(bo)除(chu)護(hu)層(ceng)。（4）焊接接地線(xian)，將(jiang)接地線(xian)焊接在鋼(gang)帶上。（5）填(tian)充(chong)三叉(cha)口及繞(rao)包密封膠。（6）安裝三芯分支(zhi)護(hu)套，將(jiang)護(hu)套套入根(gen)部，從中部開始收縮，先(xian)往(wang)(wang)根(gen)部，再往(wang)(wang)指部。（7）剝(bo)銅 帶和外半(ban)導電層(ceng)，剝(bo)切三芯分支(zhi)套口20mm以上的(de)銅帶，嚴(yan)禁損傷主絕緣，清(qing)除(chu)干凈半(ban)導電層(ceng)。（

電線電纜產品主要分為五大類

(1)、裸電(dian)線(xian)及(ji)裸導體(ti)制(zhi)(zhi)品本類產品的主要(yao)(yao)特征(zheng)是：純的導體(ti)金屬(shu)，無(wu)絕(jue)緣及(ji)護套(tao)層(ceng)，如鋼芯鋁(lv)絞線(xian)、銅鋁(lv)匯流排、電(dian)力(li)機車線(xian)等；加(jia)(jia)工(gong)(gong)工(gong)(gong)藝主要(yao)(yao)是壓力(li)加(jia)(jia)工(gong)(gong)，如熔(rong)煉、壓延、拉制(zhi)(zhi)、絞合/緊壓絞合等；產品主要(yao)(yao)用在城郊(jiao)、農村(cun)、用戶主線(xian)、開關柜等。(2)、電(dian)力(li)電(dian)纜本類產品主要(yao)(yao)特征(zheng)是：在導體(ti)外(wai)擠(ji)（繞）包絕(jue)緣層(ceng)，如架(jia)空(kong)絕(jue)緣電(dian)纜，或幾芯絞合（對應電(dian)力(li)系(xi)統的相線(xian)、零(ling)線(xian)和地(di)線(xian)），如二芯以上架(jia)空(kong)絕(jue)緣電(dian)纜，或再增加(jia)(jia)護套(tao)層(ceng)，如塑料(liao)/橡(xiang)套(tao)

在選擇電力電纜的截面時，應遵照哪些規定？

（1）電(dian)(dian)纜(lan)的(de)額(e)定電(dian)(dian)壓要(yao)(yao)大于(yu)或等于(yu)安(an)裝(zhuang)點供(gong)電(dian)(dian)系統的(de)額(e)定電(dian)(dian)壓；（2）電(dian)(dian)纜(lan)持續(xu)容許電(dian)(dian)流(liu)應等于(yu)或大于(yu)供(gong)電(dian)(dian)負(fu)載(zai)的(de)最(zui)大持續(xu)電(dian)(dian)流(liu)；（3）線(xian)(xian)芯截面要(yao)(yao)滿(man)足(zu)供(gong)電(dian)(dian)系統短(duan)路(lu)時的(de)穩定性的(de)要(yao)(yao)求；（4）根據電(dian)(dian)纜(lan)長度驗算電(dian)(dian)壓降(jiang)是否符合要(yao)(yao)求；（5）線(xian)(xian)路(lu)末(mo)端的(de)最(zui)小短(duan)路(lu)電(dian)(dian)流(liu)應能使保護裝(zhuang)置可靠的(de)動作。

線纜符號含義

R－連接(jie)用軟電(dian)纜（電(dian)線），軟結構V－絕緣聚(ju)氯(lv)(lv)乙烯V－聚(ju)氯(lv)(lv)乙烯絕緣V－聚(ju)氯(lv)(lv)乙烯護(hu)套B－平型(xing)（扁形）S－雙(shuang)絞型(xing)A－鍍(du)錫或(huo)鍍(du)銀F－耐(nai)高溫(wen)P－編(bian)織屏(ping)蔽P2－銅帶(dai)屏(ping)蔽P22－鋼帶(dai)鎧裝Y—預制型(xing)、一般(ban)省略，或(huo)聚(ju)烯烴護(hu)套FD—產品類別代號(hao)，指分支電(dian)纜。將要頒(ban)布的建設(she)部標準用FZ表示，其實質相同YJ—交聯聚(ju)乙烯絕緣V—聚(ju)氯(lv)(lv)乙烯絕緣或(huo)護(hu)套ZR—阻(zu)燃型(xing)NH—耐(nai)火(huo)型(xing)WDZ—無鹵(lu)低(di)煙(yan)阻(zu)燃型(xing)WDN—無鹵(lu)低(di)煙(yan)耐(nai)火(huo)型(xing)RV 銅芯

工作電流及計算

電(線(xian))纜工作電流(liu)(liu)(liu)計算公式：單(dan)相(xiang)(xiang)I=P÷(U×cosΦ)P-功(gong)率(lv)(lv)(W)；U-電壓(ya)(220V)；cosΦ-功(gong)率(lv)(lv)因素(su)(0.8)；I-相(xiang)(xiang)線(xian)電流(liu)(liu)(liu)(A)。三(san)相(xiang)(xiang)I=P÷(U×1.732×cosΦ)P-功(gong)率(lv)(lv)(W)；U-電壓(ya)(380V)；cosΦ-功(gong)率(lv)(lv)因素(su)(0.8)；I-相(xiang)(xiang)線(xian)電流(liu)(liu)(liu)(A)。一般銅導線(xian)的安全(quan)截流(liu)(liu)(liu)量為5-8A/平方(fang)(fang)毫米(mi)，鋁導線(xian)的安全(quan)截流(liu)(liu)(liu)量為3-5A/平方(fang)(fang)毫米(mi)。在(zai)單(dan)相(xiang)(xiang)220V線(xian)路中，每1KW功(gong)率(lv)(lv)的電流(liu)(liu)(liu)在(zai)4

電力電纜故障點尋找方法

在(zai)電(dian)力(li)系統(tong)中常用的(de)(de)電(dian)纜(lan)(lan)有電(dian)力(li)電(dian)纜(lan)(lan)和(he)控制(zhi)電(dian)纜(lan)(lan)兩大類，其中電(dian)力(li)電(dian)纜(lan)(lan)是(shi)用來(lai)輸送(song)和(he)分(fen)配大功率電(dian)能(neng)的(de)(de)。按絕(jue)緣(yuan)(yuan)材料的(de)(de)不同，可(ke)以(yi)(yi)分(fen)為油浸紙絕(jue)緣(yuan)(yuan)電(dian)力(li)電(dian)纜(lan)(lan)、橡(xiang)皮(pi)絕(jue) 緣(yuan)(yuan)電(dian)力(li)電(dian)纜(lan)(lan)和(he)聚氯乙(yi)烯絕(jue)緣(yuan)(yuan)電(dian)纜(lan)(lan)，在(zai)工程上應(ying)用最廣泛的(de)(de)是(shi)油浸紙絕(jue)緣(yuan)(yuan)電(dian)力(li)電(dian)纜(lan)(lan)，由于(yu)電(dian)纜(lan)(lan)在(zai)制(zhi)作中，以(yi)(yi)及鋪(pu)設線路(lu)、環境溫度、施工原則等，國家都(dou)有明文規(gui)定， 在(zai)此不再贅(zhui)述(shu)，本文主要(yao)對電(dian)力(li)電(dian)纜(lan)(lan)易發(fa)生(sheng)故(gu)障的(de)(de)可(ke)能(neng)點及如(ru)何進行測(ce)試的(de)(de)幾種方(fang)法，介(jie)紹給大家。1、電(dian)纜(lan)(lan)故(gu)障的(de)(de)類型及

電纜出現故障無法使用的原因

電(dian)纜(lan)(lan)失效(xiao)(xiao)盡(jin)管看上去(qu)好像有很(hen)多原(yuan)因,但是實際上僅(jin)有四個(ge)基(ji)本(ben)原(yuan)因導致(zhi)在拖拽電(dian)纜(lan)(lan)時電(dian)纜(lan)(lan)現(xian)場（露(lu)天或地下）失效(xiao)(xiao)。它們是:機械損傷(shang);彎(wan)曲(qu)半徑超出(chu)(chu)推薦值;電(dian)流過載;過度(du)張(zhang)力(li).上述(shu)原(yuan)因單一或聯合出(chu)(chu)現(xian)都會導致(zhi)嚴(yan)重(zhong)的停機故障(zhang)。認識到問(wen)題的癥狀可幫助電(dian)纜(lan)(lan)用(yong)戶確定問(wen)題所在并著手解決。當四個(ge)基(ji)本(ben)誘因之一出(chu)(chu)現(xian)時，要(yao)么導致(zhi)電(dian)纜(lan)(lan)立即無法使用(yong)，要(yao)么相(xiang)繼出(chu)(chu)現(xian)一系列(lie)問(wen)題，表(biao)明電(dian)纜(lan)(lan)已(yi)經出(chu)(chu)現(xian)故障(zhang)。1、機械損傷(shang)　　直接表(biao)現(xian)：電(dian)纜(lan)(lan)的外護套經

電線電纜用電安全的幾點小常識

電(dian)(dian)(dian)線(xian)電(dian)(dian)(dian)纜(lan)用電(dian)(dian)(dian)安全的(de)幾(ji)點(dian)小(xiao)常(chang)識：1、 電(dian)(dian)(dian)線(xian)電(dian)(dian)(dian)纜(lan)線(xian)路(lu)以(yi)(yi)及(ji)電(dian)(dian)(dian)線(xian)電(dian)(dian)(dian)纜(lan)的(de)絕(jue)緣(yuan)部分必須保(bao)持通順及(ji)良好，并定期按時檢(jian)查；插座(zuo)、開關(guan)等處的(de)電(dian)(dian)(dian)線(xian)電(dian)(dian)(dian)纜(lan)絕(jue)不能外露，以(yi)(yi)防(fang)漏(lou)電(dian)(dian)(dian)、觸(chu)電(dian)(dian)(dian)等；不能亂拉亂接電(dian)(dian)(dian)線(xian)電(dian)(dian)(dian)纜(lan)，多大平方的(de)電(dian)(dian)(dian)線(xian)電(dian)(dian)(dian)纜(lan)

自動開關脫扣器整定電流選擇的口訣

自動開關(guan)脫(tuo)扣(kou)器整定電(dian)流選(xuan)擇(ze)的口訣1.用途根據電(dian)動機容量(千瓦(wa))或變(bian)壓器容量(千伏安)直接決(jue)定脫(tuo)扣(kou)器額(e)定電(dian)流的大小（安)2.口訣:電(dian)動機瞬動，千瓦(wa)20 倍(bei)變(bian)壓器瞬動，千伏安3 倍(bei)熱脫(tuo)扣(kou)器，按額(e)定值3.說(shuo)