我國電(dian)(dian)線(xian)電(dian)(dian)纜(lan)產業(ye)(ye)(ye)發展已經具有(you)較長時間的(de)(de)(de)(de)歷史,形成了(le)成熟的(de)(de)(de)(de)產業(ye)(ye)(ye)鏈(lian)和完整(zheng)的(de)(de)(de)(de)工業(ye)(ye)(ye)體系,參與競爭的(de)(de)(de)(de)企(qi)業(ye)(ye)(ye)數量(liang)眾多,2018年我國電(dian)(dian)線(xian)電(dian)(dian)纜(lan)行業(ye)(ye)(ye)規上(shang)企(qi)業(ye)(ye)(ye)數量(liang)已經達到了(le)4049家,企(qi)業(ye)(ye)(ye)集(ji)中(zhong)在華東地區(qu)。我國線(xian)纜(lan)行業(ye)(ye)(ye)呈現出以(yi)(yi)大型企(qi)業(ye)(ye)(ye)為主,外資企(qi)業(ye)(ye)(ye)和中(zhong)小(xiao)企(qi)業(ye)(ye)(ye)為輔的(de)(de)(de)(de)競爭格局。從行業(ye)(ye)(ye)整(zheng)體來看,我國企(qi)業(ye)(ye)(ye)的(de)(de)(de)(de)產品主要集(ji)中(zhong)在中(zhong)低端市場(chang),行業(ye)(ye)(ye)集(ji)中(zhong)度低,中(zhong)小(xiao)企(qi)業(ye)(ye)(ye)占比(bi) 95%以(yi)(yi)上(shang),前十名(ming)企(qi)業(ye)(ye)(ye)僅占國內(nei)市場(chang)份額的(de)(de)(de)(de) 7%至 10%。
目(mu)前,我國墻(qiang)壁開關插座(zuo)行(xing)業(ye)參與(yu)者眾(zhong)多,墻(qiang)壁開關插座(zuo)行(xing)業(ye)從業(ye)企業(ye)已達2000家,形(xing)成(cheng)(cheng)了廣東、江浙、北京(jing)三大生產基地。以西門子、松下(xia)為代表的外(wai)資品牌通過并購國內(nei)企業(ye)或設立(li)銷售(shou)代理的方式進入市(shi)場,形(xing)成(cheng)(cheng)了跨國公(gong)司與(yu)國內(nei)本土企業(ye)并存(cun)的競(jing)(jing)爭(zheng)格(ge)局。市(shi)場主要國外(wai)競(jing)(jing)爭(zheng)品牌有西門子、施耐德、羅(luo)格(ge)朗、西蒙與(yu)松下(xia);主要國內(nei)本土競(jing)(jing)爭(zheng)品牌有公(gong)牛、正(zheng)泰、德力(li)西、歐普、飛雕與(yu)鴻雁。
目(mu)前(qian)我國插座生產(chan)(chan)企(qi)(qi)業超過了(le)1500家,其中市場(chang)(chang)知名品牌(pai)僅有20個左右,公(gong)牛品牌(pai)插座產(chan)(chan)品占據最大的市場(chang)(chang)份額,約達20%,插座生產(chan)(chan)企(qi)(qi)業依然以中小(xiao)企(qi)(qi)業為(wei)主。從市場(chang)(chang)需求上看,消費(fei)者(zhe)(zhe)不再僅僅滿足于產(chan)(chan)品的質量(liang),開始重(zhong)視產(chan)(chan)品的外觀和功能,用電安全(quan)更是(shi)成為(wei)消費(fei)者(zhe)(zhe)的根本需求。
空(kong)氣(qi)開(kai)關(guan)(guan)(guan)應用(yong)在我們的(de)(de)家庭中,屬于低壓斷(duan)(duan)(duan)路器的(de)(de)一(yi)種,只要電(dian)(dian)路中電(dian)(dian)流超(chao)過了空(kong)氣(qi)開(kai)關(guan)(guan)(guan)的(de)(de)額定電(dian)(dian)流以后,空(kong)氣(qi)開(kai)關(guan)(guan)(guan)就會自動(dong)斷(duan)(duan)(duan)開(kai),切斷(duan)(duan)(duan)電(dian)(dian)源,防(fang)止電(dian)(dian)路由于電(dian)(dian)流過大而(er)燒毀的(de)(de)影響。空(kong)氣(qi)開(kai)關(guan)(guan)(guan)在自動(dong)斷(duan)(duan)(duan)開(kai)開(kai)關(guan)(guan)(guan)的(de)(de)時候會產(chan)生(sheng)一(yi)個電(dian)(dian)弧(hu),而(er)空(kong)氣(qi)開(kai)關(guan)(guan)(guan)就是(shi)采用(yong)空(kong)氣(qi)作為滅(mie)弧(hu)的(de)(de)介質來進行自動(dong)切斷(duan)(duan)(duan)電(dian)(dian)路的(de)(de)。空(kong)氣(qi)開(kai)關(guan)(guan)(guan)是(shi)根據斷(duan)(duan)(duan)路器滅(mie)弧(hu)的(de)(de)方式來劃分從而(er)得出的(de)(de)一(yi)個名(ming)稱,空(kong)氣(qi)開(kai)關(guan)(guan)(guan)滅(mie)弧(hu)的(de)(de)介質就是(shi)空(kong)氣(qi)。
繼電(dian)(dian)(dian)(dian)(dian)器(qi)(qi)是(shi)一種(zhong)電(dian)(dian)(dian)(dian)(dian)控(kong)制(zhi)器(qi)(qi)件(jian),是(shi)當(dang)輸(shu)入量(liang)(激勵(li)量(liang))的(de)(de)變化達到規(gui)定要(yao)求時,在電(dian)(dian)(dian)(dian)(dian)氣(qi)輸(shu)出電(dian)(dian)(dian)(dian)(dian)路中使被控(kong)量(liang)發生預(yu)定的(de)(de)階躍變化的(de)(de)一種(zhong)電(dian)(dian)(dian)(dian)(dian)器(qi)(qi)。從我(wo)國繼電(dian)(dian)(dian)(dian)(dian)器(qi)(qi)應用領域來看(kan),通信和工(gong)業(ye)控(kong)制(zhi)、家(jia)電(dian)(dian)(dian)(dian)(dian)和汽車(che)仍(reng)是(shi)繼電(dian)(dian)(dian)(dian)(dian)器(qi)(qi)最大市(shi)場。據從市(shi)場形勢來看(kan),繼電(dian)(dian)(dian)(dian)(dian)器(qi)(qi)是(shi)一個量(liang)大,服務面廣(guang),技術含(han)量(liang)不高,利潤微薄,市(shi)場潛力較(jiao)大的(de)(de)競爭(zheng)性行業(ye)。中國是(shi)全球繼電(dian)(dian)(dian)(dian)(dian)器(qi)(qi)的(de)(de)主要(yao)生產(chan)(chan)基地,產(chan)(chan)量(liang)約占全球總產(chan)(chan)出的(de)(de) 50%以上。
中國開(kai)(kai)關電源行業(ye)市場(chang)化程度(du)較高,呈現完全(quan)競爭的(de)市場(chang)格(ge)局(ju)。全(quan)國開(kai)(kai)關電源的(de)供應商主要分布(bu)在華北(bei)、華東和華南,分布(bu)在其他區域的(de)企(qi)業(ye)只有(you)26%。從(cong)產業(ye)集群來看,主要經(jing)形成(cheng)了珠三角(jiao)地(di)區、長三角(jiao)地(di)區,以(yi)及北(bei)京、天津、河北(bei)附近的(de)首都經(jing)濟圈(quan)地(di)區三大產業(ye)區,另外在西安、武漢也有(you)少量開(kai)(kai)關電源企(qi)業(ye)分布(bu)。
配(pei)電(dian)(dian)(dian)箱(xiang)(xiang)一(yi)般是(shi)家庭用的,而(er)配(pei)電(dian)(dian)(dian)柜則(ze)多用在集中(zhong)供電(dian)(dian)(dian)中(zhong),比如說(shuo)工業(ye)用電(dian)(dian)(dian)和(he)建筑用電(dian)(dian)(dian)等,配(pei)電(dian)(dian)(dian)箱(xiang)(xiang)和(he)配(pei)電(dian)(dian)(dian)柜都(dou)屬于(yu)(yu)成(cheng)套設備(bei),配(pei)電(dian)(dian)(dian)箱(xiang)(xiang)屬于(yu)(yu)低壓成(cheng)套設備(bei),配(pei)電(dian)(dian)(dian)柜有高壓有低壓。我(wo)國(guo)的配(pei)電(dian)(dian)(dian)箱(xiang)(xiang)行(xing)業(ye)已經逐漸的發展成(cheng)為世界先進的配(pei)電(dian)(dian)(dian)箱(xiang)(xiang)加工和(he)出口大國(guo),成(cheng)為了世界配(pei)電(dian)(dian)(dian)箱(xiang)(xiang)生產(chan)大國(guo)之一(yi),其中(zhong),我(wo)國(guo)的配(pei)電(dian)(dian)(dian)箱(xiang)(xiang)行(xing)業(ye)里有至少(shao)有70%為民營企業(ye),為中(zhong)國(guo)配(pei)電(dian)(dian)(dian)箱(xiang)(xiang)行(xing)業(ye)發展的主(zhu)力軍(jun)。
中(zhong)(zhong)國低(di)壓電(dian)器(qi)生產企業主(zhu)要集中(zhong)(zhong)在北京、天(tian)津、遼寧、上海、江蘇、浙江和廣東(dong)等地,企業數量2000家左右,其中(zhong)(zhong)外資(zi)企業約(yue)占10%,內(nei)(nei)資(zi)企業占90%左右,具有一定規模的(de)企業約(yue)110家。國內(nei)(nei)低(di)壓電(dian)器(qi)的(de)中(zhong)(zhong)高(gao)端市場(chang)原主(zhu)要由外資(zi)企業為(wei)主(zhu)導,隨(sui)著國內(nei)(nei)企業的(de)產品研(yan)發及(ji)技術不斷提升,部分優秀國內(nei)(nei)企業憑借其整體系統解決方案能力及(ji)長期積累的(de)品牌影(ying)響(xiang)力,也逐步(bu)參與到中(zhong)(zhong)高(gao)端市場(chang)競爭中(zhong)(zhong)。
電(dian)氣(qi)(qi)設(she)備(bei)是在電(dian)力(li)(li)系(xi)統(tong)中對發電(dian)機、變壓器(qi)、電(dian)力(li)(li)線(xian)路、斷路器(qi)等設(she)備(bei)的(de)統(tong)稱(cheng)。國(guo)(guo)內電(dian)氣(qi)(qi)設(she)備(bei)企業基(ji)本是以低端產(chan)品(pin)為主,高端產(chan)品(pin)基(ji)本為歐美(mei)國(guo)(guo)家所把持,在全球(qiu)銷售(shou)的(de)電(dian)氣(qi)(qi)設(she)備(bei)中,很多(duo)都(dou)是從(cong)國(guo)(guo)內生產(chan)并出口的(de),中國(guo)(guo)已經成為世界(jie)主要的(de)電(dian)氣(qi)(qi)設(she)備(bei)供應商。
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