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    礦用控制電纜本身的散熱性能是什么

    點(dian)擊數:8172015-07-24 00:00:00 來源: 礦用通信電纜_控制電纜_計算機電纜_礦用網線_信號光纜生產廠家-信橋線纜有限公司

    電(dian)纜(lan)本身的散熱性能(neng)。
      電纜(lan)裝置情況及其(qi)周圍的散熱條件(jian)。
      電纜(lan)長(chang)期允(yun)(yun)許(xu)載流(liu)量是指當電纜(lan)中通過電流(liu)時,在達到熱(re)穩定后,電纜(lan)導體的溫度恰好達到長(chang)期允(yun)(yun)許(xu)工作溫度時的電流(liu)數值。
      礦用(yong)控制電纜(lan)的(de)長期允許工作溫度(du)
      電(dian)纜(lan)(lan)(lan)在運行(xing)(xing)中(zhong),由于(yu)導體電(dian)阻、絕(jue)(jue)緣(yuan)層(ceng)、保護層(ceng)和鎧裝層(ceng)的(de)能量損耗,都將使電(dian)纜(lan)(lan)(lan)發熱,溫(wen)度升(sheng)高。當(dang)電(dian)纜(lan)(lan)(lan)的(de)運行(xing)(xing)溫(wen)度超過(guo)某一定值(zhi)(zhi)時,將導致礦用橡套(tao)電(dian)纜(lan)(lan)(lan)的(de)絕(jue)(jue)緣(yuan)水平下降(jiang),甚至擊(ji)穿。所以,礦用電(dian)纜(lan)(lan)(lan)的(de)運行(xing)(xing)溫(wen)度限定在這一特定值(zhi)(zhi)以下,這個特定值(zhi)(zhi)稱為(wei)電(dian)纜(lan)(lan)(lan)的(de)長期允許工作(zuo)溫(wen)度。不同電(dian)壓等級和絕(jue)(jue)緣(yuan)型式的(de)電(dian)纜(lan)(lan)(lan),其最(zui)高允許工作(zuo)溫(wen)度值(zhi)(zhi)不同。
      礦用(yong)通(tong)信電(dian)(dian)纜(lan)絕(jue)緣(yuan)層(ceng)受(shou)熱膨脹,造成保護層(ceng)過度伸展,使電(dian)(dian)纜(lan)內部產生(sheng)氣隙,這些氣隙在電(dian)(dian)場的(de)(de)作(zuo)用(yong)下發(fa)生(sheng)游(you)(you)離,最后導(dao)致絕(jue)緣(yuan)的(de)(de)破壞。從這個意義上講,電(dian)(dian)纜(lan)的(de)(de)電(dian)(dian)壓(ya)等級越(yue)(yue)高(gao)(gao),氣隙的(de)(de)游(you)(you)離作(zuo)用(yong)越(yue)(yue)顯(xian)著(zhu),其最高(gao)(gao)允許工作(zuo)溫度就越(yue)(yue)低;充油電(dian)(dian)纜(lan)因不產生(sheng)氣隙。
      電(dian)力(li)電(dian)纜的(de)結構(gou)、材(cai)料及性能
      作溫(wen)度(du)(du)高(gao)(gao);聚(ju)氯(lv)乙烯結構中(zhong)存在(zai)極性基團,在(zai)溫(wen)度(du)(du)升(sheng)高(gao)(gao)時,介(jie)質因電導升(sheng)高(gao)(gao)較快,絕緣強度(du)(du)下(xia)降較大,所以其最高(gao)(gao)允許(xu)工(gong)作溫(wen)度(du)(du)較低。
      電纜的正常(chang)允許載流量
      敷(fu)設(she)在空氣(qi)中、土壤中的油浸(jin)紙絕緣(yuan)銅、鋁芯(xin)電纜(lan)(lan),以及聚(ju)(ju)氯乙烯、交聯聚(ju)(ju)乙烯銅、鋁芯(xin)電纜(lan)(lan),橡皮絕緣(yuan)鋁芯(xin)電纜(lan)(lan)的正常允許載流量。
      電力電纜的(de)選擇
      電(dian)(dian)力電(dian)(dian)纜(lan)的選(xuan)擇包括:正確(que)選(xuan)擇電(dian)(dian)纜(lan)的型號、電(dian)(dian)壓等級和線(xian)芯截面等。這對電(dian)(dian)纜(lan)投(tou)入使用后能否確(que)保(bao)安全(quan)運行(xing)十(shi)分重(zhong)要。

    信(xin)(xin)(xin)橋線纜(lan)(lan)(lan)(lan)(lan)(lan)有限公司(si)是河北省電(dian)(dian)(dian)(dian)信(xin)(xin)(xin)局定點(dian)生產廠(chang)家(jia),主要產品有通(tong)信(xin)(xin)(xin)電(dian)(dian)(dian)(dian)纜(lan)(lan)(lan)(lan)(lan)(lan)、礦(kuang)(kuang)用(yong)(yong)(yong)(yong)通(tong)信(xin)(xin)(xin)電(dian)(dian)(dian)(dian)纜(lan)(lan)(lan)(lan)(lan)(lan)、礦(kuang)(kuang)用(yong)(yong)(yong)(yong)通(tong)信(xin)(xin)(xin)光(guang)(guang)纜(lan)(lan)(lan)(lan)(lan)(lan)、礦(kuang)(kuang)用(yong)(yong)(yong)(yong)通(tong)訊電(dian)(dian)(dian)(dian)纜(lan)(lan)(lan)(lan)(lan)(lan)、信(xin)(xin)(xin)號電(dian)(dian)(dian)(dian)纜(lan)(lan)(lan)(lan)(lan)(lan)、礦(kuang)(kuang)用(yong)(yong)(yong)(yong)網線、MGTSV光(guang)(guang)纜(lan)(lan)(lan)(lan)(lan)(lan)、GYTA53光(guang)(guang)纜(lan)(lan)(lan)(lan)(lan)(lan)、MKVV32控(kong)(kong)制(zhi)電(dian)(dian)(dian)(dian)纜(lan)(lan)(lan)(lan)(lan)(lan)、MKVV礦(kuang)(kuang)用(yong)(yong)(yong)(yong)控(kong)(kong)制(zhi)電(dian)(dian)(dian)(dian)纜(lan)(lan)(lan)(lan)(lan)(lan) 、MKVVP22礦(kuang)(kuang)用(yong)(yong)(yong)(yong)控(kong)(kong)制(zhi)電(dian)(dian)(dian)(dian)纜(lan)(lan)(lan)(lan)(lan)(lan)、MHYBV通(tong)信(xin)(xin)(xin)電(dian)(dian)(dian)(dian)纜(lan)(lan)(lan)(lan)(lan)(lan) 、MHYVRP通(tong)信(xin)(xin)(xin)電(dian)(dian)(dian)(dian)纜(lan)(lan)(lan)(lan)(lan)(lan)、MHYSV礦(kuang)(kuang)用(yong)(yong)(yong)(yong)電(dian)(dian)(dian)(dian)纜(lan)(lan)(lan)(lan)(lan)(lan) 、MHYS32礦(kuang)(kuang)用(yong)(yong)(yong)(yong)電(dian)(dian)(dian)(dian)纜(lan)(lan)(lan)(lan)(lan)(lan)、MHYA32礦(kuang)(kuang)用(yong)(yong)(yong)(yong)電(dian)(dian)(dian)(dian)纜(lan)(lan)(lan)(lan)(lan)(lan)、MHYV礦(kuang)(kuang)用(yong)(yong)(yong)(yong)通(tong)信(xin)(xin)(xin)電(dian)(dian)(dian)(dian)纜(lan)(lan)(lan)(lan)(lan)(lan) 、MHYAV礦(kuang)(kuang)用(yong)(yong)(yong)(yong)通(tong)信(xin)(xin)(xin)電(dian)(dian)(dian)(dian)纜(lan)(lan)(lan)(lan)(lan)(lan)、MHYVP礦(kuang)(kuang)用(yong)(yong)(yong)(yong)通(tong)信(xin)(xin)(xin)電(dian)(dian)(dian)(dian)纜(lan)(lan)(lan)(lan)(lan)(lan)、MDJYPV礦(kuang)(kuang)用(yong)(yong)(yong)(yong)計算機電(dian)(dian)(dian)(dian)纜(lan)(lan)(lan)(lan)(lan)(lan)。我(wo)公司(si)是一家(jia)礦(kuang)(kuang)用(yong)(yong)(yong)(yong)光(guang)(guang)纜(lan)(lan)(lan)(lan)(lan)(lan)生產廠(chang)家(jia)、通(tong)信(xin)(xin)(xin)光(guang)(guang)纜(lan)(lan)(lan)(lan)(lan)(lan)生產廠(chang)家(jia)、計算機電(dian)(dian)(dian)(dian)纜(lan)(lan)(lan)(lan)(lan)(lan)廠(chang)家(jia)、控(kong)(kong)制(zhi)電(dian)(dian)(dian)(dian)纜(lan)(lan)(lan)(lan)(lan)(lan)廠(chang)家(jia)。業(ye)務聯系電(dian)(dian)(dian)(dian)話:13833935867





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