天康伴熱電纜選型

1、工作原理： 電(dian)(dian)源母(mu)線為(wei)二根平行絕緣銅線，在(zai)絕緣層中間(jian)纏繞電(dian)(dian)熱(re)絲恒功率電(dian)(dian)熱(re)帶(dai)亦稱并(bing)聯式電(dian)(dian)熱(re)帶(dai)

2、產品規格及主要技術指(zhi)標：

常(chang)態絕緣電(dian)阻(zu)：≥50mΩhm

介電強度：-2500V 50HZ/min

絕緣層材料：F46

電熱帶zui高耐溫：205℃

防爆標志：eдT3

防(fang)爆(bao)合格證(zheng)證(zheng)號：289202

供貨長(chang)(chang)度：zui長(chang)(chang)200m,電短20m

天康伴熱電纜選(xuan)型(xing)

其工作原理及(ji)產品結構(gou)與RDP2-J3型恒功率電(dian)熱(re)帶相同，所(suo)不(bu)同是其絕(jue)緣材料采(cai)用了(le)耐(nai)高(gao)防(fang)水玻璃纖維和耐(nai)高(gao)溫(wen)于(yu)F46的(de)PFA氟塑料，因此能用于(yu)溫(wen)度達(da)260℃的(de)場所(suo)進行熱(re)保溫(wen)，以維持(chi)(chi)一定的(de)伸質濁度，它尤其適合瀝青、重粘油管線伴熱(re)，其流體維持(chi)(chi)溫(wen)度可達(da)180℃-250℃，該(gai)產品可用于(yu)非爆(bao)場合和工廠一區(qu)(qu)，二(er)區(qu)(qu)爆(bao)炸(zha)氣體T3組場所(suo)。

1、型號含義：每米功率為(wei)40W加強型單相(xiang)高溫電(dian)熱帶(dai)

2、產品規格及主要技(ji)術指標：電熱帶zui高耐溫260℃

1.工作原理：

三(san)根平行絕緣銅絞線為(wei)電(dian)(dian)源母線，在內護套絕緣層外纏繞電(dian)(dian)熱(re)絲，并(bing)將該電(dian)(dian)熱(re)絲每隔一定距離（即“發熱(re)節(jie)長”）分別依次與電(dian)(dian)源母線AB-BC-CA-AB......反復循環連(lian)接，在每三(san)相間形(xing)甩連(lian)續(xu)(xu)并(bing)聯電(dian)(dian)阻(zu)。當(dang)線母通以(yi)三(san)相電(dian)(dian)后，各(ge)并(bing)聯電(dian)(dian)阻(zu)同(tong)時發熱(re)，因而(er)形(xing)成(cheng)一條(tiao)連(lian)續(xu)(xu)三(san)相電(dian)(dian)的(de)加(jia)熱(re)帶。

2、產品規格及主要技術指標：

常態絕緣(yuan)電阻≥50mΩ/每百米(mi)

絕緣層材料：F46電(dian)熱帶zui高耐溫：250℃

供(gong)貨長度：zui長：500Mzui短：50M

介質強(qiang)度：-2500V 50HZ/min

防爆標志：e ⅡT3 防爆合格證號：289202

DXW/PZ/J 型自限式電熱(re)帶

自限式電熱帶

型號含義：

例： DXW-PZ/J表示(shi)：絕緣材(cai)料為(wei)PTC復(fu)合性，額定工(gong)作電(dian)壓為(wei)220V、20℃時每(mei)米輸出(chu)功率20W的自限工(gong)電(dian)熱帶。

工作原理(li)：兩根銅絞線(xian)為電(dian)(dian)(dian)(dian)(dian)(dian)源(yuan)母線(xian)，在(zai)母線(xian)周圍(wei)擠塑一層有正溫系數特(te)(te)性的自(zi)限(xian)發(fa)熱芯(xin)料(liao)(liao)，當接(jie)通(tong)(tong)(tong)(tong)電(dian)(dian)(dian)(dian)(dian)(dian)源(yuan)后，電(dian)(dian)(dian)(dian)(dian)(dian)源(yuan)橫(heng)向通(tong)(tong)(tong)(tong)過芯(xin)料(liao)(liao)，形(xing)成了(le)一個連續(xu)的并聯加(jia)熱體(ti)。本電(dian)(dian)(dian)(dian)(dian)(dian)熱帶(dai)發(fa)熱芯(xin)料(liao)(liao)采(cai)用經(jing)特(te)(te)種(zhong)工藝處(chu)理(li)的溫度(du)記憶導(dao)(dao)電(dian)(dian)(dian)(dian)(dian)(dian)分(fen)(fen)子(zi)(zi)。當電(dian)(dian)(dian)(dian)(dian)(dian)流(liu)通(tong)(tong)(tong)(tong)過網絡導(dao)(dao)電(dian)(dian)(dian)(dian)(dian)(dian)分(fen)(fen)子(zi)(zi)時，產(chan)生(sheng)熱量。在(zai)冷態時，電(dian)(dian)(dian)(dian)(dian)(dian)流(liu)易(yi)于通(tong)(tong)(tong)(tong)過，產(chan)生(sheng)大(da)(da)量熱能。隨著溫度(du)升(sheng)高，基體(ti)膨(peng)脹，導(dao)(dao)電(dian)(dian)(dian)(dian)(dian)(dian)分(fen)(fen)子(zi)(zi)減(jian)低了(le)網絡密度(du)，切斷了(le)大(da)(da)部分(fen)(fen)通(tong)(tong)(tong)(tong)路，電(dian)(dian)(dian)(dian)(dian)(dian)流(liu)減(jian)少(shao)，發(fa)熱量隨之(zhi)減(jian)少(shao)，由此，達(da)到自(zi)動(dong)控制溫度(du)目的，使加(jia)熱基本超于熱平衡。當溫度(du)下降，溫度(du)記憶導(dao)(dao)電(dian)(dian)(dian)(dian)(dian)(dian)分(fen)(fen)子(zi)(zi)再次收縮，結果(guo)，原先切斷的電(dian)(dian)(dian)(dian)(dian)(dian)路有恢復接(jie)通(tong)(tong)(tong)(tong)，電(dian)(dian)(dian)(dian)(dian)(dian)流(liu)再次增(zeng)大(da)(da)，熱量輸出增(zeng)加(jia)。這(zhe)種(zhong)特(te)(te)性稱之(zhi)謂(wei)：“溫度(du)自(zi)限(xian)式(shi)特(te)(te)性”，“自(zi)限(xian)式(shi)電(dian)(dian)(dian)(dian)(dian)(dian)熱帶(dai)”名(ming)稱由此而(er)產(chan)生(sheng)。

產品(pin)規(gui)格及主要技(ji)術指標

1、產品規格：DXW-PZ/J自限式電熱帶

2、工(gong)作電壓：~220V

3、抗電(dian)強(qiang)度：2.5kv/m（20℃）

4、電(dian)熱帶zui高耐溫：150℃

5、額定發熱量：20W/m（20℃）

6、防爆(bao)等級(ji)：“eⅡT3”防爆(bao)合格(ge)證證號：289202

DXW型(xing)自(zi)限式電(dian)(dian)(dian)熱(re)(re)(re)(re)(re)帶(dai)(dai)(dai)單位長(chang)度(du)(du)上功(gong)率(lv)相等，它(ta)(ta)的(de)(de)(de)功(gong)率(lv)不隨總功(gong)率(lv)愈大。在(zai)(zai)現場它(ta)(ta)任意切割(ge)。該產(chan)品的(de)(de)(de)“自(zi)限性(xing)能在(zai)(zai)”電(dian)(dian)(dian)熱(re)(re)(re)(re)(re)帶(dai)(dai)(dai)的(de)(de)(de)整根長(chang)度(du)(du)中處出存在(zai)(zai)，因(yin)而能有效(xiao)在(zai)(zai)保(bao)證管道(dao)的(de)(de)(de)熱(re)(re)(re)(re)(re)穩定性(xing)。同時，自(zi)限式點熱(re)(re)(re)(re)(re)帶(dai)(dai)(dai)即(ji)使是(shi)互相交(jiao)駐，也不會(hui)產(chan)生(sheng)過熱(re)(re)(re)(re)(re)燒壞(huai)點熱(re)(re)(re)(re)(re)帶(dai)(dai)(dai)。它(ta)(ta)可(ke)(ke)用(yong)于(yu)(yu)(yu)30℃以下(xia)會(hui)質管道(dao)伴熱(re)(re)(re)(re)(re)保(bao)溫。自(zi)限式電(dian)(dian)(dian)熱(re)(re)(re)(re)(re)帶(dai)(dai)(dai)和PTC材(cai)料的(de)(de)(de)啟(qi)(qi)動電(dian)(dian)(dian)流性(xing)能有些相似(si)：在(zai)(zai)接(jie)通電(dian)(dian)(dian)源的(de)(de)(de)瞬間(jian)會(hui)產(chan)生(sheng)較大啟(qi)(qi)動電(dian)(dian)(dian)流，該電(dian)(dian)(dian)流隨著通電(dian)(dian)(dian)時間(jian)的(de)(de)(de)延長(chang)逐漸變(bian)小，一(yi)(yi)般(ban)持(chi)續數秒后(hou)可(ke)(ke)降到額(e)定值(zhi)。由于(yu)(yu)(yu)電(dian)(dian)(dian)熱(re)(re)(re)(re)(re)帶(dai)(dai)(dai)一(yi)(yi)般(ban)都是(shi)直接(jie)啟(qi)(qi)動，所以DXW-PZ/J型(xing)自(zi)限式電(dian)(dian)(dian)熱(re)(re)(re)(re)(re)帶(dai)(dai)(dai)zui大使用(yong)長(chang)度(du)(du)100-200m。安裝電(dian)(dian)(dian)帶(dai)(dai)(dai)應與控制電(dian)(dian)(dian)器配套使用(yong)，控制電(dian)(dian)(dian)器一(yi)(yi)般(ban)有過載、短路、接(jie)地、漏電(dian)(dian)(dian)保(bao)護和溫度(du)(du)保(bao)護。自(zi)限式電(dian)(dian)(dian)熱(re)(re)(re)(re)(re)帶(dai)(dai)(dai)能用(yong)于(yu)(yu)(yu)解決介溫度(du)(du)低于(yu)(yu)(yu)30℃的(de)(de)(de)管道(dao)、閥(fa)門、泵體的(de)(de)(de)防冷(leng)凍和保(bao)溫，對(dui)于(yu)(yu)(yu)維持(chi)儀(yi)表(biao)管線(xian)的(de)(de)(de)工(gong)藝溫度(du)(du)尤為(wei)適用(yong)。

產品適應場合

1、儀表管線(xian)伴熱保溫

2、防(fang)止表(biao)面(mian)積雪(xue)、結冷。

3、嚴(yan)格(ge)控(kong)制作業溫度(du)的液體管(guan)線伴(ban)熱。

4、塑料管伴熱。

5、塑料管伴(ban)熱，液化石油(you)氣或氨(an)氣儲槽底部防凍保溫(wen)

6、一般管線防凍。

7、井口(kou)采(cai)油管伴熱（取代水(shui)套爐），注水(shui)井防(fang)凍。

第十篇 射頻電纜

一、產品特點及用途

適(shi)(shi)用于無線電通(tong)訊廣播設備和(he)有關無線電電子(zi)設備中傳輸射頻(pin)（高(gao)頻(pin)）信(xin)號，SFF耐高(gao)溫同軸電纜適(shi)(shi)用于高(gao)溫、腐蝕環(huan)境(jing)下(xia)射頻(pin)電纜