萬邦高溫防火電纜簡介：

具有低電容、低電感集散型儀表信號電纜，具有優異的屏蔽性能和抗干擾性能，因此防爆安全性能明顯高于一般DCS系統電纜和計算機控制電纜。適用于石油、化工、電力、煤氣工程、礦山等存在爆炸危險的場合以及其它防爆安全要求較高的場合，傳輸自動控制信號。

使用特性：

1,長期使用工作溫度：200℃；短期使用1000℃,90分鐘
2,額定電壓Uo/U：450/750V,600/1000V
3,較低環境溫度：固定敷設－60℃,非固定敷設－20℃
4,較小(xiao)彎曲半徑(jing)：非鎧裝電(dian)(dian)纜不小(xiao)于電(dian)(dian)纜外(wai)徑(jing)的的10倍,鎧裝電(dian)(dian)纜不小(xiao)于電(dian)(dian)纜外(wai)徑(jing)的12倍。

萬邦高溫防火電纜注意事項：

敷設以(yi)(yi)(yi)(yi)后，會長時間(jian)(jian)通電(dian)(dian)(dian)(dian)(dian)，通電(dian)(dian)(dian)(dian)(dian)會產生熱能(neng)(neng)，導(dao)(dao)體允許工作溫度(du)為70℃，聚氯乙(yi)烯(xi)長期使用溫度(du)不宜超過65℃，如(ru)果在夏季(ji)，工作溫度(du)將會升(sheng)高，這些溫度(du)將會通過外護層散發(fa)出(chu)來(lai)，護套厚度(du)增(zeng)加，熱能(neng)(neng)難以(yi)(yi)(yi)(yi)散發(fa)，當鄰(lin)近存在高電(dian)(dian)(dian)(dian)(dian)壓、大電(dian)(dian)(dian)(dian)(dian)流干擾(rao)(rao)源(yuan)時，電(dian)(dian)(dian)(dian)(dian)氣干擾(rao)(rao)更嚴重，由于同一電(dian)(dian)(dian)(dian)(dian)纜(lan)(lan)(lan)的線芯之間(jian)(jian)的距離較小(xiao)，其(qi)干擾(rao)(rao)程度(du)也遠大于平行敷設的緊鄰(lin)電(dian)(dian)(dian)(dian)(dian)纜(lan)(lan)(lan)。由分相(xiang)操(cao)作的脈(mo)沖使其(qi)它相(xiang)的晶(jing)閘管觸發(fa)，誤導(dao)(dao)致三相(xiang)聯動，以(yi)(yi)(yi)(yi)后改用分別獨立(li)的電(dian)(dian)(dian)(dian)(dian)纜(lan)(lan)(lan)，就(jiu)未再發(fa)生誤動事故。又如(ru)某(mou)電(dian)(dian)(dian)(dian)(dian)廠的計(ji)算機監(jian)測系(xi)統，由于將模擬量低電(dian)(dian)(dian)(dian)(dian)平的信號(hao)線與(yu)變送(song)器的電(dian)(dian)(dian)(dian)(dian)源(yuan)線合用一根四芯電(dian)(dian)(dian)(dian)(dian)纜(lan)(lan)(lan)，曾引起(qi)在信號(hao)線產生70V的干擾(rao)(rao)電(dian)(dian)(dian)(dian)(dian)壓，這對以(yi)(yi)(yi)(yi)毫伏計(ji)的低電(dian)(dian)(dian)(dian)(dian)平信號(hao)回路，顯(xian)然會影響正(zheng)常(chang)工作。

包(bao)括(kuo)對線芯的(de)(de)總(zong)屏(ping)(ping)蔽(bi)、分屏(ping)(ping)蔽(bi)和雙層式(shi)總(zong)屏(ping)(ping)蔽(bi)等，耐高(gao)溫(wen)控(kong)制電(dian)(dian)(dian)纜(lan)金(jin)屬屏(ping)(ping)蔽(bi)型式(shi)的(de)(de)選擇，應(ying)按可(ke)(ke)能產生的(de)(de)電(dian)(dian)(dian)氣(qi)干(gan)(gan)擾影(ying)響(xiang)的(de)(de)強弱(ruo)，計入綜合(he)抑(yi)制干(gan)(gan)擾的(de)(de)措施(shi)，以(yi)滿足降低(di)干(gan)(gan)擾和過(guo)電(dian)(dian)(dian)壓的(de)(de)要(yao)求。對防干(gan)(gan)擾效(xiao)果的(de)(de)要(yao)求越(yue)(yue)高(gao)，則(ze)相應(ying)的(de)(de)投資也(ye)越(yue)(yue)大(da)，當采用鋼(gang)帶鎧裝、鋼(gang)絲(si)編織總(zong)屏(ping)(ping)蔽(bi)時，電(dian)(dian)(dian)纜(lan)的(de)(de)價格約(yue)增(zeng)加10%-20%。當位于存在(zai)干(gan)(gan)擾影(ying)響(xiang)的(de)(de)環境，又(you)不(bu)具(ju)備有效(xiao)的(de)(de)抗干(gan)(gan)擾措施(shi)時，宜選用帶金(jin)屬屏(ping)(ping)蔽(bi)的(de)(de)控(kong)制電(dian)(dian)(dian)纜(lan)，以(yi)防止(zhi)電(dian)(dian)(dian)氣(qi)干(gan)(gan)擾會(hui)(hui)對低(di)電(dian)(dian)(dian)平信號回路(lu)產生誤動作(zuo)或使絕(jue)緣擊(ji)穿等影(ying)響(xiang)。弱(ruo)電(dian)(dian)(dian)回路(lu)的(de)(de)控(kong)制電(dian)(dian)(dian)纜(lan)如果能與電(dian)(dian)(dian)力電(dian)(dian)(dian)纜(lan)拉(la)開足夠的(de)(de)距離，或敷設在(zai)鋼(gang)管中時，可(ke)(ke)能會(hui)(hui)使外部的(de)(de)電(dian)(dian)(dian)氣(qi)干(gan)(gan)擾降低(di)到允許的(de)(de)限度。