產(chǎn)品標準 耐火電纜 按GB12706《額定電壓35kV及以下銅芯、鋁芯塑料絕緣電力電纜》和GB12666《電線電纜燃燒實驗方法》標準生產(chǎn)，同時還可根據(jù)用戶需要按電工委員會推薦的IEC標準、英國BS標準、德國DIN標準、美國ICEA標準及日本JIS標準生產(chǎn)。 The product is manufactured according to the standard of GB12706 and GB12666 or IEC,BS,DIN,ICEA,and JIS upon request.
適用范圍 耐火電纜適用于工頻額定電壓0.6/1kV及以下配電線路或工業(yè)裝置中有耐火要求的固定敷設(shè)場所使用。 The product is suitable for use in power distribution lines or fixed installations with rated power-frequency voltage up to and including 0.6/1kV.
使用特性 ·工頻額定電壓U0/U:0.6/1kV。 Rated power-frequency voltage U0/U:0.6/1kV. ·電纜導(dǎo)體的Z高允許長期工作溫度（PVC/XLPE）:70℃/90℃. Max.permissible continuous operating temperature of conductor （PVC/XLPE）: 70℃/90℃ ·短路時（Z長持續(xù)時間不超過5s）電纜導(dǎo)體Z高允許溫度 PVC:導(dǎo)體截面≤300mm2-160℃ 導(dǎo)體截面＞300mm2-140℃ XLPE:250℃ Max.short-circuit temperature of the conductor shall not exceed（5s maxiumduration）: PVC:cross-section of conductor≤300mm2-160℃ cross-section of conductor＞300mm2-140℃ XLPE:250℃ ·電纜敷設(shè)時環(huán)境溫度應(yīng)不低于0℃ The ambient temperature under installation should not below 0℃ ·電纜的彎曲半徑：多芯電纜不小于電纜外徑15倍，單芯電纜不小于電纜外徑20倍。 The bending radius of a single-core cable should not less than 20 times of the cable diameter. The bending radius of multicore-cable should not less than 15 times of the cable diameter.
