耐火电缆，防火电缆

产品标准

耐火电缆 按GB12706《额定电压35kV及以下铜芯、铝芯塑料绝缘电力电缆》和GB12666《电线电缆燃烧实验办法》标准出产，同时还可根据用户需要按国际电工委员会推荐的IEC标准、英国BS标准、德国DIN标准、美国ICEA标准及日本JIS标准出产。

The product is manufactured according to the standard of GB12706 and GB12666 or IEC,BS,DIN,ICEA,and JIS upon request.

适用范围

耐火电缆适用于工频额定电压0.6/1kV及以下配电线路或工业装置中有耐火要求的固定敷设场所使用。

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

·工频额定电压U0/U:0.6/1kV。

Rated power-frequency voltage U0/U:0.6/1kV.

·电缆导体的高允许长时间工作温度（PVC/XLPE）:70℃/90℃.

e continuous operating temperature of conductor （PVC/XLPE）: 70℃/90℃

·短路时（长持续时间不超过5s）电缆导体高允许温度

PVC:导体截面≤300mm2-160℃

导体截面＞300mm2-140℃

XLPE:250℃

-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℃

·电缆敷设时环境温度应不低于0℃

The ambient temperature under installation should not below 0℃

·电缆的曲折半径：多芯电缆不小于电缆外径15倍，单芯电缆不小于电缆外径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.

电缆的型号Type of cable