Fire-resistant insulated power cable

Cross-linked polyethylene insulated power cables feature high mechanical strength, good resistance to environmental stress, excellent electrical performance and chemical corrosion resistance. They are lightweight, have a simple structure and are easy to use. This product is applicable to transmission and distribution lines with an AC rated voltage of U0/U of 0.6/1kV and below.

The main feature of flame-retardant cables is that they are not prone to catching fire or, if they do, the ignition is limited to a certain range. They are suitable for places with a high density of cable laying, such as power stations, subways, tunnels, high-rise buildings, large industrial and mining enterprises, oil fields, and coal mines.

The main feature of fire-resistant cables is that they can not only transmit electricity under normal working conditions but also maintain normal operation for a certain period of time when on fire. They are suitable for places related to fire safety and fire rescue, such as nuclear power plants, subways, tunnels, and high-rise buildings.

Halogen-free low smoke flame retardant cables are characterized by not only flame retardant performance but also low smoke emission and harmlessness (with relatively low toxicity and corrosiveness). They are suitable for places with special requirements for cable flame retardancy, smoke density, toxicity index, etc., such as subways, hospitals, schools, tunnels, nuclear power plants, etc.

阻燃型：

根据GB/T19666标准规定，阻燃型电缆在普通型号前加ZA、ZB、ZC、ZD。

耐火型：

根据GB/T19666标准规定，耐火型电缆在普通型号前加N。

无卤低烟阻燃型：

根据GB/T19666标准规定，无卤低烟阻燃型电缆型号为WDZA-YJY、WDZB-YJY、WDZC-YJY、WDZD-YJY。无卤低烟阻燃耐火型电缆型号为WDZN-YJY。

1、额定电压U0/U为0.6/1kV。

2、电缆导体的工作温度怒不超过90℃。

3、短路时（最长持续时间不超过5s）电缆导体的温度不超过250℃。

4、电缆敷设时的环境温度应不低于0℃，其最小弯曲半径如下：

单芯电缆：无铠装电缆安装时弯曲半径不小于电缆外径的20倍，有铠装电缆安装时弯曲半径不小于电缆外径的15倍。

多芯电缆：无铠装电缆安装时弯曲半径不小于电缆外径的15倍，有铠装电缆安装时弯曲半径不小于电缆外径的12倍。