Halogen-free, low smoke and flame-retardant cables

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.

Halogen-free, low smoke and flame retardant type

According to the GB/T19666 standard, the models of halogen-free, low smoke and flame-retardant cables are WDZA-YJY, WDZB-YJY, WDZC-YJY and WDZD-YJY. The model of the halogen-free, low smoke, flame-retardant and fire-resistant cable is WDZN-YJY.

The rated voltage U0/U is 0.6/1kV.

The operating temperature of the cable conductor must not exceed 90℃.

When a short circuit occurs (with the longest duration not exceeding 5 seconds), the temperature of the cable conductor shall not exceed 250℃.

4. The ambient temperature during cable laying should not be lower than 0℃, and the minimum bending radius is as follows:

Single-core cables: When installing unarmored cables, the bending radius shall not be less than 20 times the outer diameter of the cable; when installing armored cables, the bending radius shall not be less than 15 times the outer diameter of the cable.

Multi-core cables: When installing unarmored cables, the bending radius shall not be less than 15 times the outer diameter of the cable; when installing armored cables, the bending radius shall not be less than 12 times the outer diameter of the cable.