Fire-resistant Cable - WDZB-BYJR is a low-smoke, halogen-free flame-retardant cable, with "WDZB-BYJR" indicating the cable's specification model as **Low-smoke, Halogen-free Flame-retardant B-Class Copper Core Power Cable**. In contrast, the cable with the specification model WDZBN-BYJR, where "WDZBN" signifies **Halogen-free Low-smoke Flame-retardant B-Class Flame-resistant Copper Core Power Cable**. This cable is primarily used in critical applications such as fire protection systems, high-rise buildings, and large workshops. The Fire-resistant Cable - WDZB-BYJR is a low-smoke, halogen-free flame-retardant flame-resistant cable, with "WDZB" denoting low-smoke, halogen-free flame-retardant BV wire, and "BYJR" indicating flame-resistant cables for indoor AC work.

This cable is typically used in power systems and control systems with rated voltages of 300/500V and flame-retardant grade B. It does not release halogen acids when burning, has no corrosive effects on equipment, and can maintain electrical conductivity for a certain period during a fire, significantly enhancing emergency power supply during fires, providing electrical support for evacuation or other equipment.

The WDZBN-BYJR cable is a fire-resistant cable with special properties, suitable for locations requiring fire ratings, such as industrial plants, public buildings, and residential areas. The WDZB-BYJR cable is a low-smoke, halogen-free flame-retardant fire-resistant cable, where "WDZB-BYJR" stands for: **Halogen-free, low-smoke flame-retardant B-grade fire-resistant cable with copper-core irradiated cross-linked polyolefin insulated fabric flame-retardant cable**.

The WDZB-BYJR cable wire complies with national standards, offering safety and flame-retardant features. It effectively prevents the spread of flames and maintains good insulation performance under high temperatures, ensuring certain electrical conductivity. The low-smoke, halogen-free wire has passed a series of tests to meet the low-smoke, halogen-free requirements. During combustion, it produces minimal smoke and has a low corrosive odor, preventing harm to humans.

Therefore, the WDZB-BYJR wire is a safe and reliable cable that performs effectively under various conditions. **WDZB-BYJR Fire-Resistant Cable is a low-smoke, halogen-free flame-retardant B-grade cable for horizontal installation**. The meanings of each letter in WDZB-BYJR are as follows: WD stands for halogen-free and low-smoke, Z represents flame-retardant, B indicates B-grade, N signifies fire-resistance, and BYJR denotes cable (for substation use).

Fire-resistant cables emit less smoke and dust during combustion and release them at a slower pace. They have a high oxygen index and are self-extinguishing, which means they can contain the flame's spread to a certain extent even when burning in a fire, minimizing the expansion of the fire.