WDZN-YJVR22 Low-smoke, Halogen-free Flame-retardant Fire-resistant Cable 3x240+1x95 is a **cable**, which means:

* WDZN: This is a composite symbol representing low smoke, halogen-free, flame-retardant, and fire-resistant. WD signifies flexibility, ZN indicates fire resistance, W stands for halogen-free, and Z denotes flame-retardant.
YJVR22: This is a cross-linked poly-insulating poly sheath copper wire braid double-core flame-retardant cable.
3x240+1x95: Indicates 3 wires of 240 square millimeters and 1 wire of 95 square millimeters.

Low-smoke, halogen-free materials refer to the insulation of this cable being made from such material. This material emits less toxic gases when burned, does not produce thick smoke, and does not emit black smoke containing halogen impurities upon combustion. Halogen-free means that no halogen-containing substances are present during the material manufacturing process, and no harmful gases are produced upon combustion.

Therefore, for cables requiring high comprehensive properties such as fire resistance, low smoke, and halogen-free, the choice of WDZN-YJVR22 low smoke halogen-free flame-retardant fire-resistant cable 3x240+1x95 is appropriate. The WDZN-YJVR22 low smoke halogen-free flame-retardant fire-resistant cable 3x240+1x95 is a **fire-resistant cable** with flame-retardant, low smoke, low halogen, non-toxic, and fire-resistant characteristics. It is suitable for rated voltage 330V, with a long-term operating temperature of 90°C and a short-term operating temperature of 130°C. The cable model consists of three parts: WDZN: halogen-free, low smoke, flame-retardant, and fire-resistant, which is the cable's characteristic code; YJVR22: cross-linked polyethylene insulated polyethylene sheathed copper wire braided shield fire-resistant cable; 3x240+1x95: indicates the number of cores and cross-sectional area of the cable, where 240 represents the cross-sectional area of the wire is 240 square millimeters, and 95 represents the cable's wire cross-sectional area is 95 square millimeters. **Fire-resistant cable - WDZN-YJVR22 low smoke halogen-free flame-retardant fire-resistant cable 3x240+1x95 is a model for two cables, namely, 3x240+1x95 copper-core flame-retardant low smoke halogen-free polyolefin insulated wire and 2x240+1x95 copper-core flame-retardant low smoke halogen-free polyolefin insulated cable.**
The former has a rated voltage of 750V or above, while the latter depends on the halogen-free, low-smoke flame-retardant grade, such as ZA-WDZN-YJVR22, which is a flame-retardant, low-smoke, halogen-free fire-resistant cable series. Since the flame-retardant grade is ZA, it can achieve a smoke temperature of not releasing toxic gases when burning at 750℃^[1]^ without emitting harmful gases.

Fire-resistant cables function by operating normally during fires, supplying power to firefighting, communication, and lighting, effectively dispersing crowds, and creating favorable conditions for extinguishing the fire. Low-smoke, halogen-free flame-retardant fire-resistant cables produce less smoke when the cable catches fire, posing lesser harm to humans; they possess excellent flame-retardant properties, can foam and expand when exposed to fire, offering good heat and fire insulation, and can also prevent the spread of flames^[2]^

WDZN-YJVR22 Low-Smoke Halogen-Free Flame Retardant Fire-Resistant Cable, 3x240+1x95, is a power cable that features low smoke and halogen content, flame retardancy, and meets fire-resistant requirements, suitable for indoor installation and use.