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

* WDZN: This is a composite symbol representing low smoke, halogen-free, flame-retardant, and fire-resistant. WD indicates flexibility, ZN denotes fire resistance, W stands for halogen-free, and Z indicates flame-retardant.
YJVR22: This is a cross-linked poly-insulating poly sheath copper wire braided double-core flame-retardant cable.
3x240+1x95: Indicates 3 strands of 240 square millimeters and 1 strand 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 dense smoke, and does not emit black smoke when halogen impurities are burned. Halogen-free means that no halogen-containing substances are present during the material manufacturing process, and no harmful gases are produced after combustion.

Therefore, for cables requiring high comprehensive properties such as flame-retardant, low-smoke, and halogen-free, the WDZN-YJVR22 low-smoke halogen-free flame-retardant flame-retardant cable 3x240+1x95 is a suitable choice. The WDZN-YJVR22 low-smoke halogen-free flame-retardant flame-retardant cable 3x240+1x95 is a **flame-retardant cable** with characteristics of flame-retardant, low-smoke, low-halogen, non-toxic, and flame-retardant. 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 flame-retardant, which is the cable's characteristic code; YJVR22: cross-linked polyethylene insulated polyethylene sheath copper wire braid flame-retardant 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. **Flame-retardant cable - The WDZN-YJVR22 low-smoke halogen-free flame-retardant flame-retardant 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 flame-retardant, low-smoke, halogen-free rating, such as ZA-WDZN-YJVR22, which is a flame-retardant, low-smoke, halogen-free fire-resistant cable series. Since the flame-retardant rating is ZA, it can reach a smoke temperature of 750°C without emitting toxic gases upon combustion^[1]^

Fire-resistant cable functions: Under fire conditions, it can operate normally, providing power supply to fire fighting, communication, and lighting during fires, effectively dispersing people, and creating favorable conditions for extinguishing the fire. Low-smoke halogen-free flame-retardant cables produce less smoke when the cable catches fire, posing less harm to humans; they have excellent flame-retardant properties, can foam and expand upon contact with fire, providing good insulation and fire resistance, 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 resistance requirements, suitable for indoor installation and use.