I have learned the following information about refractory cables:
Fire-resistant Cable - WDZA-KYJYP2/23-750V-2*2.5mm Low Smoke Halogen-Free Flame Retardant Cable
* **Model**: WDZA-KYJYP2/23
* **Voltage**: 750V
Conductor: 2*2.5mm
Material: Low Smoke Zero Halogen Flame Retardant Cable Material
* **Type**: Fire-Resistant Cable
Fire-resistant cables can maintain operation for a certain duration during flame combustion, up to a maximum of three hours. They are commonly used in significant locations such as large public buildings, power plants, and petrochemical factories. Such cables are often employed in fire alarm systems, fire equipment wiring, and electrical circuits within critical buildings.
Fire-resistant Cable - WDZA-KYJYP2/23-750V-2*2.5mm Low-smoke Halogen-free Flame-retardant Cable, suitable for fixed installations with special flame-retardant, halogen-free, low-smoke, and low-toxic safety requirements in high-rise buildings, hospitals, theaters, power stations, subways, tunnels, and petrochemical industries.
Low-smoke halogen-free cables for power cables used in transmission and distribution systems rated for 0.6/1KV voltage.
Low-smoke halogen-free cables are used for control, monitoring circuits, and protection lines with rated voltages of 450/750V and below.
Low-smoke, halogen-free cables and fire-resistant cables, in addition to transmitting electricity under normal operating conditions, can also supply power for a period during a fire, facilitating emergency firefighting and evacuation of personnel, thereby reducing fire-related losses.
Cables, during normal operation, cross-linked polyethylene insulated cables have a long-term allowable working temperature not exceeding 90°C, with the conductor temperature not exceeding 250°C during a short circuit (for a duration of 5 seconds). PVC insulated cables have a long-term working temperature not exceeding 70°C, with the conductor temperature not exceeding 160°C during a short circuit (within 5 seconds). Cables must be pre-heated when laid at temperatures below 0°C.
WDZ-KYJYP2-23 Low-smoke Halogen-free Cable
| Model | Name |
| WDZA-KYJY | Copper-core cross-linked polyolefin insulated halogen-free low-smoke A (B, C) class flame-retardant control cables |
| WDZA-KYJYP | Copper-core cross-linked polyethylene insulated copper wire braided屏蔽polyolefin sheathed halogen-free low-smoke A (B, C) class flame-retardant control cable |
| WDZA-KYJYP2 | Copper-core cross-linked poly-insulated copper tape shielded polyolefin jacket halogen-free low-smoke A (B, C) class flame-retardant control cable |
| WDZA-KYJYP3 | Copper-core cross-linked poly-insulated copper-plastic composite tape, shielded with polyolefin sheath, halogen-free, low-smoke A (B, C) class flame-retardant control cable |
