Standard: This is a reference to the enterprise standard GB / T5023-2008. GB / Tl2706-2008 and other standard-setting, its fire-resistant properties to meet the requirements GB / Tl9666 class. When the cables burning of toxic gases and smoke density test compliance with GB / T17650.2-98 and GB / T17651.2-98 of. Smoke toxicity in line with GBl32 quasi-safety level requirements. Scope: This product is suitable for power plants. Chemical, tunnels, stations. The key parts of the high-rise building fire protection systems are particularly suitable for emergency power supply line to the indoor fire-fighting equipment. Emergency power supply line and the fire alarm system, emergency power supply to the lights and emergency power supply line to the supply line exhaust ventilation equipment, such as the use of features 1, conductor long-term operating temperature of 70 ℃, 90 ℃ 2, cable 750-850 ℃ under fire conditions. Can maintain the normal operation of more than 1.5 hours. The B Class fire. Cable at 950-1000 ℃ fire conditions. Can maintain the normal operation of more than 1.5 hours, the A Class fire. 3, toxic gases and smoke density test results meet GB / T17650.2-98 and GB / T17651.2-98 regulations 4, smoke toxicity in line with GAl32 quasi-safety level requirements. Type and name: WDNH (A) -BY (J) halogen cross-linked polyolefin insulation refractory wire WDNH (A) -BY (J) Y halogen cross-linked polyolefin insulation and sheathing refractory wire WDZAN- YJY halogen cross-linked polyolefin insulation fire-resistant power cable Model name WDZN-BY (J) halogen cross-linked polyolefin insulated wire WDZN-BY (J) Y halogen cross-linked polyolefin insulation and protection Copper core set of wires WDZN-BY halogen fire retardant polyolefin insulated cables and wires WDZN-BYJ Copper core halogen fire retardant crosslinked polyolefin insulated cables and wires WDZN-BYY Copper core halogen fire retardant polyolefin insulation and sheath cable wires WDZN-RYY (B) P Copper core halogen fire retardant polyolefin insulation and sheathing copper wire shield (flat type) flexible cables and wires WDZN-RYJY (B) P Copper core low smoke halogen-free fire retardant crosslinked polyolefin insulation and sheathing copper wire shield (flat type) flexible cables and wires WDZN-RYY Copper core halogen fire retardant polyolefin insulation and sheathing soft cable copper core wire WDZN-RYJY halogen fire retardant crosslinked polyolefin insulated and sheathed flexible cable wires WDZN-BYR Copper core halogen fire retardant polyolefin insulated flexible wire WDZN-BYJR Copper core halogen fire retardant crosslinked polyethylene olefin insulated flexible wire WDZN-RY halogen fire retardant polyolefin insulated copper conductor flexible wire WDZN-RYJ Copper core halogen fire retardant crosslinked polyolefin insulated flexible wire WDZN-BYYB Copper core halogen resistance burning fire-resistant polyolefin insulation and sheath flat cable wires WDZN-BYJYB Copper core halogen fire retardant crosslinked polyolefin insulated and sheathed flat cable wires WDZN-RYYB Copper core halogen fire retardant polyolefin insulated parallel cords WDZN-RYJYB Copper core halogen fire retardant crosslinked insulated parallel cords