Fire-resistant wires and cables

This product is suitable for high-rise buildings, oil fields, Power Stations, power plants, mines, chemical industries, subways and other occasions that require high fire conditions, and is also an emergency backup cable for Emergency Power Supply, fire pump, elevator communication signal system. The product has high fire resistance, in the case of direct combustion of flames, there will be no short-circuit fault for a certain period of time (not less than 3h), ensuring continuous power supply to maintain lighting and transmitting signals, protecting personnel with enough time to evacuate safely, and is conducive to extinguishing fires and reducing losses.

First, the production implementation standards

Related product standards and GB/T19666-20005

2. Conditions of use

1. AC rated voltage U0/U (Power Cable 600/1000V, K series 450/750V, B series 450/750V)

2. The maximum long-term operating temperature of the cable

Flame retardant PVC Insulation and sheath: 70°C and 105°C

XLPE insulation: 90°C

3. The temperature of cable installation and laying should not be lower than 0°C

4. Recommended allowable bending radius for laying: power cable: Single Core≥ 40D; MultiCore Cable ≥30D; Control cable: ≥12D, B series plastic wire: ≥4D (at D<25mm), 6d="" at="" d="">25mm)

3. The basic model and name are as follows

Note: The company can also provide users with Steel Wire Armored Cables, and the model description can be changed from the original "22" to "32".

4 the specification range is as follows

5. Technical characteristics

1. The electrical and physical properties of the product are the same as those of ordinary similar products;

2. The current carrying capacity of the cable is the same as that of ordinary similar products;

3. The fire resistance characteristics should meet the requirements of the IEC60331 standard, and the 3A fuse of the cable is continuous during the fire and combustion test time, and the indicator light is not extinguished;

4. The reference outer diameter of the Fire-Resistant Cable: the cross-section of 25mm² and below is 15% larger than that of the ordinary product of the same model, and the cross-sectional area of more than 25mm² is 20% larger than the ordinary model of the product;

6. Precautions for use

1. When the cable joint, the conductor and the insulation should be overlapped and wrapped tightly with four layers of mica tape as a refractory layer, and the construction method is consistent with similar products

2. The cable should be strictly avoided from being damaged by sharps, otherwise the fire resistance of the cable will be reduced;

7. Delivery requirements

Deliveries are allowed according to the length agreed by both parties, and the length measurement error does not exceed ±0.5%