Flame-retardant cable, halogen-free cable, fire-resistant cable difference:

1, flame retardant cable is characterized by delaying the spread of flame along the cable so that the fire will not expand. Whether it is a single cable or a bundle of laying conditions, when the cable burns, the spread of the flame can be controlled within a certain range, so the major disasters caused by the fire can be avoided, thereby improving the fire prevention level of the cable line.

2, halogen-free low-smoke flame retardant cable is characterized by not only has good flame retardant performance, but also constitutes low-smoke halogen-free cable material, low corrosion and toxicity during combustion, resulting in a very small amount of smoke, thereby reducing the damage to people, instruments, equipment, conducive to timely rescue in the event of fire, although there is good flame retardant, corrosion resistance, very little smoke concentration.

3, fire-resistant cable is in the case of flame burning can maintain a certain period of normal operation, can maintain the integrity of the line. The amount of acid gas smoke generated by fire-resistant cable combustion is small, and the fire-retardant performance is greatly improved, especially in the case of burning, accompanied by water spray and mechanical blow, the cable can still maintain the complete operation of the line.

Some electrical designers are not clear about the concept of flame-retardant cables and fire-resistant cables, and do not understand the structure and characteristics of the two, which leads to the failure to correctly design and select these two cables according to the power supply requirements, and can not correctly guide the laying construction of these two cables when carrying out design agents or supervision work on site.

1, what is flame retardant cable?

Flame retardant cable refers to: under specified test conditions, the sample is burned, after removing the test fire source, the spread of the flame is only within a limited range, and the residual flame or residual burn can self-extinguish the cable within a limited time. Its basic characteristics are: in the case of fire, it may be burned and cannot run, but it can prevent the spread of the fire. Generally speaking, in case of fire, the cable can limit the combustion to a local scope, do not produce spread, save other various equipment, to avoid causing greater losses.

2, flame retardant cable structure characteristics

The structure of the flame-retardant cable is basically the same as that of the ordinary cable, the difference is that its insulation layer, sheath, outer sheath and auxiliary materials (wrapping and filling) are all or partially made of flame-retardant materials.

3. What is fire-resistant cable?

Fire-resistant cable refers to: under specified test conditions, the sample is burned in the flame, and the performance can still maintain normal operation for a certain period of time. Its fundamental characteristic is that the cable can still maintain the normal operation of the line for a period of time under burning conditions. Generally speaking, in case of fire, the cable will not burn at once, and the circuit is safer.

4, the structural characteristics of refractory cable

The structure of the fire-resistant cable is basically the same as that of the ordinary cable, the difference is that the conductor of the fire-resistant cable uses a good copper conductor (the melting point of copper is 1 083 ° C), and the fire-resistant layer is added between the conductor and the insulation layer. The refractory layer is wrapped by multiple layers of mica tape. Because the allowable working temperature of different cloud master tape varies greatly, the key to the fire resistance of the cable is mica tape.

The main differences between fire-resistant cables and flame-retardant cables:

The main difference between fire-resistant cables and flame-retardant cables is that fire-resistant cables can maintain normal power supply for a period of time in the event of a fire, while flame-retardant cables do not have this feature. This characteristic determines that fire-resistant cables play an important role in modern urban and industrial buildings.

Because once the fire occurs, the control, monitoring, guidance and alarm system power supply circuit must maintain normal operation. Therefore, the cable is mainly used in the emergency power supply to the user's fire equipment, fire alarm equipment, ventilation and smoke exhaust equipment, pilot lights, emergency power sockets, emergency elevators and other power supply circuits.

Qingdao Tianxing Cable Co., Ltd. focuses on the production of customized wire and cable manufacturers, main: fire wire and cable, power cable, control cable and other products, exported to more than 40 countries and regions around the world, the annual production capacity of 1 billion yuan. 6000 square meters of storage, standing hundreds of millions of inventory, order demand for rapid distribution and delivery, large prices more favorable.