Fireproof Cables

1. Fireproof cables have a wide range of applications

With the development of the economy and the continuous improvement of people's living standards, the construction and housing industry is flourishing in various parts of the country, especially high-rise residential buildings are sprouting up like mushrooms in major cities. High rise residential buildings, like other high-rise buildings and high star hotels, have put forward more stringent operating conditions for the fire resistance characteristics, safety and reliability of electrical wires and cables used in buildings. Such as strong fire resistance, explosion-proof, overload capacity, long service life, fire elevators and fire pumps need to maintain normal operation for a certain period of time under fire conditions. Special requirements include low smoke, low halogen, low toxicity, and even smoke-free, halogen-free, and non-toxic cables after combustion. For such harsh operating conditions, cables composed of general polymer materials cannot meet them. In recent years, Chinese wire and cable manufacturers have successively developed flame-retardant cables, low smoke and low halogen flame-retardant cables, low smoke and halogen-free flame-retardant cables, high flame-retardant cables, and fire-resistant cables. The performance of copper core copper sheathed magnesium oxide insulated fire-resistant cables (referred to as fire-resistant cables) meets the requirements of modern buildings and has been widely used in high-rise residential buildings, office buildings, hotels, commercial buildings, etc., receiving praise from users.

2. Characteristics of fire prevention
The causes of fire or combustion caused by cables can be generally summarized into two aspects: first, the self ignition of the cable body caused by cable overload or short circuit; The second is cable burning caused by external fire sources. Fireproof cables are not flammable at all, which is determined by the materials used to make them. Due to the fact that fire-resistant cables are composed of two inorganic materials, copper and magnesium oxide, with a melting point of 1083 ℃ for copper and 2800 ℃ for magnesium oxide, both of which are non combustible substances and do not emit smoke, halogenated gases, or toxic gases, they are incomparable to cables made of other organic materials.
Fireproof cables have the following advantages over flame-retardant and fire-resistant cables:
a) Fire and explosion prevention: Due to the seamless copper tube as the sheath, the cable is completely sealed, and the magnesium oxide insulation is a dense entity, making it impossible for water to enter.
b) Good corrosion resistance: Due to the good corrosion resistance of copper sheaths, there is generally no need to add protective measures. When cables are used in areas with severe chemical corrosion (such as acid and alkali) or in areas with severe industrial pollution, it is advisable to choose fire-resistant cables with PVC expansion sleeves.

c) Radiation resistance: The copper sheath has the function of a shielding layer and also has radiation resistance.