Mineral cables are the earliest fire-proof cables. They were first developed and patented by the Swiss in 1895. In 1934, the French took the lead in applying the technology to mass production, and were later developed to a certain scale and formulated by the British. Industry fire protection standard bs6387 standard.
It is composed of high-conductivity copper conductors, mineral (magnesium oxide) insulation materials, and seamless copper tube sleeves. When the cable is used in situations that corrode copper, a layer of anti-corrosion is added to the outermost layer. Protective outer sheath (optional).
The earliest introduction in China was the Shanghai Cable Research Institute, and the mineral insulated cables were manufactured in batches by Shenghua Electric. The current market application is very mature.
Mineral cable bttz subsequently extended a variety of new models such as BBTRZ cable, YTTW cable, BTLY cable, etc., which were developed and improved on the basis of bttz mineral cable, inheriting the fireproof, explosion-proof and waterproof characteristics, and improving Improve production efficiency and reduce costs so that more projects can use cost-effective fireproof cables.
Mineral cables are widely used in airports, high-rise buildings, railways, underground buildings, high-risk places, etc.