The cable was first developed and patented by the Swiss in 1895, and the French took the lead in applying this technology to mass production in 1934. The appearance of mineral insulated cables has played a vital role in the innovation of traditional cables, especially in the circuit applications in special environments and places. This is something that traditional cables cannot do.
BTTZ mineral insulated cable is mainly composed of high conductivity copper conductor, mineral (magnesium oxide) insulating material and seamless copper sleeve. When the cable is used in the occasion where copper is corroded, the outermost layer is provided with an anti-corrosion protective outer sheath (optional).
Structure diagram of BTTZ mineral insulated cable. The continuous working temperature of bare cable can reach 250 C. When the temperature reaches 950 C-1000 C, the power supply can last for more than 3 hours. It can work for a short time or in an extraordinary period at a temperature close to the melting point of copper (1038 c), and the melting point of mineral (magnesium oxide) is 2800 c.