Mineral Insulated Cable (Mineral Insulated Cable) referred to as MI cable, as a wiring use, the domestic custom is called magnesium oxide cable or fireproof cable. The following is a detailed introduction to mineral insulated cables by Tianxing cable.


intro

Mineral Insulated Cable (Mineral Insulated Cable) referred to as MI cable, as a wiring use, the domestic custom is called magnesium oxide cable or fireproof cable. It is a copper core copper-sheathed cable insulated by mineral material magnesium oxide powder, and the mineral insulated cable is composed of two inorganic materials: copper conductor, magnesium oxide and copper sheath.

peculiarity

Power frequency use voltage U0/U: 0.6/1kV. Long-term allowable working temperature of cable conductor 150℃; In case of fire, the allowable operating temperature of the cable conductor: 950℃; The ambient temperature should not be lower than 0℃ when the cable is laid. The bending radius of the cable must be at least 20 times the outer diameter of the cable.

Product use

Mineral insulated cables are mainly suitable for high-rise buildings in large cities, entertainment venues and many construction projects requiring high quality and high safety, and are used for fire elevator, fire pump, fire alarm, smoke exhaust system, emergency photos and power supply lines in fire danger areas, high temperature occasions and facilities requiring special safety.


Mineral insulated cables are divided into flexible mineral insulated cables and rigid mineral insulated cables. Flexible mineral insulated cables have strong flexibility but poor impact resistance. Rigid mineral insulated cable itself stiff, but strong impact resistance.

Models of flexible mineral insulated cables include YTTW, HFTGB, BTLY, and BBTRZ.

Rigid mineral insulated cable models represent only BTTZ cables.

From the appearance point of view, mainly look at the cable model, the outer layer of each cable is sprayed with the model, in addition to distinguish BTTZ rigid mineral insulated cable, the rest of the cable are flexible mineral insulated cable.

Flexible mineral insulated cable industry standard JG/T 3, the fire rating is BS 6387 CWZ, the highest conductor operating temperature can reach 950℃ flexibility, but the fire resistance and water resistance is general. It should be laid under the protection of a closed bridge or a pipe, and the general service life is about 50-100 years.

The national standard G rigid mineral insulated cable B/T13033, the fire rating is BS 6387 CWZ, the maximum operating temperature of the conductor can reach 1000℃, not only has strong impact resistance, but also has excellent fire resistance and waterproof performance. Laying conditions: no bridge or pipeline, general service life of more than 100 years.

Flexible mineral insulated and rigid insulated cables have the characteristics of waterproof, rat-ant-proof, high mechanical strength, corrosion resistance, energy saving and environmental protection, radiation protection and long service life.



Qingdao Tianxing Cable Co., Ltd. is a technical enterprise specializing in the production of wire and cable in Shandong Province. After years of unremitting efforts, the company has established a good brand image in the industry, and built a new modern production base, updated some modern intelligent production equipment, and established a new enterprise management system of institutionalization, process and standardization. Enterprises adhering to the cultural purpose of "Tianxing Jian terrain Kun", to do a good job of wire and cable concept, and strive to be perfect, "good products, good service customers".