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Fire resistance of mineral insulated fireproof cables

2018-12-22

The continuous operation temperature of the mineral cable is 250 °C, and it can be continuously supplied for 3 hours at 950 °C-1000 °C. It can work close to the melting point of copper at 1083 °C in a short time or very period. Due to the excellent performance of mineral insulated fireproof cables, it is suitable for lines with rated voltages below 1000V.

$J7K[0%V1WC{S_T5)(~DY2)F$

Whether in a factory or in a building, the safety of electrical lines is critical. According to the statistics of the relevant state departments, in the cause of fire, fires caused by electrical lines accounted for more than 50%. The cable is both the main body and the difficult part of the protection. Therefore, the cable must not only have the ability to resist external flame damage, but also have the characteristics that it does not generate a fire source. Since the mineral-insulated fire-retardant cable is made of a mineral material uniformly, the insulator magnesium oxide does not generate an open flame when it is overloaded or short-circuited. Therefore, a line composed of a mineral insulated cable will never cause a fire. If the fire is caused by other reasons, the cable will not only be tested by the raging fire, but also by other falling objects. At this time, the cable can ensure the normal starting of the fire-fighting equipment, the fire extinguishing and the evacuation of the personnel without generating smoke and toxic gas, which is the key to evaluate the fire-resisting ability of the line.

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