Flexible fireproof power cable for rated voltage 0.6/1kV

Abstract

The invention discloses a flexible fireproof power cable for rated voltage 0.6 / 1kV. The flexible fireproof power cable comprises conductors. The conductors are covered by an insulating layer and an extruded layer, the extruded layer is covered by an outer sheath which is a threaded copper pipe, and the insulating layer is formed by lapping of multiple layers of mica tapes. As the conductors are covered by the insulating layer which is lapped by the mica tapes and 0.8-2.0 mm in thickness, and then covered by the extruded layer made of ceramic silicon rubber, the conductors are subjected to fireproof protection by the mica tapes and the ceramic silicon rubber, and the fire resistance temperature can be 950-1000 DEG C. As the outer sheath is of the spirally tubular shape, fireproof, waterproof, acid and alkali resistant effects are achieved, while flexibility of the outer sheath is improved, and the flexibility of the overall cable is improved. Gaps among the conductors are filled by polypropylene ropes so that tensile strength of the cable is enhanced while a shielding effect is achieved.

Description

technical field [0001] The invention relates to a power transmission power, in particular to a flexible fireproof power cable for a rated voltage of 0.6 / 1kV. Background technique [0002] In high-rise and ultra-high-rise buildings, large entertainment venues, large-scale industrial and mining, enterprises and their underground projects, cables are often laid densely. Once a fire occurs, the fire will spread to other departments or floors along the cables, and the cables are burning. Toxic gas will be produced during the process, which will cause secondary harm to the environment and human beings. Because the fireproof cable is an urgent problem to be solved in the current power cable. [0003] In order to prevent fire, the outer sheath of the power cable is generally made of fire-resistant and high-temperature-resistant materials. At present, copper tubes are mainly used. However, because the material of copper tubes is relatively hard, it is not easy to bend during manufac...

AI Technical Summary

Problems solved by technology

[0003] In order to prevent fire, the outer sheath of the power cable is generally made of fire-resistant and high-temperature-resistant materials. At present, copper tubes are mainly used. However, because the material of copper tubes is relatively hard, it is not easy to bend during manufacturing and storage, and it is not conducive to installation. construction

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