Intrinsically safe power cables for monitoring and alarm systems

Abstract

The invention discloses an intrinsic safety type power cable for a monitoring alarm system. The intrinsic safety type power cable comprises a cable core which comprises a Y-shaped rubber skeleton of a hollow structure, and a plurality of small holes are evenly formed in the Y-shaped rubber skeleton. A drainage wire is formed in the center of the Y-shaped rubber skeleton, three gaps of the Y-shaped rubber skeleton are respectively provided with a power wire core, and the power wire cores comprise two fan-shaped wire cores and one circular wire core. Each fan-shaped wire core comprises a fan-shaped conductor and a silicon rubber insulation layer which is wrapped outside the corresponding fan-shaped conductor, and the circular wire core comprises a circular conductor, a mica layer and a fluoroplastic insulation layer, wherein the mica layer and the fluoroplastic insulation layer are wrapped outside the circular conductor. A wrapping layer, a copper wire braiding shielding layer and a sheath layer are sequentially wrapped outside the cable core. According to the intrinsic safety type power cable for the monitoring alarm system, the Y-shaped rubber skeleton of the hollow structure is used, the small holes are evenly formed in the Y-shaped rubber skeleton, so that the drainage wire can drain the current of any electric leakage wire core out, the using safety of the cable is guaranteed, and the firmness and the stability of the cable are increased.

Description

technical field [0001] The invention mainly relates to the field of cables, in particular to an intrinsically safe power cable for a monitoring and alarm system. Background technique [0002] The inner conductor of the traditional power cable for monitoring and alarm system is a copper conductor, and the sheath is a single-layer PVC sheath. Most of the power cables now require the cables to be low-smoke, halogen-free, environmentally friendly, corrosion-resistant, insect-resistant, Water-blocking properties, obviously the traditional power cables can no longer meet the requirements of modern monitoring and alarm systems. [0003] Traditional cable sheathing materials are prone to breakage and cracking when encountering high impact external forces, which will affect the normal operation of the cable. Contents of the invention [0004] The object of the present invention is to provide an intrinsically safe power cable for a monitoring and alarm system in order to remedy the...

AI Technical Summary

Problems solved by technology

[0002] The inner conductor of the traditional monitoring and alarm system power cable is a copper conductor, and the sheath is a single-layer PVC sheath. Most of the power cables now require the cables to be low-smoke, halogen-free, environmentally friendly, corrosion-resistant, insect-resistant, Water-blocking characteristics, obviously the traditional power cables can no longer meet the requirements of modern monitoring and alarm systems

[0003] Traditional cable sheathing materials are prone to breakage and cracking when encountering high impact external forces, which will affect the normal operation of the cable.

Images