Low-noise high-strength variable-frequency cable

Abstract

The invention discloses a low-noise high-strength variable-frequency cable. The cable comprises three groups of power line cores, wherein a closed space formed at the inner sides of the three groups of power line cores is filled with a semiconductive filling core, three grounding wires are uniformly distributed in a gap outside the three groups of power line cores and jointly form a cable core, the cable core is covered with a copper foil band, a tinned copper wire drainage wire is stranded on the copper foil band, a woven shielding layer is arranged outside the copper foil band, a composite sheath is arranged outside the woven shielding layer, and the central position of the thick wall of the composite sheath is provided with two parallel high-strength steel wires arranged along the longitudinal direction of the cable. Compared with the prior art, the adopted copper band plus copper wire woven structure guarantees good electromagnetic shielding performance of the cable; the selected 3+3E structure effectively suppresses odd harmonics in higher harmonics, and the anti-interference performance of the cable is achieved; and the two parallel high-strength steel wires are arranged at the center of the thick wall of the composite sheath to form a tensile component, so that the requirement for electromagnetic compatibility in the equipment set running process is met, and the strengthof the cable is improved.

Description

Technical field [0001] The invention belongs to the technical field of cables, and specifically relates to a low-noise high-strength variable frequency cable. Background technique [0002] At present, more and more equipment such as frequency conversion devices are used on ships and platforms in pursuit of energy saving, reducing equipment wear, and extending equipment life. The use of frequency conversion equipment has an increasing demand for supporting special cables, and the technical requirements are also getting higher and higher. Due to its special use environment and performance requirements, variable frequency cables must consider the influence of the outside world on the variable frequency cable and the influence of the variable frequency cable on the outside world. At the same time, the insulation withstand voltage, laying space, bending radius and so on of the variable frequency cable must also be considered. The existing ordinary cables cannot meet their needs. At ...

AI Technical Summary

Problems solved by technology

Existing ordinary cables cannot meet their needs

At the same time, the strength of most ship frequency conversion cables is poor, which affects the service life

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