Anti-freezing and interference-resistant cross-linked polyethylene insulation variable-frequency power cable

Abstract

The invention discloses an anti-freezing and interference-resistant cross-linked polyethylene insulation variable-frequency power cable. The power cable comprises a cable core, wherein the cable core is formed by twisting a plurality of main wire cores and a grounding core, an anti-freezing and high-density polyethylene filling layer is arranged in a gap of the cable core, a wrapping tape is arranged outside the cable core, an anti-freezing and high-density polyethylene sheath is arranged outside the wrapping tape in an extruded way, each main wire core comprises a main wire core conductor, an internal shielding layer, an insulation layer, an insulation shielding layer, a semiconduction tape and a copper tape split-phase corrugated metal shielding layer, the internal shielding layer, the insulation layer and the insulation shielding layer are arranged outside the main wire core conductor in an extruded way, the semiconductor tape wraps the insulation shielding layer, and the copper tape split-phase corrugated metal shielding layer longitudinally wraps the semiconduction tape. By the power cable, a metal shielding mode is improved, a conventional copper tape or copper wire weaving net is change to split-phase copper tape longitudinal-wrapping welding corrugated shielding, an all-sealed metal layer structure is formed, so that an electromagnetic wave generated when the power cable is energized is completely shielded, and the anti-interference shielding effect is greatly improved.

Description

technical field [0001] The invention relates to the field of cables, in particular to a multi-core high-temperature-resistant photoelectric composite silicon rubber sheathed cable. Background technique [0002] In the past two decades, frequency conversion and speed regulation systems have been widely used. The 2012 China Inverter Market Research Report shows that China's inverter market has maintained a high-speed growth of 15% -20% in the past few years. In 2012, due to industrial and construction With the rapid development of the industry and a large amount of investment in various industries, the year-on-year growth rate reached nearly 40%, and the market size exceeded 8.5 billion yuan. With the extensive application of frequency conversion devices, the demand for frequency conversion cables used in conjunction with them is also increasing. The market The annual demand is also increasing at an annual rate of 30%. The frequency conversion cable is a special cable for pow...

AI Technical Summary

Problems solved by technology

When the cable is shielded with copper wire braiding, the shielding suppression coefficient has a great relationship with the braiding density. With the increase of the copper wire braiding density, the shielding suppression coefficient is also increasing, and the greater the braiding density, the better th

Images