Isolation type middle-high voltage fireproof cable

A fireproof cable, medium and high voltage technology, applied in the direction of insulated cable, power cable, power cable with shielding layer/conductive layer, etc., can solve the problem of difficult bending of inorganic flame-retardant cables, achieve small bending force, avoid lightning strikes Wear, good corrosion resistance effect
CN112951501APending Publication Date: 2021-06-11ιƒ­ζ™Ίζ˜Š
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Patent Information

Authority / Receiving Office
CN Β· China
Patent Type
Applications(China)
Current Assignee / Owner
ιƒ­ζ™Ίζ˜Š
Publication Date
2021-06-11

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Abstract

The invention relates to the technical field of cable devices, and discloses an isolation type middle-high voltage fireproof cable. The isolation type middle-high voltage fireproof cable is characterized by comprising a cable core and a protective jacket, wherein the cable core is arranged in the protective jacket, the protective jacket comprises a first insulating layer, a metal shielding layer, a second insulating layer, a flame-retardant layer, a corrosion-resistant layer and an outer protective layer from inside to outside, the flame-retardant layer is formed by spacing the outer side surface of the second insulating layer and the inner side surface of the corrosion-resistant layer, and the flame-retardant layer is filled with flame-retardant particles; the outer side face of the second insulating layer is provided with protruding ribs which are arranged in a protruding manner, and the protruding ribs are arranged in a spiral manner. The flame-retardant cable has good bending performance, and a flame-retardant structure is not prone to being damaged.
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Description

technical field

[0001] The invention relates to the technical field of cable equipment, in particular to an isolated medium and high voltage fireproof cable. Background technique

[0002] At present, the national standard for the implementation of ordinary flame-retardant cables is: GB / T18380-2008 (hereinafter referred to as the national standard). Class D currently judges the category of flame-retardant cables by calculating the "non-metallic content" of each meter of cable installed and laid. In addition to the conductor of ordinary flame-retardant cables being metal (copper or aluminum), the others (insulation, filling, wrapping tape, sheath) are all "non-metallic". The following are the indicators and requirements of the national standard flame-retardant cable vertical bundle combustion test.

[0003] At present, there are more and more types of flame retardant cables on the market. Most of the designs are filled with flame retardants on the outer layer of the cables. ...

Claims

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