Isolated copper wire cable with copper armoured under 3KV voltage rating and manufacture thereof

A mineral insulated cable, rated voltage technology, applied in the direction of insulated cables, cable/conductor manufacturing, insulated conductors, etc., can solve the problems of few applicable occasions, poor cable insulation performance, low withstand voltage level, etc.
CN1490823AInactive Publication Date: 2004-04-21JIANGSUSNGSHANG CABLE GROUP
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Patent Information

Authority / Receiving Office
CN Β· China
Current Assignee / Owner
JIANGSUSNGSHANG CABLE GROUP
Publication Date
2004-04-21
Estimated Expiration
Not applicable Β· inactive patent

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Abstract

The present invention discloses a cable with a copper core, a copper protecting sleeve and a mineral insulator having the rated voltage of 3kV or below and the manufacturing method thereof. The cable is constituted of conductor 1, covering layer 2 of the conductor, insulating layer 3, copper protecting sleeve 4 and outer protecting sheath 5. In order to obtain the cable with a copper core, a copper protecting sleeve and a mineral insulator, the manufacturing method comprises the steps as follows: providing evenly covering layer 2 of the conductor around conductor 1 to form a conductor core; then filling insulating layer 3 between the conductor core and copper protecting sleeve 4 to form a cable blank; stretching the cable blank consisting of conductor 1, covering layer 2 of the conductor, insulating layer 3 and copper protecting sleeve 4 to reduce its diameter and make insulating layer 3 fully fill up the gap between the conductor core and copper protecting sleeve 4 so as to form the cable. The cable and the method of the invention can increase effectively the insulating property of the cable, so that this cable has the high voltage level, the wide suitable range and the good safety.
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Description

Technical field

[0001] The invention relates to a mineral insulated cable with a copper core and a copper sheath, in particular to a mineral insulated cable with a copper core and a copper sheath with a rated voltage of 3kV or below. The invention also relates to a method of manufacturing such a cable. Background technique

[0002] At present, the known mineral insulated cables with copper core and copper sheath have a voltage level of 750V and below, and have the structural characteristics of solid copper as the conductor, mineral insulating powder as the insulation, and seamless copper tube as the sheath. Poor, low withstand voltage level, few applicable occasions.

[0003] The known manufacturing method of copper-core copper-sheathed mineral insulated cables with a rated voltage of 750V and below is to first draw the copper rod into a mandrel with a certain cross-section, and after annealing and cleaning, penetrate the cleaned seamless copper tube Then, the mineral insu...

Claims

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