Underground wiring device of 0.4 KV (kilovolt) power cable

A wiring device and power cable technology, which is applied in the field of electric power, can solve problems such as affecting the normal power supply of users or equipment, easy oxidation and heat generation of cable joints, and injury to equipment personnel, so as to achieve safe, reliable and safe operation, reduce the failure rate of joints, and ensure safe operation Effect
CN107863746AInactive Publication Date: 2018-03-30STATE GRID CORP OF CHINA +2
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
STATE GRID CORP OF CHINA
Publication Date
2018-03-30
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention relates to an underground wiring device of a 0.4 KV (kilovolt) power cable. The underground wiring device is characterized in that the wiring device comprises a shell with both ends provided with threaded sealing holes; the shell which is a top-bottom split structure connected by means of bolts is internally provided with a set of insulating plates arranged in parallel along the longitudinal direction; a cable connection channel is formed between the insulating plates and the shell and between the insulating plates; both ends of a disconnecting portion of a same core in the cablerespectively pass through the treaded sealing holes in both ends and then are connected through the same cable channel; both ends of the shell are rubber tubes whose inner holes are the threaded sealing holes; the threaded sealing holes are of a bell mouth shape gradually expanding outwards; the thickness of the insulating plates is not less than 2 mm. The underground wiring device of the 0.4 KVpower cable has the advantages that short-circuit faults are avoided by sealing a cable to be connected via the shell with the threaded sealing holes and isolating the core of the cable via the insulating plates; the underground wiring device provides good connection simplicity and good sealing effect, can effectively prevent erosion and damage of the cables in the soil, and can effectively reducecable connection failure rate.
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Description

technical field

[0001] The invention belongs to the technical field of electric power, and in particular relates to an underground connection device for 0.4KV power cables. Background technique

[0002] During the laying process of 0.4kV buried cables, intermediate connectors are often used due to insufficient cable length. Generally, low-voltage cables are connected by terminal connection or cable crimping, and then wrapped with insulating tape for insulation treatment. Since most of the low-voltage buried cables on site are directly buried in soil trenches, in the soil environment due to various factors such as humidity and operation, the cable joints are prone to oxidation and heat generation, resulting in frequent joint disconnection faults, which affect the normal power supply of users or equipment. And it is still the same treatment method when restoring, there is no better equipment or technical means suitable for on-site inspection and maintenance, resulting in an u...

Claims

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