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Single-core cable transposition connecting device

A technology for connecting devices and single-core cables, applied in the field of electric power, can solve problems such as low maintenance efficiency and complicated operation of cable cross interconnection boxes.

Active Publication Date: 2020-01-07
SHENZHEN POWER SUPPLY BUREAU
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Based on this, it is necessary to provide a single-core cable transposition connection device for the problems of complicated operation and low maintenance efficiency of the existing cable cross interconnection box

Method used

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  • Single-core cable transposition connecting device
  • Single-core cable transposition connecting device
  • Single-core cable transposition connecting device

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Embodiment Construction

[0064] In order to make the above purpose, features and advantages of the present application more obvious and understandable, the specific implementation manners of the present application will be described in detail below in conjunction with the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the application. However, the present application can be implemented in many other ways different from those described here, and those skilled in the art can make similar improvements without departing from the connotation of the present application. Therefore, the present application is not limited by the specific implementation disclosed below.

[0065] The serial numbers assigned to components in this document, such as "first", "second", etc., are only used to distinguish the described objects, and do not have any sequence or technical meaning. The "connection" and "connection" mentioned in t...

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Abstract

The invention relates to a single-core cable transposition connecting device. The single-core cable transposition connecting device comprises a box body, an upstream connecting device group, a downstream connecting device group, a protection device group and a third connecting device; one upstream connecting device is electrically connected with one cable metal sheath at the upstream side of powertransmission through a first single-core cable; one downstream connecting device is electrically connected with one cable metal sheath at the downstream side of power transmission through one secondsingle-core cable; the upstream connecting device group and the downstream connecting device group are interconnected and intersected with each other; and when a certain upstream or downstream cable metal sheath is connected wrongly, a connection relationship between the corresponding first single-core cable and upstream connecting device or a connection relationship between the corresponding second single-core cable and downstream connecting device is changed, so that the upstream or downstream cable metal sheath can be connected correctly. With the single-core cable transposition connectingdevice adopted, a cable is not required to be replaced or a connecting box is not required to be opened. With the single-core cable transposition connecting device adopted, maintenance steps and operation procedures are simplified, and maintenance efficiency is improved.

Description

technical field [0001] The present application relates to the field of electric power technology, in particular to a single-core cable transposition connection device. Background technique [0002] Urban power grids usually use high-voltage single-core cables for power transmission. When the cable core has a current passing through it, an induced voltage is generated on the cable metal sheath, and the greater the cable load and the longer the line, the higher the induced voltage. If the three-phase cable circuit is completely symmetrical and the current in the three-phase circuit is also completely symmetrical, the voltage induced in the aluminum sheath of the three-phase cable is completely symmetrical, and their vector sum is zero. Using this principle, a longer cable line is provided with a three-phase metal sheath cross-connection at the joint position. The induced voltage of the entire cross-connection section is reduced through two cross-connections. At the insulating ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02G15/16
CPCH02G15/16
Inventor 陈腾彪
Owner SHENZHEN POWER SUPPLY BUREAU
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