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Mounting process of three-core cable shrink terminal

A three-core cable and installation process technology, applied in the direction of connecting/terminating cable equipment, etc., can solve the problems of low interface field strength, complex installation process, low electrical and mechanical strength, etc., to achieve high work efficiency and simple installation process. , easy to grasp effect

Inactive Publication Date: 2010-10-27
北京国电瑞风电气有限公司
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  • Abstract
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  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Most of the traditional heat-shrinkable cable terminals are insulators made of ceramics or other insulating materials. The materials are not elastic, and they are wrapped around. They are not tightly combined with the cable core or cable sheath. The process is relatively complicated, and the parts are easily damaged during the installation process. Therefore, limited by the material properties, the interface field strength is low, and it is difficult to meet the needs of long-term safe operation of the power transmission system above 15kv. The traditional installation technology does not have moisture-proof, explosion-proof and resistance Fire and other safety features

Method used

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  • Mounting process of three-core cable shrink terminal
  • Mounting process of three-core cable shrink terminal
  • Mounting process of three-core cable shrink terminal

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Embodiment Construction

[0020] The invention provides a three-core cable cold-shrink terminal installation process. Below in conjunction with the accompanying drawings, taking the installation process of a 15KV three-core cable cold-shrink terminal as an example, the installation steps of the present invention will be described in detail:

[0021] 1) In order to reduce the impact caused by moisture, pollution or unevenness at the end of the cable, measure the straightened cable from the end of the cable to the back for more than 900mm, and strip the outer sheath 1 of the end to expose three cable cores;

[0022] 2) Take the first constant force spring 3, clamp the ground wire 2 on the steel armor, cut off the steel armor along the upper end of the first constant force spring 3, measure 10mm from the end of the cut steel armor, and then cut off the inner Sheath, be careful not to damage the copper shielding 5, and wrap a circle of PVC red, yellow, and green tapes on the ends of the three cable cores f...

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Abstract

The invention discloses installation technique of a cold shrinkable terminal of a three core cable, belonging to power transmission system in power cable installation field. The technique includes the following steps: unwrapping the outer cover of the cable, installing the mutually insulated ground wire and the reversely folded ground wire, sheathing a three-finger sleeve onto the root of the three core cable, respectively sheathing the cold shrinkable jackets onto the cable cores which are provided with copper shields, and finally installing the cold shrinkable terminal and crimping wiring terminals on the cable cores with copper shields. In the technique, sealing and insulation operations are critical to the long time safe operation of the power transmission system above 15kv, and the power transmission system the damp-proof, explosion-proof and flame-retardant safety properties. The installation technique is simple and easy and is highly efficient.

Description

technical field [0001] The invention belongs to the technical field of power cable assembly in power transmission systems, and in particular relates to a three-core cable cold shrink terminal installation process. Background technique [0002] Most of the traditional heat-shrinkable cable terminals are insulators made of ceramics or other insulating materials. The materials are not elastic, and they are wrapped around. They are not tightly combined with the cable core or cable sheath. The process is relatively complicated, and the parts are easily damaged during the installation process. Therefore, limited by the material properties, the interface field strength is low, and it is difficult to meet the needs of long-term safe operation of the power transmission system above 15kv. The traditional installation technology does not have moisture-proof, explosion-proof and resistance ignition and other safety features. Contents of the invention [0003] The purpose of the prese...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02G1/14
Inventor 罗一兵
Owner 北京国电瑞风电气有限公司
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