Built-in fuse type PT

A fuse and station technology, applied in switchgear, pull-out switchgear, electrical components, etc., can solve the problems of increasing the space occupied by the PT part, increasing the difficulty, etc., to improve safety, reliability, practicability, and improvement. simple effect

Inactive Publication Date: 2017-09-22
STATE GRID TIANJIN ELECTRIC POWER +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When the site is tense and the original equipment does not have PT cabinets, there is only one reserved manhole. In the project of automatic transformation of the opening and closing station, due to the site terrain, the foundation cannot be expanded, but at this time the user needs to install PT (voltage Transformer), and a load switch cabinet should be installed at the front end of the PT to facilitate maintenance, and at the same time, a manhole should be reserved. Since the existing ordinary PT needs to be connected to an external fuse and cable head, this increases the PT part in The occupied space in the opening and closing station increases the difficulty of the renovation and construction of the entire opening and closing station

Method used

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  • Built-in fuse type PT
  • Built-in fuse type PT

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Embodiment Construction

[0013] The embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings; it should be noted that the embodiments are illustrative, not restrictive, and cannot limit the protection scope of the present invention.

[0014] A PT with a built-in fuse, including a PT body 1 for a station. The PT for a station has a built-in fuse structure. A conductive spring structure 6 is installed inside the sleeve 2 of the PT for a station. The fuse 5 is installed in the sleeve of a PT for a station. Inside the cylinder, one end of the fuse is connected to the conductive spring structure, and the other end of the fuse is threaded and connected to the cable head 4 . The cable head is inserted on the sleeve of the PT and fastened with screw 3, which can be installed reliably.

[0015] Due to the small and compact fuse built-in structure, the station PT and load switch cabinet can be installed in the cement shell of the switching station.

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Abstract

The invention relates to a PT with a built-in fuse, which includes a PT body for a station. The PT body for a station is a built-in fuse structure. A conductive spring structure is installed inside the sleeve of the PT for a station. The fuse is installed in the sleeve of the PT for a station. Inside the barrel, one end of the fuse is connected to the conductive spring structure, and the other end of the fuse is threaded and connected to the cable head. The present invention is a built-in fuse-type PT with reasonable design, simple improvement and strong practicability. The present invention adopts a built-in fuse structure, so that PTs and load switch cabinets can be added in the switching station according to the needs of customers, and finally realized The PT can be inspected and repaired without power off, which improves the construction efficiency and reduces the construction cost.

Description

technical field [0001] The invention relates to the technical field of electric equipment, in particular to a built-in fuse type PT. Background technique [0002] Ordinary switching station includes switchgear PT interval, switchgear outlet interval and manhole, these three are combined and installed in the cement shell to become an opening and closing station, the main bus bar of the PT cabinet is connected to the main bus bar of the switch outlet interval to make it work. When the site is tense and the original equipment does not have PT cabinets, there is only one reserved manhole. In the project of automatic transformation of the opening and closing station, due to the site terrain, the foundation cannot be expanded, but at this time the user needs to install PT (voltage Transformer), and a load switch cabinet should be installed at the front end of the PT to facilitate maintenance, and at the same time, manholes should be reserved. Since the existing ordinary PT needs ...

Claims

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Application Information

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IPC IPC(8): H02B11/26
CPCH02B11/26
Inventor 赵冠桥杨法杨改琴周庆祝刘月婵杜艳洁刘泊安高晓枫
Owner STATE GRID TIANJIN ELECTRIC POWER
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