JPS6080688U

JPS6080688U - Lightning damage protection device for pole transformers equipped with leadless bushings

Info

Publication number: JPS6080688U
Application number: JP17223983U
Authority: JP
Inventors: 深尾　友則
Original assignee: 日本高圧電気株式会社
Priority date: 1983-11-07
Filing date: 1983-11-07
Publication date: 1985-06-04

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Brief explanation of the drawing]

第１図は従来例を示す保護装置の取付状態図、第２図は
本案の実施例を示す保護装置の要部を破断した取付状態
図、第３図は絶縁支持体の縦断面図、第４−は同じく絶
縁支持体の一部を破断した底面図を各々示す。１・・・柱上用変圧器、２・・・ケース、２ａ・・・ケ
ース外面、３・・・−次側ブッシング、８・・・引出導
体、１１・・・限流素子ユニット、１３・・・吊下金具
、１４・・・取付金具、１５・・・下部端子、１６・・
・絶縁容器、１７・・・限流素子、１８・・・上部端子
、１９・・・リード線、２０・・・放電電極、２０ａ・
・・放電部、２１・・・絶縁支持体、２１ａ・・・底部
、２１ａ１・・・底部内面、２．１ｂ・・・鍔部、２１
ｃ・・・側周部、Ｇ・・・放電キャップ。Fig. 1 is an installation state diagram of a protective device showing a conventional example, Fig. 2 is an installation state diagram showing an embodiment of the present invention with main parts of the protection device cut away, and Fig. 3 is a longitudinal sectional view of an insulating support. 4- shows a bottom view in which a portion of the insulating support is similarly cut away. DESCRIPTION OF SYMBOLS 1... Pole transformer, 2... Case, 2a... Case outer surface, 3... Next side bushing, 8... Output conductor, 11... Current limiting element unit, 13... ...Hanging bracket, 14...Mounting bracket, 15...Lower terminal, 16...
- Insulating container, 17... Current limiting element, 18... Upper terminal, 19... Lead wire, 20... Discharge electrode, 20a.
...Discharge part, 21...Insulating support body, 21a...Bottom part, 21a1...Bottom inner surface, 2.1b...Brim part, 21
c...Side periphery, G...Discharge cap.

Claims

[Scope of utility model registration request]

The lead-out conductor is led out of the case through a primary bushing that penetrates the inside and outside of the case, and is attached to the outer surface of the case near the bushing via an insulating support made of rubber or synthetic resin insulator. A discharge electrode that faces the above-mentioned lead-out conductor located outside and forms a discharge gap, and a current-limiting element built in an insulating container that prevents voltage non-linearity, one end of which is connected to the same element, and the other end of which is connected to the above-mentioned discharge electrode. In a protective device consisting of an insulated lead wire connected to the case, and a current limiting element unit whose one end is connected to the current limiting element and the other end is attached to the hanging bracket of the case via the mounting bracket, The insulating support attached to the insulating support is formed into a cap shape, and a plurality of annular flanges projecting laterally are formed on the side circumference of the insulating support. It has a leadless type bushing characterized in that a discharge electrode with only the discharge part exposed and a flange protruding forward is buried and fixed together with the tip of a lead wire that connects one end to the discharge electrode and is insulated from the case. Snow damage protection device for pole-mounted transformers.