JPS63199438U

JPS63199438U -

Info

Publication number: JPS63199438U
Application number: JP9054887U
Authority: JP
Priority date: 1987-06-12
Filing date: 1987-06-12
Publication date: 1988-12-22
Anticipated expiration: 2002-06-12
Also published as: JPH0729537Y2

Description

[Brief explanation of drawings]

第１図は本考案の実施例を示す断面図、第２図
は第１図の実施例の可動コンタクトの先端と絶縁
カバーの孔部との関係を示す要部拡大断面図、第
３図は本考案で用いる絶縁カバー及び固定コンタ
クト側シールドの変形例を示した断面図、第４図
は従来の断路器の閉路状態を示す断面図、第５図
は第４図の断路器の投入直前の状態を示す断面図
である。１…固定台、２…絶縁支持台、３…固定側エレ
メント、３０１…固定電極、３０２…接触子台、
３０３…固定コンタクト、３０４…アークコンタ
クト、３０５…固定コンタクト側シールド、３１
０…絶縁カバー、３１１…絶縁カバーの孔部、４
…可動側エレメント、４０１…フレーム、４０２
…接触子台、４０３…摺動接触子、４０５…可動
コンタクト、４０７…レバー、４０８…リンク、
４０９…可動コンタクト側シールド、５…絶縁操
作棒、６…軸、７，８…レバー、９…操作リンク
。 FIG. 1 is a sectional view showing an embodiment of the present invention, FIG. 2 is an enlarged sectional view of the main part showing the relationship between the tip of the movable contact and the hole of the insulating cover in the embodiment of FIG. 1, and FIG. A cross-sectional view showing a modified example of the insulating cover and fixed contact side shield used in the present invention, FIG. 4 is a cross-sectional view showing a conventional disconnector in a closed state, and FIG. It is a sectional view showing a state. DESCRIPTION OF SYMBOLS 1... Fixed base, 2... Insulating support base, 3... Fixed side element, 301... Fixed electrode, 302... Contactor stand,
303... Fixed contact, 304... Arc contact, 305... Fixed contact side shield, 31
0... Insulating cover, 311... Hole of insulating cover, 4
...Movable side element, 401...Frame, 402
...Contact base, 403...Sliding contact, 405...Movable contact, 407...Lever, 408...Link,
409...Movable contact side shield, 5...Insulated operation rod, 6...Shaft, 7, 8...Lever, 9...Operation link.

Claims

[Claims for Utility Model Registration] (1) A fixed contact, a movable contact provided to move toward and away from the fixed contact, and a fixed contact side shield provided to cover the fixed contact, A disconnector for a gas-insulated switchgear having switching responsibilities, comprising a hole for passing the movable contact,
an insulating cover formed to cover the fixed contact side shield from the outside, and the insulating cover is configured to cause a leading arc between the movable contact and the fixed contact to occur within the insulating cover when the movable contact and the fixed contact are turned on. A disconnector for a gas-insulated switchgear, characterized in that the size and position of the disconnector are set. (2) The insulating cover is configured such that when the movable contact enters the hole of the insulating cover at the time of turning on, a preliminary arc discharge is started between the movable contact's tip and the fixed contact. A disconnector for a gas-insulated switchgear according to claim 1, wherein the wall thickness near the hole is set to be sufficiently large. (3) The disconnector for a gas insulated switchgear according to claim 1 or 2, wherein the insulating cover is integrated with the fixed contact side shield. (4) The insulating cover is made of a synthetic resin molded product, and the fixed contact side shield is formed by a conductive layer formed on the inner surface of the insulating cover, Claim 3 of the utility model registration claim 3
Disconnector for gas insulated switchgear as described in 2. (5) The utility model registration request is characterized in that the fixed contact side shield is made of a self-supporting conductive material, and the shield is integrated into the insulating cover by being cast into the insulating cover. Disconnector for gas insulated switchgear according to scope 3. (6) A utility model registration request characterized in that the fixed contact side shield is made of a self-supporting conductive material, and the insulating cover is formed by coating the outer surface of the fixed contact side shield with an insulating material. A disconnector for a gas insulated switchgear according to item 3. (7) The disconnector for a gas insulated switchgear according to any one of claims 3 to 6, wherein the insulating cover is made of epoxy resin. (8) The disconnector for a gas insulated switchgear according to any one of claims 3 to 6, wherein the insulating cover is made of tetrafluoroethylene resin.