Switching device for a medium-voltage electrical circuit

Patent metadata

Field	Value
Publication number	US-2024355563-A1
Application number	US-202418628946-A
Country	US
Kind code	A1
Filing date	Apr 8, 2024
Priority date	Apr 20, 2023
Publication date	Oct 24, 2024
Grant date	—

Abstract

A switching device for a medium-voltage electrical circuit including: a frame; a vacuum circuit breaker including a fixed electrode relative to the frame and a mobile electrode; an elastic member; and an actuating lever connected to the mobile electrode via the elastic member, The actuating lever is movable between an open position in which the electrodes are separated by an open distance, and a closed position in which the electrodes are in contact. A passage of the actuating lever from the open position to the closed position defines a displacement stroke, greater than the open distance such that the elastic member is compressed when the actuating lever passes from the first position to the second position. The switching device includes at least one removable spacer arranged between the frame and the fixed electrode.

First claim

1 . A switching device for a medium-voltage electrical circuit, comprising:
a frame, a vacuum circuit breaker comprising a fixed electrode relative to the frame and a mobile electrode, an elastic member, an actuating lever connected to the mobile electrode via the elastic member,
the actuating lever being movable between a first position called open position in which the mobile electrode and the fixed electrode are separated by an open distance, and a second position called closed position in which the mobile electrode and the fixed electrode are in contact so as to allow current to flow through the electrical circuit,
a passage of the actuating lever from the first position to the second position defining a displacement stroke,
the displacement stroke of the actuating lever being greater than the open distance such that the elastic member is compressed when the actuating lever passes from the first position to the second position,
wherein the switching device comprises at least one removable spacer arranged between the frame and the fixed electrode so as to adjust the distance between the fixed electrode and the frame by removing the removable spacer.

2 . The switching device according to claim 1 , comprising a device for determining a difference between the displacement stroke of the actuating lever and the open distance of the mobile electrode with respect to the fixed electrode.

3 . The switching device according to claim 1 , wherein the actuating lever is connected to the mobile electrode via an insulator, and wherein the actuating lever is connected to the mobile electrode via a control plate in pivot connection with the control lever.

4 . The switching device according to claim 1 , comprising a receiving enclosure fixed to the frame, wherein the vacuum circuit breaker is arranged in the receiving enclosure, and wherein the fixed electrode is rigidly connected to the receiving enclosure.

5 . The switching device according to claim 4 , wherein the at least one removable spacer is arranged between the receiving enclosure and the frame.

6 . The switching device according to claim 4 , wherein the at least one removable spacer is arranged between a fixing flange, for fixing the receiving enclosure to the frame, and the frame.

7 . The switching device according to claim 4 , wherein the receiving enclosure comprises a first portion fixed to the frame and a second portion fixed to the first portion,
and wherein the at least one removable spacer is arranged between the first portion and the second portion of the receiving enclosure.

8 . The switching device according to claim 4 , wherein the at least one removable spacer comprises a notch for passage of a fixing means for fixing the receiving enclosure to the frame.

9 . The switching device according to claim 4 , wherein the at least one removable spacer comprises a first plate and a second plate, each plate comprising a first notch for passage of a first fixing means for fixing the receiving enclosure to the frame and a second notch for passage of a second fixing means for fixing the receiving enclosure to the frame.

10 . The switching device according to claim 1 , wherein the at least one removable spacer comprises a stack of at least two plates.

11 . A three-phase medium-voltage electrical unit, comprising for each phase a switching device according to claim 1 .

12 . The electrical unit according to claim 11 , wherein each switching device comprises at least one removable spacer which is separate from the at least one removable spacer of the other switching devices.

13 . The electrical unit according to claim 11 , comprising at least one removable spacer which is shared by the three switching devices.

Assignees

• Schneider Electric Ind Sas

Inventors

• Kraynov Vladislav

Classifications

• H01H33/662

  Housings or protective screens · CPC title

• H01H33/666

  Operating arrangements · CPC title

• H01H33/66 Primary

  Vacuum switches · CPC title

• H01H2033/6667

  Details concerning lever type driving rod arrangements · CPC title

• H01H33/664

  Contacts; Arc-extinguishing means, e.g. arcing rings · CPC title