Spring control device for a circuit breaker

Patent metadata

Field	Value
Publication number	US-9589744-B2
Application number	US-201314443283-A
Country	US
Kind code	B2
Filing date	Nov 20, 2013
Priority date	Nov 21, 2012
Publication date	Mar 7, 2017
Grant date	Mar 7, 2017

Abstract

For application to medium- and high-voltage circuit breakers, the control device makes it possible to actuate opening of the circuit breakers used in the medium- and high-voltage networks very quickly. The spring used in the control device is a spring of the composite type, having a curved C- or Ω-shape. The spring has a stationary first end and a movable second end that is pivotally connected to the end of a lever device, that is itself constrained to rotate with the drive shaft of the control device.

First claim

The invention claimed is:

1. A spring control device for a circuit breaker in a high- or medium-voltage electrical network, the device including a drive shaft ( 6 ) for enabling very fast actuation of at least one movable contact of the circuit breaker;
the control device comprising a composite spring having a C-shape or Omega (Ω)-shape, and in that the spring has:
a first end ( 2 ) in the shape of a hook and fastened to a housing ( 10 A, 10 B) of the control device; and
a second end ( 3 ) in the shape of a hook that is movable and that is pivotally fastened to a distal end of a lever system ( 7 ), the distal end of the lever system being constrained to rotate with the drive shaft ( 6 ).

2. A spring control device for a circuit breaker in a high- or medium-voltage electrical network, comprising:
a drive shaft for enabling actuation of at least one movable contact of the circuit breaker;
the control device comprising a composite spring having a C-shape or Omega (Ω)-shape, and having:
a first end in the shape of a hook and fastened to a housing of the control device; and
a second end in the shape of a hook that is movable and that is pivotally fastened to a distal end of a lever system, the distal end of the lever system being constrained to rotate with the drive shaft; and
a housing having two parallel plates between which there is fastened a stationary rod that is fastened to the first end of the spring, the second end of the spring being movable between the two plates.

Assignees

• Alstom Technology Ltd

Inventors

• Aeschbach Heinz
• Ardyna Simon
• Dupraz Jean-Pierre
• Berard David

Classifications

• H01H71/10

  Operating or release mechanisms · CPC title

• H01H3/38 Primary

  using spring or other flexible shaft coupling · CPC title

• H01H3/3015

  using cam devices · CPC title

• H01H3/30 Primary

  using spring motor · CPC title

• H01H2235/018

  Spring seat · CPC title