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Circuit breaker possessing high power strength and breaking capability

A technology for circuit breakers and low-voltage circuit breakers, which is applied to circuits, components of circuit breakers, circuit breakers with excessive current, etc., and can solve problems that affect the overall size and price, and the large size of the interrupter

Inactive Publication Date: 2004-09-22
SCHNEIDER ELECTRIC IND SAS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In order to obtain sufficient breaking capacity, the electrodes and their interrupters also need to be of large size, which affects the overall size and price

Method used

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  • Circuit breaker possessing high power strength and breaking capability
  • Circuit breaker possessing high power strength and breaking capability
  • Circuit breaker possessing high power strength and breaking capability

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0019] Referring to FIGS. 1 to 4 , the operating mechanism of a multipole circuit breaker is supported by a frame 12 and includes a triggering device 14 having a pair of transmission rods 16 , 18 hinged on pivots 20 . The lower transmission rod 16 is mechanically connected to a switching rod 22 made of insulating material, which extends perpendicularly to the flange of the frame 12 . The switching lever 22, common to all poles, is formed by a shaft mounted rotatably between an open position and a closed position of the circuit breaker contact means. This circuit breaker is a high-strength type with high electrical strength.

[0020] At the level of each pole is mounted a connecting rod 24 connecting a crank 25 of the switching rod 22 to an insulating bracket 26 of the movable contact device 28 . In the closed position, the movable contact device 28 cooperates with the fixed contact device 30 and is connected to the first connecting piece 34 by a braid 32 . The fixed contact ...

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PUM

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Abstract

The circuit breaker pole or poles comprise a movable contact means with a support carrier movable with respect to the frame between an open position and a closed position and one or more contact fingers movable with respect to the support carrier between a contact position and a retracted position. Electromagnetic compensation means are designed to apply electromagnetic forces on the contact finger or fingers tending to keep the contact finger or fingers in contact with the stationary contact means. Electromagnetic limiting means are designed to apply electromagnetic forces on the contact finger or fingers tending to drive the finger or fingers to their retracted position. The electromagnetic compensation means and the electromagnetic limiting means are such that when the current intensity flowing in the movable contact means is under a threshold called the limiting threshold, the finger or fingers are kept in contact with the stationary contact means, and that above said threshold, the finger or fingers are driven to their retracted position. The resultant of the forces applied by the carrier on the kinematic connecting means when the current intensity flowing in the movable contact means reaches the limiting threshold is under the ultrafast opening threshold.

Description

technical field [0001] The invention relates to an operating mechanism for a high power strength low voltage multi-pole circuit breaker comprising a power circuit, each pole of the power circuit having a pair of compensating contact means held in a closed position by the power compensating effect of a repulsive force superior. Background technique [0002] The above-mentioned mechanism is described in the document EP-A-222645 filed by the applicant, comprising a trigger device connected to the trip hook and the opening spring, driving the movable contact to an open position when the hook moves from the loaded position to the trip position; an insulated A switching lever made of material connected to the triggering device, extending transversely to the frame and comprising a rotating shaft supporting the movable contact device of all poles; an opening pawl acting together with the trip hook to respectively Loading or tripping of the actuator in the locked or unlocked positio...

Claims

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Application Information

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IPC IPC(8): H01H73/02H01H9/44H01H77/10H01H83/02
CPCH01H2071/507H01H9/446H01H77/101
Inventor 马克·里瓦尔马克·布兰克费内克劳德·格雷利尔
Owner SCHNEIDER ELECTRIC IND SAS
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