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Method of monitoring the position of a movable part of an electrical switch apparatus

A technology of moving parts, switching electrical appliances, applied in the field of positional devices, which can solve the problems of expensive installation, Hall effect sensors are susceptible to interference and external influences

Inactive Publication Date: 2009-06-24
SCHNEIDER ELECTRIC IND SAS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In this type of setup, Hall effect sensors can be susceptible to disturbances and external influences when another magnet approaches the sensor
This resulting change in magnetic flux can cause unintentional activation of the alarm when the breaker lever is not in the actuated position
In addition, it requires the installation of expensive and complex electronics to measure changes in magnetic flux

Method used

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  • Method of monitoring the position of a movable part of an electrical switch apparatus
  • Method of monitoring the position of a movable part of an electrical switch apparatus
  • Method of monitoring the position of a movable part of an electrical switch apparatus

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Embodiment Construction

[0035] The device according to the invention is used for monitoring the position of moving parts of switching devices.

[0036] More specifically, the switching device is a disconnecting device, such as a switch, a fuse holder or a circuit breaker 1 , more specifically a miniature circuit breaker. In known manner, the circuit breaker 1 comprises a housing 10 on which is mounted a movable part comprising a pivoting or rotating lever 11 . The lever 11 can be set to move between at least two positions, an open (M) position and an closed (A) position. Movement between the open (M) and closed (A) positions can be performed in a user-desired manner or in an automatic manner when an electrical fault such as a short circuit is detected. Some circuit breakers 1' are available with three positions, the middle position (S) of the lever is located halfway between the open (M) position and the closed (A) position to signal an electrical fault or to indicate fusing of the contacts ( Figu...

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Abstract

The invention relates to a device for monitoring the position of a movable part (11) mounted on a casing (10) of an electrical switch apparatus (1), said movable part (11) being able to take at least two determined positions (M, A). The device comprises a permanent magnet (60, 62) and a reader (4) furnished with an antenna (40) for contactless exchange of data by electromagnetic coupling with a receiver element (5, 5a, 5b) associated with the electrical switch apparatus. The receiver element (5, 5a, 5b) comprises an antenna (50) controlled by a microswitch (2) switched between two states as a function of the position of the movable part (11), so as to make or break the electromagnetic coupling between the reader (4) and the receiver element (5, 5a, 5b).

Description

technical field [0001] The invention relates to a device for monitoring the position of movable parts of switching devices. The movable part is eg a lever of a circuit breaker, eg a miniature circuit breaker. The invention also relates to a panel capable of receiving multiple switching devices such as circuit breakers provided with the monitoring device of the invention. Background technique [0002] From US 4,706,073 a circuit breaker is known which is provided with an alarm circuit which is activated in the event of a current overload. A permanent magnet is mounted on the pole of the circuit breaker, while a sensor of the Hall effect type is used to measure the change in magnetic flux during the change of position of the pole. When an electrical fault trips, the movement of the permanent magnet causes a change in the magnetic flux sensed by the Hall effect sensor. According to this change, the detector is able to generate an output signal indicative of an alarm. [000...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01H9/16
CPCH01H2050/007H01H71/04H01H2036/0093H01H9/168H01H9/167H01H71/0271H01H36/008H01H2071/046H01H71/52H01H2071/048H01H36/0006
Inventor 马克·布鲁尔马赛厄斯·拉米恩西尔万·佩尼厄法布里斯·鲁德特
Owner SCHNEIDER ELECTRIC IND SAS
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