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Electromagnetically actuated switching device and method of controlling switching operation of said switching device

A technology of switching devices and control components, which is applied in the direction of power devices, circuits, relays, etc. inside the switch

Active Publication Date: 2016-12-14
ABB (SCHWEIZ) AG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0018] The above-mentioned drawbacks become even more severe when multiple switching operations (1000000 or so) are performed during the operating life of the switching device, as occurs when the switching device operates as an electrical contactor

Method used

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  • Electromagnetically actuated switching device and method of controlling switching operation of said switching device
  • Electromagnetically actuated switching device and method of controlling switching operation of said switching device
  • Electromagnetically actuated switching device and method of controlling switching operation of said switching device

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Embodiment Construction

[0046] Referring to the cited figures, the switching device according to the invention (indicated by reference numeral 1 ) comprises a fixed contact 12 and at least one movable contact 11 electrically connected to Phase conductors of distribution lines (not shown). The movable contact 11 and the fixed contact 12 are adapted to be coupled or uncoupled, respectively, during the switching operation of the switching device 1 .

[0047] The switching operation may be a closing operation, in which the contacts 11 and 12 are brought from the disconnected state to the coupled state, or an opening operation, in which the contacts 11 and 12 are brought from the coupled state brought to the disengaged state.

[0048] The switching device 1 includes an electromagnetic actuator 13 including an excitation coil 131 and a movable plunger 132 operatively coupled to the movable contact 11 by a kinematic chain 14 .

[0049] During the switching operation of the switching device, the excitation...

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PUM

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Abstract

The present disclosure relates to electromagnetically actuated switching devices and methods for controlling the switching operation of the switching devices. Specifically disclosed is a switching device (1), comprising: a fixed contact (12) and a movable contact (11); an electromagnetic actuator (13); a power supply part (16); and a control part (17). During the execution of the switching operation, the control part: sends a first control signal to the power supply part to start the supply of the excitation current from the first instant (T1); based on the information provided by the sensing signal, determines the second an instant (T2), at which the power supply part must stop the supply of said excitation current, the second instant occurs when said movable plunger is moving from said start position (P1) to its stop position (P2 ) before the stop position (P2) has been reached during the movement; a second control signal is sent to the power supply part to stop the supply of the excitation current from the second instant (T2) until the movable plunger reaches the stop position .

Description

technical field [0001] The present invention relates to an electromagnetically actuated switching device for low or medium voltage applications, such as circuit breakers, contactors, disconnectors, reclosers and the like. [0002] In a further aspect, the invention relates to a method for controlling the switching operation, ie the closing or opening operation of electrical contacts, of said switching device. Background technique [0003] For the purposes of the present invention, the terms low voltage (LV) or medium voltage (MV) designate voltages having values ​​below 1 kV and from 1 kV to tens of kV (eg 50 kV), respectively. [0004] As is known, LV or MV switching devices generally comprise a control unit and an actuating chain for coupling or decoupling electrical contacts during the switching operation of the switching device. [0005] The most traditional switching devices are generally of the mechanical type, ie provided with an actuating chain employing mechanical ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01H3/28
CPCH01H47/325
Inventor R·尤塞M·高蒂
Owner ABB (SCHWEIZ) AG