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Electromagnetic under-voltage release and controlling method thereof

An undervoltage release and electromagnetic technology, which is applied in the field of undervoltage tripping, can solve problems such as complex circuits, high coil heat generation, and small starting torque of the undervoltage release, achieving small operating current, large starting torque, The effect of streamlined and ingenious circuit structure

Active Publication Date: 2014-03-19
JIANGSU GUOXING ELECTRIC EQUIP
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is: In order to solve the common problems of high coil heat generation, small starting torque of undervoltage release and too complicated circuit in the existing electromagnetic undervoltage release, the present invention provides an electromagnetic type Undervoltage release and its control method to solve the above problems

Method used

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  • Electromagnetic under-voltage release and controlling method thereof
  • Electromagnetic under-voltage release and controlling method thereof

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Embodiment Construction

[0028] The present invention is described in further detail now in conjunction with accompanying drawing. These drawings are all simplified schematic diagrams, which only illustrate the basic structure of the present invention in a schematic manner, so they only show the configurations related to the present invention.

[0029] Such as Figure 1~5 As shown, the present invention provides an electromagnetic undervoltage release, which includes a filter rectifier circuit, a sampling circuit, a power supply circuit, a control module, a drive module and an electromagnet. The input terminal of the filter rectifier circuit is connected to the grid voltage and the output terminal Output the DC voltage VH, the DC voltage VH is connected to the power supply circuit and the sampling circuit, the power supply circuit outputs the first working voltage VCC1 to the control module and the driving module, outputs the second working voltage VCC2 to the driving module, and the sampling circuit wh...

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Abstract

The invention provides an electromagnetic under-voltage release comprising a filtering rectifying circuit, a sampling circuit, a power supply circuit, a control module, a driver module and an electromagnet. A direct-current resistance of a starting winding is less than a direct-current resistance of a working winding. According to the electromagnetic under-voltage release and the controlling method thereof, a microcomputer is used for controlling the control circuit, and the controlling thinking is clear and the circuit structure is simplified and ingenious. The starting winding-working winding dual-coil electromagnet is arranged at the circuit, and the direct-current resistance of the starting winding is less than the direct-current resistance of the working winding and the working current of the starting winding is high and the starting torque is large, so that the pull-in performance of the electromagnet can be ensured. And the working current of the working winding is low and thus the basic power for pull-in maintaining of the electromagnet is provided, so that the heating value is extremely low.

Description

technical field [0001] The invention relates to the technical field of undervoltage release, in particular to an electromagnetic undervoltage release and a control method thereof. Background technique [0002] The undervoltage release is one of the important components of circuit breakers, especially frame circuit breakers. The undervoltage release is a release that makes the circuit breaker disconnect with or without delay when its terminal voltage drops to a certain range. When the power supply voltage drops, it even slowly drops to the rated working voltage. Within the range of 70% to 35% of the release, the undervoltage release should operate. When the power supply voltage of the undervoltage release is equal to 35% of the rated operating voltage of the release, the undervoltage release should be able to prevent the circuit breaker from fully closing. The coil of the release is de-energized, and the movable armature in the coil is ejected by the return spring—tripping; ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02H3/24
Inventor 吴志祥李春鸿黄波蒋文贤
Owner JIANGSU GUOXING ELECTRIC EQUIP
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