Permanent magnetic contactor and control device thereof

A control device and contactor technology, applied in emergency protection circuit devices, relays, non-polar relays, etc., can solve problems such as power consumption, large working current, and wire package burning, and achieve strong breaking capacity, simple structure, and material saving. Effect

Inactive Publication Date: 2006-01-25
SOUTHEAST UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

During the power-on and pull-in period of the line package, on the one hand, it consumes electric energy. Due to the large operating current during operation, the electric energy is lost in the hysteresis, eddy current and short-circuit ring, and most of the active power consumption of the line package is lost as heat; on the other hand, The phenomenon of wire package burning will often occur
When the power supply voltage is too low, the electromagnetic force will be significantly reduced; when the AC current is zero, under the action of the return spring, the moving iron core of the contactor and the main contact will vibrate strongly, which will not only shorten the service life of the contactor, but also will affect the reliability of power supply

Method used

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  • Permanent magnetic contactor and control device thereof
  • Permanent magnetic contactor and control device thereof
  • Permanent magnetic contactor and control device thereof

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Embodiment Construction

[0017] The permanent magnet contactor of the present invention is composed of a moving iron core 1, a static iron core 4, a permanent magnetic steel 5, a wire wrap 3, a tower spring 2 and a control circuit, and is characterized in that: between the two static iron cores 4 A piece of permanent magnet steel 5 is provided, so that the two static iron cores 4 and one piece of permanent magnet steel 5 form a "U"-shaped whole. They are connected in series and have the same polarity direction; the tower spring 2 is supported on the skeleton of the wire package 3 ; the upper end of the tower spring 2 is connected to the moving iron core 1 . The moving iron core 1 and the static iron core 4 are made of ordinary electrical pure iron, and the permanent magnet steel 5 is made of NdFeB material with high magnetic energy product.

[0018] like figure 1 As shown in the figure, when the switch is closed, the coil passes through the forward current, which is consistent with the magnetic field...

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Abstract

A permanent magnetic contactor and its control device are used in starting switch control devices and engines and switching on and off the master circuit. A permanent magnetic steel is set between two static cores to form a U-like bulk, two iron cores connected in series and in a same polarity, a tower spring supports the framework of the packet, the top of the tower spring is connected with a dynamic core. The output over voltage protection part of said control device is connected with the rectification part, output of which is connected with a low-voltage judgment part the output of which is connected with a shut off executing part and the output of which is connected with the wire packet.

Description

technical field [0001] The invention relates to a permanent magnet contactor, which is used for switching equipment, control equipment and motor starting to perform closing and opening operations on a main circuit, and belongs to the technical field of contactor manufacturing. Background technique [0002] The traditional contactor is to generate a magnetic field by wrapping the electromagnetic wire to maintain the pull-in state of the contacts. During the power-on and pull-in period of the wire package, on the one hand, electric energy is consumed. Due to the large working current during operation, the electric energy is lost on the hysteresis, eddy current and short-circuit ring, and most of the active power consumption of the wire package is lost as heat; on the other hand, Burnout of the wire package often occurs. When the power supply voltage is too low, the electromagnetic force will be significantly reduced; when the alternating current crosses zero, under the action...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01H51/01H01H47/02H02H7/22
Inventor 林鹤云房淑华
Owner SOUTHEAST UNIV
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