A Contact System with High Voltage DC Arc Protection Structure

An arc protection, high-voltage DC technology, applied in circuits, relays, electrical components, etc., can solve the problems of low electrical life of contactors and limited improvement of electrical life of contactors, and achieve increased creepage distance, improved electrical life, and dielectric resistance. The effect of increasing the pressure level

Active Publication Date: 2020-11-03
BEIJING INST OF RADIO MEASUREMENT
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  • Abstract
  • Description
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Problems solved by technology

[0003] In order to improve the electrical life of the contactor, the usual methods include improving the ablation resistance of the contact, filling the atmosphere, and using magnetic blowouts, etc., but only using the above technical means has limited improvement in the electrical life of the contactor, especially when the contactor When energized in both directions, the magnetic blowout arc is almost ineffective, and the electrical life of the contactor is very low at this time

Method used

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  • A Contact System with High Voltage DC Arc Protection Structure
  • A Contact System with High Voltage DC Arc Protection Structure
  • A Contact System with High Voltage DC Arc Protection Structure

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Embodiment Construction

[0033] The principles and features of the present invention will be described below in conjunction with the accompanying drawings, and the examples given are only used to explain the present invention, and are not intended to limit the scope of the present invention.

[0034] Such as Figure 1-Figure 6 As shown, a contact system with a high-voltage DC arc protection structure in this embodiment includes a ceramic base 1, two static contacts 2, a moving contact 3 and a transmission rod 4, and the static contact 2 is installed on the On the ceramic seat 1, the moving contact 3 is in contact with the two static contacts 2 respectively; one end of the transmission rod 4 is fixedly connected with the moving contact 3, and the other end is used to receive power from the electromagnetic system Further, the moving contact 3 is driven to reciprocate in a straight line; the ceramic seat 1 is provided with a protective structure for cutting off the connection of the arc sputtering betwee...

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Abstract

The invention relates to a contact system with a high-voltage direct-current arc protection structure, comprising a ceramic seat, two static contacts, a movable contact and a transmission rod. The static contact is installed on the ceramic seat, and the movable contact is respectively in contact with the two static contacts. One end of the transmission rod is fixedly connected with the movable contact, and the other end is used for receiving power from the electromagnetic system and driving the movable contact to reciprocate linearly; The ceramic seat is provided with a protective structure for cutting off the connection of an arc sputtering object between two static contacts. The contact system of the invention can effectively prevent the connection of the electric arc sputtering objectsbetween the two static contacts by arranging a protective structure between the two static contacts on the ceramic base, increase the creepage distance, restrict the dielectric withstand voltage levelof the electric life index of the contactor to be improved, and accordingly improve the electric life of the contactor.

Description

technical field [0001] The invention relates to the technical field of electronic equipment, in particular to a contact system with a high-voltage DC arc protection structure. Background technique [0002] With the improvement of equipment automation and intelligence, contactors are gradually developing in the direction of high voltage and high current. The increase in voltage and current will inevitably increase the arc energy at the moment of contact on-off, making it more difficult to extinguish the arc; in addition, there is no zero-crossing point in the DC current, which makes it more difficult to extinguish the arc after the voltage and current increase, and the arcing time is longer . When arcing occurs, it is accompanied by evaporation and splashing. The splash produced by evaporation and splashing will reduce the dielectric withstand pressure of the contactor, which is an important reason for the failure of the contact system. [0003] In order to improve the ele...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01H50/02H01H50/54
CPCH01H50/02H01H50/54
Inventor 罗辉
Owner BEIJING INST OF RADIO MEASUREMENT
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