Novel surge protection device

A surge protector, a new type of technology, is applied in the direction of overcurrent protection, emergency protection circuit device, emergency protection circuit device for limiting overcurrent/overvoltage, etc. It can solve the problems of SPD protection blind zone, etc. Achieve enhanced reliability, high impedance

Inactive Publication Date: 2014-06-11
孙巍巍
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to effectively solve the problem of the protection blind zone of the existing overcurrent protection device for the SPD, the present invention proposes a safe and reliable new surge protector for the power supply system

Method used

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  • Novel surge protection device

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Embodiment Construction

[0014] Below in conjunction with accompanying drawing and embodiment the present invention is further described:

[0015] Such as figure 1 As shown, 1 is a breaking switch, 2 is a spring, 3 is a current sensor, 4 is a lightning protection component, 5 is a current resistor, 6 is a relay, 7 is a linkage mechanism, and 8 is a casing.

[0016] The invention is a surge protector used in a power electronic circuit system. The surge protector mainly includes a current sensor, a relay, a current resistor, a linkage mechanism, a lightning protection element and a breaking switch.

[0017] The current sensor (3) can detect the power frequency (low frequency) current above 3A flowing on the SPD path, and drive the relay (6) to conduct the bypass circuit. It has an inhibitory effect on the induction of high-frequency lightning current and will not drive the relay (6). The current sensor (3) can adopt silicon steel sheet as the iron core of the iron ring.

[0018] The choke (5) can be ...

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Abstract

The invention relates to a novel surge protection device. The novel surge protection device mainly comprises a current sensor, a relay, a current blocker, a linkage mechanism, a lightning protection element and a breaking switch. The lightning protection element is connected with the breaking switch in series, the current blocker works in cooperation with the current sensor and the relay, the breaking switch is controlled through a bypass, lightning surges can be discharged normally, power frequency currents of more than 3A can be switched off, and the novel surge protection device is safe and reliable. The novel surge protection device is convenient to mount, the dead zone of an existing SPD overcurrent protection mode is avoided, and high reliability is achieved.

Description

technical field [0001] The invention belongs to the technical field of surge protection for electronic and electric equipment. Background technique [0002] Lightning is a special weather phenomenon caused by the discharge of charged clouds in the air. Lightning is an important cause of damage to electronic equipment, which threatens the safe and stable operation of electronic information systems in various fields such as construction, railways, civil aviation, communications, industrial control, and military. Installing a surge protective device (SPD) on metal lines such as power lines, signal lines, and control lines connected to electronic equipment is one of the important measures for lightning protection. Surge protectors have been widely used in various fields and play an important role in lightning protection. The quality of its state directly affects its lightning protection effect, thus bringing hidden dangers to the safety of the protected equipment. [0003] Th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02H9/02H02H3/08
Inventor 孙巍巍
Owner 孙巍巍
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