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Surge protection device and system

A surge protection, surge protector technology, applied in emergency protection circuit devices, circuit devices, emergency protection circuit devices for limiting overcurrent/overvoltage, etc., can solve the problems affecting surge protectors, surge protection It can avoid the problems of high trigger voltage and low reliability of arc extinguishing, so as to avoid arc extinguishing failure, improve stability and avoid arc extinguishing failure.

Pending Publication Date: 2019-03-22
XIAMEN SET ELECTRONICS
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  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

Under the impact of lightning impulse current, the capacitor in the trigger circuit will be charged with charge during the triggering process and cannot be discharged in time, so the residual charge will affect the next triggering of the surge protector, resulting in the triggering of the surge protector The voltage rises and the voltage protection level is unstable
[0007] To sum up, the existing surge protection devices have the problems of low arc extinguishing reliability and unstable voltage protection level

Method used

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  • Surge protection device and system
  • Surge protection device and system
  • Surge protection device and system

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Embodiment Construction

[0033] In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. However, the present invention can be implemented in many other ways different from this description, and those skilled in the art can make similar extensions without violating the connotation of the present invention, so the present invention is not limited by the specific embodiments disclosed below.

[0034] The technical solution of the present invention will be clearly and completely described below in combination with specific embodiments and accompanying drawings.

[0035] Please see attached figure 2 , is a structural schematic diagram of an embodiment of a surge protection device of the present invention.

[0036] The surge protection device includes: a first switch type surge protector PG, a second switch type surge protector SG and an impedance device SI; the second switch type surge protector SG and the first switch t...

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Abstract

The invention discloses a surge protection device and a surge protection system. The surge protection device comprises a first switch type surge protector, a second switch type surge protector and animpedance device, wherein the second switch type surge protector and the first switch type surge protector are connected in series to form a discharge channel of a lightning surge current, the impedance device is connected in parallel with the first switch type surge protector so as to limit an amplitude value of a freewheeling current of the first switch type surge protector, and the impedance device and the second switch type surge protector form a discharge channel of the freewheeling current. By adopting the surge protection device and the surge protection system disclosed by the invention, the arc extinguishing failure can be effectively avoided, and the stability of voltage protection can be improved.

Description

technical field [0001] The invention relates to the technical field of overvoltage protection, in particular to a surge protection device and system. Background technique [0002] Surge protection device is an overvoltage protection device connected to electronic equipment or low-voltage power distribution system, which is mainly used to discharge surge current caused by lightning current, lightning induction and switching operation, and limit the magnitude of overvoltage , so as to avoid surge current damage to other equipment in the circuit. [0003] In order to improve the ability of the surge protection device to discharge the surge current, it is usually necessary to use the simulated lightning impulse current (the impulse current waveform is 10 / 350us) in accordance with the IEC 61643-11 standard or the GB / T 18802.1 standard for installation in the LPZ0 area (Lightning Protection Zone, Lightning Protection Zone, referred to as LPZ) and the surge protector between the L...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02H9/04H02H9/06
CPCH02H9/041H02H9/06
Inventor 张祥贵曹安平
Owner XIAMEN SET ELECTRONICS
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