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Lightning protection device

A technology of equipment and lightning current, which is applied in the field of lightning protection equipment, can solve problems such as the inability of lightning current to be introduced into the ground, the small grounding resistance value of the grounding grid, and damage to the protected equipment, so as to shorten the construction period, reduce requirements, and reduce construction costs. Effect

Inactive Publication Date: 2013-11-13
SHENZHEN YZ TECH
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Problems solved by technology

[0005] The embodiment of the present invention provides a lightning protection device, which aims to solve the problem that the grounding network of the existing lightning protection device cannot reach a small grounding resistance value, and some lightning currents cannot be introduced into the ground, causing damage to the protected device

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Embodiment Construction

[0013] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0014] The embodiment of the present invention cuts off the propagation channel of the lightning current through a device that has a blocking effect on the lightning current, thereby forcing the lightning current to discharge to the ground through the surge protector, avoiding the introduction of the lightning current through the propagation channel, and greatly It improves the probability of the equipment from being struck by lightning.

[0015] Such as figure 1 As shown, the lightning protection device provided by the embodiment of the present invention includes a lightning current band-stop fil...

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Abstract

The present invention is applicable to the field of lightning protection, and provides a lightning protection device. The lightning protection device comprises: a lightning current band-stop filter, connected to a front end of a protected device; a first-stage surge protective device, connected in parallel with the lightning current band-stop filter and the protected device; and a second-stage surge protective device, connected in parallel with the protected device, the first-stage surge protective device and the second-stage surge protective device both being connected to a grounding net. The lightning protection device of the present invention discharges the lightning current to the ground twice, which blocks a transmission channel of the lightning current, significantly reduces the lightning-strike probability of the protected device, and greatly lowers the requirement for the grounding resistance, so that a grounding net with a large resistance can be used, the construction cost of the grounding net is greatly reduced, and the construction cycle of the grounding net is greatly shortened.

Description

technical field [0001] The invention belongs to the field of lightning protection, in particular to a lightning protection device. Background technique [0002] At present, the general lightning protection method is to use a surge protector (Surge Protective Device, SPD) in conjunction with a grounding grid with a small grounding resistance, in addition to the direct lightning grounding of the lightning rod, and connect the surge protector in parallel between the equipment to be protected and the between ground grids. Since the surge protector device has the characteristics of instantaneous short circuit when the overvoltage occurs, the lightning current entering the protected system can be introduced into the grounding network through the surge protector, so as to realize the neutralization and dissipation of lightning charges, which is equivalent to the protection The device is short-circuited to protect the load system. [0003] Existing lightning protection methods req...

Claims

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Application Information

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IPC IPC(8): H02H9/04
CPCH02H1/04H02H9/041
Inventor 张庭炎栾海元
Owner SHENZHEN YZ TECH
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