Equipotential lightning protection device

Abstract

The invention discloses an equipotential lightning protection device. The equipotential lightning protection device comprises a surge suppression circuit, a lightning protection circuit, a surge energy absorbing circuit, an isolation protection circuit and an EMI protection circuit, wherein the surge suppression circuit, the lightning protection circuit, the surge energy absorbing circuit, the isolation protection circuit and the EMI protection circuit are sequentially connected in series. The lightning protection circuit comprises a first inductor and a second inductor which are connected in series, a plurality of gap discharging tubes are connected between the input end of the first inductor and the grounding ends of the circuits in series, voltage-limiting components are connected between the output end of the first inductor and the grounding ends of the circuits in series, and voltage-limiting components are connected between the output end of the second inductor and the grounding ends of the circuits in series. The equipotential lightning protection device is good in lightning protection effect, and implementation is convenient.

Description

technical field [0001] The invention relates to the technical field of lightning protection, and more specifically relates to an equipotential lightning protection device. Background technique [0002] For thousands of years, human beings have mainly protected against lightning with two major protection methods: one is insulation lightning protection, insulation lightning protection, and insulation lightning protection. An example is that a large number of relics of ancient buildings are built on foundations with excellent insulation. If it is damaged by lightning, this is the insulation lightning protection method; the other is to lead lightning into the ground. Lightning rods, lightning protection belts, and lightning protection nets for direct lightning protection are typical ways to lead lightning into the ground. Power surge protectors for induction lightning 1. The general idea of ​​the signal lightning protection device is to discharge the lightning current into the g...

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Problems solved by technology

[0006] Leading lightning into the ground is the main idea and protection method of lightning protection in today's world. The direct lightning strike on the building and the induction lightning on the line pass through the lightning arrester, and the lightning arrester is discharged into the ground. The ground grid that meets the lightning protection requirements, the power surge protector generally requires the grounding resistance to be less than 10 ohms, and the signal lightning protection product generally requires the grounding resistance to be less than 4 ohms. Making lightning protection grounding grids is often an important part of the project, and it is also expensive On the one hand, to achieve the required grounding resistance of the ground grid, the cycle is long, the cost is large, the amount of engineering is large, and the professionalism is strong. These are important reasons why it is difficult for ordinary families, vast rural areas, and remote mountainous areas to install lightning protection devices in every household.

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