Two-in-one lightning arrester with voltage conversion function

Abstract

The invention discloses a two-in-one lightning arrester with a voltage conversion function. The lightning arrester comprises a power input end L, an inductor 1, a 220V-12VDC power supply module, a power output L', a power input end N, an inductor 2, a power supply output N', a 20kA voltage-sensitive resistor 1, a 20kA voltage-sensitive resistor 2, a discharge tube 1, a 5kA voltage-sensitive resistor 3, a 5kA voltage-sensitive resistor 4, a discharging tube 2, a grounding wire, a network IN, a discharging tube 3, a discharging tube 4, a resistor 1, a resistor 2, a resistor 3, a resistor 4, a VTS module and a network OUT; a primary lightning protection circuit is designed between the power input end and the inductor; and a secondary lightning arrester is designed between the 220V-12VDC powersupply module and the power output end. According to the two-in-one lightning arrester, a 220V voltage required by power supply of a power supply and a voltage 12DVC required by the network are fusedto a component, primary lightning protection is designed before the 220V voltage, and secondary lightning protection is designed after the 12DVC, so that the lightning protection effect is better, the intermediate wiring link is removed, and the connection is more reliable.

Description

technical field [0001] The invention belongs to the technical field of network lightning protection, in particular to a two-in-one lightning protection device with voltage conversion function. Background technique [0002] In thunderstorm weather, due to the electromagnetic induction of lightning, the metal cable will often induce lightning overvoltage, and the lightning overvoltage will be transmitted along the metal cable and transmitted to the terminal network card and other network interface devices. The phenomenon of lightning damage occurs, and the existing two-in-one lightning protection device for power supply network usually installs a first-level lightning protection at the front 220V, or installs a first-level lightning protection at the back of 12VDC. The lightning device is two independent products, the wiring is heavy, and the lightning protection effect has too much residual voltage. Contents of the invention [0003] The purpose of the present invention is...

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Problems solved by technology

[0002] In thunderstorm weather, due to the electromagnetic induction of lightning, the metal cable will often induce lightning overvoltage, and the lightning overvoltage will be transmitted along the metal cable and transmitted to the terminal network card and other network interface devices. The phenomenon of lightning damage occurs, and the existing two-in-one lightning protection device for power supply network usually installs a first-level lightning protection at the front 220V, or installs a first-level lightning protection at the back of 12VDC. The lightning device is two independent products, the wiring is heavy, and the lightning protection effect has too much residual voltage

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