Decoupling anti-lightning circuit and lightning protection connecting terminal

Abstract

The invention relates to a decoupling lightning protection circuit and a lightning protection terminal. The lightning protection circuit includes at least two stages of lightning protection units connected to the conductors of the main circuit, and a decoupling unit is arranged between adjacent lightning protection units. The decoupling unit is at least one magnetic ring, and the magnetic ring is sleeved on the The periphery of the conductor between the two lightning protection units. The connection terminal includes a connection terminal main body and a lightning protector detachably connected to the connection terminal main body. The main body of the connecting terminal includes an insulating shell, a wire inlet and a wire outlet respectively provided at two ends of the insulating shell, and a conductor connecting the wire inlet and the wire outlet. The lightning protection device can use the above-mentioned decoupling lightning protection circuit. By using the magnetic ring set on the periphery of the conductor, the decoupling between the two lightning protection units can be effectively realized when the lightning protection unit is working. The decoupling magnetic ring does not need to be electrically connected to the conductor, which reduces the electrical connection point, improving the reliability of the circuit.

Description

technical field [0001] The invention relates to a lightning protection device, more specifically, to a decoupling lightning protection circuit and a lightning protection terminal applying the lightning protection circuit. Background technique [0002] Lightning is a physical phenomenon that often occurs in nature. It usually refers to the discharge phenomenon of charged clouds to the earth. If electronic equipment is struck by lightning, the internal circuit will generate instantaneous overvoltage or overcurrent, which will affect the electronic equipment at least Performance, serious damage to electronic equipment will be irreversible. Therefore, in the design of electronic equipment, lightning protection design technology is usually used to reduce the impact of lightning on electronic equipment. [0003] In order to achieve a good lightning protection effect, it is generally necessary to design two or more levels of lightning protection units, and the lightning is dischar...

AI Technical Summary

Problems solved by technology

The decoupler with this structure has at least the following disadvantages: 1. The selection of the decoupler must meet the load power requirements, that is, the maximum operating current requirement. If the load increases after the lightning protection project is implemented, the decoupler should also be replaced.

2. The decoupler is a device added to the circuit, which increases the electrical connection point, that is, increases the hidden danger of electrical failure

3. The quality of the decoupler itself has a great influence on the main circuit. When higher circuit performance is required, a high-quality decoupler needs to be selected, which increases the cost

Therefore, the size of the terminal block is larger, which increases the difficulty of its design

At the same time, in order to achieve a good lightning protection effect, two or more levels of lightning protection units are often required, so it is necessary to set a decoupler between the two levels of lightning protection units. The decoupler generally uses an inductive coil or a resistor, etc. , connected in series on the line of the terminal block, increasing the electrical connection point, thus increasing the hidden danger of electrical failure

Images