Multifunctional DC power supply lightning protection module

Abstract

The invention discloses a multifunctional DC power supply lightning protection module, which relates to a power supply lightning protection module. The structure of this module is that the small hole at the upper end of the push rod, the spring and the small hole at the upper right corner of the movement are connected and fixed in sequence, the shaft hole at the lower end of the push rod is fixed on the straight shaft at the lower left of the movement, and the push rod in the middle of the push rod is pushed against the The middle part of the long arm of the shrapnel; one end of the long connecting piece is connected to the V+ of the power cord, and the other end of the long connecting piece is connected to the shrapnel; one end of the short connecting piece is connected to the V- of the power cord, and the other end of the short connecting piece is respectively connected to the non- The linear element is connected to one end of the fuse; the other end of the nonlinear element is connected to the top of the long arm of the shrapnel with low-temperature solder to form a low-temperature solder trip point, and the other end of the fuse is connected to the contact; the contact is located at the lower right corner of the movement, 6mm away from the low temperature solder trip point. The invention solves the problem that the DC power supply lightning protection module fails to be intermittent, reduces power safety accidents caused by the DC power supply lightning protection module, and enhances reliability and protection effect.

Description

technical field [0001] The invention relates to a power supply lightning protection module, in particular to a multifunctional direct current power supply lightning protection module. Background technique [0002] Requirements for the lightning protection module of the DC power supply: When the performance of the nonlinear component deteriorates and fails, it must be automatically disconnected from the power supply, and there is no arcing and freewheeling at the tripping point, and a warning indication of deterioration is issued to ensure safety when the DC lightning protection module fails It is separated from the DC power supply system, so that the DC power supply can work normally, and it is convenient for maintenance personnel to replace it in time, otherwise it will cause a fire due to continuous arc generation. [0003] At present, the structure of the commonly used DC lightning protection module is basically replaced by the structure of the AC lightning protection mod...

AI Technical Summary

Problems solved by technology

Since the AC has a zero-crossing point, it is easy to realize the discontinuous flow when tripping; while the DC has no zero-crossing point, if the same structure as the AC lightning protection module is used, there must be a problem that the discontinuous flow cannot be achieved.

[0004] CN201220076640 discloses a DC lightning protection device used in power systems, which mainly solves the leakage current problem of non-linear components, but cannot solve the arcing and intermittent current problems after tripping

[0005] CN201420382396 discloses a wide voltage AC and DC power surge protector with large current capacity and low residual voltage, which uses 1-100A overcurrent fuse or temperature fuse as failure protection, and there is a small rated current overcurrent The fuse or temperature fuse cannot guarantee the lightning strike current requirement; the overcurrent fuse or temperature fuse with a large rated current cannot be fused in time when the lightning protector fails, which may easily cause a fire

[0006] CN 201320748676 discloses a DC lightning protection module for LED lighting equipment. Its failure protection relies on the installation of temperature-safe varistors and series-connected blown fuses. There are overcurrent fuses or temperature fuses with small rated currents that cannot guarantee The demand for lightning current flow; the overcurrent fuse or temperature fuse with a large rated current cannot be fused in time when the lightning arrester fails, which may easily cause a fire

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