surge protector

Abstract

The invention discloses a novel surge protector. The novel surge protector comprises a first electrode, a second electrode and a shell, wherein the shell is of a hollow structure, the first electrode and the second electrode are respectively and detachably connected with two ends of the shell, the first electrode comprises a connection part and a conduction part which are integratedly formed, the conduction part extends into the shell and is connected with the second electrode by a piezoresistor fixedly connected with the bottom, the conductive part comprises an extension electrode, a low-temperature hot melting fuse post and a diversion electrode, one end of the low-temperature hot melting fuse post is connected to the bottom of the extension electrode in a clamping way, and the other end of the low-temperature hot melting fuse post is connected with the diversion electrode in a clamping way. The novel surge protector is simple in structure and is convenient to use, the low-temperature hot melting fuse post is molten when a system exceeds a working temperature due to a fault of the piezoresistor of the surge protector, so that the extension electrode and the piezoresistor are disconnected to cause open circuit of the system, and the purpose of separating the device from the system is achieved.

Description

Technical field [0001] The invention relates to the field of lightning protection, in particular to a surge protector. Background technique [0002] Surge protector is also called lightning arrester or surge protector, abbreviation (SPD) is suitable for AC 50 / 60HZ, rated voltage to 380V power supply system or communication system, under normal conditions, it is in a high impedance state, and once When a line surges due to lightning strikes or other reasons, it will be turned on in a very short time, and the lightning current or overvoltage will be introduced into the earth through the grounding line to protect the equipment on the line; existing surge protectors The junction mostly uses a low-temperature tripping structure. The traditional surge protector of this structure has a mechanical tripping mechanism with a spring in series between the electrode and the varistor. This mechanism will be affected by the spring and the mechanical Unable to trip caused by structural toleranc...

AI Technical Summary

Problems solved by technology

[0002] Surge protector, also known as lightning arrester or surge protector, referred to as (SPD) is suitable for AC 50 / 60HZ, rated voltage up to 380V power supply system or communication system, under normal circumstances, it is in a high impedance state, and once When there is a surge in the line due to lightning strikes or other reasons, it will be turned on in a very short time, and the lightning current or overvoltage will be introduced into the ground through the grounding line to protect the equipment on the line; the existing surge protector Most junctions adopt a low-temperature tripping structure. The traditional surge protector of this structure has a mechanical tripping mechanism with a spring connected in series between the electrode and the varistor. Structural tolerance deviation makes it impossible to trip, which brings inconvenience to users

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