Surge protector

Abstract

The utility model relates to the technical field of electric power systems and equipment, and discloses a surge protector, which comprises a shell main body, a high-voltage electrode is connected inside the shell main body, a zinc oxide valve plate is connected to an output end below the high-voltage electrode, and a grounding lead is connected to the lower end of the zinc oxide valve plate. The utility model has the advantages that by adopting the zinc oxide valve plate, the nonlinear characteristic is improved, the through-flow capacity is increased, high-power surge can be better processed, normal leakage current is reduced, residual voltage is reduced, the response time to instantaneous overvoltage is short, the response speed is improved, no follow current exists, and the working efficiency is effectively improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to power system and equipment technical field, specifically point to a kind of surge protector. BACKGROUND

[0002] Surge protector, also known as lightning protection device, is an electronic device for providing safety protection for electronic devices, instruments, communication lines and the like. Its main function is to prevent the sudden peak current or voltage in the electrical circuit or communication line due to external interference from damaging the equipment. Specifically, the surge protector can conduct and shunt in a very short time, thereby avoiding damage to other equipment in the circuit by the surge. This protection is applicable to AC 50 / 60HZ, rated voltage 220V / 380V power supply system, and can protect against indirect lightning, direct lightning influence or other transient overvoltage surges. The application scenarios of the surge protector are wide, including residential homes, tertiary industries and industrial fields. The installation of the surge protector, the suppression of surges and transient overvoltage on the line and the discharge of overcurrent on the line become one of the important links of modern lightning protection technology.

[0003] However, the applicant found that the existing surge protector has a slow response speed and cannot handle high-power surges, which affects work efficiency. Therefore, the utility model provides a surge protector. UTILITY MODEL CONTENT

[0004] The utility model aims to provide a kind of surge protector, the connection of high voltage electrode and zinc oxide valve piece is realized by welding or plug-in mode, can improve the reliability and stability of connection, ensure that surge protector can continuously and effectively work under high voltage, improve the nonlinear characteristic by adopting zinc oxide valve piece, increase the through-flow capacity, can better handle high-power surges, reduce normal leakage current, reduce residual voltage, while the response time of transient overvoltage is fast, improve the response speed, no freewheeling, effectively improve work efficiency.

[0005] To achieve the above utility model purposes, the technical scheme provided by the utility model is as follows: a surge protector, comprising a housing main body, a high voltage electrode is connected inside the housing main body, a zinc oxide valve piece is connected to the output end below the high voltage electrode, and a grounding wire is connected to the lower end of the zinc oxide valve piece.

[0006] Further, the high voltage electrode is connected to the zinc oxide valve piece by welding or plug-in mode.

[0007] Further, the zinc oxide valve piece is a metal oxide semiconductor nonlinear resistor with zinc oxide as the main component, and its working principle is equivalent to the series and parallel connection of multiple semiconductor P-N junctions.

[0008] Further, the grounding wire is connected to the grounding end of the zinc oxide valve piece.

[0009] The utility model discloses a kind of surge protectors, including shell main body 1, shell main body 1 inside connection has high voltage electrode 2, high voltage electrode 2 lower output end connection has zinc oxide valve sheet 3, zinc oxide valve sheet 3 lower end connection has ground wire 4. BRIEF DESCRIPTION OF DRAWINGS

[0010] BRIEF DESCRIPTION OF DRAWINGS Figure 1 It is a kind of surge protector main body structure schematic diagram of the utility model.

[0011] As shown in the figure: 1, shell main body;2, high voltage electrode;3, zinc oxide valve sheet;4, ground wire. DETAILED DESCRIPTION

[0012] In order to make the content of the utility model more easily be clearly understood, the technical scheme in the utility model embodiment will be clearly and completely described below in conjunction with the drawings in the utility model embodiment. Wherein same parts are expressed with same drawing marks. It needs to be explained that, the words "front", "back", "left", "right", "up" and "down" used in the following description refer to the direction in the drawing, and the words "inner" and "outer" refer to the direction towards or away from the geometric center of a particular component.

[0013] BRIEF DESCRIPTION OF DRAWINGS Figure 1 A kind of surge protector, including shell main body 1, shell main body 1 inside connection has high voltage electrode 2, high voltage electrode 2 lower output end connection has zinc oxide valve sheet 3, zinc oxide valve sheet 3 lower end connection has ground wire 4. Further high voltage electrode 2 is connected with zinc oxide valve sheet 3 by welding or plug-in mode, high voltage electrode 2 is sent to zinc oxide valve sheet 3 by receiving external surge, zinc oxide valve sheet 3 suppresses surge and transient overvoltage on line.

[0014] Further zinc oxide valve sheet 3 is metal oxide semiconductor non-linear resistance with zinc oxide as main component, its working principle is equivalent to multiple semiconductor P-N series and parallel connection, can effectively improve the non-linear characteristic, increase through-flow capacity, can better handle high-power surge, make normal leakage current reduce, residual voltage reduce, while transient overvoltage response time is fast, improve response speed, no freewheeling, effectively improve work efficiency.

[0015] Further ground wire 4 is connected with the ground end of zinc oxide valve sheet 3, and surge current flows into ground wire 4 through zinc oxide valve sheet 3.

[0016] The specific implementation manner of the utility model discloses: first, high voltage electrode 2 is sent to zinc oxide valve sheet 3 on the outside through receiving the surge, zinc oxide valve sheet 3 inhibits the surge and transient overvoltage on line, and the surge current flows into ground wire 4 through zinc oxide valve sheet 3, wherein zinc oxide valve sheet 3 is the metal oxide semiconductor non-linear resistance with zinc oxide as the main component, can effectively improve the non-linear characteristic, increase the through-flow capacity, can better handle high-power surge, make normal leakage current reduce, residual voltage reduce, simultaneously to transient overvoltage response time fast, improve the response speed, no freewheeling.

[0017] The above merely describes the preferred embodiments of the utility model patent and is not intended to limit the utility model patent, and any modification, equivalent replacement and improvement made within the spirit and principle of the utility model patent shall be included in the protection scope of the utility model patent.

Claims

1. A surge protector comprising a housing body (1), characterized in that, The high-voltage electrode (2) is connected inside the shell body (1), and the lower output end of the high-voltage electrode (2) is connected with a zinc oxide valve sheet (3), and the lower end of the zinc oxide valve sheet (3) is connected with a grounding wire (4).

2. A surge protector according to claim 1, wherein, The high-voltage electrode (2) is connected with the zinc oxide valve sheet (3) by welding or plugging.

3. A surge protector according to claim 1, wherein, The zinc oxide valve sheet (3) is a metal oxide semiconductor nonlinear resistor with zinc oxide as the main component, and its working principle is equivalent to the series-parallel connection of multiple semiconductor P-N.

4. The surge protector of claim 1, wherein, The grounding wire (4) is connected with the grounding end of the zinc oxide valve sheet (3).

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