避雷器的工作原理及作用

The working principle and function of surge arrester 

避雷器是一种能释放雷电或兼能释放电力系统操作过电压能量，保护电工设备免受瞬时过电压危害，又能截断续流，不致引起系统接地短路的电器装置，是连接在导线和地之间的一种防止雷击的设备，通常与被保护设备并联。

Lightning arrester is a kind of energy release lightning or can release the power system operating overvoltage and energy, to protect electrical equipment from transient overvoltage hazard, and truncation stream, does not cause the system grounding short circuit of the electric devices, is one of the connection between the wire and to prevent lightning equipment, usually with the protection equipment in parallel. 

避雷器可以有效的保护电力设备，一旦出现不正常电压，避雷器产生作用，起到保护作用,当电压值正常后，避雷器又迅速恢复原状，以保证系统正常供电。

Lightning arrester can effectively protect the power equipment, once appear, abnormal voltage, lightning arrester, protection, when the voltage is normal, lightning arrester and rapid restorable, to ensure the normal power supply system. 

避雷器不仅可用来防护大气高电压，也可用来防护操作高电压。如果出现雷雨天气，电闪雷鸣就会出现高电压，电力设备就有可能有危险，此时避雷器就会起作用，保护电力设备免受损害。避雷器的最大作用也是最重要的作用就是限制过电压以保护电气设备。它是使雷电流流入大地，使电气设备不产生高压的一种装置，主要类型有管型 避雷器、阀型避雷器和氧化锌避雷器等。每种类型避雷器的主要工作原理是不同的，但是他们的工作实质是相同的，都是为了保护点了设备不受损害。

Surge arrester can be used for protective atmosphere of high voltage not only, also can be used for protection of high voltage operation. If there is a thunderstorm weather, thunder and lightning occurs, high voltage electricity equipment is potentially dangerous, the lightning arrester will play a role, to protect electrical equipment from damage. Arrester biggest role is also the most important role is to limit the overvoltage in order to protect the electrical equipment. It is to make the lightning current flowing into the earth, making a device does not produce high voltage electrical equipment, the main types are tube type lightning arrester, valve type lightning arrester and zinc oxide lightning arrester and so on. The main working principle of each type arrester is different, but their work is the same, the substance is to protect the ordered equipment from damage. 

避雷器具有良好的发展历史和趋势，在不断地完善和改进，在电力设备中产生重大作用。

Lightning arrester has good development history and trend, constantly perfect and improve, have a significant role in the electric power equipment.