| 避雷器按其发展的先后分为什么 |
| 添加时间：2017/5/26 17:48:30 浏览次数： |
| 避雷器按其发展的先后可分为：保护间隙——是最简单形式的避雷器，保护两个电力设备；管型避雷器——也是一个保护间隙，但它能在放电后自行灭弧，回复到原有的状态，不受电流的冲击；阀型避雷器——是将单个放电间隙分成许多短的串联间隙，同时增加了非线性电阻，提高了保护性能；磁吹避雷器——利用了磁吹式火花间隙，提高了灭弧能力，同时还具有限制内部过电压能力；氧化锌避雷器——利用了氧化锌阀片理想的伏安特性（非线性极高，即在大电流时呈低电阻特性，限制了避雷器上的电压，在正常工频电压下呈高电阻特性），具有无间隙、无续流残压低等优点，也能限制内部过电压，被广泛使用。 The lightning arrester can be divided into two types: protective clearance, the simplest form of lightning arrester, and the protection of two electrical equipment. A tube arrester -- also a protective clearance, but it can extinguish the arc after discharge and return to its original state without being hit by the current. Valve type arrestor - a series of short series interstitial space between individual discharge gaps, and the addition of nonlinear resistance to improve protection performance. Magnetic blow-out arrester - the use of the magnetic blow-spark gap to improve the ability to extinguish the arc, and also have the ability to limit the internal overvoltage. Zinc oxide lightning arrester, takes advantage of the volt-ampere characteristics of zinc oxide valve ideal (high nonlinear, namely in the large current when the features of low resistance limits the voltage on the lightning arrester, under normal power frequency voltage is of high resistance), with no gap, no stream the advantages of low residual, can also limit internal overvoltage, are widely used. |
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