保定电气厂家价格-交流无间隙金属氧化物避雷器

金属氧化物避雷器的主要特点

The main features of the metal oxide arrester

1、保护特性优异

1. Excellent protection characteristics

金属氧化物避雷器是用来保护电力系统中各种电气设备免受过电压损坏的电气产品，由于金属氧化物电阻片具有十分良好的非线性伏安特性，在正常工作电压下仅有微安级的电流通过，因而可将金属氧化物避雷器设计为无间隙结构，这就使金属氧化物避雷器具备了尺寸小、重量轻、保护性能好的特征，当过电压侵入时，流过金属氧化物电阻片的电流速度迅速增大，同时限制了过电压的幅值，释放了过电压的能量，此后金属氧化物电阻片又恢复高阻状态，使电力系统正常工作。

Metal oxide surge arresters are used to protect power system in various electrical equipment from over voltage damage because of electrical products, metal oxide varistors with nonlinear volt ampere characteristics of very good, the current only microampere level under normal operating voltage, thus it can be designed for metal oxide arrester without gap structure, which makes the metal oxide arrester device has small size, light weight, good performance of protection features, when overvoltage when the intrusion of current velocity through the metallic oxide resistor increases rapidly, while limiting the amplitude of overvoltage and overvoltage release energy, then the metal oxide varistors and recovery of high resistance state, so that the power system normal work.

2、通流能力大

2. Large flow ability

金属氧化物避雷器的通流能力表示避雷器具有吸收各种雷电过电压、操作过电压、能量的能力。本公司生产的金属氧化物避雷器的通流能力完全符合甚至高于国家标准的要求。4/10μs大电流冲击耐受能力、2ms方波通能量、线路放电等级、等指标均达到了国内领先水平。

The flow capacity of the metal oxide arrester indicates that the arrester has the ability to absorb all kinds of lightning overvoltage, operation overvoltage and energy. The flow capacity of the metal oxide arrester produced by the company is fully conformed to the requirements of the national standard. 4/10 Mu s high current impact tolerance, 2ms square wave energy, line discharge grade, and other indicators have reached the leading level in China.

3、工频耐受能力强

3. Strong power frequency tolerance

电力系统中由于各种原因，如单相接地，长线电容效应以及甩负荷等，会引起工频电压的升高或产生幅值较高的暂态过电压，因此避雷器具有在一定时间内承受一定程度工频电压升高能力，这就是避雷器的工频过电压耐受时间特性。

Due to various reasons such as power system, single phase capacitor, long-term effect and load rejection, will cause voltage rise or produce higher amplitude transient overvoltage, therefore arrester with power frequency voltage withstand a certain degree in a certain period of time to increase ability, this is the frequency of lightning arrester overvoltage tolerance time characteristic.