介绍了一种新型MOA(金属氧化物避雷器)泄漏电流测试仪的研制。
A new model of leakage current tester of MOA (metal oxide arrester) is introduced.
根据各设备上的过电压数值提出了相应的金属氧化物避雷器保护方案。
According to the over - voltage values on the above equipment, the protective scheme adopting mental oxide arrestor (MOA) are correspondingly presented.
给出了RY C型串联间隙并联电阻器在金属氧化物避雷器中的应用情况。
Also the status of RYC Series gaps parallel resistor in application of MOA is described.
研制了一种由高压穿刺电极和避雷器本体构成的纯空气间隙金属氧化物避雷器。
A new electrode and metal oxide surge arrester (MOA) with series air gap is developed, the gap is a pure air one and is composed by high voltage piercing electrode and MOA in itself.
最广泛运用的金属氧化物避雷器（ MOA ）具有优良的电压-电流非线性特性。
The wide - spread gapless MOAs have an excellent non - linear current - voltage characteristic.
金属氧化物避雷器作为电力系统过电压保护的主要电器，其保护特性非线性电阻片的残压决定。
As the main appliance for overvoltage protection in electric system, the characteristic of Metal Oxide Surge Arresters (MOA) is decided by the unit residual voltage of non linear resistance.
介绍了复合外套金属氧化物避雷器起痕和电蚀试验方法，针对试验中出现的主要问题作了简要分析；
This article introduces the test for tracking and erosion of polymeric housed metal oxide arresters is described Some phenomena in the test have been analysed.
分析认为，与相对成熟的交流金属氧化物避雷器相比，直流金属氧化物避雷器的研究和试验较复杂。
Based on analysis it is considered that the development and test of HVDC MOA are very complex in contrast with relatively maturation HVAC MOA.
论述了新式肘型金属氧化物避雷器在组合式变压器中应用时应该注意的参数选择、装、用和维护等问题。
The parameter selection installation application and maintenance in application of a new elbow type metal oxide arrester to composite transformers are discussed.
给出了采用过零法和谐波分析法相结合来精确测量金属氧化物避雷器（MOA）阻性电流基波的新算法。
A new method be gived to measure MOA′s resistive fundamental harmonic leakage current(RFHC)by over-zero & harmonic analysis methods accurately.
在运行电压下测量金属氧化物避雷器的阻性电流，对于反映MOA是否受潮以及其运行的状态具有重要意义。
Measuring resistive current of metal oxide arrester according to the service voltage is important to check whether MOA is damped and to indicate service status of MOA.
主要内容包括：工频暂时过电压，潜供电流，操作过电压，金属氧化物避雷器主要参数，特高压电气设备的绝缘水平等。
Paper covers temporary overvoltages, second arc current, switching overvoltage, major parameters of MOA and insulation level of UHV AC apparatus.
带串联间隙金属氧化物避雷器动作负载试验频繁失败的原因和如何正确选取电阻片整体参数一直是制造厂和用户关注的问题。
The causes of frequent failures in duty cycle test of gapped MOA and correct selection of parameters of resistor columns are always topics of concern of manufacturers and users.
带电测量金属氧化物避雷器持续电流具有停电测量无可比拟的优势，但周围带电设备对测量结果的影响是带电测量方式最大的缺点。
Measurement of metal oxide arrester (MOA) on line has a great advantage than off line, but its main defect is apt to be disturbed by running equipment all around.
金属氧化物避雷器(MOA)是一种新型保护器，具有非常好的非线性，在电力系统中得到广泛的运用，正逐步取代系统中的炭化硅避雷器。
MOA is a newly developed protector in power system and has very good non-linear characteristic, which makes it gradually become the substitute of the SiC arrester.
而相关标准及导则的制订，直流金属氧化物电阻片的制造与检验，多柱（或只）避雷器的电流分布测量是其国产化的关键。
So, the key techniques for development of MOA domestics are correlation standards, making and test of elements for DC MOA, and the measurement of non-uniform current between multi-column arresters.
而相关标准及导则的制订，直流金属氧化物电阻片的制造与检验，多柱（或只）避雷器的电流分布测量是其国产化的关键。
So, the key techniques for development of MOA domestics are correlation standards, making and test of elements for DC MOA, and the measurement of non-uniform current between multi-column arresters.
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