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.

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。

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A new model of leakage current tester of MOA (metal oxide arrester) is introduced.

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。

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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.

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。

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