兆欧表 （megger）是电工常用的一种测量仪表，主要用来检查电气设备、家用电器或电气线路对地及相间的绝缘电阻，以保证这些设备、电器和线路工作在正常状态，避免发生触电伤亡及设备损坏等事故。
megger ; megohmmeter ; megameter ; tramegger ; earthmeter
For large scale equipments, absorption or polarization index is used to judge the state of IR. This paper introduces the research and development of megohmmeter briefly which is used for measuring IR.
本文介绍了兆欧表的发展历史及研究现状。
参考来源 - 水内冷发电机组绝缘性能测试的研究与实现·2,447,543篇论文数据，部分数据来源于NoteExpress
日置公司即将推出一款新型的模拟兆欧表，适用于测量住宅和工业设施中的绝缘性和连续性。
HIOKI E. E. CORPORATION will be releasing a new analog insulation tester for general testing of both the insulation and continuity of residential and industrial installations.
避免焊机内进水或受潮，否则及时吹干，用兆欧表测量绝缘情况(包括连接节点之间及连接点与机壳之间)。
Aviod water and moisture penetration, otherwise blow it dry in time and start a megger insulation test which should include the insulation between connection joints as well as joints and cabinet.
检查方法是将兆欧表上的一个接线柱接在电泵电缆线上，另一接线柱接在电机外壳上，摇动兆欧表，观察绝缘电阻值。
Megohm inspection method is to form an electric cable terminal at the online access, another access terminal on the motor casing, megohm shake table to observe the value of insulation resistance.
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