In this paper, attention problems on measurement insulation resistance by megger are proposed, reasons are analyzed, and gives some field examples.

摘要文章提出了兆欧表测量绝缘电阻应注意的问题，分析了原因，并给出了若干实例。

Insulance Ohmmeter, Model ZC25, can be used to measure insulation resistance of various electrical machinery, telecommunication element, household appliances and teaching electrical equipment.

ZC25型绝缘电阻表可用于测量各种电机、电讯元器件、家用电器及教学电器设备的绝缘电阻。