Insulation resistance testing is one of the most common test techniques applied to electrical equipment of all kinds, so we make no apology for taking this opportunity to look at a few basic questions we often get asked in relation to this important topic.

There are many ways of testing the insulation of electrical equipment using a variety of voltages, frequencies and test methods. The Megger Group supplies a comprehensive range of testers for such applications, from 50 V to 15 kV insulation resistance...