How to use insulation tester (Megger)? |Explained

Welcome to Thursday questions, today Electrical Engineering Planet will answer an important question:
What is insulation tester or mega ohmmeter or megger? How to use it?
You can ask any question and EEP will try to answer it in the next videos

Hint:
We use guard terminal for this reason: Large cables, windings, power transformers, electrical bushings and other assets that have large surface areas can become contaminated by dirt or even a thin film of moisture. These conditions tend to lead to significant surface leakage current which can seriously affect the measurement of the true insulation leakage current.

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You can check the resources from here:
https://uk.megger.com/electrical-tester/april-2019/the-importance-of-the-guard-terminal-in-insulation
https://www.controleng.com/articles/six-tips-for-testing-motor-insulation-systems/
https://www.ecmweb.com/maintenance-repair-operations/test-measurement/article/20898954/understanding-insulation-resistance-testing

Видео How to use insulation tester (Megger)? |Explained канала ElectricalEngineeringPlanet