SOLUTION

The megger is an instrument used for the measurement of high resistance and insulation resistance.

Essentially the megger insulation tester consists of a hand-driven dc generator and a direct reading true ohmmeter. Megger is also called meg-ohmmeter.

An ordinary ohmmeter cannot be used for measuring the resistance of multimillions of ohms, such as conductor insulation.

Megger used to measure high resistance, of the order of one megaohm and above.

The meg-ohmmeters or megger is a portable deflection instrument widely used to check the insulation resistance of electrical cables and equipment.

This instrument measures the insulation resistance of the electric circuits relative to earth and one another.