A megger is prevented from exceeding its rated output voltage by which of the following actions?

A megger is prevented from exceeding its rated output voltage by which of the following actions?

Right Answer is:

Friction clutch slippage

SOLUTION

Now meggers are usually rated at 500 volts. To avoid excessive test voltages, most meggers are equipped with friction clutches. When the generator is cranked faster than its rated speed, the clutch slips, and the generator speed and output voltage are not permitted to exceed their rated values.

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