What precautions should be taken while meggering main generator?

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What precautions should be taken while meggering main generator?

asked Nov 17, 2021 by anonymous

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Last Answer : Answer: A

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Description : In troubleshooting a circuit in a console, you find that a resistor may be faulty. Which of the precautions listed must be observed when using an ohmmeter to carry out this test? A. Correct polarity ... D. The resistor's circuit must be de-energized and at least one end of the component isolated.

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Last Answer : Answer: D

Moisture accumulating in electric motors and generator windings having a cold insulation resistance greater than 50,000 ohms may be baked out with internal heat. This heat can be developed by ____________. A. feeding current into the windings at low voltage B. short circuiting the armature and field windings C. short circuiting the field windings and passing current through the armature D. obtaining current from a DC source such as an electric welder and feeding it into the armature while running the motor at full speed

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anonymous · Answer 1 · 2021-11-17T05:28:57+0000

All PT’s are racked out.

Earthing transformer grounding terminals disconnected.

Barring gear shall be kept off.

Stator water shall be drained fully and hot air blown through conductors.

Generator flexible lines shall be disconnected to isolate GT/UT.

What precautions should be taken while meggering main generator?

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