myStudyMate

Answer:

500V d.c.

explaination:

The correct test voltage for conducting an insulation resistance test on a 400V three-phase motor winding to earth is 500V d.c. This voltage is chosen because it is high enough to provide a reliable measurement of the insulation resistance without causing damage to the motor winding. Insulation resistance testing is crucial for ensuring the safety and reliability of electrical equipment, as it helps identify any deterioration or failure in the insulation that could lead to electrical faults or hazards.

Topic: Electrical Engineering, Insulation Testing

Tags: insulation resistance motor winding electrical testing safety

Get Instant Homework Help with Electrical Engineering, Insulation Testing Questions

When conducting an insulation resistance test on a 400V three phase motor winding to earth, what test voltage would be required?

Question:

Choices:

Answer:

explaination: