An insulation resistance test set has 3 scales on its meter face. the - ProProfs Discuss
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An insulation resistance test set has 3 scales on its meter face. The top scale is 3 to 3k gigohms. The center scale is 30 to 30k megohms. The bottom scale is 3 to 30k kilohms. After selecting the center scale and connecting the leads to a 2300 volt , 500 HP motor, the instrument indicates the lowest reading. You have determined that :



A. There are shorted turns in the windings
B. The motor insulation is weak
C. The value measured should be reported
D. The test set is on the wrong scale
E. B and D are correct

This question is part of Prime Power Test Technician Level 2 Practice Exam 2 of 3 (Technical)
Asked by Michaelleal, Last updated: May 25, 2018

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1 Answer

michaelleal

Michaelleal

Answered on May 22, 2018

B and D are correct
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