DG B-check,C-Check,D-check is depending upon the running
hrs.If the running hrs is not reached as mentioned.How to
conduct the DG checks.
Answer Posted / omprakash
B. CHECK 250 HRS OR 6 MONTHS
C. CHECK 1000 HRS OR 1 YEAR
D. CHECK 1500 HRS OR 2YEARS
| Is This Answer Correct ? | 90 Yes | 26 No |
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I have a drawing of a wound rotor induction motor for a crane. This crane motor has 5 forward speeds & 5 reverse speed implemented of course with different amount of resistance for each speed setting selected. What has got me scratching around is the fact that 8 of the 10 speed selections switch in uneven (unbalanced) amounts of resistances on each of the 3 connections to the motor's rotor.Can this be possible? I would have assumed this would produce unbalanced rotor currents and therefore vibration in the motor. I would greatly appreciate anyone's comments on this. Many thanks, Confused.
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