Answer Posted / b.sudhakaran
A Check & B check for DG set, A check means daily check for dg Like diesel level,oil level, radiator water level, Dg room cleaning, air filter checking, and all value position ( open or close condition check above state.now you switch on primary motor for 5mints( for oil lubrication purpose) now you can switch DG for 5mints this is for A check, B check means 300 hours for dg or every 6month that time replace oil,oil filter, diesel filter and check air filter pulse A check this is b check.
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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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