jim123
Member
- Location
- new castle,de
just got in a square d motor controller for a 5hp two speed,3 ph motor.It has a high speed , a low speed , and off. [THE SWITCH IS ALL IN ONE , A THREE POSITION SWITCH }I thought when u went from High speed to low speed u needed a time delay to stop damage to the motor and a third contactor to short the low speed windings when running it in high speed. You can go from high to low instantly and U can hear the motor straining when that's done . Before I bring this to supervision just wondering what u guys think.Or because its a small motor I should not worry about it