We recently bought a 4160V 400HP motor. We specified hp, rpm's and frame number. Our system is not sensitive enough as to where small changes in slip and the like do NOT affect this particular system.
When we specified the three stats we assumed that they would be within a certain NEMA...
just a simple question,
what does the diagram for a 3p open circuit transition autotransformer look like? are the neutrals permanently wired together?
i am fully aware of the drawbacks, found plenty of info on closed circuit but none on open circuit. thanx
newbie here
recently got a new reduced voltage starter for our 4160V 400HP motor at our plant. doesn't work.
single phase transformers, 167,167,&250 kva. i can "hear" a two stage start(reduced voltage and full voltage). the motor is a rebuild from corporate stock in North Carolina (we are...
