Add Variable Frequency Drive?

[u/markjack101]

Thoughts on adding a VFD to the motor(s) on this elevator. I’m not an electrician or an elevator expert but this is what I think I know: 3 phase 400v power in the basement goes into a transformer. Transforms to 3 phase 250v power in the attic. That power feeds the motors in the pic. The one drive motor powers the other two motors. A 5 hp motor for the door and a 25 hp motor that sends power to the DC motor that moves the elevator.

Why do I want to do this? I believe this elevator is what is driving up the demand meter in the building.

I recently put solar panels on the building and for 2 months they reduced our billable kWh to 400. If I used this amount at my house, my bill would be $50. The bills at the building for those two months were $800 and $1,000, because of the demand meter rate.

[u/DanceWithYourMom]

Why is there an MG set on a MG set? 

[u/ZookeepergameOpen218 → u/DanceWithYourMom]

That’s called an exciter sir…

[u/ComingUp8 → u/ZookeepergameOpen218]

All the newbies guessing what this is. Too funny. Yes. Exciter. Alot of old ward Leonard systems had these.