Brian Campbell
Plastic
- Joined
- Dec 14, 2021
I have a 7.5kw lathe motor that needs to be soft started as the local power utility has a limit of 4kw direct online starting for three phase motors as this can cause voltage drops which affect neighbors.
The three-phase power I have is generated using a rotary phase converter. I stagger start my rpc so have enough capacity for the lathe motor. I will try to balance the output with caps but don’t expect to get the voltage balance perfect. All the machines I need three phase power for are old so do not need perfectly balanced power.
I have a SEW MOVIDRIVE vfd I am planning on using, its capable of starting a 7.5kw motor.
The concern I have is that with all the fancy electronics in the vfd will this be thrown out of order using “dirty” three phase power from a rpc?
Thanks, Brian
The three-phase power I have is generated using a rotary phase converter. I stagger start my rpc so have enough capacity for the lathe motor. I will try to balance the output with caps but don’t expect to get the voltage balance perfect. All the machines I need three phase power for are old so do not need perfectly balanced power.
I have a SEW MOVIDRIVE vfd I am planning on using, its capable of starting a 7.5kw motor.
The concern I have is that with all the fancy electronics in the vfd will this be thrown out of order using “dirty” three phase power from a rpc?
Thanks, Brian