400V, 50hz

[olc]

I am reviving a closed thread:

A owner is buying a peice of equipment that is 400V-50hz. It is largely motor load. Roughly 11KW.
The building will have 120/208V.

1. Will the equipment run on 480V-60hz?

2. Is there a way to make 400V-50hz?

3. Since we are installing a transformer for the one item any way would a transformer closer to 400V 60 Hz better? (assuming available - I haven't really looked)

 

[Besoeker]

I am reviving a closed thread:

A owner is buying a peice of equipment that is 400V-50hz. It is largely motor load. Roughly 11KW.
The building will have 120/208V.

1. Will the equipment run on 480V-60hz?

2. Is there a way to make 400V-50hz?

3. Since we are installing a transformer for the one item any way would a transformer closer to 400V 60 Hz better? (assuming available - I haven't really looked)

If the motors are driving pumps or fans the difference in frequency could be an issue even if you transform the voltage.

 

[mbrooke]

400 volt 50Hz motor will happily run at 480 volts 60Hz, however it will spin faster which may effect the load.


Member Jraef is an expert in this field and bar none in understanding this subject.

 

[petersonra]

I am reviving a closed thread:

A owner is buying a peice of equipment that is 400V-50hz. It is largely motor load. Roughly 11KW.
The building will have 120/208V.

1. Will the equipment run on 480V-60hz?

2. Is there a way to make 400V-50hz?

3. Since we are installing a transformer for the one item any way would a transformer closer to 400V 60 Hz better? (assuming available - I haven't really looked)

I think you would be better off with 480/ 60 then with 400 / 60 because you are probably better off in most cases keeping the volts per Hertz ratio the same.

A lot depends on what kind of motor load you are talking about. A lot of it won't care one way or the other. Some of it will. Sometimes whatever you're driving might care or it might not. About the only thing you can really do is put in a vfd for each motor or some kind of inverter that serves the whole unit if you don't know what the effect of changing the voltage or frequency will have.