Motor for grinder build?

G

Grandalen

Joined
Dec 11, 2016
Messages
15
Hello guys.

I got this motor free of work, but i am unable to figure out how many HP it's got, anyone know? Or does it say somewhere on the platen in the picture, and im just blind?

Is it usable for a grinder build?
https://imgur.com/a/jXtr4

jXtr4

Cheers
 
@ 60hz and 480v it's 1.7hp, @ 50hz and either 220 or 480v it's 1.475hp.

These numbers calculated by converting the rated kW.

The thing I'd be more concerned about is that (atleast in English) the placard doesn't tell you what phase it is.

Edit: what's the "3~mot" mean? Could that be the phase rating?
 
Cereal_killer said:
@ 60hz and 480v it's 1.7hp, @ 50hz and either 220 or 480v it's 1.475hp.

These numbers calculated by converting the rated kW.

The thing I'd be more concerned about is that (atleast in English) the placard doesn't tell you what phase it is.

Edit: what's the "3~mot" mean? Could that be the phase rating?
Click to expand...
That's correct. 3~ means 3 phase. It will need a transformer in a typical residential setting.
 
As has been said above, the kW can be converted to HP if you wish to do so; the nominal power rating on the nameplate is the mechanical power that it will put out. The power should be enough for a beltgrinder(biggest I've seen yet is 2,2kW)
3~ stands for three Phase AC.
What's been said that isn't correct is that it'll need a transformer because it's 3~. A transformer will give you Higher/lower voltage, not more phases.
To drive a three-phase Motor(If you don't have Access to three phases that is, which is likely in america) you'll need a vfd or can wire it in certain ways(which will require some calculations)
Always remember that mains have the potential to easily kill you, when working on it! (Don't know the law where you're at but in Germany for example it would be illegal to hook it up yourself)
 
Is the OP in Norway? If so, he should have 230v 50 Hz service.
According to the nameplate, it can be wired 230v with 50Hz service. Current draw will be 5.3 amps full load, and run speed will be 900 rpm.
With this service, a 230v single phase to 3 phase 50Hz, 2 horsepower VFD should work without a transformer.

oMX0FbB.jpg
 
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Glenn Goodlett said:
Seems like that would make it perfect for use with a VFD. They are cheap now days.
Click to expand...
You're right. VFD would definitely work. It may have to be derated but also could come configured for the single to three phase change from the manufacturer.
 
jpm2 said:
Is the OP in Norway? If so, he should have 230v 50 Hz service.
According to the nameplate, it can be wired 230v with 50Hz service. Current draw will be 5.3 amps full load, and run speed will be 900 rpm.
With this service, a 230v single phase to 3 phase 50Hz, 2 horsepower VFD should work without a transformer.

oMX0FbB.jpg
Click to expand...
I am indeed in Norway. Thanks a lot for the information.
Bluearcflash said:
You're right. VFD would definitely work. It may have to be derated but also could come configured for the single to three phase change from the manufacturer.
Click to expand...
Thanks, i will go ahead and order myself a VFD and start my build. Thanks a lot to everyone that replied :)
 
Very nice motor. Can you get the specification sheet and wiring diagram?

Incidentally, there is a very funny film made by the Norwegian Broadcasting Corporation, narrated by John Cleese. "To Norway, home of giants" (1979).

 
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