240v 3P4W

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Benjayson

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Location
Nigeria
Occupation
Electrical engineer
I have some electric motors brought to Nigeria from the US these motors uses 240v 3ph where as In Nigeria the power supply is 415v 3Ph4W
In order to be able to use these motors can anyone proffer a solution for me
Thanks.
 
A step-down transformer will do it. A bigger issue may be running 60Hz US motors on 50Hz.

There are a lot of "It depends" here, motor size, type, the load, whether they're connected across-the-line or driven by a variable freq. drive, etc.
 
more than likely you can step your 415 50 Hz to 200 V and run the motors on that. They will run slower than designed and offer less torque, but that might be acceptable.

otherwise you need some other solution, maybe some VFDs. it is hard to know what your situation is so hard to give you any advice that is not conditional on a lot of things we don't know.
 
zbang said:
A step-down transformer will do it. A bigger issue may be running 60Hz US motors on 50Hz.

There are a lot of "It depends" here, motor size, type, the load, whether they're connected across-the-line or driven by a variable freq. drive, etc.
Click to expand...
Not driven by a vfd
 
petersonra said:
more than likely you can step your 415 50 Hz to 200 V and run the motors on that. They will run slower than designed and offer less torque, but that might be acceptable.

otherwise you need some other solution, maybe some VFDs. it is hard to know what your situation is so hard to give you any advice that is not conditional on a lot of things we don't know.
Click to expand...
I agree with this. 240 Volts @ 60/hz is 4 hz/rpm at 200 volts 50 hz you would get the same ratio of 4.
 
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