vfd motor application

[jaykool]

I am installing a vfd.

I am in the process of specifying a motor for the vfd.

Motor is in a washdown area and some dust.

VFD is controlling a pump (pumping liquid products).

I am going to specify a "severe" duty motor, but someone told me that I should go with an aggregate duty motor.

Wouldnt this be overkill?

 

[petersonra]

I am installing a vfd.

I am in the process of specifying a motor for the vfd.

Motor is in a washdown area and some dust.

VFD is controlling a pump (pumping liquid products).

I am going to specify a "severe" duty motor, but someone told me that I should go with an aggregate duty motor.

Wouldnt this be overkill?

I am not sure why you would specify either a severe duty or an aggregate duty motor for this application. Both seem overkill unless there are other factors not mentioned in your post.

 

[jim dungar]

What size motor, and how much is the total cost of replacement?

For a 5HP present generation motor, I would simply "buy off the shelf".
For a 500HP custom built motor I would involve the motor manufacturer.

 

[weressl]

I am installing a vfd.

I am in the process of specifying a motor for the vfd.

Motor is in a washdown area and some dust.

VFD is controlling a pump (pumping liquid products).

I am going to specify a "severe" duty motor, but someone told me that I should go with an aggregate duty motor.

Wouldnt this be overkill?

IEEE-841 motors are suitable for ASD application. You need to specify the washdown requirement in addition.