Thanks to all that responded to this. Like I said, unfortunately this was all engineered by someone else and now we are getting drug into it. Our initial responsibility is to PM the motors but with that, we are finding ourselves assisting with troubleshooting the failures. As everyone knows...
Thanks for the link. I am hoping it is axial flow as that would explain the overamping. I will no more tomorrow regarding what the pumps are.
As for the shafts, I agree, something else is happening. We are going to do VA signatures to see what is up there.
Thanks again!
I am working on a problem where the end-user is runing single stage, vertical pumps. They are running with the discharge valves 75% closed. What continues to happen is that they are experiencing over amping and even some shafts breaking. These are 400hp 1200rpm motors. Right now, I do not...