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Electric Motors/engine lathe wiring

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Question
I have a 25 horsepower American Edestaal lathe with electrical problems its a 1977 3 phase 240 volt,the contactors are bad and have had lots of problems it was built in Romania.My question is can I install a vfd or replace the contactors with a simple trouble free set up and get rid of the old wiring.

Answer
Sure if it was just old and worn out, contacts, coils etc,  any new motor starter will work,  yes a VFD will work,   and will add speed control to the mechanical speed adjustments,    I take it you have 240 or close voltage feeding the unit?  Make sure what voltage you have  and what it is line to line to line,   unbalanced voltage can be a huge problem with unbalanced current  10 times the unbalance of the voltage,   

So if the voltage is OK,   pick your best cost effective starter and or VFD,  and go for it,   the VFD will not be cheap, but it has the motor starter, overload protection, reversing, braking and 40 or 50 more parameters    to use,          

A great device    if you can swing the cost  

Electric Motors

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Will

Expertise

Three phase/ AC DC single phase motors, controls, any problems or failures, motor installation, performance issues, connections. All other electric motors/gearboxes/apparatus. Specialty repair concerns, obsolete motors and solutions. Other mechanical or specialty equipment. See my profile under Home/electrical at this site

Experience

30 plus years in the electrical motor and apparatus repair industry. VP level management of repair facilities, current owner of my own specialty repair and consulting firm.

Organizations
EASA, IBEW [retired], other specialty organizations, Lubrication, Vibration EDI, Tribo-electric Councils

Publications
Currently fielding concerns at this site under "Home Electrical"

Education/Credentials
4 year technical, College level specific courses, EASA repair courses, vibration analysis electronic and electrical trade school.

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