Slip Ring Wear
Slip Ring Wear
(OP)
We have a turbine with the field slip rings that are showing alot of wear/grooving. We change polarity on the ring after stoneing the bad ring, the wear followed the polarity and is now grooving/wearing the other one. Its a GE exciter, direct connected 125KW at 250 volts at 450 RPM. I am wondering why or what I should look at to find out why this is following the polarity. Thanks in Advance






RE: Slip Ring Wear
Since you are noticing differential ring wear, the mechanical abrassive wear is proably not the problem but due to the electrical. Once the ring surface deteroates, the contact is reduced and the minute arcing gets even worse, thus causing even greater wear.
the rings should be resurfaced to restore the contact surface finish
RE: Slip Ring Wear