Wound Rotor Repair Tips: Testing, Application and …

Wound Rotor Repair tips : testing , Application and Failure AnalysisEASA Convention 2013 Mandalay Bay ResortLas Vegas, NVJuly 1, 2013 Presented byChuck YungSenior Technical Support SpecialistElectrical Apparatus Service AssociationSt. Louis, MO1 Wound Rotor (WR) motors represent only a small fraction of all electric motors in service. Reviewing the Technical Support call logs, one might conclude that the proportion of Wound Rotor motors in service is far greater. Because many of us do not work on Wound Rotor motors very often, it is understandable that not everyone has a clear understanding of how they differ from a squirrel cage motor. The purpose of this article is to dispel some misconceptions about how they work, and to offer valu-able tips for failure analysis, Repair and , ball mils and crane hoists are common applications for Wound Rotor motors, because of their varying speed-torque requirements. The benefit of a Wound Rotor motor is that the resistance of the Rotor circuit can be externally varied, to provide either variable resis-tance (in the case of a liquid rheostat) or steps (when a series of external resistors of fixed resistance are used), to maximize the torque to suit a particular Application .

2 the rotor lead connection to a slip ring. When inspecting a wound rotor motor and the rotor lead is the point of failure, the transient caused by a rapid

Loading..

Tags:

  Applications, Testing, Tips, Repair, Rotors, Rotor repair tips

Information

Related search queries