Rotor voltage for wound motor

[zlatkodo]

How to choose the rotor-voltage for three-phase slip ring LV motor in the design process?
Are there any standards or rules?
Zlatkodo

 

[waross]

The first thing that comes to mind is equal or less than line voltage for safety issues and possibly compliance.

Bill
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"Why not the best?"
Jimmy Carter

 

[LionelHutz]

Balance the voltage vs the current.