Patent ID: 6232751
Filing Date: 2001-05-15
Classification: H02H,H02P

Abstract:
An excitation control system for a rotating electrical apparatus including an input responsive to an excitation voltage and including an output having at least one alternating current phase, said excitation control system comprising:means for providing said excitation voltage to the input of said rotating electrical apparatus;means for regulating said excitation voltage;means for providing an electrical signal related to said output of said rotating electrical apparatus;means for providing a logic signal having a first state when said electrical signal is greater than a predetermined signal and said rotating electrical apparatus is in an on-line state, said logic signal otherwise having a second state;means employing the first state of said logic signal for providing on-line protection or trip parameters, and employing the second state of said logic signal for providing off-line protection or trip parameters; andmeans employing said protection or trip parameters for protecting or tripping said rotating electrical apparatus.