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BRUSHLESS GENERATOR FIELD GROUND DETECTION SYSTEM

  • US 3,727,123 A
  • Filed: 02/22/1972
  • Issued: 04/10/1973
  • Est. Priority Date: 02/22/1972
  • Status: Expired due to Term
First Claim
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1. Ground detecting apparatus for rotating electrical machinery having a rotating field winding comprising:

  • a. energy transmitting means operable at a first state wherein energy is transmitted at a first level and at a second state wherein energy is transmitted at a second level different from said first level;

    b. means mounting said energy transmitting means for rotation with a rotor of an electrical machine; and

    c. control means mounted for rotation with the rotor of said electrical machine and connected to said energy transmitting means, said control means operable to cause said energy transmitting means to change from its first state to its second state upon the occurrence of a ground in said rotating field winding.

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