Capacitive voltage transformer with improved ferroresonance protection device
a coupling capacitor protection device with a voltage limiter connected across the tap capacitor feeding the induction transformer primary winding. The suppressor is a ceramic oxide nonlinear resistor changing from high to low resistance, thereby limiting the tap voltage to less than that at which the induction transformer core saturates in order to minimize ferroresonance in the circuit. Also, the limiter gives voltage protection to the tap capacitor circuit.
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Description
Patent History
Patent number: T967008
Type: Grant
Filed: Apr 7, 1977
Date of Patent: Feb 7, 1978
Assignee: Westinghouse Electric Corporation (Pittsburgh, PA)
Inventors: Andrew S. Sweetana, Jr. (Bloomington, IN), Frederick J. Brown (Ellettsville, IN), Gerald B. Boyette (Bloomington, IN)
Application Number: 5/785,380
Type: Grant
Filed: Apr 7, 1977
Date of Patent: Feb 7, 1978
Assignee: Westinghouse Electric Corporation (Pittsburgh, PA)
Inventors: Andrew S. Sweetana, Jr. (Bloomington, IN), Frederick J. Brown (Ellettsville, IN), Gerald B. Boyette (Bloomington, IN)
Application Number: 5/785,380
Classifications
Current U.S. Class:
323/61;
Transformer With Structurally Combined Protective Device (361/38)
International Classification: G05F 306;
International Classification: G05F 306;
