Title:
PROTECTING RELAY
Document Type and Number:
Japanese Patent JPS5561231
Kind Code:
A
Abstract:
In a protective relaying device comprising first and second potential transformer circuits for transforming voltages of an electric power system, first and second relaying elements are further provided for receiving the output voltages of the first and second potential transformer circuits, respectively so that each of the relaying elements delivers an output of a particular logic state when it operates. When the outputs of the first and second relaying elements coincide with each other, a logic circuit receiving the outputs delivers a tripping signal to a circuit breaker.
Inventors:
KONDOU RIYOUTAROU
INAGAKI JIYUNICHI
INAGAKI JIYUNICHI
Application Number:
JP13322078A
Publication Date:
May 08, 1980
Filing Date:
October 31, 1978
Export Citation:
Assignee:
TOKYO SHIBAURA ELECTRIC CO
International Classes:
H02H3/05; H02H3/38; H02H1/00; (IPC1-7): H02H3/05