| 摘要 |
FIELD: electrical engineering. ^ SUBSTANCE: proposed circuit contact maker-breaker has control electromagnet and protective device capable of actuating movable contacts in response to instruction control and fault detection in electric circuit, respectively, through multiport network. Electromagnetic breaking gear is added to contact control gear. Protective device , preferably interchangeable one, is connected to electromagnet through control line and to control gear through disconnecting line so that it connects power supply to electromagnet in control line and in case of fault it sends break signal to disconnecting line. Electromagnet used for the purpose is dc electromagnet and protective device adapts its voltage to power supply rating. ^ EFFECT: enhanced operating reliability in contact make mode and enhanced speed in contact break mode within specified current and voltage range using minimal number of components. ^ 10 cl, 6 dwg |
