| 摘要 |
The present invention relates to a main circuit breaker control circuit of a high speed railway vehicle and, more specifically, to a control circuit for controlling an actuation signal relay in a vehicle (switchboard) not in a main circuit breaker and forcibly blocking the relay when a system (electric) fixation is generated in the inputted state of the main circuit breaker. The main circuit breaker control circuit of a high speed railway vehicle according to an embodiment of the present invention comprises: a main circuit breaker having a power supply unit for supplying power, a signal applying unit for receiving input and cutoff signals and delivering the signals to a control unit, and the control unit for controlling input and cutoff operations by the input and cutoff signals; and multiple relays for applying the input and cutoff signals to the signal applying unit by being connected with the power supply unit. An end of a main circuit breaker cutoff relay, an end of a main circuit breaker input relay, and an end of a main circuit breaker relay are respectively connected to the power supply unit through different lines, a contact (a) of the main circuit breaker relay and a contact (b) of the main circuit breaker cutoff relay are connected to the input (close) line of the signal applying unit, a contact (b) of the main circuit breaker relay and a contact (a) of the main circuit breaker cutoff relay are connected to the cutoff (open) line of the signal applying unit, and the other end of the main circuit breaker cutoff relay is connected to the input (close) line of the signal applying unit. |
