| 摘要 |
The present invention relates to a control circuit for a high-voltage system of a railroad car and, more specifically, to a control circuit for controlling a protection circuit in a high-voltage system of a unit which is made up of 2M 1T using a unit selection relay. According to the present invention, in a unit which is made up of 2M 1T, the control circuit for a high-voltage system of a railroad car connects the M cars to the front and the back of the T car and includes a unit selection relay linked with a main circuit breaker (MCB) block signal in each of the M cars, so that when an MCB block signal from one of the M cars is activated, the MCB block signal is linked to the T car through the unit selection relay of the corresponding M car, and a protection circuit of a high-voltage system of the T car is turned on to block an MCB. |
