| 摘要 |
<p>PURPOSE:To prevent a defect from occurring due to driver's electric shock or impact by enabling to lift a pantograph only when the door switch of a driver's cab is closed in a nontrolley mode. CONSTITUTION:When the door of a driver's cab is closed and a mode changeover switch 5 is shifted to a nontrolley mode E side, a pantograph control (PC) relay 15 is energized. When the switch 5 is shifted to a trolley mode T side in this state, a pantograph-actuating solenoid valve 8 is energized to lift the pantograph. When the door is opened in the state that the switch 5 is shifted to the trolley mode T, any of door contacts 12, 13 is opened to deenergize the relay 15. Thus, the valve 8 is deenergized after a slight delaying time due to an OFF delay relay 30. Simultaneously, a collected current is reduced by a rectification controller.</p> |
