| 摘要 |
PROBLEM TO BE SOLVED: To prevent the lock out of an inverter even when a short-circuit occurs across a load. SOLUTION: A device has an inverter 1 which converts DC to AC, a contactor 2 connected to the inverter 1, breakers for distribution 41, 42, and 43 which are connected to the contactor 2, loads which are connected to the breakers for distribution, and a controller 6 which, being connected to the inverter 1, controls the contactor 2 on a start-up output signal from the inverter 1. Due to this structure, the contactor 2 can be kept continuously turned on when the inverter 1 is re-started after an overcurrent protective circuit is started because a short occurs across a load. When the inverter 1 is re-started, only the breaker for distribution related to the short trouble performs a cut-off operation and therefore the start-up operation is continued and there is no stoppage of the entire system. |
