| 摘要 |
PROBLEM TO BE SOLVED: To provide an uninterruptible power supply device in which the load current can be grasped in a steady operation, a power failure is alarmed to the user in a power failure, and the remaining capacity of a storage battery can be known. SOLUTION: A current to be supplied to a load 8 from a commercial power supply 1 in the steady operation is detected by a load current detection circuit 13 and it is indicated on indicating lamps 21-24, and the storage battery 3 is charged with a charger 2. The power failure is detected by a commercial power supply voltage detection circuit 9, and a buzzer 25 is rung in the power failure, and a DC power from the storage battery 3 which is converted to an AC power by an inverter 4 is supplied to the load 8, and the voltage of the storage battery 3 detected is indicated on the indicating lamps 21-24. |
