| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an inexpensive voltage-drop countermeasure device that can operate all load devices as much as possible by effectively utilizing accumulated electric energy, by optimizing timing for limiting the load devices to be operated to one part when instantaneous power drop and power interruption occurs. <P>SOLUTION: In a memory of a control unit of the voltage-drop countermeasure device that feeds accumulated power to the load devices from an accumulation device that accumulates power when there occurs the instantaneous power drop and the power interruption of a commercial power supply, timing TC is set in advance in which a first attenuation curved line CL1 of an output voltage of the accumulation device when feeding power to all the load devices, and a second attenuation curved line CL2 of the output voltage of the accumulation device when feeding power to a part of all the devices intersect with each other. When an elapsed time from the occurrence of the instantaneous power drop and the power interruption reaches the timing TC, an object to be fed with power from the accumulation device is limited to a part of the load devices from all the load devices. <P>COPYRIGHT: (C)2007,JPO&INPIT |
