| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a power control system which prevents malfunctioning of a load device due to instantaneous service interruptions, by maintaining the supply of power for a specified time in the facilities, after occurrence of the instantaneous service interruptions. SOLUTION: This system comprises an emergency power off circuit 37, a first voltage rectifier 43, and a second voltage rectifier 49. The emergency circuit 37 prevents a power switch 39 from being tripped for one second, when the instantaneous service interruptions occur. The first rectifier 43 discharges DC power for a specified time, when AC power is not supplied via a power line by the instantaneous service interruptions. DC power supplied from the first rectifier 43 is supplied to the second rectifier 49, and the second rectifier 49 discharges stored DC power during the instantaneous service interruptions.</p> |
