Acquisition Control (When an SC is Generated)

When an SC is generated, acquisition of the maximum and minimum voltages of the input power source is controlled by the following process.

During normal operation, the voltage of the input power source is acquired at 0.5 second intervals. When an SC is generated, the maximum and minimum voltages of the input power source are obtained from the voltages which were acquired within a predetermined period of time (5 seconds before the generation of the SC).