Panasonic ELC500 User Manual page 113

■Fixed-time demand (Average power method)
This is the method of monitor and control by estimation demand value from the ratio of the demand value
increased from the start time to elapsed time.
It monitors every 1-min. When the estimated demand, calculated from average power for the elapsed
time, exceeds the target value, it output alarm in 3 stages.
According to the alarm level, you can control equipment power consumption such as air conditioner, and
depress peak power.
<Calculation formula> N (min): period
Present demand = Integral power from the start to elapsed time x (60/ N (min))
Estimated demand = Present demand / Elapsed time x N (min)
Adjustment demand = Estimated demand – Target demand
<Alarm example 1>
Present demand is under Reference demand. → No alarm
<Alarm example 2>
Present demand is over Reference demand → Alarm 1
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ELC500 Control unit