Miscellaneous functions
KW2M-A/X User's Manual
55
6.4.2 Current Demand
Current demand calculates the demand based on a thermal demand meter.
Current demand =
(Average of current
–
last current demand value) x 90% (fixed) + Last current demand value
If a stable current flows for the interval time, 90% of current value is displayed.
(%)
90
interval
time
6.4.3 Max. demand value
The device measures and logs the following maximum demand values: active, reactive, apparent, active
(export), reactive (export), current
.
6.4.4 Demand alarm output
・
Output with the pulse output terminal (open collector).
・
Output only when the output type is set to [alarm].
・
No alarm is output if the power demand alarm threshold is set to
‘0.000’k
W.
6.4.5 Behavior during power failure and recovery
<When a power failure occurs>
・
The device stops the demand measurement.
・
The device logs the values for max. demand and monthly max. demand in the internal memory.
<When the device recovers from a power failure>
・
The device stops the demand measuring until the next interval. As soon as the next interval has
started, the device starts measuring the demand.