Meter calculations, Nominal voltage, Nominal current – CIRCUTOR CIRWATT-B410T Series User Manual
Page 29: Apparent power, Active power, Reactive power, Power factor, Maximum demand
THREE PHASE STANDARD CIRWATT B METER
CIRWATT B THREE PHASE INSTRUCTION MANUAL
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2.- METER CALCULATIONS
2.1.- Nominal Voltage
64
1
2
64
1
n
n
RMS
v
V
2.2.- Nominal current
RMS
RMS
V
S
I
2.3.- Apparent power
2
2
Q
P
S
2.4.- Active power
64
1
64
1
n
n
n
i
v
P
2.5.- Reactive power
64
1
90
64
1
n
n
n
i
v
Q
2.6.- Power factor
S
P
FP
2.7.- Maximum demand
The maximum demand is calculated from the instantaneous power of each second. This
power is averaged over a period of integration (15 minutes), obtaining MD
15
.
900
1
15
900
1
n
n
n
P
MD
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