115
Appendix E—Calculated Power Channel Formulas
The following information details the formulas used to calculate the parameters available in the Power
Sum Channels 5 and 6.
WYE CONFIGURATION L1-N, L2-N, L3-N
Measurement Formula Notes/Description
Amps (System)
L1 + L2 + L3
3
Average of L1, L2, and L3 amp values.
Volts (System )
Sum of three phase to neutral voltages
3
For a Phase to Neutral with WYE
configured meter.
Average of the three phase-to-neutral
voltages.
kW (System) L1 kW + L2 kW + L3 kW
Sum of L1, L2, and L3 phase watt
values.
kWh (System)
L1 kW + L2 kW + L3 kW
# of samples in an hour
Calculated per waveform sample with
a running total of each waveform kWh
for the integration period.
VAR (System) L1 kVAR + L2 kVAR + L3 kVAR
VARh (System)
L1 kVAR + L2 kVAR + L3 kVAR
# of samples in an hour
See kWh (System) WYE notes.
VA (System) L1 kVA + L2 kVA + L3 kVA
VAh (System)
L1 kVA + L2 kVA + L3 kVA
# of samples in an hour
See kWh (System) WYE notes.
Apparent PF System
kW System
kVA System
Measurement calculation information
is provided for reference only.
Displacement PF System
kW System
SQRT [(kW System)
2
+ (kVAR System)
2
]
w ww. . com
information@itm.com1.800.561.8187
To Next Page
Loading...