Hioki 3197 - Page 167

8.5 Calculation Formulas
159
8
Energy Consumption and Demand Formulas
Wiring
Configuration
Parameter
Single-
Phase
2-Wire
Single-Phase
3-Wire
Three-phase, 3-wire
Three-Phase
4-Wire
1P2W 1P3W 3P3W2M 3P3W3M
3P4W,
3P4W2.5E
Active Power value
(amount of con-
sumption)
WP+ [kWh]
WP
1+ WPsum+=WP1++WP2+ WPsum+=WP1++WP2++WP3+
WPc+ (|PC(+)|)
Active Power value
(amount of regener-
ation)
WP- [kWh]
WP
1- WPsum-=WP1-+WP2- WPsum-=WP1-+WP2-+WP3-
WPc- (|PC(-)|)
Reactive Power
value (amount of
lag)
WQLAG [kVarh]
WQ
1LAG
WQsumLAG (|Qsum(+)|)
WQ
cLAG (|Qc(+)|)
Reactive Power
value (amount of
lead)
Active Power demand
WQLEAD [kVarh]
WQ
1LEAD
WQsumLEAD (|Qsum(-)|)
WQcLEAD (|Qc(-)|)
Active Power
demand
Pdem+ [kW]
P
dem1+ Pdemsum=Pdem1++Pdem2+ Pdemsum=Pdem1++Pdem2++Pdem3+
Pdemc+ (|PC(+)|)
Active Power
demand
Pdem- [kW]
P
dem1- Pdemsum=Pdem1-+Pdem2- Pdemsum=Pdem1-+Pdem2-+Pdem3-
Pdemc- (|PC(-)|)
Reactive Power
demand
QdemLAG [kVar]
Q
dem 1LAG
Qdem sumLAG (|Qsum(+)|)
Q
dem cLAG (|Qc(+)|)
Reactive Power
demand
QdemLEAD [kVar]
Q
dem 1LEAD
Qdem sumLEAD (|Qsum(-)|)
Q
dem cLEAD (|Qc(-)|)
Note. h: Measurement period, k: 1-hour conversion coefficient
(+): Use this value (amount of consumption for Active Power or amount of lag for Reactive Power) only
when the n
umerical value is positive.
(–): Use this value (amount of regeneration for Active Power or amount of lead for Reactive Power) only
when the n
umerical value is negative.
k
1
h

=
k
1
h

=
k
1
h

=
k
1
h

=
k
1
h

=
k
1
h

=
1
h
---
1
h

=
1
h
---
1
h

=
1
h
---
1
h

=
1
h
---
1
h

=
1
h
---
1
h

=
1
h
---
1
h

=