User manual
4 Calculation formulas
57
Total active energy (con-
sumed and supplied)
E
P+tot
E
P-tot
Wh
where:
i is subsequent number of the 10/12-period measure-
ment window,
P
tot
(i) represents total active power P
tot
calculated in i-th
measuring window
T(i) represents duration of i-th measuring window (in
hours)
Total Budeanu reactive
energy
(consumed and supplied)
E
QB+tot
E
QB-tot
varh
where:
i is subsequent number of the 10/12-period measure-
ment window,
Q
Btot
(i) represents reactive power Q
Btot
calculated in i-th
measuring window,
T(i) represents duration of i-th measuring window (in
hours)
Total reactive energy of
fundamental component
(consumed and supplied)
E
Q1+tot
E
Q1-tot
varh
where:
i is subsequent number of the 10/12-period measure-
ment window,
Q
1tot
(i) represents reactive power Q
1tot
calculated in i-th
measuring window,
T(i) represents duration of i-th measuring window (in
hours)
Total apparent energy
E
Stot
VAh
where:
i is subsequent number of the 10/12-period measure-
ment window
S
tot
(i) represents the total apparent power S
tot
calculated
in i-th measuring window
T(i) represents duration of i-th measuring window (in
hours)