KBR D9-PQ, User Manual, Page: 86 / 92

KBR multimess D9-PQ
20144 EDEBD
A0228-5023-1_EN
86
Reactive power / Reactive energy
In the setup of the device two variants of the power calculation are adjustab-
le Simplified power calculation
Reactive power without unbalanced reactive power calculation:
2
2
D Q Q
V
+ =
Q
∑
= Q L1+ Q L2 + Q L3
Reactive power calculation according DIN40110 part 2
Reactive power calculation with unbalanced power:
( )
Q Sgn S P
L L L L − − − −
= ⋅ −
10 12 10 12 10 12
2
10 12
2
/ / / /
ϕ
( )
Q Sgn S P
10 12 1 10 12 10 12
2
10 12
2
/ / / /
= ⋅ −
−
ϕ
Reactive energy:
„Supply reactive energy“ inductive reactive enEQ.
( ) ( )
n Q n Q
L S 12 / 10 −
=
0 ) ( =
n Q
S
0 ) ( :
12 / 10
≥
−
n Q für
L
0 ) ( :
12 / 10
<
−
n Q für
L
„Consumer reactive energy“ capacitative reactive energies -EQ.
( ) ( )
n Q n Q
L S
12 / 10 −
=
0 ) ( :
12 / 10
<
−
n Q für
L
Measurement data – measurement methods