KBR D9-PQ, User Manual, Page: 88 / 92

KBR multimess D9-PQ
20144 EDEBD
A0228-5023-1_EN
88
Collective apparent power in accordance with DIN40110:
Σ Σ Σ
⋅ = I U S
2
3
2
2
2
1
2
31
2
23
2
12
2
1
Nrms Nrms Nrms rms rms rms
U U U U U U U + + + + + ⋅ =
Σ
4-wire network:
2 2
3
2
2
2
1 Nrms rms rms rms
I I I I I + + + =
Σ
3-wire network, I1 + I2 + I3 ≠ 0:
2 2
3
2
2
2
1 Erms rms rms rms
I I I I I + + + =
Σ
2
3
2
2
2
1
2
31
2
23
2
12
2
1
Erms Erms Erms rms rms rms
U U U U U U U + + + + + ⋅ =
Σ
Geometric Fundamental Oscillations - Apparent Power:
] [ 3
*
_ 1 _ 1
*
_ 1 _ 1
*
_ 1 _ 1
ZS
ZS
NS
NS
PS
PS G
I U I U I U S ⋅ + ⋅ + ⋅ ⋅ =
Measurement data – measurement methods