SMY133-SMY134-SMP133 Operating Manual
Apparent power :
S
1
=
U
1
∗
I
1
Distortion power :
D
1
=
√
S
1
2
−
P
1
2
−
Q
1
2
Power factor :
PF
1
=
|
P
1
|
S
1
Three-phase active power: :
∑
P
=
P
1
+
P
2
+
P
3
Three-phase reactive power :
∑
Q
=
Q
1
+
Q
2
+
Q
3
Three-phase apparent power :
∑
S
=
S
1
+
S
2
+
S
3
Three-phase distortion power :
3
D
=
√
3
S
2
−
3
P
2
−
3
Q
2
Three-phase power factor :
∑
PF
=
|
∑
P
|
∑
S
Fundamental harmonic component quantities :
Fundamental harmonic power factor :
(or
, Δφ
1
)
Fundamental harmonic active power :
Pfh
1
=
Ufh
1
∗
Ifh
1
∗
cosΔφ
1
Fundamental harmonic reactive power :
Qfh
1
=
Ufh
1
∗
Ifh
1
∗
sinΔφ
1
Fundamental harmonic three-phase active power :
∑
Pfh
=
Pfh
1
+
Pfh
2
+
Pfh
3
Fundamental harmonic three-phase reactive power :
∑
Qfh
=
Qfh
1
+
Qfh
2
+
Qfh
3
Fundamental harmonic three-phase power factor :
∑
cosΔφ
=
cos
(
arctg
(
∑
Qfh
∑
Pfh
))
Powers and power factors of the fundamental harmonic component (cos φ) are evaluated in 4
quadrants in compliance with the standard IEC 62053 – 23, apendix C :
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