96
Power Quality Analyzer Model 3945-B
K Factor
[]
[][ ]
i
Akf
K factor for the i + 1 phase
n=50
1
2
n
2
n
i
Aharm
n
∑
=
[][ ]
n=50
1
2
n
i
Aharm
n
∑
=
=
Different Power Levels 1 Sec
[]
[][ ]
i
W
VA[
i
] = Vrms[
i
] Arms[
i
] Apparent power i + 1 phase
VAR[
i
] =
or VAR[
i
] = VA[
i
] – W[
i
] if computation method is with harmonics
Active power i + 1 phase
NSS-1
0
n
V i
n
.
.
.
∑
=
[][ ]
n
A i
=
1
NSS
[][
]
Reactive power i + 1 phase
NSS-1
0
n - NSC /
4
VF i
n
.
∑
=
[][ ]
n
AF i
1
NSS
2
2
W[3] = W[0] + W[1] + W[2]
Total active power
VA[3] = VA[0] + VA[1] + VA[2]
Total apparent power
VAR[3] = VAR[0] + VAR[1] + VAR[2]
Total reactive power