Hioki PW3336-01, Instruction Manual

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5.5 Calculation Formulas Specifications
167
Fundamental wave power factor
Voltage and current calculated using their respective vector calculations are used for CH3 in 3P3W2M connections and
all channels in 3P3W3M connections.
(i): Measurement channel; k: Analysis order; K: Maximum analysis order; r: Real part after FFT; i: Imaginary part after FFT;
sic: Polarity symbol, assigned based on the fundamental wave reactive power Q
1(i)
polarity
Symbol [None]: Current lags voltage (LAG).
Symbol [-]: Current leads voltage (LEAD).
Power channel and sum value calculation formulas
Wiring
Item
1P2W 1P3W 3P3W 3P3W2M 3V3A 3P3W3M 3P4W
All channels Sum values
Active power
Basic calculation
formulas
Pk
(i)
Item
Wiring
Fundamental wave apparent power Fundamental wave reactive power
All channels 1P2W
Basic calculation formula
S
1(i)
Basic calculation formula
Q
1(i)
Sum values
1P3W
3P3W
3P3W2M
3V3A
3P3W3M
3P4W
Item
Wiring
Fundamental wave power factor
Fundamental wave voltage current phase
difference
All channels 1P2W
Basic calculation formula
λ
1(i)
Basic calculation formula
ϕ
1(i)
Sum values
1P3W
3P3W
3P3W2M
3V3A
3P3W3M
3P4W
The polarity symbol si
sum
is acquired from the Q
sum
symbol.
Item Calculation formulas
|
φ
cos | sic
λ
) i ( 1 ) i ( 1
=
) 2 ( k ) 1 ( k ksum
P P P
+ =
) 3 ( k ) 2 ( k ) 1 ( k ksum
P P P P
+ + =
2
sum 1
2
sum 1 sum 1
Q P S + =
) 2 ( 1 ) 1 ( 1 sum 1
Q Q Q
+ =
) 3 ( 1 ) 2 ( 1 ) 1 ( 1 sum 1
Q Q Q Q
+ + =
|
φ
cos | si
λ
sum 1 sum sum 1
=
)
P
Q
( tan
φ
sum 1
sum 1
1
sum 1
−
=