5.5 Calculation Formulas Specifications
164
(3) Power calculation formulas
Item (RECTIFIER)
Calculation formulas
Active power
(AC+DC, AC+DC Umn)
Active power simple average value
(DC)
Active power AC component (AC)
Fundamental wave active power
(FND)
P
1(i)
from harmonic calculation formula
Apparent power
(AC+DC, AC, AC+DC Umn)
Calculated values from the respective rectifiers are used for
U
(i)
and
I
(i)
.
(For AC+DC Umn, the AC+DC value is used for current.)
Fundamental wave apparent power
(FND)
S
1(i)
from harmonic calculation formula
Reactive power
(AC+DC, AC, AC+DC Umn)
Calculated values from the respective rectifiers are used for
P
(i)
and
S
(i)
.
Fundamental wave reactive power
(FND)
Q
1(i)
from harmonic calculation formula
Power factor
(AC+DC, AC, AC+DC Umn)
Calculated values from the respective rectifiers are used for
P
(i)
and
S
(i)
.
Fundamental wave power factor
(FND)
λ
1(i)
value from harmonic calculation formula
Phase angle (AC)
Calculated values from the respective rectifiers are used for
λ
(i)
.
Fundamental wave voltage current
phase difference (FND)
ϕ
1(i)
from harmonic calculation formula
(i): Measurement channel; M: Number of samples between synchronized timing points; s: Number of sample points; si
(i)
:
Polarity symbol, acquired based on voltage waveform and current waveform lead and lag for each measurement channel
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 calcula-
tion formula
P
(i)
∑
=
×
=
1
M
0
s
s
)
i
(
s
)
i
(
)
i
(
)
i
u
(
M
1
P
−
)
i
(
DC
)
i
(
DC
)
i
(
DC
I
U
P
×
=
)
i
(
DC
)
i
(
)
i
(
AC
P
P
P
−
=
)
i
(
)
i
(
)
i
(
I
U
S
×
=
2
)
i
(
2
)
i
(
)
i
(
)
i
(
P
S
si
Q
−
=
)
i
(
)
i
(
)
i
(
)
i
(
S
P
si
λ
=
When
P
AC(i)
≥
0
)
i
(
1
)
i
(
)
i
(
λ
cos
si
φ
−
=
(0° to ±90°)
−
−
)
i
(
1
)
i
(
)
i
(
λ
cos
180
si
φ
=
When
P
AC(i)
<
0
(±90° to ±180°)
)
2
(
)
1
(
sum
P
P
P
+
=
)
3
(
)
2
(
)
1
(
sum
P
P
P
P
+
+
=
Содержание PW3336-01
Страница 2: ......
Страница 6: ...Contents iv...
Страница 16: ...Operating Precautions 10...
Страница 32: ...1 4 Measurement Workflow 26...
Страница 44: ...2 7 Turning Off the Instrument 38...
Страница 180: ...5 6 Wiring Specifications 174 3 3 phase 3 wire 3P3W 3P3W2M 4 3 phase 3 wire 3V3A 3P3W3M Current sensor...
Страница 181: ...5 6 Wiring Specifications 175 5 3 phase 4 wire 3P4W Current sensor...
Страница 182: ...5 6 Wiring Specifications 176...
Страница 199: ...Appendix 4 Dimensional Diagram A13 e g PW3337 03 Appendix 4 Dimensional Diagram Unit mm...
Страница 200: ...Appendix 4 Dimensional Diagram A14...
Страница 203: ......
Страница 204: ......
Страница 205: ......
Страница 206: ......
