1.3 Calculation Formulas
7
HIOKI
(1) Load Factor [%]
(Displayed by using summing results from a daily, weekly, or monthly report screen)
• Average active power is the average of all active power measurements
during the summing period. The maximum demand value is the largest
among all demand values during the period. The summing period is one
day for a daily report, seven days for a weekly report, and one month for a
monthly report. The load factor above represents the degree of fluctuations
of electricity demand during summing period.
(2) Demand Factor [%]
(Displayed by using summing results from a daily, weekly, or monthly report screen)
• The maximum demand value is the largest among all demand values dur-
ing the summing period. The summing period is one day for a daily report,
seven days for a weekly report, and one month for a monthly report.
• The facility capacity is set in the Load data file dialog. Click
File
on the
menu bar, and then select
Load
file to open the dialog. This demand fac-
tor shows how much power is used at maximum in terms of the percentage
of facility capacity.
(3) Voltage Unbalance Factor Uunb [%]
(Displayed only for the data measured in the 3P3W2M or 3P3W3M mode by the
3169-20/21)
U
1,
U
2,
U
3
: Line to line voltage (instantaneous or average values)
• This voltage unbalance factor represents the degree of voltage unbalance
between three phase lines.
1.3 Calculation Formulas
Load factor =
Average active power [kW]
Maximum demand value [kW]
X 100 [%]
Demand factor =
Maximum demand value [kW]
Facility capacity [kW]
X 100 [%]
Voltage unbalance factor
U
unb
=
U
b
U
a
X
100 [%]
(
)
(
)(
)(
)
3
2
1
3
2
3
2
1
6
1
s
s
s
s
2
2
2
a
U
U
U
U
U
U
U
U
U
U
U
−
−
−
+
+
+
=
(
)
(
)(
)(
)
3
2
1
3
2
3
2
1
6
1
s
s
s
s
2
2
2
b
U
U
U
U
U
U
U
U
U
U
U
−
−
−
−
+
+
=
2
3
2
1
s
U
U
U
U
+
+
=
Содержание 9625
Страница 1: ...POWER MEASUREMENT INSTRUCTION MANUAL 9625 SUPPORT SOFTWARE...
Страница 2: ......
Страница 14: ...8 1 3 Calculation Formulas HIOKI...
Страница 24: ...18 2 4 Loading Saving Data HIOKI...
Страница 66: ...60 HIOKI...
Страница 70: ...64 HIOKI...
