Manual
ibaPQU-S
24
Issue 1.3
8.2
Signals and calculated characteristic values
The following table shows the required measured quantities depending on the grid type.
Based on the measurements, all characteristic values are calculated which are needed
to assess the power quality.
Measured quantities
1-phase
3-phase without N/PE
3-phase with N/PE
U1
U12, U23, U31
U1, U2, U3
I1
I1, I2, I3
I1, I2, I3
Calculated characteristic values
Characteristics
values
Calculation time
Available
for
Grid type
(conductor)
Calculation
interval
Half
pe-
riod
10
/
12
150
/
180
10 s
10
min
2 h
U
I
U*I
1
3
3+N Phase
Grid
RMS value
1
X
X
X
X
X
X
X
X
-
X
X
X
X
-
Peak value
1
X
X
X
X
X
X
X
X
X
X
X
X
X
-
Rectified value
1
X
X
X
X
X
X
X
X
-
X
X
X
X
-
Form factor
1
-
X
X
X
X
X
X
X
-
X
X
X
X
-
Crest factor
1
-
X
X
X
X
X
X
X
-
X
X
X
X
-
Frequency
2
X
X
X
X
X
X
X
X
-
X
X
X
X
X
Phase angle
6
-
X
X
X
X
X
X
X
-
X
X
X
X
-
Harmonics
1
-
X
X
X
X
X
X
X
X
X
X
X
X
-
Interharmonics
1
-
X
X
X
X
X
X
X
X
X
X
X
X
-
THD
3
-
X
X
X
X
X
X
X
X
X
X
X
X
-
TIF
1
-
X
X
X
X
X
X
X
-
X
X
X
X
-
Mains signalling
voltage
1
-
X
X
X
X
X
X
-
-
X
X
X
X
-
Power
1
-
X
X
X
X
X
-
-
X
X
X
X
X
X
Energy
4
-
X
X
X
X
X
-
-
X
X
X
X
X
X
Apparent power
1
-
X
X
X
X
X
-
-
X
X
X
X
X
X
Apparent energy
4
-
X
X
X
X
X
-
-
X
X
X
X
X
X
Reactive power
1
-
X
X
X
X
X
-
-
X
X
X
X
X
X
Reactive energy
4
-
X
X
X
X
X
-
-
X
X
X
X
X
X
Reactive power
with sign
1
-
X
X
X
X
X
-
-
X
X
X
X
X
X
Explanation: X = available - = not available
1
Quadratic average of 10/12 period values
2
Direct calculation from raw values for all above-listed calculation times
3
Calculation from the harmonics of the listed calculation time
4
Aggregation based on calculation time
5
No aggregation
6
Phase of the 10/12 FFT sum vector
Содержание PQU-S
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