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8.1.2.2 Aggregation
An aggregated quantity is a value calculated over a period defined according to
the formulas indicated in Table 17.
The aggregation period always begins at the start of an hour or a minute. The
aggregation period is the same for all quantities. The following periods are
possible: 1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, and 60 min.
All aggregated quantities are recorded on the SD card during the recording
session. They can be displayed in the PEL Control Panel.
8.1.2.3 Minimum and Maximum
Min and Max are the minimum and maximum values of the "1 s" quantities for
the aggregation period considered. They are recorded with their dates and
times. The Max values of certain aggregated values are displayed directly on the
device.
8.1.2.4 Calculation of Energies
Energies are calculated every second.
Total energies are available with the data of the recorded session.
8.2 MEASUREMENT FORMULAS
Quantities
AC RMS phase-neutral
voltage (VL)
AC RMS phase-phase
voltage (UL)
AC RMS current (IL)
Active power (PL)
Power & Energy Logger Model PEL 52 - User Manual
Formulas
Table 16
Comments
v
= v
or v
incremental sample
1
2
L
N = number of samples
ab = u
incremental sample
12
N = number of samples
iL = i1, i2 or i3 incremental sample
N = number of samples
L = I1 or I2 incremental sample
N = number of samples
P
[1 s]= P
[1 s] + P
T
1
[1 s]
2
65
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