Power Logger
Function Selection Buttons
21
Study Type
Depending on the application, select either Load Study or
Energy Study.
• Energy Study: Select this study type when voltage
measurements for a power quality assessment and
power and energy values that include active power
(W) and PF are required.
• Load Study: For convenience, some applications
require you to measure only the current that makes the
connection to the point to measure.
Typical applications are:
- Verify the circuit capacity before adding additional
load.
- Identify situations where the allowable load can be
exceeded.
Optionally, a nominal voltage can be configured to get
pseudo-apparent power readings.
Power Quality
Select the power quality standard (available on 1738 or
1736 with 1736/Upgrade or IEEE 519/Report license) for
compliance evaluation.
EN 50160: voltage characteristics of electricity
supplied by public distribution networks.
The Logger supports these parameters:
• Frequency
• Voltage Variations
• Voltage Harmonics and Voltage THD
• Unbalance
• Events
IEEE 519: recommended practice and requirements for
harmonic control in electric power systems.
The standard defines limits for voltage harmonics, voltage
THD, current harmonics and TDD (total demand
distortion). The limits for current harmonics and TDD
depend on the ratio of maximum demand load current I
L
to
the short circuit current I
SC
. Set the values with and
.
Note
If the values of
I
SC
and
I
L
are not currently
available, you can update these values at a later
time with the Energy Analyze Plus software.
Set the Harmonics Standard to off when the harmonics
compliance evaluation is not required.
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General
Weight and Dimensions
