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Power Logger
Function Selection Buttons
23
Harmonics Spectrum Relative to Harmonic Limits
This feature is available on 1738 or 1736 with 1736/Upgrade on
installation of the IEEE 519/Report license. The screen shows the
harmonics relative to the individual limit defined by a user-selected
standard. The standard is selected in the Measurement Configuration.
Each bar is green when the measurement is below the individual limit
for this harmonic or THD, otherwise, the bar turns red. The number of
displayed harmonics varies in accordance with the selected standard.
Note
This screen provides quick feedback about the harmonic
levels compared to Power Quality standards. It is no proof of
compliance to the standard. The average calculation interval
of 1 second is much more frequent compared to the
10 minutes required by applicable standards. A limit violation
in this screen does not necessarily result in a standards
violation. For example, when the measurement values
surpass the maximum allowed tolerance during a short time
period. Use the feature to record data in logging sessions and
perform standard compliance measurements. For more
information, see Logging Sessions on page 47.
The side menu in the harmonics screens has dual use. First, select
the parameter to display and confirm with
. The selector bar jumps
to the lower section for the phase selection. The number of available
phases and the Neutral current depends on the selected topology.
See Measurement Configuration below for details. Make your choice
and confirm again with
.
Some screens do not include (Show Menu) to access the side
menu. Use / instead.
Measurement Configuration
Use the Change Configuration touch button to access the
measurement configuration screen. The configuration screen allows
you to change the parameters for:
•
Study type
•
Topology
•
Nominal voltage
•
Current range
•
Scale factors for external PTs or CTs
•
Nominal Frequency
•
Auxiliary input configuration
•
Review the voltage event limits
•
Configure the inrush current limit
•
Select the standard for harmonics compliance assessment
(available on 1738 or 1736 with 1736/Upgrade or IEEE 519/Report
license)
Use to navigate between the sub-screens.
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