1736/1738
Users Manual
20
to select the parameter of interest. Push (Trend
only) to expand the trend chart to full screen.
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 about how to start a logging
session, see page 32.
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. Refer to
Measurement Configuration for details. Make your choice
and confirm again with .
Some screens do not include (Show Menu) to
access the side menu. Use the cursor keys 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
• 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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