ABB SACE Tmax XT7 Operation And Maintenance Manual page 127

THD Voltages and Currents Certain counters relating to harmonic distortion are available in the Counters - Day -1 and Counters -
Waveforms The Network Analyzer - Waveforms menu provides graphic representations of:
125 | © 2020 ABB | 1SDH001821A1002 - ECN000135670
Cumulative submenus:
Counters (Swells Long)
THD Voltages
THD Current
NOTE: the counters saturate at 65535 minutes (45 days); they can be reset by a service
connector command (via Ekip Connect) or via communication from the system bus
Additional List
Counters (Swells Long)
Actual minutes
Actual [day -2 ... day -7]
number of THD C.
Counters (Swells Long)
Actual minutes
Actual [day -2 ... day -7]
number of THD C.
• phase currents L1, L2, L3, Ne (for units configured with 4 phases)
• line-to-line voltages V12, V23, V31
When one of the available quantities is selected, Ekip Touch acquires and displays the waveform
Figure 36
The detected waveform and the value at the time of selection are displayed in the window that appears. A
new waveform and the relative measurement can be acquired with the Refresh command (1).
Harmonics
The waveform window will propose the Harmonics (2) command if harmonic analysis of currents and/or
voltages has been selected. This command accesses the histogram of the harmonics (relating to the grid
frequency set in the menu) that make up the waveform.
Figure 37
Touch the sides of the display to scroll the harmonics after (3) and before (4) the selected harmonic, displayed
on a flashing graph with value shown in the center of the page. The command for exiting the page is at the
top left (5).
Description
Counts the total number of minutes in which total distortion exceeds
current threshold THD Threshold
Counts the total number of minutes in which total distortion exceeds
voltage threshold THD Threshold
Description
THD Current count for the current day [min]
THD Current count of the last seven days of activity, calculated using
the internal clock of the unit
Description
THD Voltages count for the current day [min]
THD Voltages count of the last seven days of activity, calculated using
the internal clock of the unit
ABB | SACE Tmax XT
Ekip Touch - Measurements | 5 - Network Analyzer