Operating instructions multicomp
Page 22 of 29 Version 1.00
EDEBDA0144 / 0511-1 GB
7.9 Window Extras
Selection of submenus with button
W
.
In the submenus of this window, the additional settings possible are displayed.
If a submenu is selected (using the button
W), the settings can be changed by pressing the button U to start
entering values,
V to change the setting and X to save it.
The following submenus are available:
Language:
In this submenu, you can choose the language of the LCD.
THD limit:
The limiting value of the harmonic switch-off refers on one hand to the total of all measurement voltage
harmonics. The programming range lies between 0 and 10%. The setting is done in steps of 1%.
In addition, harmonics monitoring can be disabled here (for configuration limit = 0).
For voltage harmonics exceeding the limit, error messages are displayed and a stage disconnect is
performed.
Limit switching cycles:
The limiting value of the capacitor contactor switching cycles is used as an indication for customers that
due to the number of switching actions accumulated, the capacitor contactor could be worn out. This
message in no way influences the function of the compensation facility. It is used merely as a
"maintenance note".
Manual switching operations are not counted.
Scanning frequency:
In this submenu, the power frequency tracing settings are displayed. The setting Auto causes the
scanning frequency to be traced automatically, within a range of 40 to 70 Hertz. Alternatively, a fixed
scanning frequency of 50 Hz or 60 Hz can be set.
Monitoring stage power:
In this submenu, the monitoring of the stage power can be enabled or disabled. However, only stages in
automatic operation can be monitored.
The stage power configured manually is not taken into account, as it is assumed that the stage power
has been configured in accordance with the nameplate of the compensation stage.
Operating mode: Each time a capacitor stage is switched on, it is checked whether or not a change of
current takes place in the series transformer. If this is not the case, the stage is marked with an
X in the
start menu window. The following reasons are possible and have to be checked:
• Capacitor defective
• Contactor defective
• Fuse defective
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