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Fault analysis can be done by consulting the 'PQF Monitoring' menu [/Welcome/PQF
Monitoring]. For more information on the 'PQF monitoring' menu, refer to
If the filter is set up for remote control operation, the local start/stop command has no
effect.
[/Welcome/Settings/Customer set./Digital inputs].
7.6
The 'Measurements' menu
The 'Measurements' menu can be accessed in the main 'Welcome' screen
[/Welcome/Measurements].
This menu allows monitoring a variety of variables (e.g. voltage, current ...) in a variety of
formats (e.g. RMS-values, spectra, time domain waveforms). Its submenus are discussed
next.
In multi-unit filters, several parameters are measured by the individual units. In order to
consult measurements from a specific unit, select the unit with the 'Select Unit' option
(where available). The order of the unit is determined by the DIP switch unit identification
setting at the moment of commissioning.
7.6.1
The 'Overview' menu [/Welcome/Measurements/Overview]
The Overview menu summarizes the following characteristic parameters
These parameters are expressed as numerical values in a list.
Parameter name
Vrms
V1
THDV
F
Irms
I1
THDI
PQF Irms
P
78 The PQF-Manager user interface ç Manual Power Quality Filter PQFS
· If the fault is permanent (e.g. permanent network under voltage due to phase
loss), it cannot be cleared and the message 'ACK. FAULT' will remain on the
display. In this case the cause of the problem has to be identified and removed
before the filter can be restarted.
· If the fault is not present anymore when the 'ACK. FAULT' command is given, the
menu will change into 'PQF START' to indicate that the filter can be restarted.
Disable
the
digital
Table 34: Summary of parameters displayed in the 'Overview' menu
Unit
V
V
%
Hz
A
A
%
A
W,
inputs
to
override
Description
4-wire mode: RMS value of all the line-to-neutral voltages
3-wire mode: RMS value of all the line-to-line voltages
4-wire mode: RMS value of the fundamental component of all
the line-to-neutral voltages
3-wire mode: RMS value of the fundamental component of all
the line-to-line voltages
4-wire mode: Total harmonic distortion of all the line-to-neutral
voltages
3-wire mode: Total harmonic distortion of all the line-to-line
voltages
Network frequency
4-wire mode: RMS value of all the line currents and the neutral
current
3-wire mode: RMS value of all the line currents
RMS value of the fundamental component of all the line
currents
Total harmonic distortion of all the line currents.
RMS value of all the filter currents
Active power in the network at the location of the CTs
Section
7.8.
the
remote
control
(Table
34).
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Troubleshooting
