Manual Power Quality Filter PQFM
The PQF-Manager user interface 165
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The CT settings:
The CT settings can in many cases be automatically detected or can be entered
manually.
Section 8.6
discusses the automatic and manual CT detection
procedure.
When using the automatic CT identification procedure, the filter will
automatically deactivate any harmonics and reactive power/balancing settings
that may have been made prior to starting the identification procedure. The
commissioning engineer must reprogram these settings as discussed later in
this procedure.
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The Rating parameter:
If the filter is installed at locations higher than 1000m /3300ft or is running under
ambient temperature conditions higher than 40°C/104°F, the filter has to be
derated. For more information on how to calculate the derating required and how
to enter the rating value, refer to
Section 7.9.2.4
Remarks:
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Although the user requirements for harmonic filtering and reactive power
compensation/balancing can be set up from the commissioning window this
should not be done before the filter has been started successfully for the first
time (Cf.
Section 8.7
).
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If digital I/O and/or the alarm contact have been cabled on the PQF-Manager, the
appropriate software settings have to be made. This has to be done in the
‘Customer settings’ menu ([/Welcome/Settings/Customer set.]). Refer to
Section 7.9.1.4
for detailed information on how to set up digital I/O, alarms and
warnings. In order to achieve full redundancy with master-master filters, the
digital I/O have to be cabled to all master units and all the PQF-Managers have to
be set up accordingly.
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In order to change the temperature unit used by the system, go to
[/Welcome/Settings/Customer set./Temp unit].
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For setting up advanced filter functions such as the autorestart feature (after
power outage), the filter standby feature (which stops the IGBTs when the load
requirement is low), the system clock, the external communication protocol
(Modbus or PC) and the software lock, refer to
Section 7.9.3
.
In order to achieve
full redundancy for the communication features in master-master filters, this
function has to be cabled to all master units and all the PQF-Managers have to be
set up accordingly.
If the CTs have been set up correctly at this stage, go to step 6 (
Section 8.7
Otherwise, consult go to step 5 for background information on the automatic and
manual CT detection procedure.
