ABB PQFA, Instruction Manual

Page: 91 / 98

PQFA Instructions Manual
Asea Brown Boveri Jumet S.A.
91
11.2. Troubleshooting
11.2.1. Frequent problems occurring at commissioning stage
Problems occurring at commissioning stage are mainly due to wrong CT
connection or CT bridges not removed. Check carefully those connections in
accordance with the commissioning procedure.
FAULT Possible causes Solutions
No filtering nor reactive
power compensation
-
All CT’s are in
correct phases but
some are reversed
-
Wrong phase
rotation
- CT bridges not
removed
-
Check carefully CT
wiring
-
Remove CT bridges
on CT secondary
and PQFA terminal
input
No dynamic reactive
power compensation All CT’s are in correct
phases but all are
reversed - Modify CT
connection
accordingly, or
- Reversed CT’s may
be corrected by
software: a negative
CT ratio has to be
specified.
11.2.2. Error codes and messages
After a filter trip, an error message is displayed on the PQF-Manager. At the
same time, the corresponding error code is stored in the filter controller’s
permanent memory. The error codes can be accessed by PQF-Prog users
that have the appropriate password such as ABB service personnel. Below is
explained how the error messages can be accessed with the PQF-Manager.
If your filter is not fitted with this option, contact your ABB service provider for
further support.
In order to access the error code in the PQF-Manager, press MENU to access
the “Main menu” window.
Select level 1 by using once the ? key.
Then press OK.
MAIN MENU
? Level 1?
Level 2
Level 3