ABB PQFM - Setting Up Current Transformer Ratios and Position

126 The PQF-Manager user interface  Manual Power Quality Filter PQFM
− Pressing the button in the unit ratings setup menu will result into jumping
to the next step in the menu without the values entered being taken into account.
When involuntarily entering the menu, walk through the menu. This way the menu
can be quit without modifying any values.
7.9.2.3 Setting up the current transformer ratios and position
The ratio of the current transformers connected to the filter (units) has to be entered
into the filter system.
− For single master units, this has to be done only for that master
− For filter systems consisting of more than one unit, this has to be done for all the
units of the system
Two methods can be used to do this.
− Using the automatic CT detection feature
− Entering the CT ratios and positions manually
These approaches are discussed next.
7.9.2.3.1Automatic detection of the CT positions and ratio’s