This Controller automatically or proactively measures the impedance of the feed line to the board.
Each electrical board is connected to 5 supply conductors:
3 phases, neutral and grounding, each of one of them has a different impedance.
This impedance is basically what determines the maximum and minimum short-circuit currents that will be generated when there is a short in the board.
The GES-LT system performs a test that measures the impedance of each of the above conductors individually and inserts this data into the tables and graph on the timeline (see photo from the software)
The GES-LT comes as an extension to the basic GES System and is not a standalone controller.