Cable fault location in a pumped storage hydropower station
Fault finding in the interior of a mountain
Robert L’Eplattenier, test engineer and CEO of Gasenzer AG, often travels “in the field” and is even more often in the Swiss mountains. In February 2015, one job took him literally into the mountains. In the underground pumped storage hydropower station Grimsel II of Oberhasli AG Power Works, a medium-voltage cable in the power derivation of a 100 MVA generator was faulty.