During commissioning and testing of the new BERNMOBIL depot, voltages of an unknown origin occurred while starting the vehicles and during short circuit tests. These voltages caused the overhead protection to trip and interfered with other equipment. BERNMOBIL commissioned ENOTRAC to determine the causes of these high voltages through measurement, and to carry out measurements during acceptance tests.
Measurements of the infrastructure had shown the vehicles were the most likely cause of the problem. The performance of both new and old vehicles was tested, in particular when starting under different network conditions.
ENOTRAC AG, Seefeldstrasse 8, 3600 Thun, Switzerland, Tel: +41 33 346 66 11
ENOTRAC SA, Avenue de la Gare 1, 1003 Lausanne, Switzerland, Tel: +41 21 623 83 00
ENOTRAC UK Ltd, Chancery House St Nicholas Way Sutton, Surrey SM1 1JB England, Tel: +44 20 8770 3501