Electrical power supply system for e.g. electrical bus, has protection unit protecting electrical power supply rail elements and current collector from electric arc, when current collector leaves electrical power supply rail elements

摘要

The system has a power supply unit (80) for controlling distribution of energy between a traction chain (70), storage unit (60) and a ground-level power supply using a controller (85). The power supply unit is connected to current collectors (51, 52) embarked in a vehicle (30). A protection unit (40) or protection unit (50) protects electrical power supply rail elements (42, 42') and the current collector (52) from electric arc, when the current collector leaves an electrical power supply rail elements.