Patent ID: 6782833
Filing Date: 2004-08-31
Classification: B60M

Abstract:
A trackside power distribution system, comprising:a) a first signal supply unit having an input for receiving power from a first electrical power source, and an output for supplying power; b) a first feeder portion connected to the output of the first signal supply unit and extending alongside a track to a unit requiring power; c) a second signal supply unit having an input for receiving power from a second electrical power source, and an output for supplying power; d) a second feeder portion connected to the output of the second signal supply unit and extending alongside the track to said unit requiring power; e) a selection apparatus for selecting which feeder portion is used for supplying power to said unit requiring power; and f) each signal supply unit comprising an uninterruptible power supply connected in series with a transformer between the respective input from the respective electrical power source and the respective output to the respective feeder portion.