| 摘要 |
<p>A trackside power distribution apparatus is disclosed which includes overlapping feeders. A first signal supply unit (200) having an input adapted to receive power from a first electrical power source and an output for supply of power to a feeder, a first portion of feeder (6a, 6b, 6c) connected to the output of the first signal supply unit and extending alongside the track to a unit (301, 302) requiring power, a second signal supply unit (201, 202, 203, 204) having an input adapted to receive power from a second electrical power source and an output for supply of power to a feeder and a second portion of feeder (7, 8, 9) connected to the output of the second signal supply unit and extending alongside the track to the said unit requiring power. A selection apparatus (403) is also provided which selects which feeder is used to supply power to a unit. The provision of the two feeder portions improves the reliability of the apparatus in the event that one power source fails.</p> |
