track-return power system

track-return power system

[′trak ri¦tərn ′pau̇·ər ‚sis·təm]
(electricity)
A system for distributing electric power to trains or other vehicles, in which the track rails are used as an uninsulated return conductor.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.