出處:Botham, G. J. M. & McNeil, J. H., 1984. 25 kV electrical multiple unit for the Kowloon-Canton Railway (British Section). Proceedings of the Institution of Mechanical Engineers, Part D: Transport Engineering, 198(1), pp. 51-61.
資料來源:A. Chui, K. K. Li and P. K. Lau, "Traction energy management in KCR", 1993 2nd International Conference on Advances in Power System Control, Operation and Management, APSCOM-93., 1993, pp. 202-208 vol.1.