By Topic

Design considerations for 25 kV traction-supply transformers

Sign In

Cookies must be enabled to login.After enabling cookies , please use refresh or reload or ctrl+f5 on the browser for the login options.

Formats Non-Member Member
$33 $33
Learn how you can qualify for the best price for this item!
Become an IEEE Member or Subscribe to
IEEE Xplore for exclusive pricing!
close button

puzzle piece

IEEE membership options for an individual and IEEE Xplore subscriptions for an organization offer the most affordable access to essential journal articles, conference papers, standards, eBooks, and eLearning courses.

Learn more about:

IEEE membership

IEEE Xplore subscriptions

2 Author(s)
J. G. Farr ; Hawker Siddeley Power Transformers Ltd., Forest Works, London, UK ; A. C. Hall

Increasing attention has been shown in recent years in the a.c. electrification of railway traction systems and a number of established systems now exist throughout the world. Where the traction system is supplied directly from a high-voltage national-grid network, a common component of such schemes is a step down transformer connection between the two systems. The electrical, mechanical and thermal design of these transformers is subject to a number of special considerations not normally encountered in the design of distribution-type transformers of similar rating and voltage class. The paper reviews the operating conditions peculiar to railway traction such as overvoltages, short circuits, cyclic and peak loadings and discusses how these conditions influence the design and construction of single-phase transformers supplying power for traction purposes. The paper describes the engineering practice and operating experience obtained with the British 25 kV a.c. railway-traction system in particular, but much of the system and transformer-design philosophy and operational experience referred to applies to a.c. traction systems elsewhere in the world.

Published in:

Electrical Engineers, Proceedings of the Institution of  (Volume:122 ,  Issue: 7 )