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Updated: 18 June 2017


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The following originally appeared on Tony Woof's personal website and provides a good guide to the technology used on British Mainline Electric Stock.  Whilst Tony's website is no longer active, we have been given permission to reproduce the content.  The content of this page remains copyright Tony Woof and may not be reproduced elsewhere without prior permission.

What’s Got What

A guide to equipment employed on British Mainline Electric Stock

 

73

86
87

87/1
90
91

88

92

 

220
221
222

 

303
305
308
309
310
312

313

314
315

317
318
320
321
322

323

319
325

321T
323T
332
333
334
345
350/2
350/3
350/4
357
360
379
380
385
390
710/1

350/1
375/6
377/2
377/5
377/7
378/2
387
395
700
710/2

365

 

411
412
421
422
423
442
455
483

456

375/3
375/7
375/8
375/9
376
377/1
377/3
377/4
378/1
444
450
455T
458
460
465/0
465/1
707

465/2
465/9
466

507
508

 

373

374

 

800
801

DC Supply

X

 

 

 

X

 

 

 

 

X

 

 

 

X

 

X

X

 

X

X

X

X

X

 

D

E

 

 

AC Supply

 

X

X

X

X

 

 

 

X

X

X

X

X

X

X

X

X

 

 

 

 

 

 

 

X

X

 

X

Diesel

X

 

 

X

 

 

X

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

X

DC Motors

X

X

X

 

 

 

 

 

X

X

X

X

 

X

 

 

 

 

X

X

 

 

X

 

 

 

 

 

AC Motors

 

 

 

X

X

 

X

 

 

 

 

 

X

 

X

X

X

 

 

 

X

X

 

 

X

X

 

X

Camshaft Resistance Control

X

 

 

 

 

 

 

 

 

X

 

 

 

 

 

 

 

 

X

 

 

 

X

 

 

 

 

 

Tap Changer

 

X

 

 

 

 

 

 

X

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Fixed Transformer

 

 

X

X

X

 

 

 

 

X

X

X

X

X

X

X

X

 

 

 

 

 

 

 

X

X

 

X

Diode Bridge

 

X

 

 

 

 

 

 

X

X

 

 

 

X

 

 

X

 

 

 

 

 

 

 

 

 

 

 

Thyristor Bridge

 

 

X

 

 

 

 

 

 

 

X

X

 

 

 

 

 

 

 

 

 

 

 

 

X

 

 

 

GTO Chopper

 

 

 

 

 

 

 

 

 

 

 

 

 

X

 

 

 

 

 

X

 

 

 

 

C

 

 

 

GTO Inverter

 

 

 

 

X

 

 

 

 

 

 

 

X

 

 

 

X

 

 

 

 

X

 

 

X

 

 

 

IGBT Inverter

 

 

 

X

 

 

X

 

 

 

 

 

 

 

X

X

 

 

 

 

X

 

 

 

 

X

 

X

GTO Force Commutated Bridge

 

 

 

 

X

 

 

 

 

 

 

 

X

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

IGBT Force Commutated Bridge

 

 

 

X

 

 

 

 

 

 

 

 

 

 

X

X

 

 

 

 

 

 

 

 

 

X

 

X

Rheostatic Brake

 

X

X

X

X

 

X

 

 

X

 

 

X

 

X

X

X

 

 

 

X

X

X

 

X

X

 

X

DC Regenerative Brake

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

X

R

 

 

 

X

R

 

 

 

X

 

 

AC Regenerative Brake

 

 

 

?

 

 

 

 

 

 

 

 

X

 

X

X

 

 

 

 

 

 

 

 

 

 

 

X

C = GTO chopper on Class 373 used on Belgian 3000V DC supply.
D = UK 750V DC supply capability has been disabled. 3000V DC overhead supply. Some units also 1500V DC overhead supply.
E = 1500V and 3000V DC overhead supply.
R = Has DC regenerative brake capability but not presently in use.
xxx = Class withdrawn.
xxxT = Units fitted with updated traction equipment.

Tony Woof  B Eng C Eng MIEE
Copyright 1998, 2001, 2002, 2005, 2017