Train GraphicClick on the map to explore geographics
I need help
About .
Travel & transport from BBC stories as at 22:35 28 May 2023
- Kenilworth Road: The throwback Luton Town stadium hosting the Premier League
- Turkish president sings to supporters from top of bus
Read about the forum [here].
Register [here] - it's free.
What do I gain from registering? [here]
 31/05/23 - WWRUG - TravelWatch SW talk
08/06/23 - Deadline - timepiece design
17/06/23 - Mere model railway show
08/07/23 - WWRUG Weymouth trip

No 'On This Day' events reported for 28th May

Train RunningCancelled
17:50 Penzance to London Paddington
20:18 Plymouth to London Paddington
20:28 Weston-Super-Mare to London Paddington
21:36 Plymouth to Exeter St Davids
22:35 Bristol Temple Meads to Westbury
23:11 Cardiff Central to Bristol Temple Meads
Short Run
20:08 Portsmouth Harbour to Cardiff Central
20:30 Cardiff Central to Portsmouth Harbour
21:08 Portsmouth Harbour to Bristol Temple Meads
21:46 London Paddington to Swansea
21:57 Worcester Foregate Street to Bristol Temple Meads
22:30 Cardiff Central to Warminster
17:37 Worcester Foregate Street to Portsmouth Harbour
18:03 London Paddington to Penzance
19:24 Swansea to London Paddington
19:46 London Paddington to Swansea
21:03 London Paddington to Exeter St Davids
21:15 Penzance to London Paddington
21:28 Penzance to Plymouth
PollsThere are no open or recent polls
Abbreviation pageAcronymns and abbreviations
Stn ComparatorStation Comparator
Rail newsNews Now - live rail news feed
Site Style 1 2 3 4
Next departures • Bristol Temple MeadsBath SpaChippenhamSwindonDidcot ParkwayReadingLondon PaddingtonMelksham
Exeter St DavidsTauntonWestburyTrowbridgeBristol ParkwayCardiff CentralOxfordCheltenham SpaBirmingham New Street
May 28, 2023, 10:48:42 pm *
Welcome, Guest. Please login or register.

Login with username, password and session length
Forgotten your username or password? - get a reminder
Most recently liked subjects
[100] Weymouth station disapointment
[99] Unhappy cycling in Melksham
[98] Return of regular train service to Swanage and Corfe Castle
[63] Reading Green Park
[56] World Cup of Stations 2023
[52] Flying Scotsman
News: A forum for passengers ... with input from rail professionals welcomed too
   Home   Help Search Calendar Login Register  
Pages: 1 [2]
Author Topic: Devon and Cornwall Branch Line Rolling stock  (Read 5262 times)
Hero Member
Posts: 493

View Profile Email
« Reply #15 on: May 14, 2021, 04:59:04 pm »

Battery charging is fairly easy to arrange on routes that are non electrified throughout.
At the terminus, and at any places where the trains remain, install a short length of conductor rail, probably* at the standard "southern" voltage of 750 volts* DC (Direct Current).
To reduce the risk of accident, place this centrally between the running rails, and render it dead except when a train is over it.

Charging rate would depend on the available electricity supply, perhaps supplemented with PV modules.
A small but 11KV supply would allow charging at 250 Kw in the dark, or at 270 KW in dull daylight, or at 350 Kw in bright sun. A 100 KW PV array would fit on a large station or other building.

To allow for stabling away from the usual locations also design for plugging in to the mains with a suitable cable. A domestic 13 amp supply is SLIGHTLY better than nothing but only slightly as charging could take a week ! Even a 13 amp supply would allow use of the internal lighting, and of a couple of vacuum cleaners for servicing without any battery discharge.
A 3 phase 32 amp supply, available almost everywhere, would give a significant charge overnight.

*Or possibly a lower voltage since this would use standard transformers.
11 Kv transformers with a three phase 4 wire output at 250/433 volts are a low priced commodity item as vast numbers are used to provide the standard 230/400 volt supply used everywhere. Two such transformers, one with reversed polarity would produce a 6 phase supply, easy to rectify and connect to the conductor rail.
Apart from low cost, the other merits are that standard, off the shelf, grid tie PV inverters may be used to connect PV modules, and it MIGHT be acceptable to use the same transformers to supply other loads.

Would the short turn round times on the branches allow enough time for a charge or even a boost if the train had been charging overnight in a depot.
Transport Scholar
Hero Member
Posts: 5181

View Profile
« Reply #16 on: May 17, 2021, 07:36:57 am »

Even a short layover would help.
If a 250 Kw supply was available, then six minutes would give 25 KWH, a useful supplement to a full charge overnight. Ten such layovers per day would be a significant charging input.

And no I am not considering a career with the promoters. Whilst I see considerable merit in their proposals, I am rather doubtful that it will ever happen.

A proper intercity train has a minimum of 8 coaches, gangwayed throughout, with first at one end, and a full sized buffet car between first and standard.
It has space for cycles, surfboards,luggage etc.
A 5 car DMU (Diesel Multiple Unit) is not a proper inter-city train. The 5+5 and 9 car DMUs are almost as bad.
Do you have something you would like to add to this thread, or would you like to raise a new question at the Coffee Shop? Please [register] (it is free) if you have not done so before, or login (at the top of this page) if you already have an account - we would love to read what you have to say!

You can find out more about how this forum works [here] - that will link you to a copy of the forum agreement that you can read before you join, and tell you very much more about how we operate. We are an independent forum, provided and run by customers of Great Western Railway, for customers of Great Western Railway and we welcome railway professionals as members too, in either a personal or official capacity. Views expressed in posts are not necessarily the views of the operators of the forum.

As well as posting messages onto existing threads, and starting new subjects, members can communicate with each other through personal messages if they wish. And once members have made a certain number of posts, they will automatically be admitted to the "frequent posters club", where subjects not-for-public-domain are discussed; anything from the occasional rant to meetups we may be having ...

Pages: 1 [2]
Jump to:  

Powered by MySQL Powered by PHP Powered by SMF 1.1.2 | SMF © 2006-2007, Simple Machines LLC Valid XHTML 1.0! Valid CSS!
This forum is provided by customers of Great Western Railway (formerly First Great Western), and the views expressed are those of the individual posters concerned. Visit for the official Great Western Railway website. Please contact the administrators of this site if you feel that the content provided by one of our posters contravenes our posting rules (email link to report). Forum hosted by Well House Consultants

Jump to top of pageJump to Forum Home Page