Train Graphic
Great Western Passengers' Forum
from GWR - Travel with confidence
Forum in and beyond Coronavirus
Great Western Coffee Shop
[home] and [about]
Read about the forum [here].
Register [here] - it's free.
What do I gain from registering? [here]
 tomorrow - Initial Emergency Measures end
23/09/20 - ConnectedCities Oxford, ONLINE
24/09/20 - Reform Pub Trans / Closes
26/09/20 - Railfuture Severnside - CANX
Random Image
Train Running Polls Acronyms/Abbreviations Station Comparator Rail news GWR co. site Site Style 1 2 3 4
Next departures • Bristol Temple MeadsBath SpaChippenhamSwindonDidcot ParkwayReadingLondon PaddingtonMelksham
Exeter St DavidsTauntonWestburyTrowbridgeBristol ParkwayCardiff CentralOxfordCheltenham SpaBirmingham New Street
September 19, 2020, 01:22:01 pm *
Welcome, Guest. Please login or register.

Login with username, password and session length
Forgotten your username or password? - get a reminder
Most liked recent subjects
[106] Chris Grayling does it again - and is now gone
[75] Paths west of Plymouth
[64] Beyond current Emergency Measures - where will we be on 21st S...
[44] HS2 - Government proposals, alternative routes and general dis...
[36] Southern Rail staff suspended
[33] IETs into passenger service from 16 Oct 2017 and subsequent pe...
News: A forum for passengers ... with input from rail professionals welcomed too
 
   Home   Help Search Calendar Login Register  
Pages: 1 2 3 [4] 5 6 ... 70
  Print  
Author Topic: Great Western Main Line electrification - ongoing discussion  (Read 153893 times)
John R
Hero Member
*****
Posts: 4416


View Profile
« Reply #45 on: July 27, 2017, 03:12:23 pm »

Did that from Penzance to London in 2001 to avoid a long journey with a 2 and 4 year old back to Bedfordshire. Very pleasant it was too.  Even ended up going through MKM if I recall due to a diversion.   
Logged
lbraine
Sr. Member
****
Posts: 124


View Profile
« Reply #46 on: August 03, 2017, 07:23:25 am »

Observation from this AMs run into PAD.

The relief line wires are up and continuous between Didcot and Maidenhead. The OHLE contractor must have pushed very hard to fill in the gaps between Reading and Maidenhead.

And when I say wires up - I do mean everything, not just the wires hanging from the dangly bits.

So with infrastructure in place (energised ?) GWR can commit to 385's taking over from Turbos, which can start the Big Cascade! Right ?
Logged
Rhydgaled
Hero Member
*****
Posts: 1406


View Profile WWW
« Reply #47 on: August 03, 2017, 09:06:14 am »

Observation from this AMs run into PAD.

The relief line wires are up and continuous between Didcot and Maidenhead. The OHLE contractor must have pushed very hard to fill in the gaps between Reading and Maidenhead.

And when I say wires up - I do mean everything, not just the wires hanging from the dangly bits.

So with infrastructure in place (energised ?) GWR can commit to 385's taking over from Turbos, which can start the Big Cascade! Right ?
What about the main lines, are only the reliefs wired so far? And I don't think GWR have any plans to use 385s; I think the GWR EMUs are 387s aren't they?
Logged

----------------------------
Don't DOO it, keep the guard (but it probably wouldn't be a bad idea if the driver unlocked the doors on arrival at calling points).
ChrisB
Transport Scholar
Hero Member
******
Posts: 10223


View Profile Email
« Reply #48 on: August 03, 2017, 09:16:06 am »

I thought they'd been testing the 800s on the wires to DID for a little while now, not just to MAI?
Logged
Rhydgaled
Hero Member
*****
Posts: 1406


View Profile WWW
« Reply #49 on: August 03, 2017, 09:28:47 am »

I thought they'd been testing the 800s on the wires to DID for a little while now, not just to MAI?
Didcot to Reading was the 'test track' section for the class 800s, so that section has been wired for a while but when the PAD to Maindenhead EMU services started there was still a gap between Maindenhead and Reading that was not yet electrified. No idea if that is still the case, as I try to avoid London.
Logged

----------------------------
Don't DOO it, keep the guard (but it probably wouldn't be a bad idea if the driver unlocked the doors on arrival at calling points).
ChrisB
Transport Scholar
Hero Member
******
Posts: 10223


View Profile Email
« Reply #50 on: August 03, 2017, 09:31:47 am »

oh, ok, thanks for that
Logged
stuving
Transport Scholar
Hero Member
******
Posts: 4956


View Profile
« Reply #51 on: August 03, 2017, 09:40:54 am »

Observation from this AMs run into PAD.

The relief line wires are up and continuous between Didcot and Maidenhead. The OHLE contractor must have pushed very hard to fill in the gaps between Reading and Maidenhead.

And when I say wires up - I do mean everything, not just the wires hanging from the dangly bits.

So with infrastructure in place (energised ?) GWR can commit to 385's taking over from Turbos, which can start the Big Cascade! Right ?

Once the wires were all there through Reading, which was about a month ago, the straight bit to Maidenhead ought to be relatively quick. However, it's very hard to see if all the fiddly bits are in place - you'd need to know what's in the drawings. That's especially true at the east end of Reading station, where there is a lot of stuff. I guess there's a section break, plus all the isolation breaks for the points, but even then there's more stuff than is easy to explain.

To expand on that point about points: everywhere the line splits (e.g. between two platforms), or there's a crossover, there is a manual switch. That allows you to isolate any running line with a fault and use the others until such time as the line can be closed for a repair. Each isolation needs two or three extra short runs of wires (catenary and contact) and these need extra registration arms to keep then apart where they overlap. If you go onto platform 6 at Reading, past the ends of the through platforms, there's a forest of this switching stuff which certainly wasn't near complete last week.
Logged
lbraine
Sr. Member
****
Posts: 124


View Profile
« Reply #52 on: August 03, 2017, 12:25:24 pm »

I can't comment on the main line - as the HST roof was blocking my view !

The turnouts and goods waiting lines all looked wired - and I did note some very large looking metallic throw switches mounted at points along the way - which I presumed were circuit breakers for one reason or another.

Clearly can't comment on whether they were all in-situ as required.

I did notice that several of the temporary sites used a long the line for equipment and material storage also looks empty of heavy metal, cables drums etc.

Maybe the contractors just cleaned up before going on their summer hols !!
Logged
Adelante_CCT
Transport Scholar
Hero Member
******
Posts: 1301



View Profile
« Reply #53 on: August 03, 2017, 01:41:44 pm »

As discussed on another thread, switch on in the Reading area is 16/17th September, I assume a few weeks after that will see testing of 387s etc.
Logged
Electric train
Hero Member
*****
Posts: 3332


The future is 25000 Volts AC 750V DC has its place


View Profile
« Reply #54 on: August 03, 2017, 10:14:41 pm »

Observation from this AMs run into PAD.

The relief line wires are up and continuous between Didcot and Maidenhead. The OHLE contractor must have pushed very hard to fill in the gaps between Reading and Maidenhead.

And when I say wires up - I do mean everything, not just the wires hanging from the dangly bits.

So with infrastructure in place (energised ?) GWR can commit to 385's taking over from Turbos, which can start the Big Cascade! Right ?

There are electrification system tests planned, part of this is the section proving around Reading.  Also the SCADA has to be reprogramed and tested to bring in the Auto Transformers, the GWEP electrification past Maidenhead uses a IEC61850 based electrical protection scheme which has to be commissioned and fully tested, its not an overnight test, this does need the Auto Transformer system between Kensal Green and Didcot to be complete.

The planned public timetable use is Jan 18 although ECS moves, test and drive training runs may well start before this 
Logged

Neither a wise man nor a brave man lies down on the tracks of history to wait for the train of the future to run over him.     
Dwight D. Eisenhower
johnneyw
Transport Scholar
Hero Member
******
Posts: 1489


Still want to be a train driver when I grow up


View Profile
« Reply #55 on: August 15, 2017, 08:11:09 pm »

I saw one of the new Hitachis pulling into Severn Tunnel Junction late this morning. First time I've seen one up close. Even in it's unliveried uniform grey it looked impressive. Almost felt I was on the continent.
« Last Edit: August 15, 2017, 10:02:09 pm by johnneyw » Logged
eightf48544
Transport Scholar
Hero Member
******
Posts: 4429


View Profile Email
« Reply #56 on: August 16, 2017, 08:09:11 am »

Looks may  be deceptive.
Logged
SandTEngineer
Hero Member
*****
Posts: 3485


View Profile
« Reply #57 on: August 22, 2017, 02:41:29 pm »

Bristol - Cardiff Electrification contract re-award: http://www.railwaygazette.com/news/single-view/view/balfour-beatty-wins-bristol-cardiff-electrification-contract.html
Logged
FremlinsMan
Full Member
***
Posts: 59


View Profile
« Reply #58 on: September 03, 2017, 05:50:11 pm »

This IET event sounds highly relevant - https://communities.theiet.org/communities/events/item/259/266/18217

Details at http://www.theiet.org/events/local/250178.cfm

Open to all (not just IET members) and free to attend, but need to register by September 21st.
 
===

Great Western Railway Electrification

Added by IET Event
0 Comments |
DESCRIPTION
Great Western Railway Electrification, a presentation by Darrel Tiddy.

More info
DATE & TIME
Thursday 28 September 2017 2:00 pm BST
END DATE & TIME
Thursday 28 September 2017 4:00 pm BST
ADDRESS
Swindon Training Centre
Whitehall Road South
Swindon, SN21FB
United Kingdom


About this event
Darrel Tiddy, Senior Asset Engineer will deliver presentation on the Great Western Electrification Project and the Overhead Line Equipment (OLE) being installed.  A close up view of the OLE being installed will be possible through an outdoor tour around the Electrification Training Centre.

Programme
13:45 - Event open
14:00 - Lecture starts
16:00 - Event close
Registration information
Registration is required to attend and closes at the end of 21st September 2017.

===
Logged
TonyK
Global Moderator
Hero Member
*****
Posts: 5142


The artist formerly known as Four Track, Now!


View Profile
« Reply #59 on: September 04, 2017, 12:38:30 am »

Looks may  be deceptive.
Or not.

Time will tell.
Logged

Now, please!
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 3 [4] 5 6 ... 70
  Print  
 
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 a customer of Great Western Railway (formerly First Great Western), and the views expressed are those of the individual posters concerned. Visit www.gwr.com 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). Forum hosted by Well House Consultants

Jump to top of pageJump to Forum Home Page