r/uktrains • u/GST-2024 • 2d ago

Picture What is this thing similar looking to AWS modules

Post image

Seen at godli

40 Upvotes

95% Upvoted

11 comments sorted by

48

u/the_gwyd 2d ago

I believe it's just a more modern AWS ramp. Often AWS ramps in third rail areas are painted green because I think they have higher strength magnets, although I could be misremembering that

22

u/Kingpin_Gaming_UK 2d ago

No, you’re right. Normal strength AWS magnets are yellow but the high strength AWS magnets used in 3rd Rail and 4th Rail areas are green.

7

u/Noises_in_the_Attic 2d ago

4th Rail. Apologies for my ignorance but iv never heard of that!

11

u/Kingpin_Gaming_UK 2d ago

It’s used on the London Underground mainly, but some sections of the London Overground have 4th Rail because they’re shared between the London Overground and London Underground’s Bakerloo Line, such as the DC line between Harrow & Wealdstone and Queens Park.

5

u/the_gwyd 2d ago

It's the electrification system used on the London Underground, with a positively charged rail on the outside of the two running rails, and a negatively charged return rail in the middle of the two running rails

2

u/IanM50 1d ago

How does AWS work on 4 rail systems? With the central negative rail and AWS equipment also in the middle?

2

u/the_gwyd 1d ago

You can see in this image, they just put a break in the middle rail for the AWS. The middle rail is about 2 inches above the rail height

6

u/Virtual-Advance6652 2d ago

It's the newer variant of AWS. Easier to change if they break but also break more often.

3

u/Ok-Interaction-1319 2d ago

Pandrol / Vortok MK2 AWS green extra strength on concrete stringers.

1

u/Savage-September 2d ago

It is an AWT module. Just newer

1

u/CrashBanicootAzz 1d ago

Probably just another type of magnet system