All Line Rover
Established Member
- Joined
- 17 Feb 2011
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- 5,222
What did LM provide for Birmingham to Northampton passengers?
What about in places where units operate on both AC and DC supplies?DC track circuits in AC electrified areas, and vice versa.
I would imagine axle counters are the modern solution, with track circuit based systems having to switch depending on what kind of traction is in use?Class 66's said:What about in places where units operate on both AC and DC supplies?
Axel counters or *very* carefully worked out immunisation measures.What about in places where units operate on both AC and DC supplies?
DC track circuits in AC electrified areas, and vice versa.
And New Street is in chaos again today (Mon 11/4) with a major signalling power failure affecting the south end.
What about in places where units operate on both AC and DC supplies?
From that photograph alone, it is a difficult conclusion that it is deliberate interference. The damage is consistent with a fault on the larger (3ph power?) cable, with a resulting flashover damaging it's neighbours.
NR followed up their initial tweets by saying that there were obvious signs of slashing to the cables that were not clear on the photos.
What kind of a dimwhit slashes a 3phase (415v?) cable?
Dimwit? More like natural selection .
I suppose your typical dimwitted opportunistic thief won't be able to tell the difference between LV multicore signalling cable and thick high voltage/amperage 415V mains cable.
What kind of a dimwhit slashes a 3phase (415v?) cable?
Signalling power supplies are 650v single phase.
(Other supplies are used, but power schemes generally use 650)
The modern standard is fully insulated 400 volt 3 phase supplies as the ORR are having reservations about un earthed 650 IT signalling supplies.
Bring back dry cells!
The modern standard is fully insulated 400 volt 3 phase supplies as the ORR are having reservations about un earthed 650 IT signalling supplies.
Signalling power supplies are 650v single phase.
(Other supplies are used, but power schemes generally use 650)
The operator told me the last time someone tried it he tried to cut the (live 11kV) cable with a hacksaw. As you can imagine that didn't end well.:roll: (he did survive but spent a long time in hospital then a longer time as a guest of Her Majesty.
Man arrested over Caldercote signalling cable theft
A man has been arrested after signalling cable was stolen causing major rail disruption in and around Birmingham.
Fifty-nine trains were cancelled when eight metres of cabling was stolen on 29 March near Caldecote.
It caused delays of more than 19 hours at Birmingham New Street station, said British Transport Police.
A 29-year-old man from Nuneaton arrested on suspicion of theft has been released on bail.
Det Insp Gareth Davies from BTP said: "Our investigation into this theft is ongoing and we are still interested in hearing from anyone with any information about what happened."