NR NB 134
Transpositions on DC Track Circuits
inactive
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| Organization: | NR |
| Publication Date: | 11 July 2018 |
| Status: | inactive |
| Page Count: | 3 |
scope:
Applies to all single rail DC track circuits on non electrified lines [on electrified lines it is likely that the need for continuous traction return would not cause the circumstances of this Notice Board to have occurred].
Purpose
To remind staff that the use of transpositions in single rail DC track circuits can import risk into the signalling system.
Document History
May 24, 2021
Transpositions on DC Track Circuits
Applies to all single rail DC track circuits on non electrified lines [on electrified lines it is likely that the need for continuous traction return would not cause the circumstances of this Notice...
March 30, 2020
Transpositions on DC Track Circuits
Applies to all single rail DC track circuits on non electrified lines [on electrified lines it is likely that the need for continuous traction return would not cause the circumstances of this Notice...
NR NB 134
July 11, 2018
Transpositions on DC Track Circuits
Applies to all single rail DC track circuits on non electrified lines [on electrified lines it is likely that the need for continuous traction return would not cause the circumstances of this Notice...
July 28, 2017
Transpositions on DC Track Circuits
Applies to all single rail DC track circuits on non electrified lines [on electrified lines it is likely that the need for continuous traction return would not cause the circumstances of this Notice...
June 6, 2014
Transpositions on DC Track Circuits
Applies to all single rail DC track circuits on non electrified lines [on electrified lines it is likely that the need for continuous traction return would not cause the circumstances of this Notice...