LUL - T0509
Signalling equipment overhaul specification 2 position gravity biased relay (style BG)
active, Most Current
| Organization: | LUL |
| Publication Date: | 1 February 2023 |
| Status: | active |
| Page Count: | 44 |
scope:
This specification should be used by all those when engaged in the overhaul of 2 position gravity biased relays that are used in the signalling system on the LU.
Note: This specification is written to comply with LU standard S1202 'Signalling equipment overhaul'.
Purpose
This specification details the overhaul requirements of the gravity biased 2 position (style BG) relays, hereafter referred to as a 'BG relay', which are used in the signalling system on the London Underground (LU).
Document History
T0509
February 1, 2023
Signalling equipment overhaul specification 2 position gravity biased relay (style BG)
This specification should be used by all those when engaged in the overhaul of 2 position gravity biased relays that are used in the signalling system on the LU.
Note: This specification is written...
December 1, 2017
Signalling equipment overhaul specification 2 position gravity biased relay (style BG)
This specification is written to comply with LU standard S1202 ‘Signal Equipment Overhaul’ in defining the requirements for the overhaul of all variants of 2 position gravity biased relays which are...
October 1, 2011
Signalling equipment overhaul specification 2 position gravity biased relay (style BG)
This Specification is written to comply with Engineering Standard 1-202 in defining the requirements for the overhaul of all variants of 2 Position Gravity Biased Relays which are used extensively in...