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F. Cable requirement
Signaling Cable: In the stations, Home & Advance starter signals are directly fed from
the EI/Relay room with standard signaling cable, with aspect repeating relays at signal
locations. Automatic Signals at AG are directly fed using a 12 x 1.5 Sq.mm signaling
cable from AG, without any repeater relay at site, as the distance is not more than 200
meter.
Quad Cable: MSDAC evaluator to each DP requires 1 quad of 4 conductor. A separate 6 quad
cable is used for each DP of dual detection (main + Stand-by) from the nearest Half location
box provided for Signal cable termination at signal location. From AG to Half location box
one 6 quad each is used for UP & DN directions.
Disclaimer:
(1) The scheme given above, was adopted in 2018 for Automatic Signalling work in Vijayawada
– Gunadala – Mustabada section of Vijayawada division of SCRly, is only for Technical
information of signal Engineers and does not indicate endorsement of any particular make of
MSDAC or EI/OC.
(2) Scheme will have to be suitably modified as per Technical requirements/Facilities in
particular make of MSDAC & other equipments being used.
Refer to Drawings 20-D1 in Appendix II
Chapter 20: Automatic Block Signalling Page 432 of 535
