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IL made a modest start in the Railway Signalling field in the year 1985 by successfully executing a turnkey job for two wayside stations in Kota Division of Western Railway. The job involved design, engineering, manufacturing, and supply of material for the provision of Panel interlocking system at these stations. PI system provides for the failsafe operation of Signals and point machines for the movement of trains. The “Domino type” control-cum-indication panel, Relay racks, Cable termination racks, Power supply panels etc required for the system were manufactured for the first time.
Enthused by this initial success, IL ventured into the Railway Signalling field in
a major way. Now Railway Signaling Systems is one of the major areas of operation
for IL. IL
has
achieved a high degree of excellence in designing, manufacturing, supplying,
installation, testing and commissioning of Railway Signaling Systems comprising
of Panel Interlocking, Route Relay Interlocking, Multi Aspect Colour light
Signaling etc. The complex circuit designs for the systems are carried out on
computer aided systems. The signaling systems are manufactured in technical
collaboration with M/S Kyoson Electric Manufacturing Co. Japan.
Many such jobs have already been executed for Western Railway, Central
Railway, Southern, Central Railway, Railway Electrification, RITES, IRCON, NTPC
etc. The turnkey jobs involve
design, engineering, manufacturing, supply, and installation, testing and
commissioning works. The engineers
are well trained and experienced to carry out the design of Railway Signalling
systems using proven as well as non-proven type of relays. The types of relays
manufactured are Ordinary DC neutral line relays.
Track relays, both AC immune and Non-AC Immune.
These relays are supplied duly inspected by Railway Design and Standards
Organization of Indian Railways (RDSO). The unit is ISO-9001-2008 certified. Apart
from the conventional relay based systems, IL also offers K-5 type Solid State
Interlocking (SSI) system to Indian Railways in collaboration with M/s Kyosan
Electric Manufacturing Co Ltd., Japan. M/s
Kyosan have supplied and executed more than 400 system in Japan and overseas
countries and enjoys about 70% of Japanese market.
The SSI systems supplied are working satisfactorily in the high-density
routes and have excellent track record of safety. The
SSI system of M/s Kyosan, Japan (Model K5B) employs 2 out of 2 computer having
same hardware and same software for the Main interlocking Logic Unit, Electronic
terminals for relay interface, Signal Control, Switch Control etc.
The panel interface electronic terminal units and system monitoring units
are configured in single computer configuration. In the normal system called
Duplex system, all these units i.e. Main interlocking logic unit and Electronic
terminal units are further duplicated to be used as hot standby.
However, there is a flexibility to configure the system in Single
configuration or we may employ the main interlocking logic unit in hot standby.
Salient features of SSI
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Railway Signalling System |
