CHAPTER VII

SIGNALLING & TELECOMMUNICATION AND PERMANENT WAY INSTALLATIONS IN ELECTRIFIED SECTIONS

 

Para No. Subject
20700 Introduction
. I. SIGNALS AND ASSOCIATED EQUIPMENT
20701 Effect of 25 kV Traction on S&T Equipment
20702 Types of Signals
20703 Locations of Signals
20704 Insulation of Wires and Point Rods
20705 Earthing of S&T Equipment
20706 Signalling & Telecommunication cables.
20707 Block Instruments and Block circuits.
20708 Track Circuits
20709 Bonding in Track Circuited Zones
20710 Signalling and Inter-locking Circuits
. II. TELECOMMUNICATION FACILITIES FOR AC TRACTION
20711 Telecommunication Circuits
20712 Principle of Tapping
20713 Power Supply Arrangement
. III. PERMANENT WAY INSTALLATIONS
20714 Major Track Maintenance Works
20715 New Sections to be Electrified