APPENDIX-X

25 kV OHE DIAGRAMS OF GENERAL ARRANGEMENT AND FITTINGS

(As issued by RDSO)

CONTENTS

1 Setting of structures in the vicinity of semaphore signals.
2 Setting of structures in the vicinity of colour light signals without route indicator. 
3 Setting of structure in the vicinity of colour light signals with route indicator.
4 Setting of structures on curved track (Speed 200 km/h).
5 Setting of structures on curved track (Speed 105 km/h).
6 General clearance diagram for tangent and flat curves (regulated OHE).
7 Dropper schedule for regulated OHE (equal encumbrance).
8  Span and stagger chart.
9 General clearance diagram for tangent and flat curves (unregulated OHE).
10 Schematic arrangement of regulated and unregulated OHE.
11 Type of OHE.
12 Arrangement of OHE on platforms.
13 General arrangement of OHE on tangent track.
14 Cantilever arrangement (Normal).
15 Arrangement of OHE on portal.
16 Typical cross section of two-track section with Anchor Block.
17 Cantilever arrangement (High Speed).
18 Typical arrangement of structure & bracket assembly to suit raising of track (regulated).
19 Typical arrangement of structure assembly to suit raising of track (unregulated).
20 Typical structure section drawing of two-track section .(Normal).
21 General arrangement of head span for OHE on 4 tracks.
22 Typical foundation of OHE mast and portal.
23 Traction mast and portal (sections).
24 Uninsulated overlap.
25 Standard anticreep arrangement.
26 Neutral section .
27 Insulated overlap.
28 Standard anchor arrangement.
29 Ceramic Beaded Neutral section at support (PTFE Type).
30 Termination of regulated OHE (Pulley block type).
31 Termination of regulated OHE (winch type).
32 Fixed termination of two-OHEs (regulated and unregulated).
33 Fixed termination of OHE (regulated and unregulated).
34 Termination of two un-regulated OHE.
35 Termination of single wire (catenary and contract).
36 Standard section insulator assembly.
37 Termination of OHE at buffer end sidings.
38 Type of jumpers.
39 Characteristics of conductor for 25 kV ac OHE.
40 Standard/large bracket assembly.
41 Catenary dropper assembly.
42 25 mm regulator arm assembly.
43 Tubular stay arm.
44 Steady arm assembly.
45  25 mm raised register arm assembly.
46 Structure bonds.
47 Insulators.
48 Warning boards.