1. CLEARANCE STUDY FOR DFC FOR TRACTION OVERHEAD INSTALLATIONS.
PRESENTATION BY RE DIRECTORATE

2. POLICY GUIDELINES ISSUED FOR DOUBLE STACK CONTAINERS
SALIENT PARAMETERS INVOLVED
MINIMUM HEIGHT OF HEAVY /LIGHT OVERLINE STRUCTURE
MINIMUM HEIGHT OF CONTACT WIRE
POWER LINE CROSSINGS

3. { DOUBLE STACK CONTAINER MOVEMENT ON FREIGHT CORRIDOR UNDER WIRE
(Vertical Profile Scheduling)
Min. Fixed Dim. = 7760/8140 mm
250/630mm
Height of CAT = 7507 mm {
Height of CONT = 7079 mm
270 mm
Max. Mov. Dim. = 6809 mm
RAIL LEVEL = mm

4. COMPARATIVE STRUCTURES

5. MINIMUM HEIGHT OF OVERLINE STRUCTURE
LETTER NO. 2006/RE/161/3 DATED 19/5/06
HEAVY OVERHEAD STRUCTURE ie ROB – 7760mm
BASIS:
HEIGHT OF CONTACT WIRE = 7079 mm
HEIGHT OF CATENARY = 7507 mm
MIN.HEIGHT OF HEAVY OVERLINE STRUCTURE –
=7757 SAY 7760 mm

6. MINIMUM VERTICAL CLEARANCE OF LIGHT OVERHEAD STRUCTURE
REF. LETTER NO. 2006/RE/161/3 DATED 19/5/06( REF. ITEM NO. 10(iii)(a) OF REV SOD 2004)
MIN HEIGHT OF LIGHT OVERLINE STRUCTURE
eg FOB = 8140
BASIS:
HEIGHT OF LIGHT STRUCTURE = = 8140mm

7. MINIMUM HEIGHT OF CONTACT WIRE
BASIS:
MINIMUM HEIGHT OF DOUBLE STACK CONTAINOR LOADED
ON FLAT WAGON mm
LONG TIME CLEARANCE mm
ALLOWANCE FOR TRACK RAISING mm
7079 mm

8. POWER LINE CROSSINGS New Clearance
LETTER NO. 2006/RE/161/1 PT. III DATED – STIPULATES VERTICAL CLEARANCES FOR POWER LINE CROSSINGS OF RAILWAY TRACKS
Voltage
Existing Clearance
New Clearance
At Mid span
At Fixed Structures
33 KV
14.1 m
13.1 m
16.4 m
66 KV
14.1m
16.7 m
132 KV
14.6m
13.7m
17.3 m
220 KV
15.4m
153 m
18.2 m
400 KV
17.9m
16.2m
20.0 m
500 KV
19.3m
18.66m
20.9 m
800 KV
23.4m
23.61 m

11. THANK YOU

12. DOES IT EXIST ANYWHERE ELSE ?
CHINA
Shanghai – Kunminng Corridor
Hangzhou – Zhuzhou section
(Liujhan-Jhegan sub-section) ( 2nd National Project)