CLEARANCE STUDY FOR DFC FOR TRACTION OVERHEAD

INSTALLATIONS.

PRESENTATION BY RE DIRECTORATE

POLICY GUIDELINES ISSUED FOR DOUBLE

STACK CONTAINERS

SALIENT PARAMETERS INVOLVED

1. MINIMUM HEIGHT OF HEAVY /LIGHT OVERLINE STRUCTURE

2. MINIMUM HEIGHT OF CONTACT WIRE

3. POWER LINE CROSSINGS

RAIL LEVEL = 0 mm

Max. Mov. Dim. = 6809 mm

Height of CONT = 7079 mm

Min. Fixed Dim. = 7760/8140 mm 250/630mm

270 mm

DOUBLE STACK CONTAINER MOVEMENT ON FREIGHT CORRIDOR

UNDER WIRE(Vertical Profile Scheduling)

{ Height of CAT = 7507 mm

COMPARATIVE STRUCTURES

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 - 6809+250+20 = 7079 mm

HEIGHT OF CATENARY - 7079+11+417 = 7507 mm

MIN.HEIGHT OF HEAVY OVERLINE STRUCTURE –

7507+250=7757 SAY 7760 mm

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 = 7760+380 = 8140mm

MINIMUM HEIGHT OF CONTACT WIRE

• BASIS:– MINIMUM HEIGHT OF DOUBLE STACK CONTAINOR

LOADED

ON FLAT WAGON - 6809 mm

LONG TIME CLEARANCE - 250 mm

ALLOWANCE FOR TRACK RAISING - 20 mm

7079 mm

POWER LINE CROSSINGS• LETTER NO. 2006/RE/161/1 PT. III DATED 19.05.06 – 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 13.1 m 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 18.66m 23.61 m

THANK YOU

DOES IT EXIST ANYWHERE ELSE ?

• CHINA – Shanghai – Kunminng Corridor

– Hangzhou – Zhuzhou section– (Liujhan-Jhegan sub-section) ( 2nd National

Project)