General Information on Track Circuits - RGS Online
General Information on Track Circuits - RGS Online
General Information on Track Circuits - RGS Online
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Railway Group Approved Code of Practice<br />
GK/RC0752<br />
Issue Two<br />
Date December 1998<br />
Page E52 of 52<br />
19 Tracti<strong>on</strong> Negative<br />
Return Jumpers<br />
50 mm<br />
50 mm<br />
<str<strong>on</strong>g>General</str<strong>on</strong>g> <str<strong>on</strong>g>Informati<strong>on</strong></str<strong>on</strong>g> <strong>on</strong> <strong>Track</strong> <strong>Circuits</strong><br />
These are supplied by the Electric Tracti<strong>on</strong> Engineer and are c<strong>on</strong>nected to the<br />
aluminium busbar by Signal Engineering staff in accordance with GK/RC0754<br />
Part D. A marking jig (see Figure E55) should be utilised for marking out the<br />
busbar for drilling.<br />
16.5 mm<br />
Withdrawn Document<br />
Unc<strong>on</strong>trolled When Printed<br />
NOTES<br />
63.5mm<br />
191.0mm<br />
To Be Suitably<br />
Drilled and Riveted<br />
E 52 R A I L T R A C K<br />
63.5mm<br />
20mm<br />
5 0<br />
150 mm<br />
4 Holes at 17.5 mm Dia.<br />
150 mm<br />
1. Material is aluminium plate 150 x 6 (Off cut from impedance<br />
b<strong>on</strong>d busbar.)<br />
2. Remove all burrs and sharp edges.<br />
3. Jig must be located in the centre of the bed.<br />
4. This jig is for marking out <strong>on</strong>ly.<br />
Figure E55<br />
A label with the legend ”TRACTION VOLTAGE DO NOT REMOVE THIS LEAD”<br />
(see Figure E54) should be attached to negative return jumpers at substati<strong>on</strong>s,<br />
TP Huts and TIR sites. Such leads may be disc<strong>on</strong>nected <strong>on</strong>ly under an absolute<br />
tracti<strong>on</strong> isolati<strong>on</strong> and in accordance with GK/RC0754 Part G.