VRIOGS 010.7 RevA - Public Transport Victoria

36 VRIOGS 010.7 Revision ASECTION 9.0CABLES AND BUSBARS9.1 General1. Cables are used to connect impedance bonds and negative bus bars to railand between neutral points of impedance bonds. They are also used for tie-inbonds, cross bonds, bonding of mechanical rail joints, “out of service” IRJs,and the connection of electrolysis bonds to rail.2. Bus bars should be used between neutral points of adjacent impedancebonds when they are mounted externally to the track.3. Crimp lugs are used to terminate bonding cables for connecting to impedancebonds, neutral busbars and rails.4. The current rating of cables and busbars shall be matched to the definedtraction current rating of the installation area.5. Specified crimp lugs are designed to carry the full traction rating.6. The cables to be used in various applications are set out below. Trackinsulation and bonding plans may augment these minimum standards inparticular circumstances.9.2 Electrolysis BondingOne 95 mm 2 aluminium cable shall be provided and connected from the identifiedelectrolysis connection point to the traction current return conductor via theimpedance bond neutral point.9.3 Neutral Bus BarWhere the impedance bonds are mounted on stands next to the track, the connectionbetween adjacent impedance bond neutral points should be made using a tinnedcopper bus of 3500A continuous rating to AS3000 Table C or by the use of 4 number300 mm 2 aluminium bonding cables.9.4 CablesAll cables utilised shall be compliant to VRIOGS Signal Cable Specifications or to theInfrastructure Manager’s Specifications.See below Table 7 for cable types and applications.NOTE: This document is controlled only when viewed on the DOT Engineering Standards website.Any other copy of this document is uncontrolled, and the content may not be current.