High Voltage Cable Routes - Metro Trains Melbourne

1 PRINTOUT MAY NOT BE UP-TO-DATE; REFER TO Metro INTRANET FOR THE LATEST VERSION engineering Specification Electrical L1-CHE-SPE-070 high Voltage Cable Routes Version: 2 Issued: October 2017 Owner: Chief Engineer Approved By: Andrew Russack Head of Electrical engineering engineering SPECIFICATION high Voltage Cable Routes L1-CHE-SPE-070 Version: 2 Effective from: 25th October 2017 Approving Manager: Head of engineering - Electrical Approval Date: 25/10/2017 Next Review Date: 25/10/2020 PRINTOUT MAY NOT BE UP-TO-DATE; REFER TO Metro INTRANET FOR THE LATEST VERSION Page 2 of 30 Approval Amendment Record Approval Date Version Description 11/05/2016 1 Initial issue 25/10/2017 2 Minor corrections and clarifications throughout. Requirement for fault loop lengths and installation revised. Usage of sand pits revised and clarified. engineering SPECIFICATION high Voltage Cable Routes L1-CHE-SPE-070 Version: 2 Effective from: 25th October 2017 Approving Manager: Head of engineering - Electrical Approval Date: 25/10/2017 Next Review Date: 25/10/2020 PRINTOUT MAY NOT BE UP-TO-DATE; REFER TO Metro INTRANET FOR THE LATEST VERSION Page 3 of 30 Table of Contents 1 Purpose.

2 6 2 Scope .. 6 3 Abbreviation .. 6 4 Definitions .. 6 5 References & Legislations .. 8 MTM Standards/Documents .. 8 Rail Industry Standards/Documents .. 8 Australian Standards/Documents .. 8 6 Related Documents .. 9 7 General .. 9 Compliance .. 9 Permitted Configurations .. 9 Cable route Alignment .. 10 Under Track Crossings .. 11 Cable Joints .. 11 Cable Fault Loops .. 11 Ground Entry Arrangements .. 13 8 Separation of Services .. 14 Underground Conduits .. 15 Structure Mounted Conduits .. 15 Ground Level Troughing .. 15 Metallic Trunking .. 16 9 Cable Pits and Chambers .. 16 Pit and Chamber Types .. 16 Pit and Chamber Locations .. 16 Formed Pit and Chamber Requirements .. 17 General .. 17 Pit or Chamber Size .. 17 Pit or Chamber Installation .. 18 Cable Entry .. 18 Cable Support .. 18 Protection .. 19 Pit Access .. 19 Sand Pit Requirements .. 19 Location Requirements.

3 19 Construction .. 20 Protection and Marking .. 20 engineering SPECIFICATION high Voltage Cable Routes L1-CHE-SPE-070 Version: 2 Effective from: 25th October 2017 Approving Manager: Head of engineering - Electrical Approval Date: 25/10/2017 Next Review Date: 25/10/2020 PRINTOUT MAY NOT BE UP-TO-DATE; REFER TO Metro INTRANET FOR THE LATEST VERSION Page 4 of 30 10 Conduit .. 21 Conduit Requirements .. 21 Conduit Installation .. 21 Underground Installation .. 22 Installation by Excavation .. 22 Bored Installation .. 23 Protection .. 24 Structure Mounted Installation .. 25 Acceptable Usage Cases .. 25 Installation Requirements .. 25 Protection and Labelling .. 25 Strength .. 25 Spares .. 26 11 Direct Buried 26 12 Ground Level Troughing and Trunking .. 26 Acceptable Usage Cases .. 26 Ground Level Troughing .. 26 Trunking .. 26 13 Marking, Labelling and Record Keeping .. 27 Recording of Cable Routes and Cable Plans.

4 27 Cable route Markers .. 27 Cable Labelling .. 28 Pit Marking .. 28 14 Construction .. 28 Qualification .. 28 General .. 28 Fill and Compaction .. 29 15 Installation in Tunnels .. 29 16 Inspection and Testing .. 29 Conduit Testing .. 29 engineering SPECIFICATION high Voltage Cable Routes L1-CHE-SPE-070 Version: 2 Effective from: 25th October 2017 Approving Manager: Head of engineering - Electrical Approval Date: 25/10/2017 Next Review Date: 25/10/2020 PRINTOUT MAY NOT BE UP-TO-DATE; REFER TO Metro INTRANET FOR THE LATEST VERSION Page 5 of 30 Table of Figures Figure 1: Typical Fault Loop Installations for Joints Sand Pit .. 12 Figure 2: Typical Fault Loop Installation for Joint Formed Pit .. 12 Figure 3: Typical Fault Loop Installation for Joint Formed Pit .. 12 Figure 4: Typical Fault Loop Installation Sand Pit for Ground Entry from a Structure .. 13 Figure 5: Typical mechanical protection on 1500V mast.

5 14 Figure 6: Separation Distance .. 15 Figure 7: Cable Joint Supported in Pit .. 19 Figure 8: Sand Pit Construction .. 20 Figure 9: Typical Pit Entry Conduit sloping away from pit .. 22 Figure 10: Buried Conduit Installation .. 23 Figure 11: Conduit Protection by Other Services .. 24 Figure 12: Mandrel for Conduit Testing .. 30 engineering SPECIFICATION high Voltage Cable Routes L1-CHE-SPE-070 Version: 2 Effective from: 25th October 2017 Approving Manager: Head of engineering - Electrical Approval Date: 25/10/2017 Next Review Date: 25/10/2020 PRINTOUT MAY NOT BE UP-TO-DATE; REFER TO Metro INTRANET FOR THE LATEST VERSION Page 6 of 30 1 Purpose This specification sets out requirements for conduits, pits, troughing, trunking and the configuration of Cable Routes for MTM high Voltage cables, including but not limited to traction cables, feeder cables, electrolysis cables and signal or essential services power distribution cables.

6 2 Scope This standard is to be complied with for all installations of MTM high Voltage cables. This standard does not cover aerial lines associated with the above systems, or installations within buildings, switchyards or equipment cases. This specification supersedes VRIOGS for the purposes of MTM high Voltage cables except as referred to within this document. Any clarification required shall be sought from the Head of engineering Electrical. 3 Abbreviation AC Alternating Current DC Direct Current HV high Voltage LV Low Voltage MTM Metro Trains Melbourne O/H Overhead PTV Public Transport Victoria S/S Substation 4 Definitions Chamber A formed pit of sufficient size to enable a person to stand and work within it. Clean sand Clean washed river sand free of rocks, clay lumps, tree roots, building rubble, metal, glass, sharp objects, organic solvents or other deleterious material that is likely to damage cables.

7 Constructor A person or group of people tasked with the control of the work site that contains the underground Cable . Formed pit A formed chamber or Cable pit installed beneath the ground for the purpose of containing Cable joints, fault loops or bends. engineering SPECIFICATION high Voltage Cable Routes L1-CHE-SPE-070 Version: 2 Effective from: 25th October 2017 Approving Manager: Head of engineering - Electrical Approval Date: 25/10/2017 Next Review Date: 25/10/2020 PRINTOUT MAY NOT BE UP-TO-DATE; REFER TO Metro INTRANET FOR THE LATEST VERSION Page 7 of 30 high Voltage For the purpose of this standard the term high Voltage includes equipment and other electrical apparatus associated with the following systems: 1500V DC Traction (including Traction Negative) Electrolysis , 11kV and 22kV feeders 650V, 1000V, 2200V, 3300V and 6600V signal or essential services power distribution It also includes any other equipment operating at nominal voltages of 650V or above.

8 Low Voltage Any Voltage less than or equal to 650V, excluding those systems specifically defined as high Voltage in this standard. Pit A formed pit or sand pit Sand pit An excavation for the purpose of containing Cable joints, fault loops, or bends, where the excavation is backfilled to the surface with sand supporting the cables and access reserved for future maintenance. Shall Is used as the descriptive word to express a requirement that is mandatory to achieve conformance to the standard. Should Is used as the descriptive word to express a requirement that is recommended in order to achieve compliance to the standard. Should can also be used if a requirement is a design goal but not a mandatory requirement. Specification A set of requirements that are mandatory to be adhered to achieve MTM s objectives. Structure Mounted Conduit Conduit mounted in accordance with the requirements of section Trunking Galvanised Steel Troughing, installed as described in section of VRIOGS Rev A Underground Services Cables, conduits, pipes or similar that are underground and used for utilities such as water, power, gas, drainage or communications.

9 engineering SPECIFICATION high Voltage Cable Routes L1-CHE-SPE-070 Version: 2 Effective from: 25th October 2017 Approving Manager: Head of engineering - Electrical Approval Date: 25/10/2017 Next Review Date: 25/10/2020 PRINTOUT MAY NOT BE UP-TO-DATE; REFER TO Metro INTRANET FOR THE LATEST VERSION Page 8 of 30 5 References & Legislations All references to standards or other documents shall be taken to be a reference to the latest version of that document inclusive of any amendments at the time of reading. MTM Standards/Documents Document Number Title IPG OR-01 Electrical Safety Rules L4-CHE-STD-009 Traction Substations and Tie Stations L4-CHE-STD-011 Overhead Line Electrification L1-SDD-STD-006 train Maintenance Buildings Electrical Systems Earthing And Bonding L1-CHE-STD-010 Railway Bridges Electrical Protection and Bonding L1-CHE-STD-016 Track Bonding For Signalling and Traction Return Current L1-CHE-GDL-029 Chief Engineer s Directive - Conduit Usage in Sunlight L1-INF-PRO-001 Protection of Underground Assets and Services Procedure Rail Industry Standards/Documents Document Number Title N/A PTV Infrastructure Drawing Standards VRIOGS Specification for Signalling Supply.

10 Construction and Installation VRIOGS Standard for Construction of Cable route and Signalling Civil Works Australian Standards/Documents Document Number Title AS 1319 Safety signs for the occupational environment AS 1477 PVC pipes and fittings for pressure applications AS 1657 Fixed platforms, walkways, stairways and ladders Design, construction and installation AS Industrial fall-arrest systems and devices - Selection, use and maintenance AS 2053 Conduits and fittings for electrical installations AS Underground marking tape - Non-detectable tape AS 2865 Safe working in a confined space AS 3000 Electrical installations (known as the Australian / New Zealand Wiring Rules) AS 3008 Electrical installations Selection of cables engineering SPECIFICATION high Voltage Cable Routes L1-CHE-SPE-070 Version: 2 Effective from: 25th October 2017 Approving Manager: Head of engineering - Electrical Approval Date: 25/10/2017 Next Review Date: 25/10/2020 PRINTOUT MAY NOT BE UP-TO-DATE.