Electrical Networks Principles and Performance

1 PRINTOUT MAY NOT BE UP-TO-DATE; REFER TO METRO INTRANET FOR THE LATEST VERSION Engineering Standard Electrical Networks MEST 000002-06 Electrical Networks Principles and Performance Version: 1 Issued: January 2015 Owner: Chief Engineer Approved By: Paul O Halloran Chief Engineer Electrical Networks STANDARD Electrical Networks Principles AND Performance MEST 000002-06 Version: 1 Effective from: 16th January 2015 L1-CHE-STD-015 Approving Manager: Chief Engineer Approval Date: 16/01/2015 Next Review Date: 16/01/2018 PRINTOUT MAY NOT BE UP-TO-DATE; REFER TO METRO INTRANET FOR THE LATEST VERSION Page 1 of 16 Approval Amendment Record Approval Date Version Description 16/01/2015 1 Initial issue under MTM Electrical Networks STANDARD Electrical Networks Principles AND Performance MEST 000002-06 Version: 1 Effective from: 16th January 2015 L1-CHE-STD-015 Approving Manager: Chief Engineer Approval Date: 16/01/2015 Next Review Date: 16/01/2018 PRINTOUT MAY NOT BE UP-TO-DATE; REFER TO METRO INTRANET FOR THE LATEST VERSION Page 2 of 16 Table of Contents 1 Purpose.

2 3 2 Scope .. 3 3 Abbreviation .. 3 4 Definitions .. 3 5 References & Legislations .. 5 General .. 5 MTM Standards/Documents .. 5 Australian Standards/Documents .. 6 International Standards/Documents .. 6 6 Related Documents .. 6 7 Safety and Environmental .. 6 8 Functionality .. 7 9 network 7 10 High Voltage Distribution System .. 8 11 Essential Services Distribution System .. 8 12 Signalling Power Supply to Existing Lines .. 9 13 Industrial Power Supply System .. 9 14 1500V DC System .. 10 15 Rail to Earth Voltages .. 11 16 Future Proofing Requirements .. 11 17 Apparatus Supplied by the High Voltage Distribution System .. 12 18 Apparatus Supplied by the Essential Services Distribution System .. 12 19 Apparatus Supplied by Industrial Power Supply System .. 13 20 Apparatus Supplied by 1500V DC System .. 13 21 Electrical network Control and Indication.

3 14 22 Electrolysis Mitigation .. 15 Electrical Networks STANDARD Electrical Networks Principles AND Performance MEST 000002-06 Version: 1 Effective from: 16th January 2015 L1-CHE-STD-015 Approving Manager: Chief Engineer Approval Date: 16/01/2015 Next Review Date: 16/01/2018 PRINTOUT MAY NOT BE UP-TO-DATE; REFER TO METRO INTRANET FOR THE LATEST VERSION Page 3 of 16 1 Purpose To define the Standards for the Performance of the Electrical Networks for the Melbourne metropolitan railway. 2 Scope This Standard sets the Principles and Performance of all new Electrical Networks projects for the metropolitan railway. This Standard also applies to the major upgrading of the existing Electrical Networks . This Standard is the Parent Standard for all Electrical systems for the Melbourne metropolitan railway.

4 The Electrical Networks comprise the high voltage alternating current supply from the supply companies, the distribution of that supply to railway substations and other assets, the Essential Services Distribution System, the signalling system supply, the industrial power supplies, the direct current traction supply system and the railway component of the electrolysis mitigation system. This document does not apply to low voltage lighting and power installations supplying general apparatus at stations. The Standards for low voltage installations are given in MCST 000002-01 Lighting and Power Design and Construction. This Standard applies to works on the Infrastructure Lease and to works undertaken on other land which are intended to expand or enhance the provision of passenger services and to form part of the Infrastructure Lease.

5 3 Abbreviation ACCB Alternating current circuit breaker CBI Computer based interlocking DCCB Direct current circuit breaker PTV Public Transport Victoria kV kilovolt UPS Uninterruptable Power Supply V Volt 4 Definitions The Infrastructure Lease has the meaning as in the Franchise Agreement. Normal means, in relation to the Electrical Networks , the supply voltages, currents and Electrical infrastructure are operating as designed with all levels of network redundancy available for use as required. Electrical Networks STANDARD Electrical Networks Principles AND Performance MEST 000002-06 Version: 1 Effective from: 16th January 2015 L1-CHE-STD-015 Approving Manager: Chief Engineer Approval Date: 16/01/2015 Next Review Date: 16/01/2018 PRINTOUT MAY NOT BE UP-TO-DATE; REFER TO METRO INTRANET FOR THE LATEST VERSION Page 4 of 16 First order failure means the failure of one item of Electrical apparatus such as a circuit breaker, rectifier unit, transformer or cable.

6 Electricity remains available to provide the energy for the intended function. Examples are: Failure of a DCCB Failure of a rectifier unit Failure of one 22kV supply Failure of a transformer supplying the Essential Services Distribution System or signalling power supply system Note1. While supply remains available the nature of a particular failure may require limitations on train services delivery but not the suspension of services. Note 2. Failure of the overhead wiring system does not fit within this definition as services are disrupted. Second order failure means the failure of two items of Electrical apparatus such that the supply of electricity is severely compromised or unavailable to provide the energy for the intended function. Examples are: Failure of two DCCB s supplying the one overhead section Failure of a DCCB bus Failure of two rectifier units in one or two adjacent substations Failure of two 22kV supplies to one or two adjacent substations Failure of two transformers supplying the one region of the Essential Services Distribution System or Signalling Power Supply System High Voltage Distribution System means the 22kV or 11kV system comprising incoming supplies from the supply companies and the feeders at these voltages within the Infrastructure Lease.

7 Essential Services Distribution System means the system sourced at substations and distributed within the Infrastructure Lease for the supply of the signalling system, communications systems and other Electrical systems essential for the safe and reliable operation of the railway detailed in section 17 of this Standard. Note. The network traditionally known as the Signal Power Supply System is a component of the Essential Services Distribution System. Industrial Power Supply System means those portions of the 22kV or 11kV system supplying industrial facilities such as train maintenance depots, wash plants and workshops. 1500V DC System means the direct current traction system supply for the trains. Designated Essential Devices means the devices, apparatus and systems to be supplied by the Essential Services Distribution System as listed in clause Electrical Networks STANDARD Electrical Networks Principles AND Performance MEST 000002-06 Version: 1 Effective from: 16th January 2015 L1-CHE-STD-015 Approving Manager: Chief Engineer Approval Date: 16/01/2015 Next Review Date: 16/01/2018 PRINTOUT MAY NOT BE UP-TO-DATE; REFER TO METRO INTRANET FOR THE LATEST VERSION Page 5 of 16 Electrolysis Mitigation System means the devices, apparatus and systems provided for the protection of underground assets from the effects of stray current corrosion.

8 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. Standard A set of high level requirements that are mandatory to be adhered to achieve MTM s objectives. 5 References & Legislations General The Electrical Networks shall be designed and constructed in accordance with this Standard and relevant MTM Standards and Australian, Rail Industry and International Standards. The design and construction of the Electrical Networks shall comply with all legislative requirements and codes.

9 Where a conflict arises between Standards or clarification as to the applicability of a Standard or a part of a Standard is required, the matter shall be referred to the MTM Chief Engineer for determination. MTM Standards/Documents Document Number Title MEST 000002-01 Traction Substations and Tie Stations MEST 000002-02 Overhead Line Electrification MEST 070000-01 Train Maintenance Buildings Electrical Systems Earthing and Bonding MEST 000002-03 Railway Bridges Electrical protection and Bonding MCST 020100-01 Metropolitan Railway Stations MCST 000002-01 Lighting and Power Design and Construction MEST 000002-05 Track Bonding For Signalling and Traction Return Current L0-SQE-PLA-005 Environmental Management Plan (Franchise Agreement Requirement) L1-CHE-PRO-004 Type Approval Procedure Electrical Networks STANDARD Electrical Networks Principles AND Performance MEST 000002-06 Version: 1 Effective from: 16th January 2015 L1-CHE-STD-015 Approving Manager: Chief Engineer Approval Date: 16/01/2015 Next Review Date.

10 16/01/2018 PRINTOUT MAY NOT BE UP-TO-DATE; REFER TO METRO INTRANET FOR THE LATEST VERSION Page 6 of 16 L1-AMS-PRO-003 RAMS Procedure L1-AMS-MAN-005 RAMS Manual Australian Standards/Documents Document Number Title AS/NZS 3000 Wiring Rules 2007 Electrical Installations N/A Electrical Safety (Installations) Regulations 2009 N/A N/A Electricity Safety (Cathodic Protection) Regulations 2009 International Standards/Documents Document Number Title EN50122-1:2011+A1:2011 Railway applications. Fixed installations. Electrical safety, earthing and the return circuit. Protective provisions against electric shock EN50122 -2: 2010 Railway applications. Fixed installations. Electrical safety, earthing and the return circuit. Provisions against the effects of stray currents caused by traction systems 6 Related Documents The PTV has prepared the Melbourne Metropolitan Rail Plan and Metro Trains the network Development Plan.