3.3kV Essential Services Distribution System MAY NOT BE UP- TO-DATE; REFER TO METRO INTRANET FOR THE...

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Engineering Specification Head of Engineering Electrical

L1-CHE-SPE-154

3.3kV Essential Services Distribution System

Version: 1

Issued: July 2016

Owner: Head Of Engineering Electrical

Approved By:

Phil Ellingworth

Chief Engineer

ELECTRICAL SPECIFICATION 3.3KV ESSENTIAL SERVICES DISTRIBUTION

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L1-CHE-SPE-154 Version: 1 Effective from: 13th July 2016

Approving Manager: Chief Engineer Approval Date: 13/07/2016 Next Review Date: 13/07/2019 PRINTOUT MAY NOT BE UP-TO-DATE; REFER TO METRO INTRANET FOR THE LATEST VERSION of 33

Approval

Amendment Record

Approval Date Version Description 13/07/2016 1 Initial issue


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Table of Contents 1 Purpose ........................................................................................................................... 5

2 Scope ............................................................................................................................... 5

3 Abbreviation .................................................................................................................... 5

4 Definitions ....................................................................................................................... 6

5 References & Legislations ............................................................................................. 6

5.1 General ............................................................................................................................. 6

5.2 MTM Standards/Documents ............................................................................................. 7

5.3 Rail Industry Standards/Documents ................................................................................. 7

5.4 Australian Standards/Documents ..................................................................................... 7 5.5 International Standards/Documents ................................................................................. 8

6 ESDS Asset Class Considerations ................................................................................ 8

7 System Requirements .................................................................................................... 9

7.1 Designated Essential Services Devices and Other Electrical Services ............................ 9

7.2 System Architecture .......................................................................................................... 9

7.3 Architecture – Low Voltage Supply to Non Designated Essential Services ................... 11

7.4 ESDS System Electrical Operations ............................................................................... 11

UPS Synchronisation .................................................................................... 11 7.4.1 3.3kV Reticulation Electrical Operation ........................................................ 12 7.4.2

7.5 Transition from Existing 2.2kV, 1.0kV and 650V Reticulation System ........................... 12 7.6 Earthing and Bonding ..................................................................................................... 13

Choice of ESDS Earthing System ................................................................ 13 7.6.1 Railway 1500VDC System ............................................................................ 14 7.6.2 Earthing Design ............................................................................................ 15 7.6.3 CER Earthing Requirements ........................................................................ 16 7.6.4 DTRS Earthing Requirements ...................................................................... 16 7.6.5 SER Earthing Requirements ......................................................................... 16 7.6.6 Vic Track Communication Equipment Requirements ................................... 16 7.6.7 Railway Station Earthing Requirements ....................................................... 17 7.6.8

7.7 Lightning Protection ........................................................................................................ 18

7.8 Insulation Co-ordination .................................................................................................. 18

7.9 Protection Co-ordination ................................................................................................. 19

8 Environmental and Climatic Conditions ..................................................................... 20

9 System Parameters....................................................................................................... 21

10 Specific ESDS Power Supply Requirements .............................................................. 21

10.1 ESDS Distribution Reticulation Design ........................................................................... 21 10.2 Signal Power Supply ....................................................................................................... 22


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10.3 SER Power Supply ......................................................................................................... 23

10.4 CER Power Supply ......................................................................................................... 23

10.5 Vic Track Power Supply .................................................................................................. 23 10.6 Railway Station Power .................................................................................................... 23

11 Equipment and Installation .......................................................................................... 25

11.1 General Specifications .................................................................................................... 25

11.2 Trackside 3.3kV Signal Equipment Location .................................................................. 25

12 Inspection and Testing ................................................................................................. 26

13 Documentation .............................................................................................................. 26

13.1 General ........................................................................................................................... 26

13.2 Design Process ............................................................................................................... 26

13.3 Operation and Maintenance Manual............................................................................... 26

13.4 Design Documentation ................................................................................................... 26

13.5 Technical Maintenance Plan ........................................................................................... 26

14 Appendices ................................................................................................................... 27

14.1 Appendix A - Essential Services Distribution System Single Line Diagram ................... 27

14.2 Appendix B - Substation Essential Services Single Line Diagram ................................. 28 14.3 Appendix C - Design Deliverables .................................................................................. 30

14.4 Appendix D - Designated ESDS Devices ....................................................................... 33


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1 Purpose This document details the requirements for the 3.3kV Essential Services Distribution System sourced at and distributed between railway substations within the Infrastructure Lease for the supply of the signalling system, communications systems and other electrical systems as defined in L1-CHE-STD-015.

2 Scope This Specification shall be applied to all new infrastructure and major upgrades of infrastructure which includes Essential Services.

This Specification describes the functional and design requirements for the Essential Services Distribution System.

A reliable power supply distribution system is fundamental to the operation of the signalling, communication and other systems within the railway and hence to the on-time running of train services. This document describes the technical requirements for an essential services power supply system to provide the required high level of safety and reliability.

For contract works, this document shall be read in conjunction with the particular specification, which refers to it.

As per L1-CHE-STD-015 where the complexity of the signalling apparatus and the particular project parameters prohibit the full introduction of the Essential Services Distribution System, a compromise as described is to be put in place. The detailed requirements shall be as stated in Form MEMF 000002-06 Electrical Networks Functional Requirements.

I. The change from the existing 2200V, 1000V or 650V systems to the new 3.3kV system may be made progressively over many years. As a transition plan, with the upgrading of the signalling power supply locations, all equipment installed shall conform to that for the future, being the 3.3kV three phase system with UPS backup.

II. Where necessary, the output of the 3.3kV three phase system shall be transformed to provide a single phase supply to the Signal Zone Boxes. The supply shall be in phase with the existing system. The detailed requirements shall be as stated in Form MEMF 000002-06 Electrical Networks Functional Requirements.

This specification supersedes the relevant clauses in VRIOGS 12.1 and 12.2. Where any conflict in the requirements exists, the Head of Engineering - Electrical or Head of Engineering - Signals as appropriate, shall make a direction on the issue.

3 Abbreviation ACCB Alternating Current Circuit Breaker CBI Computer Based Interlocking CCTV Closed Circuit Television System CER Communications Equipment Room DCCB Direct Current Circuit Breaker


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DTRS Digital Train Radio System PTV Public Transport Victoria FLS Field Lan Switch Enclosure ESDS Essential Services Distribution System ESAT Essential Services/Auxiliary Transformer kV Kilovolt SCADA Substation Control and Data Acquisition System SER Signal Equipment Room UPS Uninterruptable Power Supply V Volt

4 Definitions 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.

Designated Essential Services Devices

Designated Essential Devices means the devices, apparatus and systems to be supplied by the Essential Services Distribution System as listed in clause 18.2 of L1-CHE-STD-015 and also the items listed in Appendix D.

Non Designated Essential Services Devices

Devices means the devices, apparatus and systems to be supplied which are neither a designated Essential Services Device or a Safety Service

Safety Services As defined in Clause 1.4.82 and 7.2 of AS/NZ 3000.

5 References & Legislations

5.1 General Reference to all standards shall be read as a reference to the latest edition of that standard and amendments available at the time of tendering.

The ESDS shall meet all relevant Environmental Acts, Legislation and Regulations, Codes of Practice and Standards, and shall be designed to minimise the impact on the environment. Accordingly the ESDS shall minimise its environmental impact over its entire asset life cycle, including construction, ongoing operation and disposal. In particular, MTM has a focus on reduced electrical losses in its electrical systems.


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5.2 MTM Standards/Documents

Document Number Title MEST 000002-01 Traction Substations And Tie Stations

MCST 020100-01 Metropolitan Railway Stations

MEMF 000002-06 Electrical Networks Functional Requirements

MCST-000002-01 Lighting and Power Design and Construction

L4-CHE-INF-002 Standard Product List

L1-CHE-STD-010 Electrical Networks Standard Railway Bridges Electrical Protection And Bonding

L1-CHE-STD-016 Track Bonding For Signalling And Traction Return Current

Various Equipment Specifications Refer Section 11.1

L1-CHE-STD-015 Electrical Networks Principles And Performance

L1-CHE-STD-009 Traction Substations And Tie Stations

L1-SDD-STD-006

Train Maintenance Buildings Electrical Systems –Earthing And Bonding

Draft Communications Equipment Room Standard

5.3 Rail Industry Standards/Documents

Document Number Title

IPGOR -01 PTC Train Infrastructure Electrical Safety Rules (High Voltage Rules)

VRIOGS 012.1 Standard for Signalling Design and Documentation

VRIOGS 012.2 Specification for Signalling Supply, Construction and Installation

5.4 Australian Standards/Documents

Document Number

Title

AS/NZS 3000 Wiring Rules – 2007 Electrical Installations

N/A Electrical Safety (Installations) Regulations 2014

S.R. No. 164/2009 Electrical Safety Regulations 2009

S.R. No. 151/2009 Electricity Safety (Cathodic Protection) Regulations 2009

AS 60044.1 Current Transformers

AS 60044.2 Instrument Transformers


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AS 2067 Substations And High Voltage Installations Exceeding 1kv A.C.

AS 1824 Insulation Co-Ordination

AS 4436 Guide For The Selection Of Insulators In Respect Of Polluted Conditions

AS 2650 Common Specifications For High Voltage Switchgear And Control Gear Standards

AS 62271 High-Voltage Switchgear And Control Gear AS/CA S009 Installation Requirements For Customer Cabling (Wiring

Rules)

AS/NZS 3015 Electrical Installations-Extra-Low Voltage D.C. Power Supplies And Service Earthing Within Public Telecommunications Networks

5.5 International Standards/Documents

Document Number Title

EN50122-1:2011+A1 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 D.C. Traction Systems

IEC 60364-Complete Series

Low-Voltage Electrical Installations

6 ESDS Asset Class Considerations The design of the ESDS shall consider minimising the whole-of-life cost. The designer and/or manufacturer shall provide the following information:

• Cost of changes to the Technical Maintenance Plan & Service Schedules or the creation of new manuals & schedules;

• Cost of decommissioning and disposal;

• Cost of installation;

• Cost of inventory spares;

• Cost of maintenance;

• Cost of manuals;

• Cost of modifications to other parts of the installation;

• Cost of replacement parts;


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• Cost of special tools;

• Cost of staff training;

• Discount rate;

• Electrical losses;

• Environmental costs;

• Initial purchase price;

• Lifetime of equipment; and

• Reliability and cost of consequential damage after failure.

7 System Requirements

7.1 Designated Essential Services Devices and Other Electrical Services Apparatus to be supplied from the ESDS are listed in Appendix D.

The designated essential service devices are so specified to overcome the previous problems where there were up to three different supplies for such equipment, in particular at SERs. The objective of the single ESDS is to provide a highly reliable electrical supply to the subject systems.

The system design shall ensure that the reliability targets set by PTV are met.

L1-CHE-STD-015 Electrical Networks Principles and Performance specifies that all other loads at Stations including safety services shall be supplied from an external power company supply. The earthing and bonding strategy at the ESDS to the external power company interface shall be provided to the Head of Engineering - Electrical for approval (refer Section 7.6).

7.2 System Architecture The ESDS shall consist of a three phase 3.3kV reticulation system fed from at least two substations, the general configuration of which is shown in Appendix A.

All 3.3kV ACCB switchboards shall be contained in power equipment rooms when part of a substation, station, SER or other building. When the ACCB switchboard is required to be contained in its own enclosure, such as at trackside location boxes, then it shall be housed within a stainless steel enclosure, as detailed in L1-CHE-SPE-150.

The ESDS comprises of:

• Substation Architecture

The system shall be supplied from an ESAT which typically would be a 100kVA, 3Φ, 22kV/400V Dyn11 transformer. The ESAT will then feed a 400V three phase supply which is connected to a UPS from the 400V switchboard. The UPS shall be a dual conversion type (3Φ 400V input/3Φ 400V output) with static and manual bypass switches, as shown in Appendix B.


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The UPS shall feed a 3Φ 400V/3.3kV Dyn1 transformer, yielding a 3.3kV supply in phase with the 22kV distribution system.

The 3.3kV supply shall be connected to an ACCB switchboard with an incoming ACCB and the appropriate number of feeder ACCBs, which is normally two.

The ESDS distribution section between two Substations will generally be normally fed from the up side Substation.

• Trackside Reticulation

The three phase 3.3kV supply shall be reticulated via an underground three core cable, from the Substation, to trackside ring main switchboards, located at the ESDS power distribution locations. The reticulation shall be installed as detailed in L1-CHE-SPE-070.

The trackside ring main unit enclosure shall also house a step down transformer, LV circuit protection and cable fault locator units. Each line side supply point shall be regarded as a separate location with remote control and indication of the apparatus at that location.

• Signal Zone Box

Signal Zone Boxes shall be distributed via a ring main unit, containing a 3.3kV/110V transformer and 110V Switchboard.

• SER

SERs shall be supplied from the ESDS via a ring main switching unit. From the ring main switching unit, a 3.3kV/400-230V transformer shall supply a 400/230V essential services bus, which will in turn supply the main 110V field signal equipment switchboard from a 400-230V/110V transformer.

Any CER or Vic Track equipment; CBI UPS and general Light and Power shall be fed from the 400/230V essential services bus.

• DTRS Facility

The DTRS facility shall be supplied via a ring main ACCB unit housed in an enclosure separate to the equipment hut, which shall also house a 3.3kV/400-230V transformer and switchboard.

CER / Vic Track Communication Room

Vic Track Communications Rooms and CERs shall be supplied from the ESDS. Where a separate Vic Track Communications Room or CER exists then a ring main switching unit shall supply a 3.3kV/400-230V transformer which shall supply the Vic Track / CER UPS and the associated light and power required for the room. The 3.3kV/400-230V transformer shall be housed separately to the CER and/or Vic Track Communications Room.

If a CER or Vic Track Communications Room is located together with another CER or Vic Track Communications Room, or a station or SER, they shall be supplied from the same 400/230V Essential Services bus.


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• Railway Stations

The station designated essential services shall be supplied via a 3.3kV ring main unit housed in a dedicated power equipment room or enclosure. This shall include a 3.3kV/400V transformer supplying a 400V Essential Services switchboard.

There shall be strict separation of the power company and the essential services earthing systems.

7.3 Architecture – Low Voltage Supply to Non Designated Essential Services The non-designated ESDS loads at railway stations shall be supplied from a low voltage 400V/230V power company supply via an isolating transformer. If the load is substantial then a standalone kiosk substation could be used where the main HV/LV transformer may act as an isolating transformer

The 400V/230V supply to non-designated essential services including safety services, which will predominately be at Railway Stations, shall be supplied from the external power company supply.

The earthing and bonding scheme shall ensure effective isolation between the power company supply and 400V/230V supply to the non-designated essential services loads.

7.4 ESDS System Electrical Operations

UPS Synchronisation 7.4.1The Electrical Network Control Centre “Electrol” will remotely control the ESDS Distribution System.

The electrical operation of the ESDS shall be based on the following principles:

• Switching of the ESDS shall involve closing the alternate supply circuit breaker, and subsequently opening the previous supply circuit breaker, with a short period of parallel operation to prevent a loss of supply.

• Paralleling of UPS supplies shall only occur when the UPS output is synchronised and in phase with the portion of the ESDS with which it is to be paralleled.

• A synchronising signal shall be able to be provided to the UPS. The synchronising signal shall be provided via a “Load Bus Synchronisation Unit”.

• A synchronisation signal from the line side of at least two ESDS feeders at the substation shall be input into the “Load Bus Synchronisation Unit” from which the signal can be selected, based on the switching arrangement in place. Alternatively a remote synchronisation signal may be provided electronically using optic fibre communications.

• All operating scenarios and switching arrangements including normal, one UPS out of service, a UPS feeding outwards in all directions and end of line sections shall be considered, and synchronisation provided to enable sufficient reliability and redundancy in each scenario.


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3.3kV Reticulation Electrical Operation 7.4.2The Essential Services Distribution, including the trackside signal box location boxes shall be capable of being sectionalised by remote control into individual feeders, zones and supplies to separate devices to ensure continuity of supply and facilitate maintenance of the electrical assets.

The sectionalising shall be such as to permit switching of the system to energise or de-energise apparatus as required but to also ensure that the signalling power supply system and other supplies remain supplied as required

A cable fault indicating device shall be fitted to each load side point of a Substation or 3.3kV ring main switching unit. This is to enable Electrol to effectively locate a cable fault and undertake switching around the cable fault.

7.5 Transition from Existing 2.2kV, 1.0kV and 650V Reticulation System All new substations or at substations where major upgrades are occurring, an ESDS UPS shall be placed into service.

If a UPS is to be installed in an area with a 2.2kV single phase signal distribution system, a three phase input shall be provided to the UPS, and a three phase 400V/2.2kV step up transformer connected to the output, with only two phases of the step up transformer to be connected to the 2.2kV distribution network, as shown in Appendix B.

If a UPS is to be installed in an area with a three phase 1.0 kV single phase signal distribution system, the output of the UPS shall be connected to a three phase 400V/1.0kV step up transformer with 0° phase shift to ensure the appropriate phase relationship.

If upgrade works are occurring in areas which have 650V or individual 230V street supplies, then the complete section or parts thereof shall be converted to 3.3kV reticulation.

The following transitional requirements shall be made where new or major works are occurring between two or more existing trackside switching locations, which are at 2.2kV or 1kV:

• The interconnecting cables shall have three cores and be adequately rated for 3.3kV reticulation, in terms of voltage, current carrying capacity, general specifications and earthing configuration.

• The installation shall meet the requirements of L1-CHE-SPE-070.

• Trackside switchgear which meets the requirements of L1-CHE-SPE-150 shall be installed.

• All three phases of the reticulation cable shall be terminated onto the trackside equipment, with the unused phase having a suitable insulating cap placed over its termination.


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7.6 Earthing and Bonding

Choice of ESDS Earthing System 7.6.1The Designer shall specify the earthing system, as allowed in Section 5.1.4 of AS/NZS 3000, stating clearly how Part 1 of AS/NZS 3000 is satisfied taking into account any effects on the distribution network supplying the system.

For the power distribution system to meet the requirements of Section 5.3 of AS/NZS 3000, the system shall meet IEC 60364. As such the type of earthing system shall meet the requirements of Section 312.2 of IEC 60364 and be specified in accordance with the codes T, I, N, C and S.

All signalling supplies shall be connected between phases and shall have no connection to earth to maintain circuit integrity and safety in the event of any individual earth fault.

The method of neutral grounding of the ESDS system shall be specified from one of the following schemes

• high impedance-earthed neutral,

• resistance earthing (High or Low)

• reactance earthing

The criterion for the earthing scheme should consider:

• Meeting AS/NZS 3000

• Elimination of electric-shock hazards to personnel caused by stray ground-fault currents in the ground-return path.

• Elimination of burning and melting effects in faulted electric equipment, such as switchgear, transformers, cables, and rotating machines.

• Elimination of mechanical stresses in circuits and apparatus carrying fault currents.

• Continuity of supply

• Elimination of the arc blast or flash hazard to personnel who may have accidentally caused or happen to be in close proximity to the ground fault.

• Elimination of the momentary line-voltage dip occasioned by the occurrence and clearing of a ground fault.

• Elimination of transfer of ground earth potentials

Stray current is always present in varying degrees in and adjacent to the rail corridor, thus making it a potential corrosive environment. In order that current isn’t transferred externally it is always necessary to electrically isolate all metal pipes and the like which cross or enter the rail corridor boundary and shall form part of the management plan.


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An integrated earthing and bonding management plan shall be provided. A bonding and earthing single line diagram shall be provided as part of this, to detail all the earthing and bonding which will form the ESDS earthing system, from 22kV/11kV supply through to the end loads such as point machines on the signalling system and communications equipment on the ESDS LV supply. The designer shall consider all earthing and bonding interfacing to the earthing and bonding management plan including but not limited to:

• Railway negative system (to the requirements of EN 50122)

• Meet the requirements of L1-CHE-STD-016, Track Bonding for Signalling and Traction Return Current

• Local power company electrical supplies

• Traction Substation Earthing

• UPS earthing

• Earthing of signal location boxes

• Earthing systems used in CER, SER and railway stations

• Earthing of cable screens

• At railway stations: canopies, steel stanchions and structures, metallic fences, light poles, mechanical services ductwork, mechanical services pipe work , fire and hydraulics pipe work, architectural steelwork , structural steelwork, lift guide rails, steel reinforcing, all mechanical services and any other structural steelwork

• Railway Bridges, in accordance with L1-CHE-STD-010, Railway Bridges Electrical Protection And Bonding

• Train Maintenance Buildings, in accordance with L1-SDD-STD-006, Train Maintenance Buildings Electrical Systems – Earthing And Bonding

All instances of the 3.3kV Essential Services Distribution System should utilise the same earthing scheme.

Railway 1500VDC System 7.6.2The running rails and associated negative system are not connected to structure earth or earth.

The earthing scheme shall take into account any ESDS equipment located in the overhead contact line and pantograph interference zones in accordance with EN 50122.

A voltage limiting device shall be considered for connection between the railway negative system and the earthing systems in accordance with EN 50122.


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Earthing Design 7.6.3An integrated High Voltage Earthing System for the ESDS shall be designed.

The Earthing System design shall consider all the requirements of AS2067, ENA’s EG0 and EG1 guidelines and EN 50121 and EN50122.

The Earthing System shall be capable of handling the full design fault current for the ESDS.

Prior to the detailed earthing design a full condition assessment report of the site shall be provided to determine the performance of the earthing system. The condition assessment report is to include a current injection test which is to be a low current power frequency test into any existing earthing system.

The report shall include but not limited to:

• Earth potential rise for worst case faults • Step and touch potentials • Transfer voltages to adjacent metallic structures • Inspection of the condition of the existing earth mat • Soil resistivity • Current distribution The overall Earthing System design shall consider:

• The termination of HV supply cable screens

• The interaction of the Earthing System and the adjacent Rail System in response to an Earth Potential Rise (in particular the signalling system and level crossings)

• The safety of HV Operators whilst working on or near the ESDS and in its environs

• The safety of the General Public and other MTM employees whilst in the Substation environs

• Reducing the prospective Step and Touch Potentials within and around the Substation to values considered safe for approach by Humans

• The integration of an existing Earthing System with the new Earthing System

• The bonding of fencing and metallic objects around the ESDS (or deliberate non-connection of metallic structures)

• The bonding of cable trays and metallic structures within the ESDS

• The reticulation of power to the ESDS loads

• Soil resistivity models in the area around the ESDS

• The lightning protection and earthing requirements of the DTRS facility

• The earthing requirements of the CCTV system including the Field LAN Switch (FLS) enclosures installed throughout the site and remote from the CER.

Earthing modelling shall be performed on recognised computer modelling software.


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CER Earthing Requirements 7.6.4The CER shall be provisioned with an earthing system design that shall consider all the requirements of:

• Provision for earth bonding to meet AS/NZS 3015 and AS/CA S009.

• Provision of lightning protection and surge filtering on the incoming room supply.

Particular consideration shall be taken for the installation of Field LAN Switch (FLS) enclosures throughout the site and remote from the CER that are housed in metal enclosures with the DC supply (-48V, positive earth) and earth from the CER connected to the metal enclosure.

DTRS Earthing Requirements 7.6.5The DTRS facility shall be provisioned with an earthing system design that shall consider the requirements of:

• Provision for earth bonding to meet AS/NZS 3015 and AS/CA S009.

• Provision of lightning protection and surge filtering on the incoming room supply.

SER Earthing Requirements 7.6.6SER and Zone Boxes earthing arrangement shall be installed as per standard drawings STD_G0009 and STD_G0010.

Where earth leakage detectors are installed, a separate test earth shall be installed.

Vic Track Communication Equipment Requirements 7.6.7The earthing arrangements for Vic Track communications equipment is to comply with AS/NZS 3000 (earthed neutral AC supply) and AS/NZS 3015 (sec. 4), and shall include a copper earth bar meeting the following requirements:

• A minimum cross sectional area of 150mm2.

• A minimum of 10 x M10 holes.

• Mounted to the wall using ≥ 35mm stand-off insulators.

• Connected to the main earth bar of the site via a ≥ 35mm2 insulated green/yellow copper conductors.

• Connected to the CER switchboard via a Bonding Terminal using ≥ 16mm2 insulated green/yellow copper conductors.


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Railway Station Earthing Requirements 7.6.8The earthing and bonding scheme for a railway station shall be integrated into the overall ESDS earthing and bonding scheme as per 7.6.3.

The non-designated ESDS electrical supply system of the railway station supplied from the power company shall ensure the MEN system of the local supply shall not be allowed to pick up DC leakage current. The recognised method of achieving this is to ensure the earth and neutral of the MEN supply is physically isolated from any part of station earthing and bonding.

A TN-CS system shall be used, in accordance with AS/NZ 3000 and IEC 60364 for the station non-designated lighting and power load such as lighting.

The overall station earthing and bonding strategy shall utilise an equipotential zone for the station which is isolated from the power company earthing and also is isolated from the railway negative system.

The use of a 400V/400-230V isolating transformer to separate the local Electricity Distributor’s MEN earth and neutral shall be used when an LV power company supply exists.

All 400/230V supplies within the station shall be configured as MEN systems. The ESDS derived supply and power company derived supply should have a common earth bar, neutral bar and MEN link as shown in Figure 1. The earthing and bonding report shall consider the suitability of this arrangement.

Station Earth

400V Essential Services Bus

3.3kV/400V

3.3kV ESDS Bus

400V Non-Essential Services Bus

400V/400Vor 22kV/400V etc.

Power Company Supply

Common Earth Bar

Neutral Bar

MEN Link

Transformer enclosure protective earth

Transformer enclosure protective earth

Figure 1: Typical Station Earthing Arrangement


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Where a dedicated power company supply is obtained for the station, the HV/LV transformer may be used as the isolating means. The power company transformer shall not be used to supply other consumers outside the station equipotential zone.

Suitable signage shall be provided to ensure the power company earth and station earths are not bridged.

Items outside the station equipotential zone (but supplied from the station), such as car park lighting and communication equipment will require a local isolation transformer. In terms of communication equipment fibre optic cables can be used for connection outside the equipotential zone. Alternative schemes may be utilised if approved by the Head of Engineering – Electrical.

Earthing and bonding of stations shall include consideration of overbridges and other structures.

Particular consideration shall be taken for the installation of Field LAN Switch (FLS) enclosures throughout the site and remote from the CER that are housed in metal enclosures with the DC supply (-48V, positive earth) and earth from the CER connected to the metal enclosure.

7.7 Lightning Protection A complete lightning protection system to AS 1768 shall be provided for the ESDS (inclusive of the requirements for the DTRS facility) for the protection of persons and property from hazards arising from exposure to lightning. This shall include a report explaining the basis for the design and specify the type and model of the proposed lightning arrestors.

7.8 Insulation Co-ordination A complete insulation co-ordination study for the ESDS system shall be provided in accordance with AS 1824.1 and AS 2067. The procedure outlined in AS 1824.1 shall be used for the insulation co-ordination study.

The ESDS shall be divided into subsystems which have the same insulation levels, including 3.3kV substation supply, trackside distribution, Signal Zone Boxes, CER room, SER room, DTRS Facility, Vic track Equipment Room, and Railway stations, Car parks, Train Stabling Yards and Maintenance facilities. The insulation co-ordination study shall take into account the adequate discrimination of insulation levels between each of these subsystems.

The insulation level shall be chosen according to the established highest voltage for equipment and impulse withstand voltage.

The level of insulation will be increased if required because of the method of neutral earthing.

The choice of insulation level shall be based on rated lightning impulse withstand voltages and rated short duration power frequency withstand voltages.

The insulation co-ordination study shall also consider the following for each subsystem:

• Maximum continuous overvoltages

• Temporary overvoltages


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• Switching overvoltages

• Lightning overvoltages

• Phase to ground voltage

• Basic Insulation Level

• Power Frequency, Flashover voltage

• Margin of Protection

The designer shall specify (by manufacturer and part number) the required protection devices including lightning arrestors. surge suppression and other devices to ensure the required insulation levels within each subsystem are adequately maintained with the requirements of the insulation co-ordination study.

7.9 Protection Co-ordination The design of protection for the ESDS power system shall consist of the following steps:

• General Scheme Design

• Protection Co-ordination Study

The General Scheme Design shall comprise of a report which includes but not limited to:

a) The proposed protection scheme philosophy including the primary and any back up protection functionality. This shall include the method of protection against phase to phase and phase to earth faults. The use of protection devices such as cable fault detectors shall be specified.

b) A Protection Block Diagram of the recommended protection scheme , using the main single line diagram and detailing each of the recommended protection relays, protection function numbers, connection of CTs and VTs to each protection relay and the tripping relationship between each protection relay and associated circuit breaker.

c) Other interface issues to the existing electrical system including existing protection systems at each Substation.

The Protection Co-ordination Study shall comprise a report which includes but not limited to:

a) A time-current coordination analysis. The analysis shall be performed with the aid of computer software intended for this purpose, and shall include the determination of settings, ratings, or models for the overcurrent protective devices recommended

b) Protection co-ordination shall be demonstrated between all the protection zones and with external power company equipment

c) Single Line Diagrams, which includes all the data required for the report as for example, type and rating of protection devices, associated current transformers, line impedances, short circuit currents and maximum loads

d) A sufficient number of computer generated plots shall be provided to indicate the degree of system protection coordination by displaying the time-current characteristics of series connected overcurrent devices and other pertinent system parameters.


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e) The study shall include a separate table containing the suggested device settings of all the protection relays

f) A discussion section which evaluates the degree of system protection and service continuity with the recommended protection relays, along with recommendations as required for addressing system protection or device coordination issues.

g) Current Transformer ratios and ratings and confirmation that the nominated relay will be compatible with the CTs and VTs

h) Full list of assumptions and input data used for the protection study

The ESDS system shall be broken up into protection zones, with a primary protection device, and if upon its failure a backup protection device to cover its protection zone.

The protection schemes shall be designed to eliminate or manage “blind spots”.

Fault clearing times shall be minimised.

The protection shall be graded to ensure that the fault is cleared by the protection closest to the fault, and the area of interruption is minimised.

Protection current transformers shall be connected to protection equipment only.

All protection CTs shall comply with AS 60044.1.

CTs shall be rigidly clamped to prevent movement under short circuit conditions. They shall be provided with rating plates and terminal markings as specified in AS 60044.1. The rating plates shall be mounted in such a manner that they are visible, and the secondary terminals shall be readily accessible. Duplicate rating plates shall be mounted in the instrument compartment with connection diagram.

Voltage transformers shall be manufactured and tested in accordance with AS 60044.2

8 Environmental and Climatic Conditions Installations, including all devices and auxiliary equipment that form an integral part of them for the ESDS shall be designed for operation under the climatic and environmental conditions detailed in AS 2067, except that the maximum ambient temperature is 50°C as required by Clause 2.4.3.4 of AS 2067, or higher if appropriate for the particular installation.

Additionally, the air shall be classed as pollution level III heavy (refer AS 4436) as required by Clause 2.4.3.3 of AS 2067.


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9 System Parameters The ESDS shall meet the parameters detailed in Table 1.

Table 1 ESDS System Parameters Parameter Value Unit

Nominal System Voltage (phase to phase) 3.3 kV

Primary Voltage Range +10 / -6 %

Nominal Frequency 50 Hz

Highest Voltage 3.6 kV

Standard Short Duration Power Frequency Withstand Voltage (Table 2 AS 1824.1) 10 kV

Standard Lightning Impulse Withstand Voltage (Table 2 AS 1824.1) 40 kV

10 Specific ESDS Power Supply Requirements

10.1 ESDS Distribution Reticulation Design The designer shall specify all the ESDS loads, including signalling, station and other loads such that the capacity of the ESAT can be specified

The capacity of the Substation power supply shall be determined by:

• Provision by the signal system designers of the actual number of power supply locations, including SERs required for the signalling system, the distribution feed locations, the power rating of each transformer and the distribution design.

• Provision by the Train Station designers of the required loads, including maximum demand for the railway stations for designated ESDS supply.

• Provision of CER loads and Vic Track loads by Operational Control System designers including maximum demand.

• A provision of 20% additional loading shall be made.

The minimum sizing of equipment shall be a 100kVA ESAT and 60kVA UPS. The size of the UPS shall increase in 60kVA modules. The rating of the UPS shall take into account the additional loading on two phases if feeding to an existing 2.2kV reticulation system.

The LV outputs of the ESDS shall remain in phase with the 22kV source supply.

In particular where the ESDS interfaces to signalling phase-sensitive equipment, the individual circuits shall be designed to maintain the correct phase of supply. Particular care shall be taken with AC track circuits, AC line relay circuits, searchlight signal circuits, and where changeover to an alternative supply occurs.

The total loading of all locations shall be allocated equitably between phases.


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Reticulation of the ESDS shall not occur via poles and aerial conductors or suspended cable.

The completed mains reticulation design shall be submitted for approval including the following information:

a) A mains distribution plan, showing the completed distribution scheme.

b) Location loading sheets, showing the details listed in the section above.

c) Voltage drop calculation sheets, showing how the estimated voltage drops were calculated.

The completed mains reticulation design should be submitted on a copy of the track plan/s for the project, bearing the following information:

• Feed location details (diagrammatically, using standard symbols), showing:

o Sources of supply

o Emergency changeover equipment

o Surge protection

o Simplified distribution switching

• Cable details:

o Active and Common cables

o Identification of cable function

10.2 Signal Power Supply Signalling supply at all trackside load points shall be nominal 110V AC, single phase two wire supply.

The power supply reticulation system shall be designed to meet the following voltage drop criteria, under the defined load conditions:

a) The maximum end to end voltage drop shall not exceed 10% for static and dynamic loads combined taken from the Substation ESDS 3.3kV bus to the 110V bus.

b) Item (a) shall be met with the normal ESDS feeding arrangement as well as the backup feeding arrangement. The backup feeding arrangement may consist of feeding from one substation, past the next and up to the third substation in one direction.

c) An allowance of 20% of the calculated load shall be applied for future load expansion

The designer and installer shall ensure that any new or modified mains supply and distribution system will meet the specified requirements for voltage drop under all static and transient load conditions, with an adequate reserve capacity for future additions

The reticulation design shall be submitted to the Head of Engineering - Electrical and Head of Engineering - Signals for approval and shall include detailed calculations of each of the following loads:


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Static Loads

These are devices presenting a continuous and essentially constant value of load, over extended periods e.g. Signal lights, all transformer/rectifier sets, Computer Based Interlockings, etc.

Occasional Loads

These devices are not normally on, but may be switched on at times for extended periods, generally not exceeding an hour e.g. Location lighting and instrument outlets.

Transient Loads

These devices are also not normally on, but when switched on, present significant loads for brief periods, generally of several seconds e.g. Trainstops, points machines, level crossings, etc.

All transformers are subject to losses of two kinds – iron losses (magnetisation current) and copper losses (I2R losses in the windings).

For each transformer in a mains feeder, an allowance shall be added equal to 15% of the calculated downstream load.

Cable lengths between locations shall be as determined on the site, and shall include suitable allowances for route deviation and cable termination. They shall be not less than the exact measured length along the actual cable route, plus 10 metres.

Cable sizes shall be selected such that the final total voltage drop from the feed location to the extremity of each feeder does not exceed the specified limits.

10.3 SER Power Supply SERs shall be supplied from the ESDS at 400V/230V. A switchboard shall be provided which in turn feeds lighting and power and loads as described in 10.2 via a 400V/110V or 230V/110V transformer, as well as the UPS to back up the CBI supplies.

10.4 CER Power Supply The CER electrical distribution shall meet the requirements of MTM Communications Equipment Room Standard (Draft).

10.5 Vic Track Power Supply Vic Track requires a minimum of eight (8) single phase 230V earthed neutral circuits, which can support a minimum load of 4kVA. The CER switchboard and cabling shall comply with AS/NZS 3000.

10.6 Railway Station Power The ESDS shall supply at railway substations shall only supply designated ESDS loads and may only be varied by the Head of Engineering - Electrical.

The power company supply shall supply all other loads including safety services including but not limited to:


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• Car parks owned and operated by MTM shall be supplied via metered sub-mains from the Installation Main Switchboard, fed from the Local Electricity Distributor supply.

• General Lighting and Power

• Rail Siding Lighting

Particular consideration shall be taken for the installation of Field LAN Switch (FLS) enclosures throughout the site and remote from the CER that are housed in metal enclosures with the DC supply (-48v, positive earth) and earth from the CER connected to the metal enclosure.

Cables shall be selected in accordance with AS/NZS 3008.1.1, based on:

• current carrying capacity, taking into account derating factors for “method of installation”, “grouping of circuits” and “external influences”

• earth fault loop impedance

• voltage drop

• cable short circuit rating

The ESDS supply and power company supply shall follow different routes and shall not be installed in the same conduit or ducting.

Cable routes shall have 30% spare capacity to allow for future electrical wiring.

Conduits and wiring shall generally be concealed and fixed by suitable supports and cable trays. No exposed conduits shall be used unless agreed to by MTM. To this end conduits shall be chased in masonry walls and appropriately sealed in a manner consistent with the finished surface. If surface mounted, these shall be neatly fixed to ensure station or building appearance is not compromised

Steel conduit is not permitted due to stray dc currents and corrosion issues,

For major non-underground cable runs consisting of multiple cables/conduits, including suspended cables, the use of cable trays or ladders is required. Any reference to cable trays shall equally apply to cable ladders.

Cable trays shall be perforated steel and hot dipped galvanised, have purpose made tees, bends etc., and be from the same manufacturer. These shall be sized to cater for the required cable runs, with an allowance of 30% spare space for future cabling.

Where cable trays carry other than electrical conduits, the required separation distances or physical isolation shall be provided.

Cable trays shall be run in such a manner as to follow the structural members of building. Tee-offs shall be implemented in a manner that has minimum visual impact on the building or facility in which they are installed.

The height and disposition of cable tray runs shall give due consideration to safe and easy accessibility by ladder, preferably located so access can occur outside a Train Track Possession.

Cables shall be neatly installed on cable trays, utilising proprietary straps and fixings. Cable spacing shall be in accordance with AS 3008 and de-rating shall be avoided. A 30% spare capacity shall be provided.


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The Isolating transformer used at the power distribution supply shall be a transformer with protective separation between the input and output windings which conforms to AS/NZS 61558. Generally, this is a three phase Dyn1 400V/400V transformer or single phase 230V/230V transformer that isolates the Local Electricity Distributor’s Service Equipment (MEN earth) from any part of the ESDS distribution system.

All design and installation of ESDS and distribution company power supply, equipment and systems shall be in accordance with AS/NZ 3000.

The Myki system will require connection to the ESDS and shall be fed from its own circuit breaker from the ESDS 400V busbar.

11 Equipment and Installation

11.1 General Specifications Equipment for the ESDS power distribution system shall follow the following specifications:

Document Number Title L1-CHE-SPE-024 Technical Specification for Uninterruptable Power Supplies For

The Metropolitan Railway

L1-CHE-SPE-154 Essential Services Distribution System Specification

L1-CHE-SPE-014 Technical Specification for Auxiliary Transformer for Use in a Railway Substation

L1-CHE-SPE-150 Technical Specification for 3.3kV Automatic Control and Indicated Fixed Mounted Trackside Switchgear for Signal Purposes

L1-CHE-SPE-039 Signal Power Transformer 3.3kV/1kV/110V

L1-CHE-SPE-070 High Voltage Cable Routes ESDS equipment shall be selected and installed to satisfy the requirements for selection, compliance, personal safety and labels of sections 4.1.1 to 4.1.4 inclusive, of AS 2067.

11.2 Trackside 3.3kV Signal Equipment Location A single phase dual conversion UPS shall be provided at each 3.3kV Signal Equipment location to ensure power is available to the location for operation of SCADA and the switchgear.

The UPS shall be the same capacity as the step down transformer and shall be able to sustain the capacity for a 24hour outage of the main 3.3kV supply.

A supply from a local power company shall not be used as a backup supply.


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12 Inspection and Testing Inspections and tests shall be carried out on the ESDS to verify compliance with this specification, design and installation with the applicable standards and compliance of the equipment with the applicable technical specifications.

A full inspection and test plan shall be used in accordance with AS 2067 and AS/NZ 3000.

13 Documentation

13.1 General All documentation shall be provided in English.

One electronic and eight paper copies of the each document shall be provided and the content shall be identical in each copy.

Every page of the documentation shall be clearly identified in relation to the document to which it belongs and the version of that document. All pages of multi-page documents shall be uniquely numbered. It shall be possible to readily determine if all pages of a document are present.

Manuals shall be A4 size and shall be bound in durable covers or in 4-D ring binders.

13.2 Design Process The design process shall consist of system design review (SDR), preliminary design review; (PDR) and critical design review (CDR) design phases in accordance with L1-CHE-MAN-001. The deliverables for each of the phases is provided in Appendix B.

13.3 Operation and Maintenance Manual The ESDS shall have an operation and maintenance manual as per Section 10 of AS 2067

13.4 Design Documentation All drawings must comply with PTV Infrastructure Drafting Standard and shall be submitted for MTM approval prior to manufacturing.

Files shall be provided in Microstation and PDF format on compact disk (CD).

13.5 Technical Maintenance Plan A Technical Maintenance Plan which establishes the maintenance policy for various devices recommended by the suppliers shall be provided. This shall detail the preventative servicing schedules, maintenance instructions and intervals for all components of the ESDS. The servicing schedules shall reference appropriate detailed maintenance instructions in the manufacturer’s manual.

The Technical Maintenance Plan shall contain a list of any recommended spare parts, detailing price, supplier and procurement lead-times.

HEAD OF ENGINEERING ELECTRICAL SPECIFICATION 3.3KV ESSENTIAL SERVICES DISTRIBUTION SYSTEM



14 Appendices

14.1 Appendix A - Essential Services Distribution System Single Line Diagram

22kV

400V

3.3kV

110V 110V400V/230V


Signal Supply to CBI and

accessoriesand axle counters

Communications Equipment Room

(Security CCTV, Passenger

Information)

Lighting and Power Supply to SER and

CER

110V

UPS

3.3kV Essential Service SupplySingle Line Diagram – V7

20/7/2016

Substation A

Signal Zone Box Signal Zone Box Signal Equipment Room

Railway Station Supply

400 V

Substation B

Signal Field Equipment e.g. point machines

400 V

400V

External Supply for L&P for Station and Commercial

Premises

Light and Power Loads

UPS

110V

400V Essential ServicesBus

Communications Equipment Room (Security Systems CCTV, Passenger

Information)

UPS

230V

CER Air Conditioning

MYKI Ticketing

Isolating Transformer

DTRS Location, CER or Vic Track Comms Room

400/230V

Lighting and Power Supply

Communications Equipment

CER Light and Power

NotesAll 3.3kV Circuit Breakers are Controlled and Indicated

Cable Fault LocatorRefer L1-CHE-STD-015 -Electrical Networks Principles and Performance-Standard for RequirementsSER Signal Equipment RoomCER Communications Equipment Room


Battery

SCADA Interface

Battery

SCADA Interface

22kV

400V

3.3kV


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14.2 Appendix B - Substation Essential Services Single Line Diagram

400V/3.3kVDyn1

Substation L&P 400V

Board

3.3kV Switchgear

3.3kV UPS System

Synchronisation Signal

Synchronisation Logic

(Phase relationship to be confirmed)

Battery Bank

Static Switch

400V 3 phase UPS

22kV Bus

400V Bus


Battery Isolator

Manual Bypass Switch

22kV/400VDyn11

Substation Earth


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400V/2.2kVDyn1

Substation L&P 400V

Board

2.2kV Switchgear

2.2kV UPS System


Synchronisation Logic

Battery Bank

Static Switch

400V 3 phase UPS

22kV Bus

400V Bus

2.2kV in phase with 22kV


Battery Isolator

Manual Bypass Switch

W-B only connected at output terminals

22kV/400VDyn11

Substation Earth


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14.3 Appendix C - Design Deliverables

Deliverables-ESS-Substation and HV Reticulation Document Type SDR PDR CDR Subject

GENERAL -COVER SHEET AND LEGEND-INCLUDES UPS Document General DESIGN MANAGEMENT PLAN Report General DESIGN SCOPE AND BRIEF/WORK BREAKDOWN STRUCTURE Document

General

PHYSICAL BOUNDARY OF PROJECT Drawing General SAFETY IN DESIGN REPORT Report General ENGINEERING CHANGE Report General STANDARD/DESIGN WAIVERS Report General SUBSTATION ARCHITECTURAL - COVER SHEET AND LEGEND Drawing

Architectural

DRAWING SCHEDULE Drawing Architectural SITE PLAN Drawing Architectural GROUND LEVEL FLOOR PLAN AND DETAIL Drawing Architectural GENERAL ARRANGEMENT - ELEVATIONS Drawing Architectural INTERNAL ELEVATIONS Drawing Architectural EXTERNAL ELEVATIONS Drawing Architectural GENERAL ARRANGEMENT - SECTIONS AND DETAILS Drawing Architectural SUBSTATION - COVER SHEET & LEGEND - CIVIL-INCLUDES UPS Drawing

Civil

DRAWING SCHEDULE Drawing Civil GENERAL CIVIL NOTES Drawing Civil CIVIL WORKS - LAYOUT PLAN Drawing Civil DRAINAGE - LAYOUT PLAN Drawing Civil CIVIL WORKS - CROSS SECTIONS Drawing Civil SERVICES - LAYOUT Drawing Civil MODULAR BUILDING FOOTINGS (INCLUDING CALCULATIONS) Drawing

Civil

SUBSTATION COVER SHEET & LEGEND - STRUCTURAL Drawing Structural DRAWING SCHEDULE & STRUCTURAL LEGENDS Drawing Structural GENERAL NOTES Drawing Structural DEMOLITION AND INTERNAL MODIFICATION DETAILS Drawing Structural 3.3KV - COVER SHEET & GENERAL NOTES, DRAWING LEGEND & DETAIL - HV POWER Drawing

Electrical (HV)

3.3KV SUBSTATION - DRAWING SCHEDULE Drawing Electrical (HV) 3.3KV SIGNAL SUPPLY DISTRIBUTION PLAN(RED/YELLOW) Drawing

Electrical (HV)

3.3KV SUBSTATION - SITE PLAN Drawing Electrical (HV) SUBSTATION - ENGINEERING SINGLE LINE DIAGRAM - FINAL STAGE Drawing

Electrical (HV)

SUBSTATION - OPERATING SINGLE LINE DIAGRAM - FINAL STAGE Drawing

Electrical (HV)

3.3 KV AC SYSTEM PROTECTION AND CONTROL - SCHEMATIC Drawing

Electrical (HV)

3.3 KV HV AC SYSTEM PROTECTION AND - CONTROL SCHEMATIC Drawing

Electrical (HV)

SUBSTATION EQUIPMENT SAFETY EARTH - INTERLOCKING OPERATION SCHEDULE (IF REQUIRED) Drawing

Electrical (HV)

3.3KV SUBSTATION - POWER CABLING BLOCK / C&I / EARTHING DIAGRAM Drawing

Electrical (HV)

3.3KV POWER EQUIPMENT LAYOUT PLAN (SCALED AND DEMENSIONED) Drawing

Electrical (HV)

3.3KV – WIRING INTERCONNECTION DIAGRAM (INCLUDING TERMINAL CONNECTIONS) Drawing

Electrical (HV & LV)

BUILDING INTERCONNECTION DIAGRAM (MODULAR BUILDING TO EXISTING BUILDING) Drawing

Electrical (HV & LV)


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SUBSTATION - CABLE CONTAINMENT LAYOUT PLAN (INCLUDING FIXING AND SUPPORTS WHERE REQUIRED) FOR LV AND HV)

Drawing

Electrical (HV)

CABLING DETAILS – METHODS AND SPECIALISED HARDWARE FOR SUPPORT OF HV CABLES Drawing

Electrical (HV)

SUBSTATION INTERNAL 3.3KV CABLE LAYOUT DRAWING (INCLUDING FIXING AND CABLE SUPPORT DETAILS WHERE APPROPRIATE)

Drawing

Electrical (HV)

LV AUXILIARY AND CONTROL CABLE LAYOUT DRAWING (INCLUDING FIXING AND CABLE SUPPORT DETAILS) Drawing

Electrical (HV)

SUBSTATION - TRENCH AND CONDUITS LAYOUT PLAN Drawing Electrical (HV) TRENCH AND CONDUITS LAYOUT DETAILS Drawing Electrical (HV) SUBSTATION EARTH GRID LAYOUT PLAN (IF REQUIRED) Drawing Electrical (HV) SUBSTATION - SUBSTATION EARTHING LAYOUT PLAN (IF REQUIRED) Drawing

Electrical (HV)

CABLE AND TERMINATION SCHEDULE (HV, LV,EARTHING) Drawing

Electrical (HV)

CABLE AND TERMINATION SCHEDULE (LVACDC) Drawing Electrical (HV) SCADA I/O POINTS LIST Drawing Electrical (HV) SUBSTATION - SUBSTATION MAIN EARTH BAR DETAIL Drawing Electrical (HV) UPS CONNECTION DETAILS Drawing Electrical (HV) ELECTRICAL - COVER SHEET & GENERAL NOTES AND ABBREVIATIONS – LOW VOLTAGE Drawing

Electrical (LV)

ESS - ELECTRICAL - SCHEMATICS - 400V SWITCHBOARD Drawing Electrical (LV) ESS - ELECTRICAL - SCHEMATICS - 400V SWITCHBOARD - CONTROL (INCLUDING SCADA CONTROL & INDICATION)

Drawing

Electrical (LV)

ELECTRICAL - SCHEMATICS - LIGHTING & EARTHING Drawing Electrical (LV) ELECTRICAL - DRAWING SCHEDULE Drawing Electrical (LV) ELECTRICAL - SITE PLAN - LIGHTING LAYOUT Drawing Electrical (LV) ELECTRICAL - FLOOR PLAN - LIGHTNING LAYOUT Drawing Electrical (LV) ELECTRICAL - FLOOR PLAN - POWER LAYOUT Drawing Electrical (LV) ELECTRICAL - DETAILS Drawing Electrical (LV) ELECTRICAL - SCHEMATICS - 400V SWITCHBOARD Drawing Electrical (LV) ELECTRICAL - SCHEMATICS - 400V SWITCHBOARD - CONTROL (INCLUDING SCADA CONTROL & INDICATION) Drawing

Electrical (LV)

EAST DANDENONG SUBSTATION - ELECTRICAL - SCHEMATICS - LIGHTING & EARTHING Drawing

Electrical (LV)

TELECOMMUNICATIONS LAYOUT - EXTERNAL PATHWAYS - DEPENDENT ON PROTECTION REPORT Drawing

Telecommunications

TELECOMMUNICATIONS LAYOUT - EXTERNAL PATHWAYS - DEPENDENT ON PROTECTION REPORT Report

Telecommunications

EARTHING AND BONDING -COVER SHEET AND LEGEND Drawing Earthing & Bonding EARTHING AND BONDING INTEGRATION PLAN Document Earthing & Bonding EARTHING AND BONDING SINGLE LINE DIAGRAM Drawing Earthing & Bonding SITE INVESTIGATION AND HAZARD ASSESSMENT Drawing Earthing & Bonding SOIL EARTH RESISTIVITY MEASUREMENT Drawing Earthing & Bonding SOIL EARTH RESISTIVITY MODELLING Drawing Earthing & Bonding AC FAULT LEVEL CALCULATION Drawing Earthing & Bonding 1500 VDC FAULT LEVEL CALCULATION Drawing Earthing & Bonding SPECIFIC ELECTROLYSIS ISSUES Drawing Earthing & Bonding 1500 VDC BONDING REQUIREMENTS Drawing Earthing & Bonding DESIGN TARGETS Drawing Earthing & Bonding FAULT CURRENT MODELLING AND DISTRIBUTION Drawing Earthing & Bonding EPR CALCULATION Drawing Earthing & Bonding STEP AND TOUCH VOLTAGE CALCULATION Drawing Earthing & Bonding ELECTROLYSIS MITIGATION MEASURES Drawing Earthing & Bonding BONDING/INSULATION REQUIREMENTS Drawing Earthing & Bonding


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EARTHING AND BONDING SINGLE LINE DIAGRAM Drawing Earthing & Bonding ANALYSIS OF TRANSFERRED EPR Drawing Earthing & Bonding CRITICAL EARTHING DESIGN REPORT Drawing Earthing & Bonding CONSTRUCTION DRAWINGS AND INFORMATION Drawing Earthing & Bonding FINAL EARTHING DESIGN REPORT Drawing Earthing & Bonding INSULATION CO-ORDINATION COVER SHEET AND LEGEND Drawing

Insulation Coordination

INSULATION CO-ORDINATION REPORT Report


INSULATION CO-ORDINATION-DIAGRAM OF PROTECTION ZONES/INSULATION LEVELS Drawing


PROTECTION CO-ORDINATION COVER SHEET AND LEGEND Drawing

Protection Co-ordination

SUBSTATION PROTECTION BLOCK DIAGRAM Drawing


RETICULATION SYSTEM BLOCK DIAGRAM Drawing


CONCEPT PROTECTION SCHEME DESIGN Drawing


CT/VT SIZES Document


PROTECTION EQUIPMENT SELECTION Document


PROTECTION CO-ORDINATION STUDY Document


RETICULATION DESIGN Drawing

Reticulation Design

MAINS DISTRIBUTION PLAN Drawing Reticulation Design LOCATION LOADING SHEETS Document Reticulation Design VOLTAGE DROP CALCULATION SHEETS Document Reticulation Design QUALITY ASSURANCE COVER SHEET AND LEGEND Document Quality Assurance TECHNICAL MAINTENANCE PLAN Document Quality Assurance ASSET CLASS REPORT (REFER 6.0) Document Quality Assurance


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14.4 Appendix D - Designated ESDS Devices The 3.3 kV Essential Services Distribution System supplies the signalling power supplies, communications power supplies and other essential services.

The following specific apparatus shall be supplied by the Essential Services Distribution System:

• Digital Train Radio transmitters, receivers and communication nodes • All fibre optic and communication devices associated with train operations, signalling,

data transmission, passenger information and security • Security systems to stations, signal boxes and Train Maintenance Facilities • Air conditioners where the system is required for the safe and reliable operation of

essential service devices • CCTV systems • Passenger Information Systems and interfaces • Railway Station Public Address Systems • Metrol (where practical) • Centrol (where practical) • Electrol (where practical) • The Disaster Recovery Centre (where practical) • Lighting to signal relay, signalling computer rooms and CERs • Emergency lighting at stations • Track circuits • Signalling relays • All signalling interlockings • Signals and trainstops • Point machines • All signalling control and indication devices • Signal box computer screens, mimic panels and indicators • Level crossing detection, control and operation • Train Protection and Warning System • Axle Counters • OCS signalling interfaces • CBTC systems • Ticketing Equipment Variation from the list provided in L1-CHE-STD-015(1) Electrical Networks Principles and Performance represents a refinement of the system and will be updated in future versions of that standard. Additional apparatus may be supplied from the system on a case by case basis, only with the approval of the Head of Engineering – Electrical.

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