signalling symbols

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Technical Note - TN 034: 2017 © State of NSW through Transport for NSW 2017 Page 1 of 5 Subject: ETCS symbology used for signalling documentation Technical Note - TN 034: 2017 For queries regarding this document [email protected] www.asa.transport.nsw.gov.au Issued date: 14 August 2017 Effective date: 14 August 2017 This technical note is issued by the Asset Standards Authority (ASA) to notify of updates to T HR SC 00004 ST Signalling Design Requirements Signalling Symbols, version 1.0. The amendment includes the clarification of symbology associated with the European Train Control System (ETCS) to be shown on signalling plans and circuit books. 1. Section 6.1.12 Existing Section 6.1.12 ETCS symbols shall be replaced with the following content in its entirety: 6.1.12 ETCS symbols Figure 17 shows the ETCS symbols used on signalling plans.

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Page 1: Signalling Symbols

Technical Note - TN 034: 2017

© State of NSW through Transport for NSW 2017 Page 1 of 5

Subject: ETCS symbology used for signalling documentation

Technical Note - TN 034: 2017

For queries regarding this document [email protected]

www.asa.transport.nsw.gov.au

Issued date: 14 August 2017

Effective date: 14 August 2017

This technical note is issued by the Asset Standards Authority (ASA) to notify of updates to

T HR SC 00004 ST Signalling Design Requirements – Signalling Symbols, version 1.0. The

amendment includes the clarification of symbology associated with the European Train Control

System (ETCS) to be shown on signalling plans and circuit books.

1. Section 6.1.12 Existing Section 6.1.12 ETCS symbols shall be replaced with the following content in its entirety:

6.1.12 ETCS symbols

Figure 17 shows the ETCS symbols used on signalling plans.

Page 2: Signalling Symbols

Technical Note - TN 034: 2017

© State of NSW through Transport for NSW 2017 Page 2 of 5

Figure 17 – ETCS (ATP) trackside symbols

Page 3: Signalling Symbols

Technical Note - TN 034: 2017

© State of NSW through Transport for NSW 2017 Page 3 of 5

2. Section 6.3.6 The following new Section ETCS circuit book symbols shall be added after Section 6.3.5:

6.3.6 ETCS circuit book symbols

Figure 42 shows the ETCS symbols used on circuit books.

Page 4: Signalling Symbols

Technical Note - TN 034: 2017

© State of NSW through Transport for NSW 2017 Page 4 of 5

Figure 42 – ETCS (ATP) circuit book symbols

Page 5: Signalling Symbols

Technical Note - TN 034: 2017

© State of NSW through Transport for NSW 2017 Page 5 of 5

Authorisation:

Technical content prepared by

Checked and approved by

Interdisciplinary coordination checked by

Authorised for release

Signature

Date

Name Daniel Oakes Peter J McGregor Jason R Gordon Jagath Peiris

Position Principal Engineer Technical Standards

Lead Signals and Control Systems Engineer

Chief Engineer Director Network Standards and Services

Page 6: Signalling Symbols

Technical Note - TN 071: 2016

Technical Note - TN 071: 2016

Subject: Impedance bond legend for track insulation plans

Issued date: 18 October 2016

Effective date: 18 October 2016

For queries regarding this document [email protected]

www.asa.transport.nsw.gov.au

This technical note is issued by the Asset Standards Authority (ASA) to notify updates to

T HR SC 00004 ST Signalling Design Requirements – Signalling Symbols, version 1.0. The

amendment includes the provision of two legend tables to be shown on track insulation plans

applicable to new works for identifying the different impedance bond types.

The following new section Impedance bond configurations shall be added after section 6.2.1 and replace the existing Figure 19 Frequency track circuit symbols.

© State of NSW through Transport for NSW Page 1 of 3

Page 7: Signalling Symbols

Technical Note - TN 071: 2016

Impedance bond configurations

The symbols representing the different impedance bond configurations for use on track insulation

plans are shown in Figure 19.

TRACTION BETWEEN J/S AND JOINTLESS TRACK CIRCUITS

XX/R MU/ETU

TRACTION BETWEEN DOUBLE RAIL J/S TRACK CIRCUITS

XX/R /R

DR DRDR

X – DENOTES LMPEDAN/E BOND TYPE, SEE TABLE 1 AND TABLE 2

TRACTION BETWEEN DOUBLE RAIL J/S TRACK CIRCUITS

(CIT 1400 CT1)

XX/LT

1400/TL

DR DR

/LT1400/TL

TRACTION BETWEEN DOUBLE RAIL J/S TRACK CIRCUITS AND EBI 200 TI21 TRACK CIRCUITS

(INC LINE MATCHING UNIT)

XX

WS DR EBL 200 TL21

ETU LMU/R

TRACTION BETWEEN DOUBLE RAIL J/S TRACK CIRCUITS AND EBI 200 TI21 TRACK CIRCUITS

XX

WS DR EBL 200 TL21

ETU/R

TRACTION TIE-IN BONDING ARRANGEMENTS

X

X

X – DENOTES LMPEDAN/E BOND TYPE, SEE TABLE 1 AND TABLE 2

X – DENOTES LMPEDAN/E BOND TYPE, SEE TABLE 1 AND TABLE 2

X – DENOTES LMPEDAN/E BOND TYPE, SEE TABLE 1 AND TABLE 2

X – DENOTES LMPEDAN/E BOND TYPE, SEE TABLE 1 AND TABLE 2

X – DENOTES LMPEDAN/E BOND TYPE, SEE TABLE 1 AND TABLE 2

Figure 19 – Impedance bond configuration symbols

© State of NSW through Transport for NSW Page 2 of 3

Page 8: Signalling Symbols

Technical Note - TN 071: 2016

Impedance bond legend tables, as shown in Table 1 and Table 2 shall be provided on track

insulation plans for new work to identify the different impedance bond types.

Table 1 – Impedance bond legend for 1000 A/rail impedance bonds

Impedance bond type Applicable track circuit type Legend identifier

MJ 50 Hz & CSEE 'J'

MJX 50 Hz & CSEE 'J'

Siemens DD131 50 Hz 'J'

MJS 50 Hz, CSEE & FS2600 'J'

MACOLO/ABW 50 Hz, CSEE & FS2600 'J'

CIT 1400 CTI CSEE & Jeumont Schneider '1P'

Table 2 – Impedance bond legend for 2000 A/rail impedance bonds

Impedance bond type Applicable track circuit type Legend identifier

2000R (Siemens only) 50 Hz 'R'

2000R (AF) (Siemens & ABW Types) CSEE, MLTI21 & FS2500 'A1'

2000P Jeumont Schneider '2P'

EB Signals B3 4000 CSEE, MLTI21 & FS2500 'A2'

For retrofit design alterations, a pragmatic approach shall be taken when providing the

impedance bond legend, with consideration to the identification of existing impedance bonds

unaffected by the proposed design, discretion may be used by the AEO in applying the legend

tables.

Authorisation:

Technical content prepared by

Checked and approved by

Interdisciplinary coordination checked by

Authorised for release

Signature

Date

Name Daniel Oakes Omer Saricilar Peter McGregor Graham Bradshaw

Position Principal Engineer Technical Standards

A/Lead Signals and Control Systems Engineer

A/Chief Engineer Director Network Standards and Services

© State of NSW through Transport for NSW Page 3 of 3

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Signalling Design Requirements – Signalling Symbols

T HR SC 00004 ST

Standard

Version 1.0

Issued date: 11 March 2016

Important Warning This document is one of a set of standards developed solely and specifically for use on Transport Assets (as defined in the Asset Standards Authority Charter). It is not suitable for any other purpose. You must not use or adapt it or rely upon it in any way unless you are authorised in writing to do so by a relevant NSW Government agency. If this document forms part of a contract with, or is a condition of approval by a NSW Government agency, use of the document is subject to the terms of the contract or approval. This document is uncontrolled when printed or downloaded. Users should exercise their own skill and care in the use of the document. This document may not be current. Current standards may be accessed from the Asset Standards Authority website at www.asa.transport.nsw.gov.au. © State of NSW through Transport for NSW

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T HR SC 00004 ST Signalling Design Requirements – Signalling Symbols

Version 1.0 Issued date: 11 March 2016

Standard governance

Owner: Lead Signals and Control Systems Engineer, Asset Standards Authority

Authoriser: Chief Engineer, Asset Standards Authority

Approver: Executive Director, Asset Standards Authority on behalf of the ASA Configuration Control Board

Document history

Version Summary of Changes

1.0 First issue.

For queries regarding this document, please email the ASA at [email protected] or visit www.asa.transport.nsw.gov.au

© State of NSW through Transport for NSW

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T HR SC 00004 ST Signalling Design Requirements – Signalling Symbols

Version 1.0 Issued date: 11 March 2016

Preface The Asset Standards Authority (ASA) is an independent unit within Transport for NSW (TfNSW)

and is the network design and standards authority for defined NSW transport assets.

The ASA is responsible for developing engineering governance frameworks to support industry

delivery in the assurance of design, safety, integrity, construction, and commissioning of

transport assets for the whole asset life cycle. In order to achieve this, the ASA effectively

discharges obligations as the authority for various technical, process, and planning matters

across the asset life cycle.

The ASA collaborates with industry using stakeholder engagement activities to assist in

achieving its mission. These activities help align the ASA to broader government expectations

of making it clearer, simpler, and more attractive to do business within the NSW transport

industry, allowing the supply chain to deliver safe, efficient, and competent transport services.

The ASA develops, maintains, controls, and publishes a suite of standards and other

documentation for transport assets of TfNSW. Further, the ASA ensures that these standards

are performance-based to create opportunities for innovation and improve access to a broader

competitive supply chain.

T HR SC 00004 ST Signalling Design Requirements – Signalling Symbols provides the

standard (typical) signalling symbols that are used throughout the life cycle of a signalling

project or asset.

This standard has been developed by the ASA and approved by the ASA configuration control

board.

This standard is a first issue.

© State of NSW through Transport for NSW Page 3 of 38

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T HR SC 00004 ST Signalling Design Requirements – Signalling Symbols

Version 1.0 Issued date: 11 March 2016

Foreword

T HR SC 00004 ST forms part of a suite of signalling design requirement standards that are

currently being developed by the ASA. The new signalling design requirement standards will

eventually replace the following existing RailCorp standards:

• QSDP1 Procedures and Work Instructions Index

• SPG 0703 Signalling Documentation and Drawings

• TMGG 1550 Signalling Documentation Guidelines

• TMGA 1510 Signalling Design Process for Projects Managed by Third Parties

• EGG 1542 ATP Trackside Design Guideline

• EGG 1648 Control Tables Format and Syntax

© State of NSW through Transport for NSW Page 4 of 38

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T HR SC 00004 ST Signalling Design Requirements – Signalling Symbols

Version 1.0 Issued date: 11 March 2016

Table of contents 1. Introduction .............................................................................................................................................. 6

2. Purpose .................................................................................................................................................... 62.1. Scope ..................................................................................................................................................... 62.2. Application ............................................................................................................................................. 6

3. Reference documents ............................................................................................................................. 6

4. Terms and definitions ............................................................................................................................. 7

5. Configuration ........................................................................................................................................... 7

6. Symbols .................................................................................................................................................... 86.1. Signalling plan symbols ......................................................................................................................... 86.2. Track insulation plan symbols ............................................................................................................. 226.3. Circuit book symbols ............................................................................................................................ 266.4. Compressed air systems ..................................................................................................................... 346.5. Legacy and obsolete symbols ............................................................................................................. 37

© State of NSW through Transport for NSW Page 5 of 38

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T HR SC 00004 ST Signalling Design Requirements – Signalling Symbols

Version 1.0 Issued date: 11 March 2016

1. Introduction The ASA owns and maintains the standard signalling symbols that are used on various

signalling documentation, such as signalling plans, driver's diagrams, track insulation, air

system plans and circuit books.

2. Purpose The purpose of this document is to provide the standard symbols that are used as a basis to

perform signalling design on the Sydney metropolitan rail area. This standard aims to provide

consistency in applying the standard signalling symbols across the TfNSW heavy rail network

and for all organisations involved throughout the life cycle of the asset.

2.1. Scope For new and retrofit installations, this document can be used as a standard template for the

production, review and verification of specific signalling designs, for a particular asset or

system.

Signals are built up of various elements such as signal heads, subsidiary light units and route

indicators to suit the situation; not every possible configuration is shown in this standard.

2.2. Application This standard applies to various signalling equipment, infrastructure types and configurations to

suit the current assets in use and for new installations.

This standard applies to AEOs and competent personnel engaged in the provision of services

relating to rail signalling infrastructure across the whole asset life cycle.

This standard applies to the signalling systems within the Sydney metropolitan rail area.

3. Reference documents The following documents are cited in the text. For dated references, only the cited edition

applies. For undated references, the latest edition of the referenced document applies.

Transport for NSW standards

ESG 007 Glossary of Signalling Terms

ESG 100 Signal Design Principles

SPG 0703 Signalling Documentation and Drawings

T HR SC 00001 ST Circuit Design Standard – Typical Circuits

TMGG 1550 Signalling Documentation Guidelines © State of NSW through Transport for NSW Page 6 of 38

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T HR SC 00004 ST Signalling Design Requirements – Signalling Symbols

Version 1.0 Issued date: 11 March 2016

T MU MD 00006 ST Engineering Drawings and CAD Requirements

4. Terms and definitions Note: For signalling related terms and definitions see ESG 007.

The following terms and definitions apply in this document:

AEO Authorised Engineering Organisation; a legal entity (which may include a Transport

Agency as applicable) to whom the ASA has issued an ASA Authorisation

ASA Asset Standards Authority

CAD computer-aided design

EOL emergency operation lock

EP electro pneumatic

ESML emergency switch machine lock

ETCS European train control system; a three level, unified, modular automatic train protection

specification to enhance interoperability across Europe

RailCorp Rail Corporation New South Wales

Signal branch variety of signalling equipment manufactured and supplied to the rail network,

circa 1920-1980

Sydney metropolitan rail area area bounded by Wickham (in the north), Richmond (in the

northwest), Bowenfels (in the west), Macarthur (in the southwest) and Bomaderry (in the south),

and all connection lines and sidings within these areas, but excluding private sidings

TfNSW Transport for New South Wales

5. Configuration Signalling infrastructure can be built of a variety of components. The key elements are

presented in this document to permit an appropriate signalling item to be constructed.

The symbols are drawn and placed on signalling documentation, including the CAD levels. The

CAD levels are specified in T MU MD 00006 ST Engineering Drawings and CAD Requirements.

Care shall be taken during the production of symbols to ensure that correct representation, line

widths and proportions are maintained. Signalling documentation is used for certification and

equipment profiles, and the details should be accurately portrayed. Symbols shall not be

mirrored or their configuration modified. Most symbols bare a relationship to installed

equipment.

Where there is a need for any symbols to be created or existing symbols to be modified,

permission shall be sought from the Lead Signals and Control Systems Engineer, ASA. © State of NSW through Transport for NSW Page 7 of 38

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T HR SC 00004 ST Signalling Design Requirements – Signalling Symbols

Version 1.0 Issued date: 11 March 2016

6. SymbolsCompliance with the requirements in this standard will not, by itself, be sufficient to ensure that

satisfactory outcomes will be produced. Personnel providing services based on the standard

need to bring appropriate expertise to the matters under consideration.

Application of the signalling symbols shall be in conjunction with the following documents:

• T HR SC 00001 ST Circuit Design Standard – Typical Circuits – developing signalling

circuit book design using typical circuits

• TMGG 1550 Signalling Documentation Guidelines – presenting signalling circuits and

equipment in signalling documentation

• SPG 0703 Signalling Documentation and Drawings – design presentation, content and

submission

• ESG 100 Signal Design Principles – fundamental requirements of signalling system and its

assets

Section 6.1 through to Section 6.5 provides standard signalling symbols used on a variety of

signalling documentation.

6.1. Signalling plan symbols Section 6.1.1 through to Section 6.1.12 provides standard signalling symbols associated with

signalling arrangements used on signalling plans.

© State of NSW through Transport for NSW Page 8 of 38

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T HR SC 00004 ST Signalling Design Requirements – Signalling Symbols

Version 1.0 Issued date: 11 March 2016

6.1.1. Colour light signals

Figure 1 shows the symbols that are used for colour light signals with double light indications.

Figure 1 – Colour light double head signal symbols

Figure 2 shows the symbols that are used for colour light signals with single light indications.

© State of NSW through Transport for NSW Page 9 of 38

Figure 2 – Colour light single head signal symbols

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T HR SC 00004 ST Signalling Design Requirements – Signalling Symbols

Version 1.0 Issued date: 11 March 2016

Figure 3 shows the symbols that are used for shunting signals.

Figure 3 – Shunting signal symbols

6.1.2. Point indicators

Figure 4 shows the symbols that are used for point indicators.

© State of NSW through Transport for NSW Page 10 of 38

Figure 4 – Point indicator symbols

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T HR SC 00004 ST Signalling Design Requirements – Signalling Symbols

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6.1.3. Repeater signals

Figure 5 shows the symbols that are used for repeater signals.

© State of NSW through Transport for NSW Page 11 of 38

Figure 5 – Repeater signal symbols

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T HR SC 00004 ST Signalling Design Requirements – Signalling Symbols

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6.1.4. Signal signage

Figure 6 shows the symbols that are used for signal signage.

© State of NSW through Transport for NSW Page 12 of 38

Figure 6 – Signal signage symbols

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T HR SC 00004 ST Signalling Design Requirements – Signalling Symbols

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6.1.5. Track and wayside structures

Figure 7 shows the symbols that are used for railway track lines and wayside infrastructure.

© State of NSW through Transport for NSW Page 13 of 38

Figure 7 – Track lines and wayside infrastructure symbols

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T HR SC 00004 ST Signalling Design Requirements – Signalling Symbols

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6.1.6. Level and pedestrian crossings

Figure 8 shows the symbols that are used for level crossings, pedestrian crossings and their

associated signals.

© State of NSW through Transport for NSW Page 14 of 38

Figure 8 – Level crossing arrangement symbols

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T HR SC 00004 ST Signalling Design Requirements – Signalling Symbols

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6.1.7. Apparatus housings

Figure 9 shows the symbols that are used for buildings and cabinets that contain signalling

equipment.

Figure 9 – Equipment building and cabinet symbols

6.1.8. Train detection Figure 10 and Figure 11 show the symbols that are used for track circuit feed and relays.

© State of NSW through Transport for NSW Page 15 of 38

Figure 10 – Track circuit symbols

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T HR SC 00004 ST Signalling Design Requirements – Signalling Symbols

Version 1.0 Issued date: 11 March 2016

RXTX

TRANSMITTER & RECEIVER JOINTLESS TRACK CIRCUIT

R+

DC TRACK CIRCUIT

RS+

SOLAR POWEREDDC TRACK CIRCUIT

FEED END(BATTERY)

© State of NSW through Transport for NSW Page 16 of 38

Figure 11 – Track circuit feed and relay symbols

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6.1.9. Track alignments and layouts

Figure 12 shows the symbols that are used for track configuration.

© State of NSW through Transport for NSW Page 17 of 38

Figure 12 – Track configuration symbols

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T HR SC 00004 ST Signalling Design Requirements – Signalling Symbols

Version 1.0 Issued date: 11 March 2016

6.1.10. Grade crossing predictors

Figure 13 and Figure 14 show the symbols that are used for grade crossing predictors.

156IS 5,9 KHz

BIDIRECTIONAL TRACK FREQUENCYISLAND FREQUENCY

285UNIDIRECTIONAL TRACK FREQUENCY(NO ISLAND)

1000285

MBS

MULTIBAND SHUNT WITH FREQUENCY& LENGTH COMPENSATION

WBSWIDE BAND SHUNT

285

NBSNARROW BAND SHUNT & FREQUENCY

DIRECT WIDE SHUNTDW

BLOCK JOINTS & SERIES WIDE BAND SHUNT

WBS

BLOCK JOINTS & SERIES NARROW BAND SHUNT & FREQUENCY

NBS

285

Figure 13 – Grade crossing predictor symbols

© State of NSW through Transport for NSW Page 18 of 38

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T HR SC 00004 ST Signalling Design Requirements – Signalling Symbols

Version 1.0 Issued date: 11 March 2016

Figure 14 – Grade crossing predictor – typical layout

6.1.11. Miscellaneous symbols Figure 15 and Figure 16 show miscellaneous symbols.

© State of NSW through Transport for NSW Page 19 of 38

Figure 15 – Miscellaneous symbols

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© State of NSW through Transport for NSW Page 20 of 38

Figure 16 – Miscellaneous symbols (continued)

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T HR SC 00004 ST Signalling Design Requirements – Signalling Symbols

Version 1.0 Issued date: 11 March 2016

6.1.12. ETCS symbols

Figure 17 shows the European train control system symbols.

© State of NSW through Transport for NSW Page 21 of 38

Figure 17 - ETCS (ATP) trackside symbols

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T HR SC 00004 ST Signalling Design Requirements – Signalling Symbols

Version 1.0 Issued date: 11 March 2016

6.2. Track insulation plan symbols Section 6.2.1 through to Section 6.2.3 provides standard signalling symbols associated with

track insulation and bonding that shall be used on track insulation plans.

6.2.1. Train detection Figure 18 and Figure 19 shows the symbols that are used for frequency track circuits.

JOINTLESS TRACK CIRCUITS(CSEE - 19M LOOP)

MU

TU

MU

TU

JOINTLESS TRACK CIRCUITS WITH SI UNIT(CSEE - 23M LOOP)

MU

TU

MU

TU SI

JOINTLESS TRACK CIRCUITS(TI21 - 20M LOOP)

MU

TU

MU

TU

COMBINED MATCHING AND TUNNING UNIT

TMU

TX/RX

TX/RX

TX/RX TX/RX TX/RX

TX/RX TX/RX

© State of NSW through Transport for NSW Page 22 of 38

Figure 18 – Frequency track circuit symbols

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T HR SC 00004 ST Signalling Design Requirements – Signalling Symbols

Version 1.0 Issued date: 11 March 2016

TRACTION BETWEEN J/S AND JOINTLESS TRACK CIRCUITS

XX/R MU/ETU

TRACTION BETWEEN DOUBLE RAIL J/S TRACK CIRCUITS

XX/R /R

DR DRDR

X – DENOTES IMPEDANCE BOND TYPE X – DENOTES IMPEDANCE BOND TYPE

TRACTION BETWEEN DOUBLE RAIL J/S TRACK CIRCUITS

(CIT 1400 CT1)

XXCIT

1400CTI

DR DR

X – DENOTES IMPEDANCE BOND TYPE

CIT1400CTI

TRACTION BETWEEN DOUBLE RAIL J/S TRACK CIRCUITS AND EBI 200 TI21 TRACK CIRCUITS

(INC LINE MATCHING UNIT)

XX

JS DR EBI 200 TI21

X – DENOTES IMPEDANCE BOND TYPE

ETU LMU/R

TRACTION BETWEEN DOUBLE RAIL J/S TRACK CIRCUITS AND EBI 200 TI21 TRACK CIRCUITS

XX

JS DR EBI 200 TI21

X – DENOTES IMPEDANCE BOND TYPE

ETU/R

TRACTION TIE-IN BONDING ARRANGEMENTS

X

X – DENOTES IMPEDANCE BOND TYPE

X

© State of NSW through Transport for NSW Page 23 of 38

Figure 19 – Frequency track circuit symbols

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6.2.2. Grade crossing predictors

Figure 20 shows the symbols that are used for grade crossing predictors.

TX/RX

NBS114

NARROW BAND SHUNT

WBS

WIDE BAND SHUNT

MBSFREQUENCY

LENGTH

MULTI - BAND SHUNT

GCP CONNECTIONS (ISLAND)(NB TX LEADS TO BE SHORT{TX & RX TO BE RUN SEPERATELY})

TX/RX

© State of NSW through Transport for NSW Page 24 of 38

Figure 20 – Grade crossing predictor symbols

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6.2.3. Bonding

Figure 21 and Figure 21 show the symbols that are used for bonding and track insulation.

OHW PORTAL AND SPARK GAP CONNECTION –

SEPARATED STRUCTURES

© State of NSW through Transport for NSW Page 25 of 38

Figure 21 – Bonding and track insulation symbols

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T HR SC 00004 ST Signalling Design Requirements – Signalling Symbols

Version 1.0 Issued date: 11 March 2016

SINGLE RAIL TRACK CIRCUIT

+ -ve

NON-ELECTRIFIED AREAS

+ -ve

+-ve

DOUBLE RAIL ELECTRIFIED

+ -ve

+-ve

Figure 22 – Track circuit polarity symbols

6.3. Circuit book symbols Section 6.3.1 through to Section 6.3.5 provides standard signalling symbols associated with

signalling circuits, interlocking wiring and telemetry and control systems that shall be used in

circuit books.

6.3.1. Relays and contacts/contactors Figure 23 through to Figure 29 show the symbols that are used for relays contacts/contactors.

© State of NSW through Transport for NSW Page 26 of 38

Figure 23 – Relay coil and timer symbols

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T HR SC 00004 ST Signalling Design Requirements – Signalling Symbols

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Figure 24 – Relay front contact symbols

Figure 25 – Relay back contact symbols

Figure 26 – Dependent and non-vital relay contact symbols

© State of NSW through Transport for NSW Page 27 of 38

Figure 27 – Miscellaneous contact symbols

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Figure 28 – QBCA1 relay contact symbols

© State of NSW through Transport for NSW Page 28 of 38

Figure 29 – Lower quadrant semaphore signal contact symbols

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6.3.2. Trainstops

Figure 30 shows the symbols that are used for physical contact type trainstops.

© State of NSW through Transport for NSW Page 29 of 38

Figure 30 – Trainstop arm and detection contactor symbols

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Figure 31 shows the symbols that are used for electric switch machine contacts.

Figure 31 – Electric switch machine contact symbols

6.3.3. Lever contacts

Figure 32 through to Figure 36 show the symbols that are used for lever contacts.

© State of NSW through Transport for NSW Page 30 of 38

Figure 32 – Rotary contact symbols

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Figure 33 – Rotary contact symbols

Figure 34 – Lever position symbol

© State of NSW through Transport for NSW Page 31 of 38

Figure 35 – Catch rod contact symbols

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T HR SC 00004 ST Signalling Design Requirements – Signalling Symbols

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Figure 36 – Lever lock contact symbol

6.3.4. Push button circuits Figure 37 and Figure 38 show the symbols that are used for push button circuits.

Figure 37 – Two position symbols

© State of NSW through Transport for NSW Page 32 of 38

Figure 38 – Route setting three position symbols

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T HR SC 00004 ST Signalling Design Requirements – Signalling Symbols

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6.3.5. Miscellaneous apparatus

Figure 39, Figure 40 and Figure 41 show symbols that are used for miscellaneous apparatus.

© State of NSW through Transport for NSW Page 33 of 38

Figure 39 – Miscellaneous apparatus symbols

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Figure 40 – Miscellaneous apparatus symbols (continued)

© State of NSW through Transport for NSW Page 34 of 38

Figure 41 – Wires – terminals and protection devices symbols

6.4. Compressed air systems Figure 42 and Figure 43 shows the symbols that are used for compressed air systems.

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T HR SC 00004 ST Signalling Design Requirements – Signalling Symbols

Version 1.0 Issued date: 11 March 2016

© State of NSW through Transport for NSW Page 35 of 38

Figure 42 – Compressed air system symbols

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© State of NSW through Transport for NSW Page 36 of 38

Figure 43 – Compressed air system symbols (continued)

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6.5. Legacy and obsolete symbols Section 6.5.1 and Section 6.5.2 shows the symbols that are not currently maintained for new

works; however, they can be referred to for retrofit installations, where appropriate.

6.5.1. Mechanical signals Figure 44 shows the symbols used for mechanical 'semaphore style' signals.

Figure 44 – Mechanical signals

6.5.2. Points contactors

Figure 45 through to Figure 47 show the symbols that are used for points contacts for signal

branch electrical detection.

Figure 45 – Signal branch electrical detection contact symbols

© State of NSW through Transport for NSW Page 37 of 38

Figure 46 – Switch and plunger contact symbols

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© State of NSW through Transport for NSW Page 38 of 38

Figure 47 – Signal branch – EP Points contact symbols