Removal of EP SP High Voltage Cable

Transcription

1 TN 018: 2014 Technical Note For queries regarding this document TN 018: 2014 Issued date 12 March 2014 Effective dates 12 March 2014 Subject: Removal of High Voltage Cable This technical note is issued by the Asset Standards Authority as a notification to removel from use the following RailCorp document: Reference Number Title Version Issue Date High Voltage Cable 3.1 August 2011 High Voltage Cable is a legacy RailCorp document and should be used for reference purposes only. T HR EL ST High Voltage AC and 1500 V DC Traction Power Supply Cable Requirements supersedes this document. Authorisation Technical content prepared by Checked and approved by Interdisciplinary coordination checked by Authorised for release Signature Name Wilfred Leung Neal Hook David Spiteri Graham Bradshaw Position Principal Engineer, Overhead Lines and Cables Lead Electrical Engineer Chief Engineer, Rail Principal Manager Network Standards & Services _3 Asset Standards Authority State of NSW through Transport for NSW Page 1 of 1

2 Engineering Standard Electrical Owner: Approved by: HIGH VOLTAGE CABLE Chief Engineer Electrical Neal Hook Chief Engineer Electrical Authorised by: Version 3.1 Issued August 2011 Neal Hook Chief Engineer Electrical Disclaimer This document was prepared for use on the RailCorp Network only. RailCorp makes no warranties, express or implied, that compliance with the contents of this document shall be sufficient to ensure safe systems or work or operation. It is the document user s sole responsibility to ensure that the copy of the document it is viewing is the current version of the document as in use by RailCorp. RailCorp accepts no liability whatsoever in relation to the use of this document by any party, and RailCorp excludes any liability which arises in any manner by the use of this document. Copyright The information in this document is protected by Copyright and no part of this document may be reproduced, altered, stored or transmitted by any person without the prior consent of RailCorp. Engineering Standard

3 Document control Version Date Summary of change 3.0 May 2010 Application of TMA 400 format 3.1 May 2011 Updated references. Section 4 added to explicitly stipulate compliance with AS :2006 and AS :2009. Specifications for 3.8/6.6kV cables added. Clarified metre marking requirements. Added requirement to consider eddy and circulating losses in rating considerations. Section 7 added to stipulate HV feeder configuration requirements. Clarified requirements for integrated optic fibres. Requirement for Qualification test report added as per AS :2006 and AS :2009 RailCorp Page 2 of 21

4 Contents 1 Introduction Scope and application References Australian and international standards RailCorp documents General Preferred cable sizes and applications Ratings Conditions used in determining current ratings Conditions used to determine the continuous current ratings shown in Tables 5, 6 and Derating Short time ratings Fault ratings Specific cables Configuration of high voltage feeders Manufacturing process Cables for use in tunnels or underground stations Integrated optic fibres for temperature monitoring Inspection & Testing Type tests Routine tests Sample tests Test certificates and Qualification test report Data set associated with the cable(s) Drawings and Information Test results Technical Schedule...17 Appendix A Technical Schedule (Information to be provided by Tenderers)...18 Details of optic fibres...19 Appendix B Cable drums and preparation for delivery...20 Appendix C Request for Tender - Check List...21 Information to be supplied to tenderers...21 Information to be supplied by tenderers...21 Information to be supplied by the successful tenderer...21 RailCorp Page 3 of 21

5 1 Introduction This document sets out: the requirements for high voltage cables to suit particular applications continuous ratings of common high voltage ac cables used by RailCorp the preferred cable sizes to be used in order to reduce and rationalise the number of different size cables in service. This document does not cover the requirements for 1500V dc cables and traction rectifier transformer secondary circuit cables. The requirements for these cables are covered in EP SP 1500V dc cables and cable ratings. However, specifications for 3.8/6.6kV cables used in the 1500V dc traction system are given in this document. Joints and terminations used with RailCorp high voltage cables shall be approved by the RailCorp Chief Engineer Electrical prior to installation. Refer to EP SP. Alterations and repair to high voltage cables should be in accordance with this document only so far as the extent of change. For more information about conducting safety risk management assessments when assessing requirements for high voltage cables to suit particular applications, see RailCorp Safety Management System Element 6: Risk Management. 2 Scope and application Cable manufacturers usually provide maximum continuous current rating data for cables direct buried, in buried ducts and in air (in shade) conditions. Derating factors are usually also provided to cater for situations where a number of circuits are installed in close proximity to one another and/or, where cables are installed at greater than normal depth and/or where cables are installed in soils exhibiting poor thermal resistivity. In addition RailCorp cables are often exposed to direct sun and installed in elevated steel troughing which directly affects the current rating of the cable. This document provides current rating data for the aforementioned conditions. The preferred cable construction configurations described in this document may not be suitable for all applications. Examples of site conditions or project requirements for which the preferred cable construction are not suitable include, but are not limited to: The cable is immersed in water for extensive time periods. Anti-termite protection The designer shall consider installation and site conditions in specifying the cable for each project. Use of non-preferred cable types shall be subject to approval by the RailCorp Chief Engineer Electrical on a case by case basis. 3 References 3.1 Australian and international standards The following documents contain provisions that, through reference in this text, provide further information and constitute provisions of this document. At the time of publication, the editions indicated below were valid. RailCorp Page 4 of 21

6 AS/NZS :2006 Electric cables Polymeric insulated Part 1: For working voltages 1.9/3.3 (3.6)kV up to and including 19/33 (36)kV AS/NZS :2009 Electric cables Polymeric insulated Part 2: For working voltages above 19/33 (36)kV up to and including 87/150 (170)kV AS/NZS :2006 Test methods for electric cables, cords and conductors Part 5.2 Fire test Measurement of smoke density of cables burning under defined conditions AS/NZS :1998 Test methods for electric cables, cords and conductors Part 5.4: Fire tests Determination of degree of acidity of gases evolved during the combustion of materials taken from electric cables by measuring ph and conductivity AS/NZS :2005 Test methods for electric cables, cords and conductors Part 5.6: Fire tests Test for vertical flame propagation for a single insulated wire or cable AS/NZS 4507:2006 Cables Classification of characteristics when exposed to fire AS/NZS 2893: 2002 Electric cables Lead & lead alloy sheaths Composition IEC Electric cables Calculation of current rating 3.2 RailCorp documents EP SP EP SP ESC General Requirements for cable polymeric terminations and joints 1500V dc cables and cable ratings Tunnels Except where otherwise specified in this document, high voltage cables shall comply with the requirements of AS/NZS :2006 or AS/NZS :2009, as applicable to voltage rating. 5 Preferred cable sizes and applications The preferred 6.6kV (used in RailCorp s 1500V dc traction system), 11kV, 33kV and 66kV cable types and sizes are listed Tables 1 to 4 respectively. RailCorp Page 5 of 21

7 VOLTAGE RATING 3.8/6.6kV (unscreened) 3.8/6.6kV (screened) AREA 2 mm INSULATION CABLE CONSTRUCTION See also Note 1: Flame Retardant Sheath 16 XLPE Conductor: Single core, stranded, circular, compacted copper Conductor screen: Semi-conductive XLPE Insulation: XLPE, natural colour, triple extrusion by CCV or VCV, dry cure. Oversheath: 5V-90 PVC sheath, embossed in 1 metre increments beginning with 0 at the hub of each cable drum. 25 XLPE Same as 3.8/6.6kV 16 mm 2 single core unscreened single core XLPE cable above. 95 XLPE Conductor: Single core, stranded, circular, compacted copper Conductor screen: Semi-conductive XLPE Insulation: XLPE, natural colour, extrusion by CCV or VCV, dry cure. Oversheath: Composite with 5V-90 PVC inner sheath, minimum thickness 2mm, coloured orange followed by HDPE outer sheath, minimum thickness 2mm, coloured black, embossed in 1 metre increments beginning with 0 at the hub of each cable drum. 240 XLPE Same as 3.8/6.6kV 95 mm 2 single core unscreened XLPE cable above. 400 XLPE Same as 3.8/6.6kV 95 mm 2 single core unscreened XLPE cable above. 400 EPR Conductor: Single core, 1159/0.67 mm multiple stranded, tinned annealed copper Conductor screen: Semi-conductive, crosslinked Insulation: XR-EPR-90 Oversheath: Heavy duty TPE, nominal thickness 3.9mm. 240 XLPE Conductor: Single core, stranded, circular, compacted copper Conductor screen: Semi-conductive XLPE Insulation: XLPE, natural colour, triple extrusion by CCV or VCV, dry cure Insulation screen: Semi-conductive XLPE, hand strippable without preconditioning Screen: Plain annealed copper wire, CSA 90mm² Oversheath: Composite with 5V-90 PVC inner sheath, minimum thickness 2mm, coloured orange followed by HDPE outer sheath, minimum thickness 2mm, coloured black, embossed in 1 metre increments beginning with 0 at the hub of each cable drum. 400 XLPE Same as 3.8/6.6kV 240 mm 2 single core screened XLPE cable above. APPLICATION See EP SP Table 1 - Preferred cable sizes, cable construction and application (6.6kV cables used in Railcorp s 1500V dc traction system) RailCorp Page 6 of 21

8 VOLTAGE RATING AREA 2 mm INSULATION CABLE CONSTRUCTION See also Note 1: Flame Retardant Sheath 6.35/11kV 35 XLPE Conductor: Single core, stranded, circular, compacted copper Conductor screen: Semi-conductive XLPE Insulation: XLPE, natural colour, triple extrusion by CCV or VCV, dry cure. Insulation screen: Semi-conductive XLPE, hand strippable without preconditioning Screen: Plain annealed copper wire CSA equal to core area Oversheath: Composite with 5V-90 PVC inner sheath, coloured orange followed by HDPE outer sheath, coloured black, embossed in 1 metre increments beginning with 0 at the hub of each cable drum. 95 XLPE Conductor: Three core, stranded, circular, compacted copper Conductor screen: Semi-conductive XLPE Insulation: XLPE, natural colour, triple extrusion by CCV or VCV, dry cure Insulation screen: Semi-conductive XLPE, hand strippable without preconditioning Screen: Individually screened with plain annealed copper wire, CSA 90mm² total Layed up with polypropylene fillers & taped Oversheath: Composite with 5V-90 PVC inner sheath, minimum thickness 2mm, coloured orange followed by HDPE outer sheath, minimum thickness 2mm, coloured black, embossed in 1 metre increments beginning with 0 at the hub of each cable drum. 150 XLPE Same as for 6.35/11kV 95 mm 2 three core XLPE cable above. APPLICATION Short cable runs between electrical equipment Feeder cable Feeder cable Table 2 - Preferred cable sizes, cable construction and application (11kV cables) RailCorp Page 7 of 21

9 VOLTAGE AREA INSULATION CABLE CONSTRUCTION 2 RATING mm See also Note 1: Flame Retardant Sheath & Note 2 Integrated Optic Fibres 19/33kV 120 XLPE Conductor: Single core, stranded, circular, compacted copper Conductor screen: Semi-conductive XLPE Insulation: XLPE, natural colour, triple extrusion by CCV or VCV, dry cure Insulation screen: Semi-conductive XLPE, hand strippable without preconditioning Screen: Plain annealed copper wire CSA 90mm² Oversheath: Composite with 5V-90 PVC inner sheath, minimum thickness 2mm, coloured orange followed by HDPE outer sheath, minimum thickness 2mm, coloured black, embossed in 1 metre increments beginning with 0 at the hub of each cable drum. 150 XLPE Conductor: Three core, stranded, circular, compacted copper Conductor screen: Semi-conductive XLPE Insulation: XLPE, natural colour, triple extrusion by CCV or VCV, dry cure Insulation screen: Semi-conductive XLPE, hand strippable without preconditioning Screen: Individually screened with plain annealed copper wire, CSA 90mm² total Layed up with polypropylene fillers & taped Oversheath: Composite with 5V-90 PVC inner sheath, minimum thickness 2mm, coloured orange followed by HDPE outer sheath, minimum thickness 2mm, coloured black, embossed in 1 metre increments beginning with 0 at the hub of each cable drum. APPLICATION 33kV AC switchgear to rectifier transformer (All sizes) 33kV cables for 33/11 transformers up to 7.5MVA Feeder cable 240 XLPE Same as 19/33kV 120 mm 2 single core XLPE Feeder cable cable above. 300 XLPE Same as 19/33kV 120 mm 2 single core XLPE Feeder cable cable above. Table 3 - Preferred cable sizes, cable construction and application (33kV cables) RailCorp Page 8 of 21

10 6 Ratings VOLTAGE AREA INSULATION CABLE CONSTRUCTION 2 RATING mm See also Note 1: Flame Retardant Sheath & Note 2 Integrated Optic Fibres 38/66kV 95 XLPE Conductor: Single core, stranded, circular, compacted copper Conductor screen: Non hygroscopic, semiconductive tape, followed by semi-conductive XLPE Insulation: XLPE, natural colour, triple extrusion by CCV or VCV (preferred), dry cure. Insulation screen: Semi-conductive XLPE, fully bonded to insulation i.e. not hand strippable Water blocking: Non-biodegradable, water swellable, semi-conductive tape, applied under the metallic moisture barrier. Metallic moisture barrier: Lead alloy E to AS Screen: Plain annealed copper wire suitable for fault rating of 13 ka for one second. Binder tapes: To be compatible with the material with which they are in contact. Oversheath: Composite with 5V-90 PVC inner sheath, minimum thickness 2mm, coloured orange followed by HDPE outer sheath, minimum thickness 2mm, coloured black, embossed in 1 metre increments beginning with 0 at the hub of each cable drum. 150 XLPE Same as 38/66kV 95 mm 2 single core XLPE cable above. APPLICATION 5 MVA Rectifier Transformer Cable Feeder Cable Table 4 - Preferred cable sizes, cable construction and application (66kV cables) Note 1: Cables for use in tunnels or underground stations shall have a non-metallic oversheath assembly including a flame retardant outermost sheath as specified in Section 9. Note 2: Where cable temperature monitoring is required cables shall in addition be provided with integrated optic fibres as specified in Section Conditions used in determining current ratings Conditions used to determine the continuous current ratings shown in Tables 5, 6 and 7 General: Max allowable Conductor Temperature: XLPE insulated cables 90 C Paper Insulated cables 70 C Buried Cables: Soil Temperature (Ambient) - 25 C Soil Thermal Resistivity C m/w Depth of Burial - 800mm Duct Diameter - 150mm No of cables in each duct - 1 RailCorp Page 9 of 21

11 Cables in Air: Derating Air Temperature (Ambient) - 40 C Solar Radiation W/m 2 Cable Emissivity Steel Trough Emissivity Trough Size - 150mm x 150mm; one circuit per trough The current ratings of cables are affected by a number of factors as discussed below. For simple installation configurations, it is acceptable to apply derating factors shown in Tables 8 to 11. For more complex installation configurations, the as installed current rating shall be determined in accordance with IEC using appropriate softwares that have been accepted by the RailCorp Chief Engineer Electrical. Cables in close proximity: Current ratings shown in Section 6.4 are subject to derating where a number of cable circuits are installed in close proximity to one another. With cables in ground, a derating factor must be applied when the spacing between circuits is less than 1.0m. Cables in unenclosed installations must be derated when the spacing is less than 3 times the cable diameter. Typical derating factors are given in Table 10 and Table 11. Cables installed at greater than normal depth: Current ratings shown in Section 6.4 are also subject to derating where cables are installed in ground (direct buried or ducted) at depths exceeding that shown above. This may have particular relevance to cables within ducts installed by directional boring. Typical derating factors for cables up to 33kV are given in Table 8 and Table 9. For guidance regarding derating factors applicable to 66kV cables the cable manufacturer should be consulted. Cables installed in soils of poor thermal resistivity: Some soils such as marshy ground, coarse sand and, reclaimed and rubbish ground generally exhibit poor thermal resistivity i.e. higher than the value shown above. In these situations it is now accepted practice to measure soil thermal resistivity prior to selecting cable size and either applying a derating factor or, preferably, employing installation techniques that will remedy the situation, eg bedding cables and backfilling trenches with material of low thermal resistivity such as 14:1 sand / cement mix. Note particularly - as heat is generated by current (I²R), not voltage, this situation is applicable to all cables, not just higher voltage cables. Eddy and circulating currents: The ratings given in Tables 5 to 7 are based on installations with cable screens solidly bonded to earth at both ends, and with eddy and circulating current losses ignored. The designer shall assess the effect of such lossess for actual conditions. In particular, careful consideration should be given to situations such as those listed below: Cables with a rated voltage of 66kV or above Long runs of cables (> 3.5km) Single core cables are not installed in a close configuration for significant portions of the route Alternative bonding configuration should be considered if the assessment has determined that the losses will result in unacceptable levels of derating. RailCorp Page 10 of 21

12 6.2 Short time ratings It is permissible that a cable be designed for short term loading in excess of the continuous rating provided that appropriate derating factors are applied. 6.3 Fault ratings The phase conductors and screen should be rated to carry the maximum earth fault current at the location for the longest clearing time of the back-up protection covering that fault. The phase conductors shall be rated to carry the maximum 3-phase fault current for the longest clearing time of the back-up protection covering that fault. 6.4 Specific cables Cables used on the RailCorp system shall have continuous current rating of at least that listed in Tables 5, 6 and 7 when operated under the conditions set out in Section 6.1. The existing RailCorp network contains various cable types and sizes that are not to be used for new installations. Information for these non-preferred cables are shown shaded in the tables, and is provided for reference purposes only. 3.8/6.6kV cables listed in Table 1 are used in RailCorp s 1500V dc traction system. Refer to EP SP for the ratings of these cables. Insulation Type Cores Area mm 2 No. Direct Buried Maximum Continuous Current Rating In Amps In Buried Ducts In Air in Shade In Air in Sun In Elevated Steel Troughing in Sun XLPE XLPE XLPE XLPE XLPE XLPE XLPE XLPE XLPE XLPE Paper / Lead Paper / Lead Paper / Lead Paper / Lead Paper / Lead Paper / Lead Paper / Lead Table 5-11kV cables Continuous current in Amps RailCorp Page 11 of 21

13 Insulation Type Cores Area 2 mm No. Maximum Continuous Current Rating In Amps Direct Buried In Buried Ducts In Air in Shade In Air in Sun In Elevated Steel Troughing in Sun XLPE XLPE XLPE XLPE XLPE XLPE XLPE XLPE XLPE XLPE XLPE XLPE XLPE XLPE HSL Paper / Lead HSL Paper / Lead Gas / Paper / Lead Gas / Paper / Aluminium in in in in. Paper / Lead Paper / Lead Paper / Lead Paper / Lead Paper / Lead Paper / Lead Paper / Lead Paper / Lead Paper / Lead Paper / Lead Paper / Lead Paper / Lead Table 6-33kV cables Continuous current ratings in Amps RailCorp Page 12 of 21

14 Number of circuits Cores Maximum Continuous Current Rating In Amps Insulation Area No. Direct In Buried In Air in In Air in In Elevated Type 2 mm Buried Ducts Shade Sun Steel Troughing in Sun XLPE XLPE Table 7-66kV cables Continuous current ratings in Amps Depth of burial (m) Derating factor Table 8 - Depth of burial variation Cables laid direct in ground (up to 33kV) derating factors Depth of burial (m) Derating factor (single core) Derating factor (three core) Table 9 - Depth of burial variation Cables laid in ducts (up to 33kV) derating factors Depth of Burial variation for 66kV cables: Consult cable manufacturer for derating factors. Spacing of circuits metre Spacing of circuits metre Spacing metre Trefoil Laid flat Table 10 - General derating factors for single core cables UNCONTROLLED WHEN PRINTED Page 13 of 21

15 Number of cables in group Number Spacing - metre of Ducts Spacing - metre in group Table 11 - General derating factors for three core cables 7 Configuration of high voltage feeders Where a high voltage feeder consists of a combination of aerial lines and cables, the configuration of the feeder shall satisfy the following provisions: Each aerial section, between cable terminations or between a cable termination and the aerial line termination at a substation, shall not be less than 500m or 4 spans. The length of cable between two aerial line sections shall not be less than 500m. A shorter length of cable between two aerial line sections may be accepted if the following issues are satisfactorily addressed in the design: Reliability of underground to overhead (UGOH) terminations Feeder fault finding Reclosure procedures Design and maintenance of earthing system Overvoltage issues associated with harmonics Management of buried assets 8 Manufacturing process The conductor screen, insulation and insulation screen shall be manufactured utilising a continuous triple extrusion line, either Continuous Catenary Vulcanisation (CCV) or Vertical Continuous Vulcanisation (VCV), and dry curing technique. For 66kV cables VCV is preferred. None of the three extruded insulation layers shall be repaired or jointed during manufacture without the specific approval of the RailCorp Chief Engineer Electrical. RailCorp Page 14 of 21

16 9 Cables for use in tunnels or underground stations Cables for use in tunnels or underground stations shall have a low smoke, low toxicity, halogen free non-metallic oversheath including a flame retardant outer sheath suitable for installation in damp situations. The flame retardant outer sheath shall comply with AS/NZS :2006, AS/NZS :1998 and AS/NZS :2005. The cable itself shall be to classification RHE in accordance with AS/NZS 4507:2006. Cable installation shall comply with the provisions of ESC 340. It is preferred that the flame retardant outer sheath be of a material that is cross linkable in the extrusion process thereby providing added protection against mechanical damage and water penetration. The oversheath assembly shall not contain PVC or other halogen producing materials. For single core cables, with or without a metal sheath, the oversheath assembly shall comprise an HDPE inner sheath followed by flame retardant outer sheath. For three core cables without metal sheath there shall in addition be provided a halogen free innermost sheath so as to comply with the provision of AS/NZS Section (d). 10 Integrated optic fibres for temperature monitoring Optic fibres are used where temperature monitoring of cable is required via the concept of distributed temperature sensing (DTS). Optic fibres integrated within the structure of a power cable are able to more accurately track cable temperature as opposed to optic fibres located in some form outside the cable. Integrated optic fibres represent a small incremental cost for sub-transmission cable (33kV and higher) and with on-going developments in associated detectors together with other optic fibre applications (sensing of pressures & other parameters as well as applications in communication, protection & general data transfer) it is appropriate to maximise opportunity by diversifying the type of fibre to be installed and maximising the number of fibres all within the context of practicality. Accordingly a minimum of 6 fibres comprising the following shall be specified: 2 x 50/125 multi mode fibres 2 x 62.5/125 multi mode fibres 2 x 10/125 single mode fibres The three fibre types shall be distinguishable by colour or other approved means. In single core cables optic fibres are generally located within a protective tube located between adjacent screen wires so as to provide some protection against crushing forces. In three core cables a similar arrangement of fibres & protective tube is generally laid up within the cable. Cables with a nominal voltage of 33kV and above shall be provided with integrated optic fibres for temperature monitoring for new installations with the following conditions: Where the cable connects to a traction substation and the length of cable is greater than 100m RailCorp Page 15 of 21

17 Where the cable is to be installed between two aerial sections of a high voltage feeder and the cable length is 500m or greater. Optic fibres for temperature sensing are not required for cables with a nominal voltage of 11kV and below. 11 Inspection & Testing The equipment shall comply in all respects with the requirements of this document. All tests shall be done by laboratories with NATA or equivalent accreditation Type tests Type tests shall be performed, or type test certificates provided, in accordance with AS/NZS :2006 or :2009 (as applicable to voltage rating) Routine tests Routine tests shall be performed in accordance with AS/NZS :2006 or :2009 (as applicable to voltage rating) Sample tests Sample tests shall be performed in accordance with AS/NZS :2006 or :2009 (as applicable to voltage rating) Test certificates and Qualification test report A Qualification test report and test certificates covering all type, sample and routine tests shall be provided by the supplier. The test report and certificates shall be supplied, in duplicate and electronically, and are to be in English. 12 Data set associated with the cable(s) The following data shall be supplied by the manufacturer and maintained for each type and conductor size of cable. This data will remain the property of RailCorp Drawings and Information The following drawings are required: A detailed drawing (to scale) showing the cross section of the cable and identifying the individual layers of the cable and including a detailed description of the layers with associated dimension adjacent. A cross section of the cable (to scale) showing the location of the optic fibres with special reference to the means of protection against crushing forces. A cross section of the optic fibre protective packaging showing location of the fibres within the packaging and describing all components 12.2 Test results The Qualification test report and test certificates shall be maintained for the life of the cable. RailCorp Page 16 of 21

18 12.3 Technical Schedule The information listed in the technical schedule of Appendix A, from the successful tenderer, shall be maintained for each cable type and conductor size. RailCorp Page 17 of 21

19 Appendix A Technical Schedule (Information to be provided by Tenderers) The information and guaranteed performance figures listed below shall be supplied with the tender for each type and size of cable. Manufacturer Manufacturing plant address Cable type Conductor material copper Conductor stranding (No/mm) Compacted or compressed Overall conductor diameter mm Cross sectional area 2 mm Insulation material Radial thickness of insulation (excluding semiconducting layers mm Details of conductor semi-conducting layer Details of insulation semi-conducting layer Details of line and curing method Details of longitudinal water blocking system (where specified) Details of metallic sheath (where specified) Details of screen Wires stranding No/mm Cross sectional area mm² Approximate coverage % Details of oversheath (materials and minimum thicknesses) including flame retardant sheath: Cable overall diameter mm Cable mass kg/100m Minimum bending radius adjacent to joints & terminations m Maximum allowable pulling tension via stockinette Newtons Cable BIL kv Maximum conductor operating temperature Normal C Emergency (2 hour) C Short circuit C Maximum DC resistance of conductor of completed cable at 20 C Ohms/km RailCorp Page 18 of 21

20 Positive sequence impedance of completed cable at 20 C resistive and reactive components: At 20 C Ohms/km At maximum operating temperature Ohms/km Zero sequence impedance of completed cable at 20 C with screen return, resistive and reactive components: At 20 C Ohms/km At maximum operating temperature Ohms/km Core to screen capacitance uf/km Maximum continuous current rating with screens solidly bonded both ends, ambient air temperature 40 C, depth of laying 0.8m, ambient soil temperature 25 C and soil thermal resistivity 1.2 C m/watt, (for single core cables: in trefoil, touching): Buried direct _ amps Buried in ducts _ amps In air, at ambient temperature of 40 C _ amps Two hour emergency current rating. Cables at normal maximum operating temperature at time of emergency: Buried direct _ amps Buried in ducts _ amps In air, at ambient temperature of 40 C _ amps Maximum short circuit rating for 1 second: Core _ amps Screen _ amps Cable losses at full load _ kw/km Details of optic fibres value Item 50/ /125 10/125 units multi mode multi mode single mode Core diameter micron Core ovality % Cladding diameter micron Core eccentricity % Attenuation at 850nm db/km Attenuation db/km Bandwidth at 850 nm MHz.km Bandwidth at 1300 nm MHz.km Numerical aperture Details of optic fibre assembly RailCorp Page 19 of 21

21 Appendix B Cable drums and preparation for delivery The cable shall be wound onto wooden or steel drums and prepared for deliver all in accordance with the requirements of AS/NZS :2006 or AS/NZS :2009, as appropriate. Wooden drums are preferred; however, steel drums may be necessary in the following situations: where additional mechanical protection is required for example, where cable is delivered from overseas inside a shipping container where cable will be stored in the open for extended periods for example, spare stock where cable will be paid out utilising a motorised cradle, or other device requiring smooth drum rims Cable drums shall have an overall diameter of not more than 2.8 metres and width of not more than 2.0 metres unless otherwise agreed. The drum shall have a round spindle hole of minimum 125 mm diameter. The cable shall be protected by wooden battens or approved equivalent. COREFLUTE is not acceptable. The order number, length of cable, weight, size and type of cable shall be painted on each drum. Total weight of cable drum plus cable shall not exceed 20 Tonnes (Currently Chullora Store has 20T and 10T cranes. Off loading facilities directly at work site need also to be considered). Drum ownership Ownership of cable drums shall be determined on a case by case basis for example, Drums shall become the property of the Purchaser where cable is destined to go into store as general stock for an indefinite period. Drums shall become the property of the Supplier (and shall be retrieved by the Supplier at its cost as and when determined by the Purchaser) where cable is destined for project work where cable will be installed in quick time. RailCorp Page 20 of 21

22 Appendix C Request for Tender - Check List Information to be supplied to tenderers For each type and conductor size of cable required the following information shall be provided to tenderers: Voltage rating Conductor size (mm²) Insulation Cable construction (see Section 5) Flame retardant oversheath requirement (see Section 9) Integrated optic fibres requirement (see Section 10) Total length requirement Preferred cable length per drum Delivery location Delivery date Details of cable drums, total weight limitations and (if it matters) whether wooden or steel drums (see Appendix B) A statement regarding cable drum ownership arrangement (see Appendix B) Requirement for a pulling eye, fitted to the conductor, on the cable end (if needed) A statement stipulating that type testing and routine testing will be at the suppliers cost and that the purchaser reserves the right to witness tests carried out A statement stipulating that the purchaser reserves the right to inspect the cables at any time during the manufacturing process Information to be supplied by tenderers For each type and conductor size of cable required the following information shall be provided by tenderers: Completed Technical Schedule (see Appendix A) Drawings (see Section 12.1) Type test certificates and Qualification test report If the cables are intended for manufacture in a plant not previously inspected by the Purchaser the tender price shall include travel & accommodation costs for a Purchaser representative to inspect the plant. Details of manufacturer s quality management system Proposed delivery schedule Information to be supplied by the successful tenderer Cable production plan A cable production plan shall be provided within two weeks of receipt of order. The plan to show milestones (dates & times commencing from receipt of order) of all intermediate processes (including manufacture and testing) through to cable delivery. Test Certificates Copies of certified test certificates and Qualification test reports covering type tests, routine tests and sample tests shall be provided prior to delivery of the cables. RailCorp Page 21 of 21