EDS KV SINGLE CORE XLPE CABLES

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THIS IS AN UNCONTROLLED DOCUMENT, THE READER MUST CONFIRM ITS VALIDITY BEFORE USE Document Number: EDS 02-0034 ENGINEERING DESIGN STANDARD EDS 02-0034 33KV SINGLE CORE XLPE CABLES Network(s): EPN,

1 THIS IS AN UNCONTROLLED DOCUMENT, THE READER MUST CONFIRM ITS VALIDITY BEFORE USE Document Number: EDS ENGINEERING DESIGN STANDARD EDS KV SINGLE CORE XLPE CABLES Network(s): EPN, LPN, SPN Summary: This standard details the technical and practical information required for the safe and effective use of the new range of 33kV Single Core XLPE Cable to be used by UK Power Networks. Owner: Paul Williams Approved By: Sotiris Georgiopoulos Approved Date: 11/04/2016 This document forms part of the Company s Integrated Business System and its requirements are mandatory throughout UK Power Networks. Departure from these requirements may only be taken with the written approval of the Director of Asset Management. If you have any queries about this document please contact the author or owner of the current issue. Applicable To UK Power Networks All UK Power Networks Asset Management Capital Programme Connections External G81 Website Contractors ICPs/IDNOs Meter Operators HSS&TT Network Operations UK Power Networks Services Other

2 Revision Record Version 4.0 Review Date 11/04/2021 Date 16/02/2016 Author Paul Williams Why has the document been updated - Document updated reflect the change to a design with aluminium conductors and aluminium wire screens and a change to supplier that have been technically approved to supply the new cable type. What has changed mm 2 and 1200mm 2 aluminium conductors introduced as replacement for existing 630mm 2 and 800mm 2 copper conductors. All Sections and appendices updated to show the new cable design and conductor sizes. Document transferred onto a new template and rules applied Version 3.0 Review Date 30/06/2015 Date 29/06/2012 Author Michael Sinclair Added Ratings and checked for suitability for publication as a G81 document Version 2.3 Review Date Date 22/08/2011 Author Don Fossett Reclassified from EI to EDS Version 2.2 Review Date Date 14/02/2011 Author Don Fossett Document rebranded Version 2.1 Review Date Date 06/08/2010 Author Paul Williams Review date extend to match duration of current Procurement Contract Version 2.0 Review Date Date 14/08/2007 Author Paul Williams EDF Energy SAP commodity codes amended Version 1.0 Review Date Date 27/04/2007 Author Paul Williams Original Issue UK Power Networks 2016 All rights reserved 2 of 16

3 Contents 1 Introduction Scope Details Standard Drum Details Current Rating Table for 33kV Single Core Cables Ratings Ratings Current Rating Tables for Comparison with Existing Designs Three core H Type PILC Cables Ratings Copper s Ratings Aluminium s Ratings Copper s Ratings Aluminium s Three core Fluid Filled Cables (Lead or Corrugated Aluminium Sheath) Ratings Copper s Ratings Aluminium s Ratings Copper s Ratings Aluminium s Existing Single Core XLPE Cables Aluminium and Copper s Ratings Ratings Technical Data Sheets Dependent Documents Appendix A Cable Ratings for Widely Used Installation Conditions A.1 Laid Direct Circuits Single Circuit A.2 Laid Direct Circuits Double Circuit (both circuits loaded at the same time) A.3 Ducted Circuits Single Circuit A.4 Ducted Circuits Double Circuit (both circuits loaded at the same time) UK Power Networks 2016 All rights reserved 3 of 16

4 1 Introduction The purpose of this engineering standard is to provide designers, installers and operators with the necessary technical and practical information required to enable the safe and efficient use of the new range of 33kV Single Core XLPE cables in UK Power Networks (UKPN). 2 Scope This document only covers the five main types of single core 33kV cable supplied by one of the following cable manufacturers: Cabelte (Portugal); Nexans (France, Greece, Norway and Turkey); NKT Cables (Denmark); Solidal (Portugal). The standard sizes are as follows: 300mm 2 aluminium conductor single core XLPE cable with a 82mm 2 aluminium wire screen and a MDPE outer sheath, with a conductive outer layer; 500mm 2 aluminium conductor single core XLPE cable with a 82mm 2 aluminium wire screen and a MDPE outer sheath, with a conductive outer layer; 630mm 2 aluminium conductor single core XLPE cable with a 82mm 2 aluminium wire screen and a MDPE outer sheath, with a conductive outer layer; 1000mm 2 aluminium conductor single core XLPE cable with a 82mm 2 aluminium wire screen and a MDPE outer sheath, with a conductive outer layer; 1200mm 2 aluminium conductor single core XLPE cable with a 82mm 2 aluminium wire screen and a MDPE outer sheath, with a conductive outer layer. Note: All the above are also available with a low smoke zero halogen sheath for installation in cable tunnels, basements, etc. 3 Details 3.1 Standard Drum Details The new range of 33kV cables will only be available from UK Power Networks Logistics Cable Management in the following full drum lengths: Size and Material Standard Drum Length (m) UK Power Networks Stores Code 300mm 2 aluminium T 500mm 2 aluminium D 630mm 2 aluminium N 1000mm 2 aluminium X 1200mm 2 aluminium H UK Power Networks 2016 All rights reserved 4 of 16

5 4 Current Rating Table for 33kV Single Core Cables This table provides a guide to the current ratings for 33kV single XLPE core cables. All the ratings quoted are Ratings for 1 single circuit installed in trefoil, solidly bonded only and are in accordance with Engineering Recommendation P17. The MVA ratings are for a three-phase supply. Details for multiple cable circuits are listed in Appendix A: 4.1 Ratings Area mm² 1200 Al Current Rating per Circuit 900mm depth of cover, g = 1.2 C m/watt, ground/air temp = 15 Laid Direct in Ground Installed in Ducts Installed in Free Air (shaded from solar radiation) Amps MVA Amps MVA Amps MVA Ratings Area mm² 1200 Al Current Rating per Circuit 900mm depth of cover, g = 1.2 C m/watt, ground/air temp = 10 Laid Direct in Ground Installed in Ducts Installed in Free Air (shaded from solar radiation) Amps MVA Amps MVA Amps MVA UK Power Networks 2016 All rights reserved 5 of 16

6 5 Current Rating Tables for Comparison with Existing Designs The tables in this section are designed to provide a guide between the current ratings of existing designs and the new 33kV single core cables. All the ratings quoted are Ratings and are in accordance with Engineering Recommendation P17. The MVA ratings are for a three-phase supply. values should generally be used for design purposes as they are the most onerous. 5.1 Three core H Type PILC Cables Ratings Copper s Area in² 0.10in in in in in in in 2 Current Rating per 900mm depth of cover, g = 1.2 C m/watt. Ground/air temp = 15 C Amps MVA S/C XLPE Amps MVA S/C XLPE Amps MVA S/C XLPE mm² 150mm² 240mm² * In free air shaded from solar radiation Ratings Aluminium s Area in² 0.20in in in in in 2 Current Rating per 900mm depth of cover, g = 1.2 C m/watt. Ground/air temp = 15 C Amps MVA S/C XLPE Amps MVA S/C XLPE Amps MVA S/C XLPE mm² 150mm² 240mm² * In free air shaded from solar radiation UK Power Networks 2016 All rights reserved 6 of 16

7 5.1.3 Ratings Copper s Area in² 0.10in in in in in in in 2 Current Rating per 900mm depth of cover, g = 1.2 C m/watt. Ground/air temp = 10 C Laid Direct in Ground Installed in Ducts Installed in Free air* Amps MVA S/C XLPE Amps MVA S/C XLPE Amps MVA S/C XLPE mm² 150mm² 240mm² * In free air shaded from solar radiation Ratings Aluminium s Area in² 0.20in in in in in 2 Current Rating per 900mm depth of cover, g = 1.2 C m/watt. Ground/air temp = 10 C Amps MVA S/C XLPE Amps MVA S/C XLPE Amps MVA S/C XLPE mm² 150mm² 240mm² * In free air shaded from solar radiation UK Power Networks 2016 All rights reserved 7 of 16

8 5.2 Three core Fluid Filled Cables (Lead or Corrugated Aluminium Sheath) Ratings Copper s Area in² 0.15in in in in in in in in in in 2 Current Rating per 900mm depth of cover, g = 1.2 C m/watt. Ground/air temp = 15 C Amps MVA S/C XLPE Amps MVA S/C XLPE Amps MVA S/C XLPE mm² 150mm² 240mm² 260mm² 350mm² 500mm² 630mm² * In free air shaded from solar radiation Ratings Aluminium s Area in² 0.20in in in in in in in in in 2 Current Rating per 900mm depth of cover, g = 1.2 C m/watt. Ground / air temp = 15 C Amps MVA S/C XLPE Amps MVA S/C XLPE Amps MVA S/C XLPE mm² 150mm² 240mm² 260mm² 350mm² 500mm² 630mm² * In free air shaded from solar radiation UK Power Networks 2016 All rights reserved 8 of 16

9 5.2.3 Ratings Copper s Area in² 0.15in in in in in in in in in in 2 Current Rating per 900mm depth of cover, g = 1.2 C m/watt. Ground/air temp = 10 C Amps MVA S/C XLPE Amps MVA S/C XLPE Amps MVA S/C XLPE mm² 150mm² 240mm² 260mm² 350mm² 500mm² 630mm² * In free air shaded from solar radiation Ratings Aluminium s Area in² 0.20in in in in in in in in in 2 Current Rating per 900mm depth of cover, g = 1.2 C m/watt. Ground/air temp = 15 C Amps MVA S/C XLPE Amps MVA S/C XLPE Amps MVA S/C XLPE mm² 150mm² 240mm² 260mm² 350mm² 500mm² 630mm² * In free air shaded from solar radiation UK Power Networks 2016 All rights reserved 9 of 16

10 5.3 Existing Single Core XLPE Cables Aluminium and Copper s Ratings Area Solid Al Current Rating per 600mm depth of cover, g = 0.9 C m/watt. Ground/air temp = 15 C Amps MVA S/C XLPE Amps MVA Triplex Amps MVA S/C XLPE Stranded Cu 500mm² 630mm² 800mm² Al Al Al *In free air shaded from solar radiation Ratings Area Solid Al Current Rating per 600mm depth of cover, g = 0.9 C m/watt. Ground / air temp = 10 C Amps MVA Triplex Amps MVA Triplex Amps MVA Triplex Stranded Cu 500mm² 630mm² 800mm² Al Al Al *In free air shaded from solar radiation UK Power Networks 2016 All rights reserved 10 of 16

11 5.5 Technical Data Sheets 1. Solid or stranded aluminium conductor 2. Semi-conducting screen 3. XLPE insulation 4. Bonded semi-conducting screen 5. 82mm² Aluminium wire screen 6. Water swellable tapes above and below aluminium wire screen 7. Black MDPE sheath with conductive outer layer Nominal cross-sectional area mm² Approximate diameter over conductor mm Nominal insulation thickness mm Nominal area of aluminium wire screen mm² Minimum average thickness of oversheath mm Approximate overall diameter of Single Core mm Approximate cable weight kg/m Minimum bending radius mm Maximum pulling tension on Single Core kn Nominal internal diameter of duct mm Maximum DC screen 20 C /km Approximate Capacitance (C) µf/km Maximum DC resistance 20 C /km Maximum AC resistance (R 90 C /km Inductance 90 C mh/km Reactance 90 C /km Zero Sequence Resistance /km Zero Sequence Reactance /km Positive Sequence Resistance /km Positive Sequence Reactance /km Short circuit ratings 1 Second short circuit rating of conductor (90 to 250 C) ka Second short circuit rating of copper wire screen (80 to 250 C) ka UK Power Networks 2016 All rights reserved 11 of 16

Technical Data Sheets Continued 1. Solid or stranded aluminium conductor 2. Semi-conducting screen 3. XLPE insulation 4. Bonded semi-conducting screen 5. 82mm² Aluminium wire screen 6.

12 Technical Data Sheets Continued 1. Solid or stranded aluminium conductor 2. Semi-conducting screen 3. XLPE insulation 4. Bonded semi-conducting screen 5. 82mm² Aluminium wire screen 6. Water swellable tapes above and below aluminium wire screen 7. Black MDPE sheath with conductive outer layer Nominal cross-sectional area mm² Approximate diameter over conductor mm Approximate thickness of conductor screen mm Nominal insulation thickness mm Approximate thickness of insulation screen mm Nominal area of aluminium wire screen mm² Minimum average thickness of oversheath mm Approximate overall diameter of Single Core mm Approximate cable weight kg/m Minimum bending radius mm Maximum pulling tension on Single Core kn Nominal internal diameter of duct mm Maximum DC screen 20 C /km Approximate Capacitance (C) µf/km Maximum DC resistance 20 C /km Maximum AC resistance (R 90 C /km Inductance 90 C mh/km Reactance 90 C /km Zero Sequence Resistance /km Zero Sequence Reactance /km Positive Sequence Resistance /km Positive Sequence Reactance /km Short circuit ratings 1 Second Short Circuit Rating of (90 to 250 C) ka Second Short Circuit Rating of Copper wire screen (80 to 250 C) ka Dependent Documents This document is referenced in the following documents, any of which may be affected by updates. EDS EDS EHV Design London 33kV Network Design and Customer Supplies UK Power Networks 2016 All rights reserved 12 of 16

13 Appendix A Cable Ratings for Widely Used Installation Conditions A.1 Laid Direct Circuits Single Circuit 900mm mmm A.1.1 Ratings Size and Material 300mm 2 Al mm 2 Al mm 2 Al mm 2 Al mm 2 Al A.1.2 Ratings Size and Material 300mm 2 Al mm 2 Al mm 2 Al mm 2 Al mm 2 Al UK Power Networks 2016 All rights reserved 13 of 16

14 A.2 Laid Direct Circuits Double Circuit (both circuits loaded at the same time) 900mm mmm 300mm A.2.1 Ratings Size and Material 300mm 2 Al mm 2 Al mm 2 Al mm 2 Al mm 2 Al A.2.2 Ratings Size and Material 300mm 2 Al mm 2 Al mm 2 Al mm 2 Al mm 2 Al UK Power Networks 2016 All rights reserved 14 of 16

15 A.3 Ducted Circuits Single Circuit 900mm mmm A.3.1 Ratings Size and Material 300mm 2 Al mm 2 Al mm 2 Al mm 2 Al mm 2 Al A.3.2 Ratings Size and Material 300mm 2 Al mm 2 Al mm 2 Al mm 2 Al mm 2 Al UK Power Networks 2016 All rights reserved 15 of 16

16 A.4 Ducted Circuits Double Circuit (both circuits loaded at the same time) 900mm mmm 300mm A.4.1 Ratings Size and Material 300mm 2 Al mm 2 Al mm 2 Al mm 2 Al mm 2 Al A.4.2 Ratings Size and Material 300mm 2 Al mm 2 Al mm 2 Al mm 2 Al mm 2 Al UK Power Networks 2016 All rights reserved 16 of 16

EDS KV TRIPLEX CABLE RATING

EDS KV TRIPLEX CABLE RATING Document Number: EDS 02-0027 Network(s): Summary: EPN, LPN, SPN ENGINEERING DESIGN STANDARD EDS 02-0027 11KV TRIPLEX CABLE RATING This engineering design standard provides the cable ratings and important