Specification for 11kV and 33kV Overhead Lines of Unearthed Construction on Single and H Type Wood Poles

Transcription

1 1. SCOPE Specification for 11kV and 33kV overhead power lines of unearthed construction employing AAAC conductors, supported on single and H type wood pole supports. 2. ISSUE RECORD This is a Reference document. The current version is held on the EN Document Library. It is your responsibility to ensure you work to the current version. Issue Date Issue No. Author Amendment Details May L Campbell Initial Issue Aug 2008 Amendment to issue 1 L Campbell March Ewan Gilliland 3. ISSUE AUTHORITY Drawing No. SP page 203 amended to include method for single stays attachment option Significant review to align with contemporary practices and editorial changes where necessary Author Owner Issue Authority Ewan Gilliland Senior Standards Engineer Frank Berry Circuits Manager Fraser Ainslie Head of Engineering Design and Standards 4. REVIEW This is a Reference document which has a 3 year retention period after which a reminder will be issued to review and extend retention or archive. 5. DISTRIBUTION This document is part of the Construction, SPD and SPM System Design Virtual Manuals maintained by Document Control but does not have a maintained distribution list. It is also published on the SP Energy Networks website. SP Power Systems Ltd Page 1 of 182 Design Manual (SPD, SPM)

2 6. CONTENTS 1. SCOPE ISSUE RECORD ISSUE AUTHORITY REVIEW DISTRIBUTION CONTENTS DEFINITIONS REFERENCES INTRODUCTION DESIGN DATA Design Basis Conductors Crossarms Supports Stays MATERIALS TECHNICAL REQUIREMENTS FOR THE ERECTION OF LINES Structure Type and Capabilities Wood Poles Section, Section Angle and Terminal Supports Supports Pole Strut Loadings Wind Span and Foundation Requirements Failure Containment Requirements Steelwork and Bolts Stays Line Conductors Line Jumpers and Down Dropper Jumpers Insulators and Conductor Fittings Span Lengths Section Lengths Conductor Design/Erection Sags and Tensions Conductor Spacing and Clearances Minimum Height of Line Conductors Summary of Statutory Ground Clearances Clearances to Obstacles Clearances to other Power Lines Railway and Canal Crossings Telecommunications Crossings Road / Motorway Crossings Safety Signs and Number Plates Anti-Climbing Devices Bonding and Earthing Neutral Earths kV Transformers Switchgear Air Break Switch Disconnectors (ABSD) HV Cable Terminations Surge Arresters SP Power Systems Ltd Page 2 of 182 Design Manual (SPD, SPM)

3 12.22 Insulated Shrouding APPENDICES SUMMARY APPENDIX 1 11KV NORMAL WEATHER AREA 50MM 2 AAAC HAZEL CONDUCTOR (L10) Design Parameters Table 1 Support Types and Duties Table for 50mm 2 Hazel AAAC Table 2 Conductor Design Table for 50mm² Hazel AAAC Table 3 Conductor Pre-Tension Table for 50mm 2 Hazel AAAC Table 4 Conductor Erection Table for 50mm 2 Hazel AAAC Table 5 Maximum Angle of Deviation for Single Poles for 50mm 2 Hazel AAAC Table 6 Maximum Angle of Deviation for H Poles for 50mm 2 Hazel AAAC Table 7 Strut Load in Single Poles with One or Two Stays (kgf) for 50mm 2 Hazel AAAC Table 8 Strut Load in H Poles with Two or Three Stays (kgf) for 50mm 2 Hazel AAAC Table 9 Strut Load in Single Pole Double Terminal Structures with Four Stays (kgf) for 50mm 2 Hazel AAAC Table 10 Strut Loading in Single Pole Construction Terminals (kgf) for 50mm 2 Hazel AAAC Table 11 Stayed Pole Strut Capabilities for 50mm 2 Hazel AAAC Table 12 Pole Sizing for Single Pole Intermediate and Section Poles for 50mm 2 Hazel AAAC APPENDIX 2 11KV SEVERE WEATHER AREA 100MM 2 AAAC OAK CONDUCTOR (L27) Design Parameters Table 1 Support Types and Duties Table for 100mm2 Oak AAAC (Severe Weather Area) Table 2 Conductor Design Table for 100mm² Oak AAAC (Severe Weather Area) Table 3 Conductor Pre-Tension Table for 100mm 2 Oak AAAC (Severe Weather Area) Table 4 Conductor Erection Table for 100mm 2 Oak AAAC (Severe Weather Area) Table 5 Maximum Angle of Deviation for Single Poles for 100mm 2 Oak AAAC (Severe Weather Area) Table 6 Maximum Angle of Deviation for H Poles for 100mm 2 Oak AAAC (Severe Weather Area) Table 7 Strut Load in Single Poles with One or Two Stays (kgf) for 100mm 2 Oak AAAC (Severe Weather Area) Table 8 Strut Load in H Poles with Three Stays (kgf) for 100mm 2 Oak AAAC (Severe Weather Area) Table 9 Strut Loading in Single Pole Construction Terminals (kgf) for 100mm 2 Oak AAAC (Severe Weather Area) Table 10 Stayed Pole Strut Capabilities for 100mm 2 Oak AAAC (Severe Weather Area) Table 11 Pole Sizing for Single Pole Intermediate and Section Poles for 100mm 2 Oak AAAC (Severe Weather Area) APPENDIX 3 33KV NORMAL WEATHER AREA 150MM 2 AAAC ASH CONDUCTOR (L27) Design Parameters Table 1 Support Types and Duties Table for 150mm 2 Ash AAAC (Normal Weather Area) Table 2 Conductor Design Table for 150mm² Ash AAAC (Normal Weather Area) Table 3 Conductor Pre-Tension Table for 150mm 2 Ash AAAC (Normal Weather Area) Table 4 Conductor Erection Table for 150mm 2 Ash AAAC (Normal Weather Area) Table 5 Maximum Angle of Deviation for Single Poles for 150mm 2 Ash AAAC (Normal Weather Area) Table 6 Maximum Angle of Deviation for H Poles for 150mm 2 Ash AAAC (Normal Weather Area) Table 7 Strut Load in Single Poles with One or Two Stays (kgf) for 150mm 2 Ash AAAC (Normal Weather Area) SP Power Systems Ltd Page 3 of 182 Design Manual (SPD, SPM)

4 16.9 Table 8 Strut Load in H Poles with Three Stays (kgf) for 150mm 2 Ash AAAC (Normal Weather Area) Table 9 Strut Load in H Pole Structures with Four Stays (kgf) for 150mm 2 Ash AAAC (Normal Weather Area) Table 10 Strut Loading in Single Pole Construction Terminals (kgf) for 150mm 2 Ash AAAC (Normal Weather Area) Table 11 Stayed Pole Strut Capabilities for 150mm 2 Ash AAAC (Normal Weather Area) Table 12 Pole Sizing for Single Pole Intermediate and Section Poles for 150mm 2 Ash AAAC (Normal Weather Area) APPENDIX 4 33KV NORMAL WEATHER AREA 200MM 2 AAAC POPLAR CONDUCTOR (L33) Design Parameters Table 1 Support Types and Duties Table for 200mm 2 Poplar AAAC (Normal Weather Area) Table 2 Conductor Design Table for 200mm² Poplar AAAC (Normal Weather Area) Table 3 Conductor Pre-Tension Table for 200mm 2 Poplar AAAC (Normal Weather Area) Table 4 Conductor Erection Table for 200mm 2 Poplar AAAC (Normal Weather Area) Table 5 Maximum Angle of Deviation for Single Poles for 200mm 2 Poplar AAAC (Normal Weather Area) Table 6 Maximum Angle of Deviation for H Poles for 200mm 2 Poplar AAAC (Normal Weather Area) Table 7 Strut Load in Single Poles with One or Two Stays (kgf) for 200mm 2 Poplar AAAC (Normal Weather Area) Table 8 Strut Load in H Poles with Three Stays (kgf) for 200mm 2 Poplar AAAC (Normal Weather Area) Table 9 Strut Load in H Poles with Four Stays (kgf) for 200mm 2 Poplar AAAC (Normal Weather Area) Table 10 Strut Loading in Single Pole Construction Terminals (kgf) for 200mm 2 Poplar AAAC (Normal Weather Area) Table 11 Stayed Pole Strut Capabilities for 200mm 2 Poplar AAAC (Normal Weather Area) Table 12 Pole Sizing for Intermediate and Section Poles for 200mm 2 Poplar AAAC (Normal Weather Area) APPENDIX 5 33KV SEVERE WEATHER AREA 200MM 2 AAAC POPLAR CONDUCTOR (L33) Design Parameters Table 1 Support Types and Duties Table for 200mm 2 Poplar AAAC (Severe Weather Area) Table 2 Conductor Design Table for 200mm² Poplar AAAC (Severe Weather Area) Table 3 Conductor Pre-Tension Table for 200mm 2 Poplar AAAC (Severe Weather Area) Table 4 Conductor Erection Table for 200mm 2 Poplar AAAC (Severe Weather Area) Table 5 Maximum Angle of Deviation for Single Poles for 200mm 2 Poplar AAAC (Severe Weather Area) Table 6 Maximum Angle of Deviation for H Poles for 200mm 2 Poplar AAAC (Severe Weather Area) Table 7 Strut Load in Single Poles with One or Two Stays (kgf) for 200mm 2 Poplar AAAC (Severe Weather Area) Table 8 Strut Load in H Poles with Three Stays (kgf) for 200mm 2 Poplar AAAC (Severe Weather Area) Table 9 Strut Load in H Poles with Four Stays (kgf) for 200mm 2 Poplar AAAC (Severe Weather Area) Table 10 Strut Loading in Single Pole Construction Terminals (kgf) for 200mm 2 Poplar AAAC (Severe Weather Area) Table 11 Stayed Pole Strut Capabilities for 200mm 2 Poplar AAAC (Severe Weather Area) SP Power Systems Ltd Page 4 of 182 Design Manual (SPD, SPM)

5 18.13 Table 12 Pole Sizing for Single Pole Intermediate and Section Poles for 200mm 2 Poplar AAAC (Severe Weather Area) APPENDIX 6 33KV SEVERE WEATHER AREA 300MM 2 AAAC UPAS CONDUCTOR (L35) Design Parameters Table 1 Support Types and Duties Table for 300mm 2 Upas AAAC (Severe Weather Area) Table 2 Conductor Design Table for 300mm² Upas AAAC (Severe Weather Area) Table 3 Conductor Pre-Tension Table for 300mm 2 Upas AAAC (Severe Weather Area) Table 4 Conductor Erection Table for 300mm 2 Upas AAAC (Severe Weather Area) Table 5 Maximum Angle of Deviation for Single Poles for 300mm 2 Upas AAAC (Severe Weather Area) Table 6 Maximum Angle of Deviation for H Poles for 300mm 2 Upas AAAC (Severe Weather Area) Table 7 Strut Load in Single Poles with One or Two Stays (kgf) for 300mm 2 Upas AAAC (Severe Weather Area) Table 8 Strut Load in H Poles with Three Stays (kgf) for 300mm 2 Upas AAAC (Severe Weather Area) Table 9 Strut Load in H Pole Structures with Four Stays (kgf) for 300mm 2 Upas AAAC (Severe Weather Area) Table 10 Strut Loading in Single Pole Construction Terminals (kgf) for 300mm 2 Upas AAAC (Severe Weather Area) Table 11 Stayed Pole Strut Capabilities for 300mm 2 Upas AAAC (Severe Weather Area) Table 12 Pole Sizing for Intermediate and Section Poles for 300mm 2 Upas AAAC (Severe Weather Area) APPENDIX 7 INSTALLATION REQUIREMENTS FOR CONDUCTORS INCORPORATING OPTICAL FIBRES Introduction General OPPC Crossarms, Supports and Stays Materials OPPC Vibration Damper Suspension Components Upas Equivalent OPPC Tension String Components Poplar Equivalent OPPC Tension String Components Optical Splice Enclosures Electrical Connections Earthing Optical Fibre Cable Connections General Arrangement OPPC Splice Enclosures APPENDIX 7A POPLAR EQUIVALENT OPTICAL CONDUCTOR (L34) mm 2 AAAC Poplar Equivalent OPPC Conductor (Normal Weather Area) Table 1 200mm 2 AAAC Poplar Equivalent OPPC Conductor (Normal Weather Area) Table 2 Conductor Design Table for 200mm² Poplar Equivalent OPPC AAAC (Normal Weather Area) Table 3 Conductor Pre-Tension Table for 200mm² Poplar Equivalent OPPC AAAC (Normal Weather Area) Table 4 Conductor Erection Table for 200mm² Poplar Equivalent OPPC AAAC (Normal Weather Area) mm 2 AAAC Poplar Equivalent Optical Conductor (Severe Weather Area) (L34) Table 1 200mm 2 AAAC Poplar Equivalent OPPC Conductor (Severe Weather Area) Table 2 Conductor Design Table for 200mm² Poplar Equivalent OPPC AAAC (Severe Weather Area) SP Power Systems Ltd Page 5 of 182 Design Manual (SPD, SPM)

6 Table 3 Conductor Pre-Tension Table for 200mm² Poplar Equivalent OPPC AAAC (Severe Weather Area) Table 4 Conductor Erection Table for 200mm² Poplar Equivalent OPPC AAAC (Severe Weather Area) APPENDIX 7B UPAS EQUIVALENT OPTICAL CONDUCTOR (SEVERE WEATHER AREA) (L36) Table 1 300mm 2 AAAC Upas Equivalent OPPC Conductor (Severe Weather Area) Table 2 Conductor Design Table for 300mm² Upas Equivalent OPPC AAAC (Severe Weather Area) Table 3 Conductor Pre-Tension Table for 300mm 2 Upas Equivalent OPPC AAAC (Severe Weather Area) Table 4 Conductor Erection Table for 300mm 2 Upas Equivalent OPPC AAAC (Severe Weather Area) APPENDIX 8 INSTALLATION REQUIREMENTS FOR HORSE OPGW General OPGW Supports and Stays Materials OPGW Vibration Damper Suspension Components Horse Equivalent Tension String Components Connection to Splice Enclosures Conductor Design/Erection Sags and Tensions Location of OPGW Attachment Points on Structures Straight Section, Intermediate and Pin Angle Structures Angle Section and Terminal Structures Bonding and Earthing of OPGW and Components APPENDIX 8A HORSE EQUIVALENT OPGW CONDUCTOR (80M BASIC SPAN) Table 1 70mm 2 AACSR Horse Equivalent OPGW Conductor (80m Basic Span) Table 2 Conductor Design Table for 70mm² Horse Equivalent OPGW AACSR (80m Basic Span) Table 3 Conductor Erection Table for 70mm² Horse Equivalent OPGW AACSR (80m Basic Span) APPENDIX 8B HORSE EQUIVALENT OPGW CONDUCTOR (100M BASIC SPAN) Table 1 70mm 2 AACSR Horse Equivalent OPGW Conductor (100m Basic Span) Table 2 Conductor Design Table for 70mm² Horse Equivalent OPGW AACSR (100m Basic Span) Table 3 Conductor Erection Table for 70mm² Horse Equivalent OPGW AACSR (100m Basic Span) APPENDIX 8C HORSE EQUIVALENT OPGW CONDUCTOR (120M BASIC SPAN) Table 1 70mm 2 AACSR Horse Equivalent OPGW Conductor (120m Basic Span) Table 2 Conductor Design Table for 70mm² Horse Equivalent OPGW AACSR (120m Basic Span) Table 3 Conductor Erection Table for 70mm² Horse Equivalent OPGW AACSR (120m Basic Span) DRAWINGS AND COMPONENT LISTINGS Figure 1 11kV Single Pole Member Drilling, Scarfing and Marking (Drawing Reference SP ) Figure 2 11kV H Pole Member Drilling, Scarfing and Marking (Drawing Reference SP ) Figure 3 33kV Light Construction Single Pole Member Drilling, Scarfing and Marking (Drawing Reference SP ) Figure 4 33kV Light Construction H Pole Member Drilling, Scarfing and Marking (Drawing Reference SP ) SP Power Systems Ltd Page 6 of 182 Design Manual (SPD, SPM)

7 27.5 Figure 5 33kV Heavy Construction Single Pole Member Drilling, Scarfing and Marking (Drawing Reference SP ) Figure 6 33kV Heavy Construction H Pole Member Drilling, Scarfing and Marking (Drawing Reference SP ) Figure 7 Delta H Pole Member Drilling, Scarfing and Marking (Drawing Reference SP ) Figure 8 Single Pole Intermediate or Pin Angle (Drawing Reference SP ) General Assembly Arrangement Single Pole Intermediate or Pin Angle (Drawing Reference SP ) Figure 9 Single Pole Intermediate or Pin Angle (Drawing Reference SP ) General Assembly Arrangement Single Pole Intermediate or Pin Angle (Drawing Reference SP ) Figure 10 H Pole Intermediate Long Span (Drawing Reference SP ) General Assembly Arrangement H Pole Intermediate Long Span (Drawing Reference SP ) Figure 11 Single Pole Straight Line or Angle Section (Drawing Reference SP ) General Assembly Arrangement Single Pole Straight Line or Angle Section (Drawing Reference SP ) Figure 12 Single Pole Straight Line or Angle Section (Drawing Reference SP ) General Assembly Arrangement Single Pole Straight Line or Angle Section (Drawing Reference SP ) Figure 13 H Pole Straight Line or Angle Section (Drawing Reference SP ) General Assembly Arrangement H Pole Straight Line or Angle Section (Drawing Reference SP ) Figure 14 Long Span H Pole Straight Line or Angle Section (Drawing Reference SP ) General Assembly Long Span H Pole Straight Line or Angle Section (Drawing Reference SP ) Figure 15 Delta H Pole Section or Section Angle (Drawing Reference SP ) General Assembly Delta H Pole Section or Section Angle (Drawing Reference SP ) Figure 16 Delta Long Span H Pole Section or Section Angle (Drawing Reference SP ) General Assembly Delta Long Span H Pole Section or Section Angle (Drawing Reference SP ) Figure 17 Single Pole Terminal (Drawing Reference SP ) General Assembly Single Pole Terminal (Drawing Reference SP ) Figure 18 H Pole Terminal (Drawing Reference SP ) General Assembly H Pole Terminal (Drawing Reference SP ) Figure 19 Single Pole Double Terminal (Drawing Reference SP ) General Assembly Single Pole Double Terminal (Drawing Reference SP ) Figure 20 General Arrangement Intermediate Crossarm (Drawing Reference SP ) Figure 21 General Arrangement Section Crossarm (Drawing Reference SP ) Figure 22 General Arrangement Terminal Crossarm (Drawing Reference SP ) Figure 23 General Arrangement Long Span Crossarm (Drawing Reference SP ) Figure 24 General Arrangement Crossarm Strut (Drawing Reference SP ) Figure 25 General Arrangement Long Crossarm Strut (Drawing Reference SP ) Figure 26 General Arrangement Long Span Delta Crossarm Strut (Drawing Reference SP ) Figure 27 General Arrangement Terminal Strap (Drawing Reference SP ) Figure 28 General Arrangement Section Strap (Drawing Reference SP ) Figure 29 General Arrangement Insulator Bracket (Drawing Reference SP ) Figure 30 General Arrangement Insulator Plate (Drawing Reference SP ) Figure 31 General Arrangement Foundation Brace Steelwork H Pole 1830mm Centres (Drawing Reference SP ) Figure 32 General Arrangement Foundation Brace Steelwork H Pole 2500mm Centres (Drawing Reference SP ) SP Power Systems Ltd Page 7 of 182 Design Manual (SPD, SPM)

8 27.33 Figure 33 General Arrangement Stay and Foundation Blocks (Drawing Reference SP ) Figure 34 General Arrangement Wood Brace Block Type 1 H Pole 1830mm Centres (Drawing Reference SP ) Figure 35 General Arrangement Wood Brace Block Type 2 H Pole 2500mm Centres (Drawing Reference SP ) Figure 36 General Arrangement H Pole Carryover Support Steelwork (Drawing Reference SP ) Figure 37 General Arrangement H Pole Cable Cleat / Coffin Support Steelwork (Drawing Reference SP ) Figure 38 General Arrangement H Pole Crucifix Support Steelwork (Drawing Reference SP ) Figure 39 General Arrangement Single Pole Fuse Steelwork (Drawing Reference SP ) Figure 40 General Arrangement Single Pole Fuse Outrigger Steelwork (Drawing Reference SP ) Figure 41 General Arrangement H Pole Fuse Steelwork (Drawing Reference SP ) Figure 42 General Arrangement Surge Arrester Support Steelwork (Drawing Reference SP ) Figure 43 General Arrangement Delta H Section Strap (Drawing Reference SP ) Figure 44 General Arrangement Terminal Bracing Strap (Drawing Reference SP ) Figure 45 General Arrangement Terminal Bracing Strap (Drawing Reference SP ) Figure 46 General Arrangement Long Section Strap for Long Span Delta H Pole (Drawing Reference SP ) Figure 47 General Arrangement Heavy Construction Stay Attachment Plates (Drawing Reference SP ) Figure 48 General Arrangement Heavy Construction Stay Attachment (Drawing Reference SP ) Figure 49 General Arrangement Transformer Platform Steelwork for a Single Pole (Drawing Reference SP ) Figure 50 General Assembly Transformer Platform Steelwork for a Single Pole (Drawing Reference SP ) Figure 51 General Arrangement Transformer Platform Steelwork for an H Pole (Drawing Reference SP ) Figure 52 General Assembly Transformer Platform Steelwork for an H Pole (Drawing Reference SP ) Figure 53 General Arrangement Single Pole Bog Shoe (Drawing Reference SP ) Figure 54 General Arrangement H Pole Bog Shoe (Drawing Reference SP ) Figure 55 General Arrangement Bog Shoe Strut (Drawing Reference SP ) Figure 56 General Arrangement 30 Angle Bracket (Drawing Reference SP ) Figure 57 General Arrangement Wind Stay Attachment (Drawing Reference SP ) 182 SP Power Systems Ltd Page 8 of 182 Design Manual (SPD, SPM)

9 7. DEFINITIONS For the purpose of this specification the following definitions apply: AAAC: ACSR: AACSR: Approved: Auxiliary Equipment: Average Span: Basic Span: Creep: Construction Terminal: Crossarm Assembly: Downpull: Engineer: Intermediate Support: Maximum Span: Maximum Working Tension (MWT): Normal Weather Environment: OPGW: OPPC: Over Tension: Recommended Span: All Aluminium Alloy Conductor. Aluminium Conductor Steel Reinforced. Aluminium Alloy Conductor Steel Reinforced. Equipment approved in accordance with SP Energy Networks Equipment Approvals Procedure (ASSET ), and which is considered suitable for installation on SP Energy Networks networks. Equipment other than that forming part of the line design which may be placed on supports such as transformers, fuse gear etc. The arithmetic average of a number of spans in a line or section of line. The span length adopted for sag/tension calculations. Permanent long term elongation of the conductor. A support at which the line may be terminated temporarily on one side of the crossarm only on tension insulator sets. A descriptive term used to include all pole top crossarm components and fixings. The vertical loading imposed by the conductors corresponding to a gradient measured between adjacent pole tops. SP Energy Networks nominated representative having authority over technical matters contained in this specification. A support in a straight run of line on which the conductors are supported on pin or post Insulators. The maximum permitted length of any span. The conductor tension assessed at -5.6ºC with wind and ice loading, which may be limited by vibration considerations. As defined in SP Energy Networks Construction Policy for Distribution Overhead Lines (OHL ). Optical Ground Wire. Optical Phase Conductor. Excess tension applied above normal tension at time of erection to compensate for conductor creep. The average span length in any section to which the line should be planned. SP Power Systems Ltd Page 9 of 182 Design Manual (SPD, SPM)

10 Sag: Section Angle Support: Section Support: Severe Weather Environment: Span: SP Energy Networks: SP Distribution plc (SPD): SP Manweb plc (SPM): SP Transmission plc (SPT): Uplift: Wind Span: The vertical distance, under any system of conductor loading, between the conductor and a straight line joining adjacent supporting points, measured at mid-span. A support at which a line deviates and the conductors are made off on either side of the crossarm on tension insulators. A support in a straight run of line on which the conductors are made off on either side of the crossarm on tension insulators. As defined in SP Energy Networks Construction Policy for Distribution Overhead Lines (OHL ). The horizontal distance between adjacent supports. Individual spans will normally be within 20% of the basic span. The brand name for the division of the ScottishPower group of companies that encompasses SP Distribution plc, SP Transmission plc, SP Manweb plc and SP Power Systems Ltd. The Distribution Licence Holder for the distribution service area formerly known as ScottishPower. The Distribution Licence Holder for the distribution service area formerly known as Manweb. The Transmission Licence Holder for the transmission service area formerly known as ScottishPower. When a line profile indicates a conductor attachment point is below the -5.6ºC curve when strung between two adjacent supports. Half the sum of the spans adjacent to the support. SP Power Systems Ltd Page 10 of 182 Design Manual (SPD, SPM)

11 8. REFERENCES When designing or constructing overhead lines in accordance with this specification it is essential that the appropriate persons be in possession of the latest versions of the following documents. Statutory Legislation ESQCR Electricity Safety, Quality and Continuity Regulations British Standards (BS) BS 183 BS EN ISO BS EN BS 1990 BS 3288 BS 4102 BS EN BS EN Specification for General Purpose Galvanised Steel Wire Strand Mechanical properties of fasteners made of carbon steel and alloy steel, Bolts, Screws and Studs Structural Timber. Wood Poles for Overhead Lines Wood poles for overhead power and telecommunication lines. Specification for softwood poles Insulator and conductor fittings for overhead power lines Steel Wire for General Fencing Purposes Non-ferrous metallic coatings on steel wire - Part 2: Zinc or zinc alloy coatings on steel wire Overhead Lines-Requirements and Tests for Fittings Energy Networks Association Technical Specifications (ENA TS) ENA TS 43-8 ENA TS ENA TS ENA TS ENA TS ENA TS ENA TS ENA TS ENA TS ENA TS ENA TS Overhead Line Clearances Insulator Binds and Equivalent Helical Fittings for Overhead Lines Specification for Single Circuit Overhead Lines on Wood Poles for use at High Voltage Up To and including 33kV Selection and treatment of wood poles and associated timber for overhead lines Anti-Climbing Devices and Safety Signs for HV Lines up to and including 400kV Stay strands and stay fittings for overhead lines Overhead Line Fittings Line Insulators Steelwork for overhead lines Fasteners and washers for wood pole overhead lines Designs and Use of Temporary Scaffold Guards Energy Networks Association Engineering Recommendations (ER) ER-PO5 Protection of Telecommunication Lines from High Voltage Power Lines SP Power Systems Ltd Page 11 of 182 Design Manual (SPD, SPM)

12 SP Energy Networks Documents ASSET ASSET OHL OHL OHL OHL OHL OHL OHL OHL OHL OHL OHL OHL OHL OHL OHL OHL OHL OHL OHL OHL Asset Inspection and Condition Assessment Policy Equipment Approvals Procedure SP Energy Networks Construction Policy for Distribution Overhead Lines Specification for Overhead Line Conductor Incorporating Optical Fibres Approved Equipment Register Overhead Lines Overhead Line Clearances Termination of 11kV Cables on Poles Termination of 33kV Cables on Poles Erection of Optical Phase Conductors (OPPC) Supplementary Guidance Stays for Wood Poles Installation of Transformers on Poles Installation of Jumpers on Poles Air-Break Switch Disconnector Installation Installation and Commissioning Instructions for Metal Enclosed Pole Mounted Load Break Switch Disconnector Installation of Pole Mounted Auto-Reclosers (PMARs) Vermin Control Shrouds Erection of Fuse Steelwork on a Single Pole Policy for Labelling of Wood Pole Overhead Line Apparatus in SP Manweb Policy for Labelling of Wood Pole Overhead Line Apparatus in SP Distribution Pole Top Bonding Overhead Line PTE Earths and LV Neutral Earths Earthing and Bonding Pole Mounted Equipment Scottish Power Limited Safety Rules (Electrical and Mechanical) 4 th Edition Iberdrola Networks Specifications INS Overhead Line Conductors SP Power Systems Ltd Page 12 of 182 Design Manual (SPD, SPM)

13 9. INTRODUCTION It is the continued SP Energy Networks aspiration that all overhead networks will be suitably storm resilient, lines constructed to this specification will fulfil those requirements providing reliable and economical network performance. This specification has been prepared to provide a design of high voltage overhead lines up to 33kV suitable for application within SP Energy Networks licensed areas. They incorporate features of previously proven specifications, particularly with regard to conductors, maximum working tensions, span lengths and factors of safety. All overhead lines erected after 31 st January 2003 are required to comply with ESQCR. Overhead lines designed and constructed in accordance with this specification are deemed to comply with ESQCR. Any new or proposed overhead line not complying with this specification shall, in each case, be subject to Approval by the Head of Engineering Design and Standards or their nominated representative. Approval will normally be sought during the planning stage for the construction of any new overhead line. SP Power Systems Ltd Page 13 of 182 Design Manual (SPD, SPM)

14 10. DESIGN DATA 10.1 Design Basis The design basis for this specification mirrors that in ENA TS 43-40, utilising an empirical approach Conductors The tension of any line conductor at a temperature of -5.6ºC and subjected to a design wind and ice loading appropriate to the environment in which the line will be situated, shall ensure that the conductor will have a minimum factor of safety of 2.5 over the rated breaking strength of the conductor. The basic span length is specific to the conductor and environment in which the line will be situated and will be specified in the relevant appendix Crossarms The minimum factor of safety on all crossarm assemblies and associated steelwork is 2.5 in a Normal Weather Environment and up to 3.5 in a Severe Weather Environment on the yield stress of the steel Supports The strength of supports is derived from formulae contained in BS EN The stresses created in intermediate supports are bending stresses due to windage on conductors. All in-line intermediate and section poles have a minimum factor of safety of 3.5 in all Weather Environments. The stresses created in stayed supports are crippling stresses due to stay tension, steelwork and vertical conductor loads acting at the pole top. All angle and terminal poles have a minimum factor of safety of 2.5 in a Normal Weather Environment and up to 3.5 in a Severe Weather Environment. Pole top horizontal loading has also to be maintained within specified limits to prevent pole top splitting. Poles shall be of a sufficient diameter to withstand the above-mentioned stresses. Therefore the minimum pole grade allowable in appendix 1 only shall be Medium, all other appendices require a minimum pole grade of stout to BS EN for the purpose of this specification. The pole top diameter may exceed the minimum pole top diameter quoted in BS EN This more onerous requirement should be taken into account when selecting poles. For Pinus Sylvestris, the average ultimate extreme fibre stress value used for all pole calculations is 53.3N/mm². The average modulus of elasticity fibre stress is 10054N/mm². In all cases, the appropriate pole strength has been calculated using a maximum taper of 11.25mm/m Stays The minimum factor of safety on stay assemblies is 2.5 in a Normal Weather Environment and up to 3.5 in a Severe Weather Environment based on the minimum failing load of the assembly. Installation depths shall be specified during the design stage. Further guidance is available in OHL SP Power Systems Ltd Page 14 of 182 Design Manual (SPD, SPM)

15 11. MATERIALS Except where otherwise specified all materials used in the construction of lines to this specification shall comply with current British Standards and ENA Technical Specifications as appropriate. Only Approved materials shall be used. SP Power Systems Ltd Page 15 of 182 Design Manual (SPD, SPM)

16 12. TECHNICAL REQUIREMENTS FOR THE ERECTION OF LINES 12.1 Structure Type and Capabilities Table 1 of appendices 1 to 6 contained within this specification provides details of the various structure types, limiting span length and angle of deviation detailed under gradient conditions as applicable, together with the appropriate SP Energy Networks Drawing Reference numbers. The maximum span lengths indicated take account of conductor clashing and steelwork strength limitations. Poles, which are subject to uplift at -5.6ºC, shall be sectioned Wood Poles Only poles specified in OHL shall be used. In all circumstances, wood poles shall comply with BS EN and ENA TS They shall be supplied drilled and scarfed. Pole blocks shall be fabricated to ENA TS Drawing Reference Type 2 and Drawing Reference Type 1 & 2 as required Section, Section Angle and Terminal Supports The gradient limitations quoted in Table 1 of appendices 1 to 6 are derived from the conductor vertical load, which can be accommodated by the crossarm and is expressed as a downpull gradient measured between adjacent pole tops. The gradient limitations quoted in Table 1 refer to downpull gradients on each side of the support and therefore it is acceptable to summate gradients. The gradients limitations quoted in Table 1 are therefore permitted on both sides of the supports. Terminal supports are designed to allow for the appropriate value on one side of the structure only. The uplift limits on section, section angle and terminal structures shall be taken as being the same as for downpull detailed in Table 1 of the relevant appendices. SP Power Systems Ltd Page 16 of 182 Design Manual (SPD, SPM)

17 Supports For section and intermediate structures the maximum downpull shall be no greater than an equivalent gradient of 1:10 to the horizontal plane on either side of the structure. β 191º 1:10* 1:10* For hillside applications, the maximum gradient quoted in Table 1 of appendices 1 to 6 for intermediate supports is limited by the method of conductor attachment and is permitted only where angle α 166º and where angle β 191º. Where these limitations cannot be satisfied a section structure should be employed. β 191º 1:4 α 166º For terminal structures the maximum downpull shall be equivalent to a gradient of 1:5 to the horizontal plane on one side of the structure only. It may be impractical to strictly adhere to these uplift and downpull constraints which can result in abnormally high structures being designed. This can introduce other risks that would be preferable to avoid. Designs that do not comply with the requirements set out above shall be subject to approval by SP Energy Networks Lead Engineer for Circuits Development and/or the Head of Engineering Design and Standards or their nominated representative. Approval shall, where practical, be granted during the planning stage of the overhead line design. SP Power Systems Ltd Page 17 of 182 Design Manual (SPD, SPM)

18 12.3 Pole Strut Loadings The strut loading imposed on poles due to vertical components of stay and conductor tensions including any auxiliary equipment at specified angles of line deviation and ground slope conditions are specified in the relevant tables of appendices 1 to 6. For all single pole 11kV structures an allowance of 600kg has been included for the attachment of auxiliary equipment. During construction, section poles may be utilised as temporary terminals. Where a single pole section structure is required for this situation, the pole must be graded such that it is capable of a terminal load condition as detailed in pole strut loading tables of the relevant appendices. Temporary terminal stays will be fitted in accordance with Approved staying methods and placed at the ends of the crossarm and the stay anchors positioned no closer to the pole than two pole lengths. This may require to be increased significantly where conductors in excess of 100mm 2 are employed to limit the loading applied to the pole and crossarm assembly Wind Span and Foundation Requirements Pole foundations shall be designed to withstand the overturning moment due to windage on conductors, poles and insulators. Foundation design shall also take account of the rupturing capacity of the ground. In excavating foundation holes, the minimum amount of soil shall be disturbed in order to take advantage of the load bearing value of the virgin ground as far as possible. Backfilled soil shall be compacted using hand or mechanical compaction methods, not more than 150mm of loose soil shall be returned between each ramming operation. All structures shall have a minimum of one foundation block fitted at a minimum of 500mm below ground level. Where an angle of deviation exists, the top foundation block shall be on the inside of the angle. Where the quality of backfill material is unsuitable it will be necessary to replace the excavated material with a suitable imported backfill, however an Approved soil additive, e.g. Permasoil, may be used to improve the quality of poor soil. The Engineer (i.e SP Energy Networks appointed design engineer or delivery engineer) shall inspect holes and, where deemed necessary, additional kicking blocks or bog shoes as detailed in SP Energy Networks Drawing Reference SP (Single Pole Bog Shoe) or SP (H Pole Bog Shoe) shall be installed. In addition, it may be necessary to install wind stays in accordance with SP Energy Networks Drawing Reference SP to exposed sections of line. All foundations shall have a minimum factor of safety of 2.5 in a Normal Weather Environment and up to 3.5 in a Severe Weather Environment. The values for wind span capabilities for unstayed intermediate and section structures quoted in the appendices have been calculated using a soil bearing capacity of 314 (kn/m²). The appendices also detail the planting depths appropriate to the various pole lengths. SP Power Systems Ltd Page 18 of 182 Design Manual (SPD, SPM)

19 12.5 Failure Containment Requirements All lines shall include supports, designed to contain a cascade failure, separated by not more than 1000m. Supports, which are considered adequate to provide failure containment, are: (i) Any Section Structure (minimum grade stout as defined in ENA TS 43-88). (ii) Any Straight Line H Pole Section Structure. (iii) Any Section Angle Structure, which requires to be fitted with twin-splayed stays, with a stay slope of 45. (iv) Any H Pole Section Angle Structure in excess of 30 fitted with splayed stays with a stay slope of 45. (v) Any H Pole Section Angle Structure fitted with twin splayed stays with a stay slope of 45º employed on both sides of the Structure in the plane of the line. (vi) A Terminal Structure. Conductor Acceptable Failure Containment Options (i) (ii) (iii) (iv) (v) (vi) Hazel Oak - Ash - Poplar - - Upas Note: The following table indicates the minimum requirements to satisfy option (iii) for the various conductor types. Conductor Type Angle of deviation on a Single Pole Hazel >45º Oak >40º Ash >29º Poplar >15º 12.6 Steelwork and Bolts The steelwork for the structure types included in this specification shall, where practical, conform to the requirements of ENA TS All intermediate, section, section angle and terminal supports shall have anti-split bolts fitted above and below the crossarm steelwork. Bolts shall generally conform to ENA TS and BS EN ISO Terminal Bracing Straps SP Energy Networks Drawing Reference SP for L33 construction and Drawing Reference SP for L35 or L36 construction shall be substituted for item 9 in the H Pole Terminal Structure general assembly Drawing Reference SP M20 High Yield Steel Pole Bolts (Stamped 8.8) are required for all structures for all applications. SP Power Systems Ltd Page 19 of 182 Design Manual (SPD, SPM)

20 12.7 Stays Stays shall be Approved and comply with ENA TS Design calculations have been based on galvanised steel stranding of 7/4.00mm, Grade 1150 to BS 183. Stay wires shall, unless specifically designed otherwise, be made off with helical fittings at the pole top, insulator positions and on the stay rods. Where conductors in excess of 200mm 2 are employed, Stay attachment at pole tops shall be as shown in SP Energy Networks Drawing Reference SP Thimbles used for making off stay wire to stay rods shall conform to ENA TS Drawing Reference Type 1 for 7/4.00mm stays. Stay blocks shall be cut from sawn timber to produce rectangular sections and shall conform to ENA TS for 7/4.00mm stays. Stay rods shall be adjustable and in accordance with ENA TS Drawing Reference Type 2 for 7/4.00mm stays. The relevant tables of the appendices detail the maximum angles of deviation allowable for the varying stay slopes relative to a number of stays. Terminal supports shall be stayed in accordance with the requirements for a 60º angle of deviation. Where two stays are required, they can be installed either splayed or in tandem. When splayed, they shall be a minimum of 3m apart at ground level. When in tandem, the stay blocks shall be in separate holes with at least 3m undisturbed ground between them. Tandem stays are not permitted when the structure is designated as a failure containment structure as defined in Section All stays are to be installed such that the stay wire is left tight under normal working conditions, with the stay load equally proportioned between the stays where multiple stays are employed. Stay insulators shall be as detailed with ENA TS Drawing Reference Type 1 for use at 11kV and for 33kV, two Type 2 insulators in an insulator link assembly Drawing Reference shall be used. Insulators shall be inserted in every stay wire in such a position that, with the stay hanging down in a vertical position, the insulator shall be below the lowest bare conductor but in no circumstance less than 3m above ground. On multiple stayed poles, insulators shall be staggered to avoid clashing. The method of installation of stays is detailed in OHL Rock stays and their method of installation will be of an Approved type. The method of installation is detailed in OHL Power installed screw anchors may only be used with the agreement of the Engineer. The method of installation is detailed in OHL SP Power Systems Ltd Page 20 of 182 Design Manual (SPD, SPM)

21 12.8 Line Conductors The line conductors shall conform to Specification for Overhead Line Conductor INS or OHL as applicable. The use of PVC covered conductor for line conductor applications is not recommended and shall be subject to approval by SP Energy Networks Lead Engineer for Circuits Development and/or the Head of Engineering Design and Standards or their nominated representative Line Jumpers and Down Dropper Jumpers The minimum length of HV jumpers shall be 1.2m and the maximum length of unsupported HV jumpers shall be 2.0m. Jumpers in excess of 2.0m in length shall be bare conductor and supported by pilot pin insulators. All 33kV down dropper jumpers shall be bare conductor compressed directly onto a dead-end or the overhead line conductor with the appropriate fitting. 11kV down dropper jumpers shall be manufactured from the appropriate multi-stranded flexible conductor or from bare conductor to suit the overhead line conductor and the maximum anticipated load of the line. 11kV jumpers of between 1.2m and 2.0m connected to transformers, pole terminations, auto-reclosers, air break switch disconnectors (ABSD) and metal enclosed switches shall be multi-stranded flexible conductor. Note: the maximum length of 65mm² flexible copper jumpers shall be 1.5m. Multi-strand flexible down dropper jumpers shall be fixed onto a live line bail using the appropriate components. Bare down dropper conductors shall be compressed directly onto a dead-end or the overhead line conductor with the appropriate fitting. Where flexible jumpers are to be installed on lines with ACSR or AAAC conductor up to and including 100mm², either shear-off bolt bails or compression bails shall be fitted to the line for the connection of down dropper jumpers. Where flexible jumpers are to be installed on lines with 150mm² ACSR Dingo or 150mm² AAAC Ash conductors, only shear-off bolt bails shall be installed. Note: where copper flexible jumpers are connected to aluminium overhead lines, only shear-off bolt bails shall be installed. Down droppers for pole mounted transformers shall be 50mm² flexible aluminium jumpers or 35mm² flexible copper jumpers. The method of installation of down dropper jumpers is detailed in OHL SP Power Systems Ltd Page 21 of 182 Design Manual (SPD, SPM)

22 12.9 Insulators and Conductor Fittings Only Approved polymeric tension insulator sets shall be used at section and terminal positions, these shall comply with ENA TS Where the conductor s cross sectional area is in excess of 200mm 2 the tension string crossarm attachment components shall comprise of a BS 3288 Shackle Ref 28/29 and a BS 3288 Ball End Link Ref 28/30. These components shall be substituted for item 15 of the structure general assembly drawings. All components in the tension string including the tension insulator shall be rated at a minimum value of 125kN. Where required Sag Adjuster Plates BS 3288 Ref 28/100 and an additional BS 3288 Shackle Ref 28/29 may be installed as shown in appendix 7 in SP Energy Networks Drawing Reference SP Non-tension insulators shall comply with ENA TS 43-93, Drawing Reference for 11kV and Drawing Reference for 33kV. Where the conductor cross sectional area is in excess of 200mm 2 only Approved polymeric post type insulators complying with ENA TS with a separate armour grip suspension clamp top complying with BS EN shall provide support at intermediate structures. These may also be employed as support insulators at terminal and section structures. These post insulators shall be substituted for items 11 & 12 of the structure general assembly drawings. At earthed poles Approved polymeric insulators shall be used for all line insulation applications. All Insulator and conductor fittings shall comply with BS Arcing horns shall not be fitted to tension insulator sets. Approved tension dead-ends can be either of the compression or helical type depending on the conductor type. These shall meet the requirements of ENA TS Full tension mid-span joints shall only be used in exceptional circumstances and any such joint shall be located at least 1 metre from any conductor dead-end, or conductor fitting. Non-tension joints shall be of the compression type meeting the requirements of ENA TS Span Lengths The basic span length adopted by this specification is dependent on the chosen conductor and the environment in which the line will be situated and as such is specified in the appropriate conductor appendices. Individual spans will normally be within ± 20% of the chosen basic span. The average span length of every kilometre of line (not necessarily between section supports) shall not be greater than the basic span. In extreme circumstances an occasional maximum span shall be permitted. In such cases the maximum span length for individual structures is given in Table 1 of appendices 1 to 6. No more than two adjacent maximum spans shall be permitted as detailed in Table 1 of appendices 1 to 6. Where Long Span H Pole Structures are employed, in line stays shall be installed against the long spans to reduce the effect of out of balance tensions on the adjacent spans. SP Power Systems Ltd Page 22 of 182 Design Manual (SPD, SPM)

23 12.11 Section Lengths Section lengths, defined as the length between two section supports, shall not exceed 1000m Conductor Design/Erection Sags and Tensions Ordinates for plotting uplift curves are based on conductor design tensions. Ordinates for plotting ground clearance curves assume the use of new conductor and include an allowance for long-term creep over a period of 25 years. Conductor design sags / tensions are given in Table 2 of appendices 1 to 6. Erection sags and tensions are given in Table 4 of appendices 1 to 6 and are based on the conductor design tensions and have been subject to a 10% over tension to accommodate the short-term creep of the conductor during the life of the line. The conductors shall be pre-tensioned for a minimum time of 60 minutes. At 15-minute intervals during this period, the tension or sag shall be adjusted in order to maintain the correct value. Conductor pre-tension sags / tensions are given in Table 3 of appendices 1 to 6. The erection sags given in Table 4 of appendices 1 to 6 have been calculated from the conductor design tensions Conductor Spacing and Clearances The mid span conductor phase spacing generally limits the maximum span lengths detailed in Table 1 of appendices 1 to 6. The following values have been used to establish the values in Table 1. The standard conductor spacing is 1.2m on intermediate and terminal supports. The conductor spacing for section angle supports 60º is 1.21m. The conductor spacing for section angle supports 60º 75º is 1.11m. The conductor spacing for long span H section angle supports 30º is 1.93m. The likely maximum conductor temperature for the purpose of assessing clearances is specific to the chosen conductor and is specified in the relevant appendices. The minimum electrical clearance between any energised unsupported conductor and an insulator support, steelwork, stay wire (earthed or unearthed) or stay-bonding device shall not be less than 300mm as per rule A2.3 of the Scottish Power Limited Safety Rules (Electrical and Mechanical) 4 th Edition. The minimum electrical clearance between energised unsupported conductors shall be as per OHL or ENA TS Minimum Height of Line Conductors The height above ground of any line conductor, or any wire or cable attached to a pole carrying any line conductor, shall not, at its likely maximum temperature, be less than the value specified in OHL at any point. In order to calculate the height above ground of a line conductor, the appropriate sag for the span length and maximum operating temperature must first be selected from Table 2 of the appropriate appendix. SP Power Systems Ltd Page 23 of 182 Design Manual (SPD, SPM)

24 Summary of Statutory Ground Clearances Minimum ground clearances shall be in accordance with OHL To ensure compliance with the above statutory clearances, an additional 450mm shall be added to the profile ground clearance (at maximum still air sag condition) to allow for minor variations in ground level due to farming activities Clearances to Obstacles With the line conductors at the likely maximum temperature in still air or deflected at any angle up to 45º from the vertical, the minimum clearances detailed in OHL shall be achieved Clearances to other Power Lines Where power lines cross over or are in proximity to one another, the voltage of the power line with the higher system voltage as detailed in OHL shall determine clearances Railway and Canal Crossings When an overhead line is erected along, or across, a railway, canal or navigable river it shall comply with such arrangements as may be prescribed, or as may be agreed with the authorities concerned to meet local or special conditions as detailed in OHL Telecommunications Crossings Where an overhead line to this specification crosses or is in proximity to a telecommunications line, precautions shall be taken to prevent contact between the two lines as detailed in OHL with further guidance available in ENA ER-PO Road / Motorway Crossings Where a line to this specification crosses a motorway or other designated 6.1m high load route road, the minimum height of the conductors at the likely maximum conductor temperature must be at least 6.9m above the carriageway surface as detailed in OHL Where it is necessary to employ a sky cradle during erection or maintenance works, a clearance of 8.2m must be provided between the line conductor and carriageway surface. Where a sky cradle cannot be used, scaffolding should be employed over a motorway. In such instance, a clearance of 14m should be ensured between the line conductor and the surface of a normal 3-lane motorway. Details of the design and use of temporary scaffold guards can be found in ENA TS Safety Signs and Number Plates Safety signs shall be fitted to all supports in accordance with ASSET All poles shall be labelled in accordance with OHL or OHL SP Power Systems Ltd Page 24 of 182 Design Manual (SPD, SPM)

25 12.15 Anti-Climbing Devices Anti-climbing devices in accordance with ENA TS shall be fitted to supports in accordance with ASSET Anti-climbing devices shall be fitted to all stays. Outrigger brackets shall conform to ENA TS Drawing Reference The minimum quality of barbed wire shall be to BS 4102 Section 4 (galvanised steel) with barbs of 85mm spacing. Similar wire but with the spacing of the barbs set at 50mm is commonly used and is also acceptable. In areas where there is the possibility of severe corrosion, stainless steel barbed wire is recommended. Wire staples shall be of sufficient size to firmly hold the wire in place and be galvanised to BS EN Bonding and Earthing Steelwork on poles shall NOT be earthed except where transformers, ground-operated switchgear, cable terminations or surge arresters are to be fitted. At such positions all steelwork and other supporting metalwork mounted on the pole above the anti-climbing device shall be bonded and earthed in accordance with the requirements specified hereunder. Where the pole is not earthed, all steelwork above the anti-climbing device shall be bonded together. Steelwork below the anti-climbing device shall not be bonded or earthed unless ground operated switchgear operating handles are installed below the anti-climbing device. The earthing and bonding conductor shall be stranded copper conductors of a minimum cross sectional area of 35mm² for 11kV and 70mm² for 33kV. The earthing and bonding conductor shall be green/yellow PVC covered. The top section of stays shall always be bonded to the adjacent steelwork, regardless of whether the steelwork itself is earthed. The earthing conductor shall be connected to one or more Approved earth rods at a minimum depth of 600mm to establish an earth electrode with a maximum resistance value of 40 ohms. The first earth rod shall be positioned as close as possible to the base of the pole. Where appropriate, deep driving of earth rods can be employed as an alternative to a multi-rod installation. The earthing conductor shall be protected from the bottom of the pole to above the anti-climbing device by an insulated 3.0m long cable guard buried in the ground to a depth of 150mm. The method of installation of earthing for switchgear is detailed in OHL Neutral Earths Where there is a requirement to install a LV neutral earth on any structure the method of installation is detailed in OHL The neutral earth conductor up to the first earth rod shall be 35mm² copper conductor for transformers up to and including 100kVA and 70mm² copper conductor for 200kVA transformers. The neutral earth conductor up to the first earth rod shall be black in colour and PVC covered. SP Power Systems Ltd Page 25 of 182 Design Manual (SPD, SPM)

26 kV Transformers Transformers in excess of 25kVA and up to and including 100kVA may be mounted on single poles structures (Drawing Reference SP ). This is dependent on the transformer manufacturer and mounting arrangements available. Transformers in excess of 100kVA shall only be mounted on H Poles (Drawing Reference SP ). An alternative to an H Pole may be a single pole and lay leg structure. Where a lay leg is the preferred method of installation, these poles should be obtained at the required length from the pole supplier. Poles shall not be cut to length on site. At such positions all steelwork and other supporting metalwork mounted on the pole above the anticlimbing device shall be bonded and earthed in accordance with the requirements specified in Section The down dropper jumpers shall be installed in accordance with the requirements specified in Section The methods of installation of transformers are detailed in OHL The transformer LV neutral earth shall be installed in accordance with the requirements specified in Section Switchgear All switchgear, with the exception of switchgear with the unearthed hook stick method of operation, shall be installed on earthed poles in accordance with the requirements specified in Section They shall be erected at the pole top below the line conductors. Surge arresters shall be installed as directed by the Engineer and shall be fitted in accordance with Section For 11kV applications the down dropper jumpers shall be installed in accordance with the requirements specified in OHL The methods of installation of Pole Mounted Switchgear are detailed in OHL , OHL , OHL and OHL Air Break Switch Disconnectors (ABSD) ABSDs shall not be installed on earthed poles. They shall be of an unearthed hook stick operated type, erected in a horizontal position at the pole top below the line conductors. At such positions all steelwork and other supporting metalwork mounted on the pole above the anticlimbing device, if fitted, shall be bonded in accordance with the requirements specified in Section For 11kV applications the down dropper jumpers shall be installed in accordance with the requirements specified in OHL The method of installation of ABSDs is detailed in OHL SP Power Systems Ltd Page 26 of 182 Design Manual (SPD, SPM)

27 12.20 HV Cable Terminations All HV cables shall be terminated using Approved terminations on poles below the conductors in accordance with OHL and OHL The jumpers shall be installed in accordance with Section All connectors shall satisfy the requirements of ENA TS The HV cable shall be secured from 200mm below ground level up to the termination and it shall be protected from the bottom of the pole to above the anti-climbing device by an insulated 3.0m long cable guard buried in the ground to a depth of 150mm. Cognisance should be taken of the requirements of OHL when considering the routing of the cable and associated earthing system. All metalwork on the pole including the cable termination associated mounting steelwork and metallic cable sheath/screen above the anti-climbing device shall be bonded and earthed in accordance with Section There may be exceptional circumstances where the bonding and earthing arrangements require a site specific solution and this shall be clarified by the design engineer. Surge arresters shall normally be incorporated in the cable termination and shall be fitted in accordance with Section Surge Arresters Approved surge arresters shall be fitted to protect cables, metal enclosed switchgear and elsewhere directed by the Engineer. Where surge arresters are to be erected on a pole, whether incorporated in a cable termination or directly mounted on an item of plant, they shall be connected directly in the current path as close to the plant or cable termination lugs as possible. One continuous 70mm² copper conductor which shall be green/yellow PVC covered, shall be installed directly from the apparatus earthing terminal or the outer surge arrester to the first earth rod which shall be positioned as close as possible to the base of the pole. The metallic cable sheath/screen of underground cables shall be connected to the crucifix star point, which shall then be connected to the surge arrester earth by a 70mm² copper conductor, which shall also be green/yellow PVC covered. All other metalwork on the pole including the cable termination associated mounting steelwork above the anti-climbing device shall be bonded to the surge arrester earth by a 35mm² copper conductor for 11kV and a 70mm² copper conductor for 33kV applications. The bonding conductor shall be green/yellow PVC covered in accordance with Section The earth electrode shall have a maximum resistance value of 10 Ohms Insulated Shrouding Insulated shrouding shall be fitted to all 11kV plant and equipment as directed by the Engineer. Further guidance can be found in OHL SP Power Systems Ltd Page 27 of 182 Design Manual (SPD, SPM)

28 13. APPENDICES SUMMARY Appendix 1 11kV Normal Weather Area 50mm 2 AAAC Hazel Conductor (L10) Appendix 2 11kV Severe Weather Area 100mm 2 AAAC Oak Conductor (L27) Appendix 3 33kV Normal Weather Area 150mm 2 AAAC Ash Conductor (L27) Appendix 4 33kV Normal Weather Area 200mm 2 AAAC Poplar Conductor (L33) Appendix 5 33kV Severe Weather Area 200mm 2 AAAC Poplar Conductor (L33) Appendix 6 33kV Severe Weather Area 300mm 2 AAAC Upas Conductor (L35) Appendix 7 Installation requirements for Conductors incorporating Optical Fibres (L34 & L36) Appendix 8 Installation Requirements for Horse OPGW SP Power Systems Ltd Page 28 of 182 Design Manual (SPD, SPM)

29 14. APPENDIX 1 11kV NORMAL WEATHER AREA 50MM 2 AAAC HAZEL CONDUCTOR (L10) 14.1 Design Parameters Design Parameters Conductor Code Name Hazel Greased Conductor Weight (kg/m) Cross Sectional Area of Conductor (mm²) 59.9 Conductor Overall Diameter (mm) 9.9 Coefficient of Linear Expansion (/Degree C) Modulus of Elasticity (kg/mm²) Rated Breaking Strength of Conductor (kgf) Basic / Recommended Span (m) 100 Wind Pressure on Conductor (N/m²) 380 Radial Ice Thickness (mm) 5 Ice Density (kg/m³) 913 Absolute Maximum Working Tension (MWT) Limit (kgf) Temperature at MWT Limit (Degrees C) -5.6 Maximum "Everyday" Tension (EDT) Limit (kgf) Temperature at EDT Limit (Degrees C) 5 Maximum Conductor Tension (MCT) -5.6ºC Maximum Conductor Weight (MCW) (kg/m) Maximum Conductor Pressure (MCP) (kg/m) Freezing Point Tension (FPT) 0ºC Equipment Weight (kg) 600 Design Temperature Maximum Conductor Temperature for Assessing Ground Clearances 50ºC Factors of Safety Unstayed Poles 3.5 Pole Foundations 2.5 Stayed Poles 2.5 Stays 2.5 Steelwork 2.5 Pin Insulators 2.5 SP Power Systems Ltd Page 29 of 182 Design Manual (SPD, SPM)

30 14.2 Table 1 Support Types and Duties Table for 50mm 2 Hazel AAAC Structure Type Max Span Length (m) Max Gradient Angle of Line Deviation 100 1:10 0 Intermediate Single Pole 90 1:5* 0 SP Energy Networks Drawing Reference SP Pin Angle Single Pole 100 1:10 10 SP Single Pole 109 1:10 0 SP Straight Section H Pole 109 1:10 0 SP H Pole (Long Span) 130 1:10 0 SP Single Pole 110 1:10 60 SP Angle Section Single Pole 100 1:10 75 SP H Pole 110 1:10 75 SP H Pole (Long Span) 130 1:10 30 SP Double Terminal Single Pole 100 1: SP Single Pole 114 1:5 0 SP Terminal H Pole 114 1:5 0 SP Note: * See Section for guidance on hillside applications. SP Power Systems Ltd Page 30 of 182 Design Manual (SPD, SPM)

31 14.3 Table 2 Conductor Design Table for 50mm² Hazel AAAC Temp. Tension Sag (m) for Span (m) (Deg. C) (kgf) SP Power Systems Ltd Page 31 of 182 Design Manual (SPD, SPM)

32 14.4 Table 3 Conductor Pre-Tension Table for 50mm 2 Hazel AAAC Pre-tension at all Sag (m) for Span (m) temperatures (kgf) kgf Table 4 Conductor Erection Table for 50mm 2 Hazel AAAC Temp. Tension Sag (m) for Span (m) (Deg. C) (kgf) SP Power Systems Ltd Page 32 of 182 Design Manual (SPD, SPM)

33 14.6 Table 5 Maximum Angle of Deviation for Single Poles for 50mm 2 Hazel AAAC Angle of Stay Slope Grade 1150 Stay Wire 1 x 7/4.00mm 2 x 7/4.00mm Table 6 Maximum Angle of Deviation for H Poles for 50mm 2 Hazel AAAC Angle of Stay Slope Grade 1150 Stay Wire 2 x 7/4.00mm 3 x 7/4.00mm Note: The minimum grade of pole for angles in excess of 5 shall be stout as defined in BS For single pole angles between 75 and 100 a double terminal structure shall be used (SP Energy Networks Drawing Reference SP ). Where a double terminal structure is employed it shall be fitted with 4 splayed stays. Where two stays are installed on an H pole structure they shall both be fitted to the outer limb. SP Power Systems Ltd Page 33 of 182 Design Manual (SPD, SPM)

34 14.8 Table 7 Strut Load in Single Poles with One or Two Stays (kgf) for 50mm 2 Hazel AAAC Stay Angle LINE ANGLE Strut Load (kgf) Level Conditions * Downpull 1: * Note: * Denotes value for selection of terminal pole at specified gradient. SP Power Systems Ltd Page 34 of 182 Design Manual (SPD, SPM)

35 14.9 Table 8 Strut Load in H Poles with Two or Three Stays (kgf) for 50mm 2 Hazel AAAC Stay Angle LINE ANGLE Strut Load (kgf) Level Conditions * Downpull 1:10 60 * Note: * Denotes value for selection of terminal pole at specified gradient. SP Power Systems Ltd Page 35 of 182 Design Manual (SPD, SPM)

36 14.10 Table 9 Strut Load in Single Pole Double Terminal Structures with Four Stays (kgf) for 50mm 2 Hazel AAAC LINE ANGLE Level Conditions Downpull 1:10 Stay Angle Strut Load (kgf) Table 10 Strut Loading in Single Pole Construction Terminals (kgf) for 50mm 2 Hazel AAAC LINE ANGLE Structure Back Stay Angle (64 ) Level Conditions Construction Terminal 5622 kgf Downpull 1:10 Construction Terminal 6617 kgf SP Power Systems Ltd Page 36 of 182 Design Manual (SPD, SPM)

37 14.12 Table 11 Stayed Pole Strut Capabilities for 50mm 2 Hazel AAAC Pole (m) Pole Top Dia. (mm) Dia. 1.5m from Butt Taper (mm/m) Planting Depth (mm) Pole Strut Strength (kgf) SP Power Systems Ltd Page 37 of 182 Design Manual (SPD, SPM)

38 14.13 Table 12 Pole Sizing for Single Pole Intermediate and Section Poles for 50mm 2 Hazel AAAC Pole Length (m) Maximum Wind Span Length (m) Diameter of Pole 1.5m from Butt (mm) x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x 400 Pole Length (m) Foundation Depth (m) inc inc inc inc 2.4 SP Power Systems Ltd Page 38 of 182 Design Manual (SPD, SPM)

39 15. APPENDIX 2 11kV SEVERE WEATHER AREA 100MM 2 AAAC OAK CONDUCTOR (L27) 15.1 Design Parameters Design Parameters Conductor Code name Oak Greased Conductor Weight (kg/m) Cross Sectional Area of Conductor (mm²) Conductor Overall Diameter (mm) 14 Coefficient of Linear Expansion (/Degree C) Modulus of Elasticity (kg/mm²) Rated Breaking Strength of Conductor (kgf) Basic / Recommended Span (m) 90 Wind Pressure on Conductor (N/m²) 380 Radial Ice Thickness (mm) 9.5 Ice Density (kg/m³) 913 Absolute Maximum Working Tension (MWT) Limit (kgf) Temperature at MWT Limit (Degrees C) -5.6 Maximum "Everyday" Tension (EDT) Limit (kgf) Temperature at EDT Limit (Degrees C) 5 Maximum Conductor Tension (MCT) -5.6ºC Maximum Conductor Weight (MCW) (kg/m) Maximum Conductor Pressure (MCP) (kg/m) Freezing Point Tension (FPT) 0ºC Equipment Weight (kg) 600 Design Temperature Maximum Conductor Temperature for Assessing Ground Clearances 50ºC Factors of Safety Unstayed Poles 3.5 Pole Foundations 2.5 Stayed Poles 2.5 Stays 2.5 Steelwork 2.5 Pin Insulators 2.5 SP Power Systems Ltd Page 39 of 182 Design Manual (SPD, SPM)

40 15.2 Table 1 Support Types and Duties Table for 100mm2 Oak AAAC (Severe Weather Area) Structure Type Max Span Length (m) Max Gradient Angle of Line Deviation 95 1:10 0 Intermediate Single Pole 90 1:5* 0 SP Energy Networks Drawing Reference SP Single Pole 103 1:10 0 SP Straight Section H Pole 103 1:10 0 SP H Pole (Long Span) 123 1:10 0 SP Single Pole 100 1:10 60 SP Angle Section H Pole 100 1:10 75 SP H Pole (Long Span) 130 1:10 30 SP Single Pole 105 1:10 0 SP Terminal H Pole 105 1:5 0 SP Note: * See Section for guidance on hillside applications. SP Power Systems Ltd Page 40 of 182 Design Manual (SPD, SPM)

41 15.3 Table 2 Conductor Design Table for 100mm² Oak AAAC (Severe Weather Area) Temp. Tension Sag (m) for Span (m) (Deg. C) (kgf) SP Power Systems Ltd Page 41 of 182 Design Manual (SPD, SPM)

42 15.4 Table 3 Conductor Pre-Tension Table for 100mm 2 Oak AAAC (Severe Weather Area) Pre-tension Sag (m) for Span (m) at all temperatures (kgf) Table 4 Conductor Erection Table for 100mm 2 Oak AAAC (Severe Weather Area) Temp. Tension Sag (m) for Span (m) (Deg. C) (kgf) SP Power Systems Ltd Page 42 of 182 Design Manual (SPD, SPM)

43 15.6 Table 5 Maximum Angle of Deviation for Single Poles for 100mm 2 Oak AAAC (Severe Weather Area) Angle of Stay Slope Grade 1150 Stay Wire 1 x 7/4.00mm 2 x 7/4.00mm Table 6 Maximum Angle of Deviation for H Poles for 100mm 2 Oak AAAC (Severe Weather Area) Angle of Stay Slope Grade 1150 Stay Wire 3 x 7/4.00mm 4 x 7/4.00mm SP Power Systems Ltd Page 43 of 182 Design Manual (SPD, SPM)

44 15.8 Table 7 Strut Load in Single Poles with One or Two Stays (kgf) for 100mm 2 Oak AAAC (Severe Weather Area) Stay Angle LINE ANGLE Strut Load (kgf) Level Conditions * 12975* Downpull 1: * 14693* Downpull 1: * Note: * Denotes value for selection of terminal pole at specified gradient. SP Power Systems Ltd Page 44 of 182 Design Manual (SPD, SPM)

45 15.9 Table 8 Strut Load in H Poles with Three Stays (kgf) for 100mm 2 Oak AAAC (Severe Weather Area) Stay Angle LINE ANGLE Strut Load (kgf) Level Conditions * Downpull 1: * Note: * Denotes value for selection of terminal pole at specified gradient. SP Power Systems Ltd Page 45 of 182 Design Manual (SPD, SPM)

46 Table 8 Strut Load in H Poles with Three Stays (kgf) for 100mm 2 Oak AAAC (Severe Weather Area) (Cont.) Stay Angle LINE ANGLE Strut Load (kgf) Downpull 1: * Note: * Denotes value for selection of terminal pole at specified gradient Table 9 Strut Loading in Single Pole Construction Terminals (kgf) for 100mm 2 Oak AAAC (Severe Weather Area) LINE ANGLE Structure Back Stay Angle (64 ) Level Conditions Construction Terminal 8191 kgf Downpull 1:5 Construction Terminal kgf SP Power Systems Ltd Page 46 of 182 Design Manual (SPD, SPM)

47 15.11 Table 10 Stayed Pole Strut Capabilities for 100mm 2 Oak AAAC (Severe Weather Area) Pole (m) Pole Top Dia. (mm) Dia. 1.5m from Butt Taper (mm/m) Planting Depth (mm) Pole Strut Strength (kgf) SP Power Systems Ltd Page 47 of 182 Design Manual (SPD, SPM)

48 15.12 Table 11 Pole Sizing for Single Pole Intermediate and Section Poles for 100mm 2 Oak AAAC (Severe Weather Area) Pole Length (m) Maximum Wind Span Length (m) Diameter of Pole 1.5m from Butt (mm) * 2 x x * 2 x x * 2 x x * 2 x x * 2 x x * 2 x x * 2 x x * 2 x x * 2 x x * 2 x x * 2 x x * 2 x x * 395* 2 x x * 2 x x * 2 x x * 2 x x 435 Note: Pole sizes marked * shall have two blocks fitted Pole Length (m) Foundation Depth (m) inc inc inc inc 2.8 SP Power Systems Ltd Page 48 of 182 Design Manual (SPD, SPM)

49 16. APPENDIX 3 33kV NORMAL WEATHER AREA 150MM 2 AAAC ASH CONDUCTOR (L27) 16.1 Design Parameters Design Parameters Conductor Code name ASH Greased Conductor Weight (kg/m) Cross Sectional Area of Conductor (mm²) Conductor Overall Diameter (mm) 17.4 Coefficient of Linear Expansion (/Degree C) Modulus of Elasticity (kg/mm²) 5700 Rated Breaking Strength of Conductor (kgf) Basic / Recommended Span (m) 90 Wind Pressure on Conductor (N/m²) 380 Radial Ice Thickness (mm) 9.5 Ice Density (kg/m³) 913 Absolute Maximum Working Tension (MWT) Limit (kgf) Temperature at MWT Limit (Degrees C) -5.6 Maximum "Everyday" Tension (EDT) Limit (kgf) Temperature at EDT Limit (Degrees C) 5 Maximum Conductor Tension (MCT) -5.6ºC Maximum Conductor Weight (MCW) (kg/m) Maximum Conductor Pressure (MCP) (kg/m) Freezing Point Tension (FPT) 0ºC Equipment Weight (kg) 600 Design Temperature Maximum Conductor Temperature for Assessing Ground Clearances 50ºC Factors of Safety Unstayed Poles 3.5 Pole Foundations 2.5 Stayed Poles 2.5 Stays 2.5 Steelwork 2.5 Pin Insulators 2.5 SP Power Systems Ltd Page 49 of 182 Design Manual (SPD, SPM)

50 16.2 Table 1 Support Types and Duties Table for 150mm 2 Ash AAAC (Normal Weather Area) Structure Type Max Span Length (m) Max Gradient Angle of Line Deviation 100 1:10 0º Intermediate Single Pole 90 1:5* 0º SP Energy Networks Drawing Reference SP Single Pole 110 1:10 0º SP Straight Section H Pole 110 1:10 0º SP H Pole (Long Span) 130 1:10 0º SP Single Pole 100 1:10 45º SP Angle Section H Pole 100 1:10 75º SP H Pole 90 1:10 90º SP H Pole (Long Span) 120 1:10 15º SP Terminal H Pole 110 1:10 0º SP Note: * See Section for guidance on hillside applications. SP Power Systems Ltd Page 50 of 182 Design Manual (SPD, SPM)

51 16.3 Table 2 Conductor Design Table for 150mm² Ash AAAC (Normal Weather Area) Temp. Tension Sag (m) for Span (m) (Deg. C) (kgf) SP Power Systems Ltd Page 51 of 182 Design Manual (SPD, SPM)

52 16.4 Table 3 Conductor Pre-Tension Table for 150mm 2 Ash AAAC (Normal Weather Area) Pre-tension Sag (m) for Span (m) at all temperatures (kgf) Table 4 Conductor Erection Table for 150mm 2 Ash AAAC (Normal Weather Area) Temp. Tension Sag (m) for Span (m) (Deg. C) (kgf) SP Power Systems Ltd Page 52 of 182 Design Manual (SPD, SPM)

53 16.6 Table 5 Maximum Angle of Deviation for Single Poles for 150mm 2 Ash AAAC (Normal Weather Area) Angle of Stay Slope Grade 1150 Stay Wire 1 x 7/4.00mm 2 x 7/4.00mm Table 6 Maximum Angle of Deviation for H Poles for 150mm 2 Ash AAAC (Normal Weather Area) Angle of Stay Slope Grade 1150 Stay Wire 3 x 7/4.00mm 4 x 7/4.00mm Table 7 Strut Load in Single Poles with One or Two Stays (kgf) for 150mm 2 Ash AAAC (Normal Weather Area) LINE ANGLE Level Conditions Downpull 1:10 Stay Angle Strut Load (kgf) SP Power Systems Ltd Page 53 of 182 Design Manual (SPD, SPM)

54 16.9 Table 8 Strut Load in H Poles with Three Stays (kgf) for 150mm 2 Ash AAAC (Normal Weather Area) LINE ANGLE Level Conditions Downpull 1:10 Stay Angle Strut Load (kgf) SP Power Systems Ltd Page 54 of 182 Design Manual (SPD, SPM)

55 16.10 Table 9 Strut Load in H Pole Structures with Four Stays (kgf) for 150mm 2 Ash AAAC (Normal Weather Area) Stay Angle LINE ANGLE Strut Load (kgf) Level Conditions * Downpull 1: * Note: * Denotes value for selection of terminal pole at specified gradient Table 10 Strut Loading in Single Pole Construction Terminals (kgf) for 150mm 2 Ash AAAC (Normal Weather Area) LINE ANGLE Structure Back Stay Angle (64 ) Level Conditions Construction Terminal 9625 Downpull 1:10 Construction Terminal SP Power Systems Ltd Page 55 of 182 Design Manual (SPD, SPM)

56 16.12 Table 11 Stayed Pole Strut Capabilities for 150mm 2 Ash AAAC (Normal Weather Area) Pole (m) Pole Top Dia. (mm) Dia. 1.5m from Butt Taper (mm/m) Planting Depth (mm) Pole Strut Strength (kgf) SP Power Systems Ltd Page 56 of 182 Design Manual (SPD, SPM)

57 16.13 Table 12 Pole Sizing for Single Pole Intermediate and Section Poles for 150mm 2 Ash AAAC (Normal Weather Area) Pole Length (m) Maximum Wind Span Length (m) Diameter of Pole 1.5m from Butt (mm) * 2 x x * 2 x x * 2 x x * 2 x x * 2 x x * 2 x x * 2 x x * 2 x x * 2 x x * 2 x x * 2 x x * 2 x x * 395* 2 x x * 2 x x * 2 x x * 2 x x 435 Note: Pole sizes marked * shall have two blocks fitted Pole Length (m) Foundation Depth (m) inc inc inc inc 2.8 SP Power Systems Ltd Page 57 of 182 Design Manual (SPD, SPM)

58 17. APPENDIX 4 33kV NORMAL WEATHER AREA 200MM 2 AAAC POPLAR CONDUCTOR (L33) 17.1 Design Parameters Design Parameters Conductor Code name Poplar Greased Conductor Weight (kg/m) Cross Sectional Area of Conductor (mm²) Conductor Overall Diameter (mm) Coefficient of Linear Expansion (/Degree C) Modulus of Elasticity (kg/mm²) 5700 Rated Breaking Strength of Conductor (kgf) 7200 Basic / Recommended Span (m) 90 Wind Pressure on Conductor (N/m²) 380 Radial Ice Thickness (mm) 9.5 Ice Density (kg/m³) 913 Absolute Maximum Working Tension (MWT) Limit (kgf) Temperature at MWT Limit (Degrees C) -5.6 Maximum "Everyday" Tension (EDT) Limit (kgf) Temperature at EDT Limit (Degrees C) 5 Maximum Conductor Tension (MCT) -5.6ºC Maximum Conductor Weight (MCW) (kg/m) Maximum Conductor Pressure (MCP) (kg/m) Freezing Point Tension (FPT) 0ºC Design Temperature Maximum Conductor Temperature for Assessing Ground Clearances 65ºC Factors of Safety Unstayed Poles 3.5 Pole Foundations 2.5 Stayed Poles 3.0 Stays 3.5 Steelwork 3.0 Pin Insulators 2.5 SP Power Systems Ltd Page 58 of 182 Design Manual (SPD, SPM)

59 17.2 Table 1 Support Types and Duties Table for 200mm 2 Poplar AAAC (Normal Weather Area) Structure Type Max Span Length (m) Max Gradient Angle of Line Deviation 100 1:10 0º Single Pole Intermediate 90 1:5* 0º SP Energy Networks Drawing Reference SP H Pole (Long Span) 130 1:10 0º SP Single Pole 110 1:10 0º SP Straight Section H Pole 110 1:10 0º SP H Pole (Long Span) 130 1:10 0º SP H Pole (Delta) 100 1:5 0º SP Single Pole 110 1:10 30º SP Angle Section H Pole 100 1:10 60º SP H Pole (Long Span) 130 1:10 10º SP Terminal H Pole 110 1:5 0º SP Note: * See Section for guidance on hillside applications. SP Power Systems Ltd Page 59 of 182 Design Manual (SPD, SPM)

60 17.3 Table 2 Conductor Design Table for 200mm² Poplar AAAC (Normal Weather Area) Temp. Tension Sag (m) for Span (m) (Deg. C) (kgf) SP Power Systems Ltd Page 60 of 182 Design Manual (SPD, SPM)

61 17.4 Table 3 Conductor Pre-Tension Table for 200mm 2 Poplar AAAC (Normal Weather Area) Pre-tension Sag (m) for Span (m) at all temperatures (kgf) kgf Table 4 Conductor Erection Table for 200mm 2 Poplar AAAC (Normal Weather Area) Temp. Tension Sag (m) for Span (m) (Deg. C) (kgf) SP Power Systems Ltd Page 61 of 182 Design Manual (SPD, SPM)

62 17.6 Table 5 Maximum Angle of Deviation for Single Poles for 200mm 2 Poplar AAAC (Normal Weather Area) Angle of Stay Slope Grade 1150 Stay Wire 1 x 7/4.00mm 2 x 7/4.00mm Table 6 Maximum Angle of Deviation for H Poles for 200mm 2 Poplar AAAC (Normal Weather Area) Angle of Stay Slope Grade 1150 Stay Wire 3 x 7/4.00mm 4 x 7/4.00mm Table 7 Strut Load in Single Poles with One or Two Stays (kgf) for 200mm 2 Poplar AAAC (Normal Weather Area) LINE ANGLE Level Conditions Downpull 1:10 Stay Angle Strut Load (kgf) SP Power Systems Ltd Page 62 of 182 Design Manual (SPD, SPM)

63 17.9 Table 8 Strut Load in H Poles with Three Stays (kgf) for 200mm 2 Poplar AAAC (Normal Weather Area) LINE ANGLE Level Conditions Downpull 1:10 Stay Angle Strut Load (kgf) SP Power Systems Ltd Page 63 of 182 Design Manual (SPD, SPM)

64 17.10 Table 9 Strut Load in H Poles with Four Stays (kgf) for 200mm 2 Poplar AAAC (Normal Weather Area) Stay Angle LINE ANGLE Strut Load (kgf) Level Conditions * Downpull 1: * Note: * Denotes value for selection of terminal pole at specified gradient Table 10 Strut Loading in Single Pole Construction Terminals (kgf) for 200mm 2 Poplar AAAC (Normal Weather Area) LINE ANGLE Structure Back Stay Angle (64 ) Level Conditions Construction Terminal kgf Downpull 1:10 Construction Terminal kgf SP Power Systems Ltd Page 64 of 182 Design Manual (SPD, SPM)

65 17.12 Table 11 Stayed Pole Strut Capabilities for 200mm 2 Poplar AAAC (Normal Weather Area) Pole (m) Pole Top Dia. (mm) Dia. 1.5m from Butt Taper (mm/m) Planting Depth (mm) Pole Strut Strength (kgf) SP Power Systems Ltd Page 65 of 182 Design Manual (SPD, SPM)

66 17.13 Table 12 Pole Sizing for Intermediate and Section Poles for 200mm 2 Poplar AAAC (Normal Weather Area) Pole Length (m) Maximum Wind Span Length (m) Diameter of Pole 1.5m from Butt (mm) * 2 x x * 315* 2 x x * 300* 320* 2 x x * 305* 325* 2 x x * 310* 310* 330* 2 x x * 315* 315* 335* 2 x x * 340* 2 x x * 345* 2 x x * 340* 360* 2 x x * 355* 355* 375* 2 x x * 390* 2 x x * 385* 385* 2 x x * 395* 395* 395* 2 x x * 410* 410* 2 x x * 435* 435* 2 x x * 455* 455* 2 x x 435 Note: Pole sizes marked * shall have two ENA TS Type 2 blocks fitted Pole Length (m) Foundation Depth (m) inc inc inc inc 2.8 SP Power Systems Ltd Page 66 of 182 Design Manual (SPD, SPM)

67 18. APPENDIX 5 33kV SEVERE WEATHER AREA 200MM 2 AAAC POPLAR CONDUCTOR (L33) 18.1 Design Parameters Design Parameters Conductor Code name Poplar Greased Conductor Weight (kg/m) Cross Sectional Area of Conductor (mm²) Conductor Overall Diameter (mm) Coefficient of Linear Expansion (/Degree C) Modulus of Elasticity (kg/mm²) 5700 Rated Breaking Strength of Conductor (kgf) 7200 Basic / Recommended Span (m) 80 Wind Pressure on Conductor (N/m²) 380 Radial Ice Thickness (mm) 9.5 Ice Density (kg/m³) 913 Absolute Maximum Working Tension (MWT) Limit (kgf) Temperature at MWT Limit (Degrees C) -5.6 Maximum "Everyday" Tension (EDT) Limit (kgf) 1440 Temperature at EDT Limit (Degrees C) 5 Maximum Conductor Tension (MCT) -5.6ºC Maximum Conductor Weight (MCW) (kg/m) Maximum Conductor Pressure (MCP) (kg/m) Freezing Point Tension (FPT) 0ºC Design Temperature Maximum Conductor Temperature for Assessing Ground Clearances 65ºC Factors of Safety Unstayed Poles 3.5 Pole Foundations 3.5 Stayed Poles 3.5 Stays 3.5 Steelwork 3.5 Pin Insulators 3.5 SP Power Systems Ltd Page 67 of 182 Design Manual (SPD, SPM)

68 18.2 Table 1 Support Types and Duties Table for 200mm 2 Poplar AAAC (Severe Weather Area) Structure Type Max Span Length (m) Max Gradient Angle of Line Deviation SP Energy Networks Drawing Reference Single Pole 100 1:10 0º SP Intermediate Single Pole 80 1:5* 0º SP H Pole (Long Span) 130 1:10 0º SP Single Pole 100 1:10 0º SP Straight Section H Pole 110 1:10 0º SP H Pole (Long Span) 100 1:10 0º SP H Pole (Delta) 100 1:5 0º SP Single Pole 100 1:10 30º SP Angle Section H Pole 130 1:10 60º SP H Pole (Long Span) 100 1:10 10º SP Terminal H Pole 100 1:5 0º SP Note: * See Section for guidance on hillside applications. SP Power Systems Ltd Page 68 of 182 Design Manual (SPD, SPM)

69 18.3 Table 2 Conductor Design Table for 200mm² Poplar AAAC (Severe Weather Area) Temp. Tension Sag (m) for Span (m) (Deg. C) (kgf) SP Power Systems Ltd Page 69 of 182 Design Manual (SPD, SPM)

70 18.4 Table 3 Conductor Pre-Tension Table for 200mm 2 Poplar AAAC (Severe Weather Area) Pre-tension Sag (m) for Span (m) at all temperatures (kgf) Table 4 Conductor Erection Table for 200mm 2 Poplar AAAC (Severe Weather Area) Temp. Tension Sag (m) for Span (m) (Deg. C) (kgf) SP Power Systems Ltd Page 70 of 182 Design Manual (SPD, SPM)

71 18.6 Table 5 Maximum Angle of Deviation for Single Poles for 200mm 2 Poplar AAAC (Severe Weather Area) Angle of Stay Slope Grade 1150 Stay Wire 1 x 7/4.00mm 2 x 7/4.00mm Table 6 Maximum Angle of Deviation for H Poles for 200mm 2 Poplar AAAC (Severe Weather Area) Angle of Stay Slope Grade 1150 Stay Wire 3 x 7/4.00mm 4 x 7/4.00mm Table 7 Strut Load in Single Poles with One or Two Stays (kgf) for 200mm 2 Poplar AAAC (Severe Weather Area) LINE ANGLE Level Conditions Downpull 1:10 Stay Angle Strut Load (kgf) SP Power Systems Ltd Page 71 of 182 Design Manual (SPD, SPM)

72 18.9 Table 8 Strut Load in H Poles with Three Stays (kgf) for 200mm 2 Poplar AAAC (Severe Weather Area) LINE ANGLE Level Conditions Downpull 1:10 Stay Angle Strut Load (kgf) SP Power Systems Ltd Page 72 of 182 Design Manual (SPD, SPM)

73 18.10 Table 9 Strut Load in H Poles with Four Stays (kgf) for 200mm 2 Poplar AAAC (Severe Weather Area) Stay Angle LINE ANGLE Strut Load (kgf) Level Conditions * Downpull 1: * Note: * Denotes value for selection of terminal pole at specified gradient Table 10 Strut Loading in Single Pole Construction Terminals (kgf) for 200mm 2 Poplar AAAC (Severe Weather Area) LINE ANGLE Structure Back Stay Angle (64 ) Level Conditions Construction Terminal Downpull 1:10 Construction Terminal SP Power Systems Ltd Page 73 of 182 Design Manual (SPD, SPM)

74 18.12 Table 11 Stayed Pole Strut Capabilities for 200mm 2 Poplar AAAC (Severe Weather Area) Pole (m) Pole Top Dia. (mm) Dia. 1.5m from Butt Taper (mm/m) Planting Depth (mm) Pole Strut Strength (kgf) SP Power Systems Ltd Page 74 of 182 Design Manual (SPD, SPM)

75 18.13 Table 12 Pole Sizing for Single Pole Intermediate and Section Poles for 200mm 2 Poplar AAAC (Severe Weather Area) Pole Length (m) Maximum Wind Span Length (m) Diameter of Pole 1.5m from Butt (mm) * 305* 305* 2 x x x * 315* 315* 2 x x x * 320* 320* 2 x x x * 325* 325* 2 x x x * 330* 330* 2 x x x * 335* 335* 2 x x x * 340* 340* 2 x x x * 345* 345* 2 x x x * 360* 360* 2 x x x * 375* 375* 2 x x x * 390* 390* 2 x x x * 405* 405* 2 x x x * 415* 415* 2 x x x * 430* 430* 2 x x x * 455* 455* 2 x x x * 475* 475* 2 x x x 435 Note: Pole sizes marked * shall have two blocks fitted Pole Length (m) Foundation Depth (m) inc inc inc inc 3.0 SP Power Systems Ltd Page 75 of 182 Design Manual (SPD, SPM)

76 19. APPENDIX 6 33kV SEVERE WEATHER AREA 300MM 2 AAAC UPAS CONDUCTOR (L35) 19.1 Design Parameters Design Parameters Conductor Code name Upas Greased Conductor Weight (kg/m) Cross Sectional Area of Conductor (mm²) Conductor Overall Diameter (mm) Coefficient of Linear Expansion (/Degree C) 2.30E-05 Modulus of Elasticity (kg/mm²) 5810 Rated Breaking Strength of Conductor (kgf) Basic / Recommended Span (m) 80 Wind Pressure on Conductor (N/m²) 380 Radial Ice Thickness (mm) 9.5 Ice Density (kg/m³) 913 Absolute Maximum Working Tension (MWT) Limit (kgf) Temperature at MWT Limit (Degrees C) -5.6 Maximum "Everyday" Tension (EDT) Limit (kgf) Temperature at EDT Limit (Degrees C) 5 Maximum Conductor Tension (MCT) -5.6ºC Maximum Conductor Weight (MCW) (kg/m) Maximum Conductor Pressure (MCP) (kg/m) Freezing Point Tension (FPT) 0ºC Design Temperature Maximum Conductor Temperature for Assessing Ground Clearances 65ºC Factors of Safety Unstayed Poles 3.5 Pole Foundations 3.5 Stayed Poles 3.5 Stays 3.5 Steelwork 3.5 Pin Insulators 3.5 SP Power Systems Ltd Page 76 of 182 Design Manual (SPD, SPM)

77 19.2 Table 1 Support Types and Duties Table for 300mm 2 Upas AAAC (Severe Weather Area) Structure Type Max Span Length (m) Max Gradient Angle of Line Deviation 100 1:10 0º Intermediate Single Pole 80 1:5* 0º SP Energy Networks Drawing Reference SP Single Pole 100 1:10 0º SP Straight Section H Pole (Delta Long Span) 130 1:10 0º SP H Pole (Delta) 80 1:5 0º SP Single Pole 100 1:10 22º SP Angle Section H Pole 100 1:10 60º SP H Pole (Delta Long Span) 110 1:10 10º SP Terminal H Pole 100 1:5 0º SP Note: * See Section for guidance on hillside applications. SP Power Systems Ltd Page 77 of 182 Design Manual (SPD, SPM)

78 19.3 Table 2 Conductor Design Table for 300mm² Upas AAAC (Severe Weather Area) Temp. Tension Sag (m) for Span (m) (Deg. C) (kgf) SP Power Systems Ltd Page 78 of 182 Design Manual (SPD, SPM)

79 19.4 Table 3 Conductor Pre-Tension Table for 300mm 2 Upas AAAC (Severe Weather Area) Pre-tension Sag (m) for Span (m) at all temperatures (kgf) Table 4 Conductor Erection Table for 300mm 2 Upas AAAC (Severe Weather Area) Temp. Tension Sag (m) for Span (m) (Deg. C) (kgf) SP Power Systems Ltd Page 79 of 182 Design Manual (SPD, SPM)

80 19.6 Table 5 Maximum Angle of Deviation for Single Poles for 300mm 2 Upas AAAC (Severe Weather Area) Angle of Stay Slope Grade 1150 Stay Wire 1 x 7/4.00mm 2 x 7/4.00mm Table 6 Maximum Angle of Deviation for H Poles for 300mm 2 Upas AAAC (Severe Weather Area) Angle of Stay Slope Grade 1150 Stay Wire 3 x 7/4.00mm 4 x 7/4.00mm Table 7 Strut Load in Single Poles with One or Two Stays (kgf) for 300mm 2 Upas AAAC (Severe Weather Area) LINE ANGLE Level Conditions Downpull 1:10 Stay Angle Strut Load (kgf) SP Power Systems Ltd Page 80 of 182 Design Manual (SPD, SPM)

81 19.9 Table 8 Strut Load in H Poles with Three Stays (kgf) for 300mm 2 Upas AAAC (Severe Weather Area) LINE ANGLE Level Conditions Downpull 1:10 Stay Angle Strut Load (kgf) SP Power Systems Ltd Page 81 of 182 Design Manual (SPD, SPM)

82 19.10 Table 9 Strut Load in H Pole Structures with Four Stays (kgf) for 300mm 2 Upas AAAC (Severe Weather Area) Stay Angle LINE ANGLE Strut Load (kgf) Level Conditions * Downpull 1: * Note: * Denotes value for selection of terminal pole at specified gradient Table 10 Strut Loading in Single Pole Construction Terminals (kgf) for 300mm 2 Upas AAAC (Severe Weather Area) LINE ANGLE Structure Back Stay Angle (64 ) Level Conditions Construction Terminal Downpull 1:10 Construction Terminal SP Power Systems Ltd Page 82 of 182 Design Manual (SPD, SPM)

83 19.12 Table 11 Stayed Pole Strut Capabilities for 300mm 2 Upas AAAC (Severe Weather Area) Pole (m) Pole Top Dia. (mm) Dia. 1.5m from Butt Taper (mm/m) Planting Depth (mm) Pole Strut Strength (kgf) Note: The minimum pole top diameter for single poles of angles in excess of 13 shall be 215mm. The minimum pole top diameter for H poles of angles in excess of 31 shall be 225mm. SP Power Systems Ltd Page 83 of 182 Design Manual (SPD, SPM)

84 19.13 Table 12 Pole Sizing for Intermediate and Section Poles for 300mm 2 Upas AAAC (Severe Weather Area) Pole Length (m) Maximum Wind Span Length (m) Diameter of Pole 1.5m from Butt (mm) * 285* 2 x x * 295* 2 x x * 300* 300* 2 x x * 305* 325* 2 x x * 310* 330* 2 x x * 315* 335* 2 x x * 320* 340* 2 x x * 325* 345* 2 x x * 340* 360* 2 x x * 335* 355* 2 x x x * 370* 2 x x * 385* 2 x x * 395* 2 x x * 410* 2 x x * 435* 2 x x * 455* 2 x x 435 Note: Pole sizes marked * shall have two blocks fitted Pole Length (m) Foundation Depth (m) inc inc inc inc 3.0 SP Power Systems Ltd Page 84 of 182 Design Manual (SPD, SPM)

85 20. APPENDIX 7 INSTALLATION REQUIREMENTS FOR CONDUCTORS INCORPORATING OPTICAL FIBRES 20.1 Introduction This appendix has been prepared to provide a design for 33kV overhead lines suitable for installation on SP Energy Networks network, utilising optical fibre communication cores embedded within the phase conductors. The optical fibres are enclosed within two separate stainless steel tubes in a phase conductor. This appendix is complementary to the equivalent standard conductor installation requirements, and should be read in conjunction with it. This appendix details the specific stringing requirements for: 200mm² AAAC Poplar Equivalent OPPC (L34) 300mm² AAAC Upas Equivalent OPPC (L36) 20.2 General When compared to a standard overhead line construction, lines incorporating optical fibres shall have the centre phase conductors substituted with an equivalent OPPC. All overhead line components and design parameters shall comply with the requirements of the standard conductor as specified in the relevant appendix with the exception of those specified in the following sections. There are specific installation techniques, which require to be employed when installing lines incorporating optical fibres within the conductors. Supplementary guidance for the erection of OPPC, to be used in conjunction with conventional conductor installation guidance, is documented in OHL OPPC The maximum working tension of an equivalent OPPC is designed to be the same as for a standard AAAC conductor. However, due to the difference in physical construction of the OPPC when compared with standard conductor, the maximum sag of the OPPC will be marginally less than standard conductor, therefore the maximum design sag for the standard conductor should be used when profiling as indicated in Table 2 of the relevant appendix Crossarms, Supports and Stays As the loadings for the equivalent OPPC are almost identical to the standard conductor, structure sizing, stay strength and their deployment, and crossarm sizing shall be in accordance with the corresponding standard conductor appendix. SP Power Systems Ltd Page 85 of 182 Design Manual (SPD, SPM)

86 20.3 Materials Except where otherwise specified, all materials used in the construction of lines to this appendix shall comply with current British Standards, ENA Technical Specifications and international standards where appropriate. Only Approved materials shall be used OPPC The optical conductors physical and electrical parameters considered by this specification are detailed in OHL Each conductor shall incorporate two stainless steel buffer tubes each containing a minimum of 12 single mode optical fibres Vibration Damper As for standard 33kV line construction, no vibration dampers are normally required to be employed on the OPPC Suspension Components 33kV polymeric post insulators and armour grip suspension clamps shall be used at all intermediate insulator positions. The proposed suspension arrangements are not designed to take any uplift load. Where the structure is deemed to be in uplift, the line should be sectioned and tension support components employed. SP Power Systems Ltd Page 86 of 182 Design Manual (SPD, SPM)

87 Upas Equivalent OPPC Tension String Components From termination strap on the crossarm, the following components are required for termination of the OPPC: SP Power Systems Ltd Page 87 of 182 Design Manual (SPD, SPM)

88 Poplar Equivalent OPPC Tension String Components From termination strap on the crossarm, the following components are required for the OPPC: SP Power Systems Ltd Page 88 of 182 Design Manual (SPD, SPM)

89 20.4 Optical Splice Enclosures At OPPC in-line splice and terminal positions, only Approved fibre optic splice enclosures may be installed. These fittings comprise of a rigid stand-off composite insulator and one or two fibre optic splice chambers where appropriate. At terminal positions these will be mounted on two H Pole carryover channels as detailed in SP Energy Networks Drawing Reference SP and secured using two transformer clamping plates as detailed in ENA TS Drawing Reference At in-line splice positions, on H Pole section structures, the unit will be mounted on the centre phase conductor section strap. On Single pole section structures, the unit will be mounted on the outside of the angle on the section crossarm. This component shall be substituted for items 11 & 13 of the general assembly drawings. They will be located on section and terminal structures as indicated on SP Energy Networks Drawing Reference SP In order to prevent damage to the stainless steel buffer tubes containing the optical fibres the line conductor should be dressed directly from the dead end fitting directly to the splice enclosures and should be installed in such a manner to ensure the minimum bending radius of the conductor is not compromised. Only competent persons who have been appointed by SP Energy Networks shall carry out the splicing of the optical fibres Electrical Connections At terminal positions where a load carrying electrical connection is required, for example, to a cable termination, these should be connected to the splice enclosure jumper by one or two 3-bolt parallel groove clamps. (See also general arrangement drawings and associated component listings). Parallel groove clamps should be used for all electrical connections associated with the OPPC. It is essential that all conductors are thoroughly cleaned using a suitable wire brush and an Approved conductive paste should be applied to the conductor prior to the application of the parallel groove clamps. The clamps should be tightened with a suitable torque wrench to the manufacturer s recommended torque. Compression fittings must not be applied to the OPPC conductor. At splice enclosures, the termination connecting rod should be cleaned using 150-grade abrasive paper and an Approved conductive paste should be applied to the conductor and connecting rod prior to the application of the parallel groove clamp(s) Earthing As is normal practise, all metalwork including optical splice enclosures on all structures shall be bonded and/or earthed in accordance with OHL A connection hole is provided on the base plate of the optical termination unit to which the earthbonding lug should be connected Optical Fibre Cable Connections The fibre optic underground cables shall be secured every 500mm down the pole and protected at the bottom of the pole by cable guards 3.0m long sunk 150mm into the ground. SP Power Systems Ltd Page 89 of 182 Design Manual (SPD, SPM)

90 20.7 General Arrangement OPPC Splice Enclosures SP Power Systems Ltd Page 90 of 182 Design Manual (SPD, SPM)

91 21. APPENDIX 7A POPLAR EQUIVALENT OPTICAL CONDUCTOR (L34) mm 2 AAAC Poplar Equivalent OPPC Conductor (Normal Weather Area) Table 1 200mm 2 AAAC Poplar Equivalent OPPC Conductor (Normal Weather Area) Design Parameters Conductor Code name Poplar OPPC Greased Conductor Weight (kg/m) Cross Sectional Area of Conductor (mm²) Conductor Overall Diameter (mm) Coefficient of Linear Expansion (/Degree C) Modulus of Elasticity (kg/mm²) 5700 Rated Breaking Strength of Conductor (kgf) 6808 Basic / Recommended Span (m) 90 Wind Pressure on Conductor (N/m²) 380 Radial Ice Thickness (mm) 9.5 Ice Density (kg/m³) 913 Absolute Maximum Working Tension (MWT) Limit (kgf) Temperature at MWT Limit (Degrees C) -5.6 Maximum "Everyday" Tension (EDT) Limit (kgf) Temperature at EDT Limit (Degrees C) 5 Maximum Conductor Tension (MCT) -5.6ºC Maximum Conductor Weight (MCW) (kg/m) Maximum Conductor Pressure (MCP) (kg/m) Freezing Point Tension (FPT) 0ºC SP Power Systems Ltd Page 91 of 182 Design Manual (SPD, SPM)

92 Table 2 Conductor Design Table for 200mm² Poplar Equivalent OPPC AAAC (Normal Weather Area) Temp. Tension Sag (m) for Span (m) (Deg. C) (kgf) SP Power Systems Ltd Page 92 of 182 Design Manual (SPD, SPM)

93 Table 3 Conductor Pre-Tension Table for 200mm² Poplar Equivalent OPPC AAAC (Normal Weather Area) Pre-tension Sag (m) for Span (m) at all temperatures (kgf) Table 4 Conductor Erection Table for 200mm² Poplar Equivalent OPPC AAAC (Normal Weather Area) Temp. Tension Sag (m) for Span (m) (Deg. C) (kgf) SP Power Systems Ltd Page 93 of 182 Design Manual (SPD, SPM)

94 mm 2 AAAC Poplar Equivalent Optical Conductor (Severe Weather Area) (L34) Table 1 200mm 2 AAAC Poplar Equivalent OPPC Conductor (Severe Weather Area) Design Parameters Conductor Code name Poplar OPPC Greased Conductor Weight (kg/m) Cross Sectional Area of Conductor (mm²) Conductor Overall Diameter (mm) Coefficient of Linear Expansion (/Degree C) Modulus of Elasticity (kg/mm²) 5700 Rated Breaking Strength of Conductor (kgf) 6808 Basic / Recommended Span (m) 80 Wind Pressure on Conductor (N/m²) 380 Radial Ice Thickness (mm) 9.5 Ice Density (kg/m³) 913 Absolute Maximum Working Tension (MWT) Limit (kgf) 2200 Temperature at MWT Limit (Degrees C) -5.6 Maximum "Everyday" Tension (EDT) Limit (kgf) 1440 Temperature at EDT Limit (Degrees C) 5 Maximum Conductor Tension (MCT) -5.6ºC Maximum Conductor Weight (MCW) (kg/m) Maximum Conductor Pressure (MCP) (kg/m) Freezing Point Tension (FPT) 0ºC SP Power Systems Ltd Page 94 of 182 Design Manual (SPD, SPM)

95 Table 2 Conductor Design Table for 200mm² Poplar Equivalent OPPC AAAC (Severe Weather Area) Temp. Tension Sag (m) for Span (m) (Deg. C) (kgf) SP Power Systems Ltd Page 95 of 182 Design Manual (SPD, SPM)

96 Table 3 Conductor Pre-Tension Table for 200mm² Poplar Equivalent OPPC AAAC (Severe Weather Area) Pre-tension Sag (m) for Span (m) at all temperatures (kgf) Table 4 Conductor Erection Table for 200mm² Poplar Equivalent OPPC AAAC (Severe Weather Area) Temp. Tension Sag (m) for Span (m) (Deg. C) (kgf) SP Power Systems Ltd Page 96 of 182 Design Manual (SPD, SPM)

97 22. APPENDIX 7B UPAS EQUIVALENT OPTICAL CONDUCTOR (SEVERE WEATHER AREA) (L36) 22.1 Table 1 300mm 2 AAAC Upas Equivalent OPPC Conductor (Severe Weather Area) Design Parameters Conductor Code name Upas OPPC Greased Conductor Weight (kg/m) Cross Sectional Area of Conductor (mm²) Conductor Overall Diameter (mm) Coefficient of Linear Expansion (/Degree C) 2.30E-05 Modulus of Elasticity (kg/mm²) 5810 Rated Breaking Strength of Conductor (kgf) Basic / Recommended Span (m) 80 Wind Pressure on Conductor (N/m²) 380 Radial Ice Thickness (mm) 9.5 Ice Density (kg/m³) 913 Absolute Maximum Working Tension (MWT) Limit (kgf) Temperature at MWT Limit (Degrees C) -5.6 Maximum "Everyday" Tension (EDT) Limit (kgf) Temperature at EDT Limit (Degrees C) 5 Maximum Conductor Tension (MCT) -5.6ºC Maximum Conductor Weight (MCW) (kg/m) Maximum Conductor Pressure (MCP) (kg/m) Freezing Point Tension (FPT) 0ºC SP Power Systems Ltd Page 97 of 182 Design Manual (SPD, SPM)

98 22.2 Table 2 Conductor Design Table for 300mm² Upas Equivalent OPPC AAAC (Severe Weather Area) Temp. Tension Sag (m) for Span (m) (Deg. C) (kgf) SP Power Systems Ltd Page 98 of 182 Design Manual (SPD, SPM)

99 22.3 Table 3 Conductor Pre-Tension Table for 300mm 2 Upas Equivalent OPPC AAAC (Severe Weather Area) Pre-tension Sag (m) for Span (m) at all temperatures (kgf) Table 4 Conductor Erection Table for 300mm 2 Upas Equivalent OPPC AAAC (Severe Weather Area) Temp. Tension Sag (m) for Span (m) (Deg. C) (kgf) SP Power Systems Ltd Page 99 of 182 Design Manual (SPD, SPM)

100 23. APPENDIX 8 INSTALLATION REQUIREMENTS FOR HORSE OPGW This appendix has been prepared to provide a design for an OPGW conductor to replace the existing Hardex communication network on existing 33kV overhead lines structures. This appendix details the specific stringing requirements for a 70mm² AACSR Horse Equivalent OPGW General Where there is a requirement to modernise the existing Hardex communication network, OPGW may be employed in accordance with the following requirements. There are specific installation techniques, which require to be employed when installing conductors incorporating optical fibres. Supplementary guidance for the erection of OPPC, to be used in conjunction with conventional conductor installation guidance, is documented in OHL OPGW The maximum working tension of an equivalent OPGW is designed to be the same as for a standard AACSR conductor. However, due to the difference in physical construction of the OPGW when compared with standard conductor, the maximum sag of the OPGW will be marginally less than standard conductor, therefore the maximum design sag for the OPGW conductor may be used when profiling as indicated in Table 2 of this appendix. See Section for guidance on minimum height of conductors. Note: Land usage may have changed since the original line was profiled and obstacles may have been erected which could infringe on the basic requirements set out in Section , therefore it is recommended this is given full consideration Supports and Stays As the loadings for the OPGW are not significantly greater than the Hardex communication cable, there are no requirements to alter existing structures Materials Except where otherwise specified, all materials used in the construction of lines to this appendix shall comply with current British Standards, ENA Technical Specifications and international standards where appropriate. Only Approved materials shall be used OPGW The OPGW considered by this appendix is detailed in OHL Each conductor shall incorporate two stainless steel buffer tubes each containing a minimum of 12 single mode optical fibres Vibration Damper No vibration dampers are normally required to be employed on the OPGW Suspension Components The OPGW shall be supported at all intermediate positions using a standard pole outrigger bracket (ENA TS Drawing Reference ) in conjunction with a galvanised steel suspension link connected to an Armour Grip Suspension Clamp. SP Power Systems Ltd Page 100 of 182 Design Manual (SPD, SPM)

101 The pole bolt securing the outrigger bracket should be positioned 225mm above the profiled OPGW position to allow for the suspension components. The proposed suspension arrangements are not designed to take any uplift load. Where the structure is deemed to be in uplift, the line should be sectioned and tension support components employed Horse Equivalent Tension String Components From the BS 3288 Ref 14/88 eyebolt on the structure, the following components are required for termination of the OPGW: 1. Ball/ Hook (BS Ref. 15/ 32). 2. Socket/ clevis (BS Ref.15/ 84). 3. Single Link (length 400mm) 4. Thimble/clevis (BS Ref. 15/86) 5. Protection Rods 6. Helical dead-end Items 4-7 are generally supplied in a kit. Item Part name Q'ty Load Rating 1 Protection rods 1 70 kn 2 Dead end 1 70 kn 3 Thimble kn 4 400mm Link 1 70 kn Cable Connection to Splice Enclosures At OPGW intermediate and terminal splice positions an optical fibre splice enclosure is required to facilitate the splicing of the optical fibres. The optical splice enclosure shall be fixed above anti-climber level and secured using two 10mm x 75mm galvanised coach bolts. At terminal positions the Fibre Optic underground cables shall be secured every 500mm down the pole and protected at the bottom of the pole by cable guards 3.0m long sunk 150mm into the ground. SP Power Systems Ltd Page 101 of 182 Design Manual (SPD, SPM)

102 23.3 Conductor Design/Erection Sags and Tensions Conductor design sags and tensions are given in Tables 2 & 3 of this appendix. The original lines incorporating Hardex communications cables were profiled using a Wolf Sag template (normally 50 C) The design sag of the Horse OPGW replacement at an assumed maximum ambient temperature of 45 C whilst greater than the Hardex is equal to or slightly less than the Wolf Profile used when the line was originally planned and hence the Horse OPGW may be strung as a direct replacement for the Hardex communications cable. The erection tensions given in Table 3 of this appendix are based on the conductor design tension, but have been subjected to an over tension equivalent to a -13 C temperature shift to allow for bedding in of the strands and long term creep of the conductor during the life of the line. No pretensioning or other adjustments is necessary during the erection of the line Location of OPGW Attachment Points on Structures. The attachment positions for OPGW on all structures will be as follows: Straight Section, Intermediate and Pin Angle Structures The Outrigger Bracket (ENA TS Drawing Reference ) shall be installed: 1365mm below phase conductors for spans up to 107m. 1675mm below phase conductors for spans up to 152m Angle Section and Terminal Structures The Eye Bolt (ENA TS Drawing Reference ) shall be installed: 1520mm below phase conductors for spans up to 107m. 1830mm below phase conductors for spans up to 152m 23.5 Bonding and Earthing of OPGW and Components As is common with all metalwork on structures constructed to this specification, at optical splice enclosure positions, the splice enclosure will be required to be bonded in accordance with Section The OPGW shall also be bonded to all steelwork on the structure. In addition it shall be earthed at intervals of approximately 400m in accordance with Section SP Power Systems Ltd Page 102 of 182 Design Manual (SPD, SPM)

103 24. APPENDIX 8A HORSE EQUIVALENT OPGW CONDUCTOR (80M BASIC SPAN) 24.1 Table 1 70mm 2 AACSR Horse Equivalent OPGW Conductor (80m Basic Span) Design Parameters Conductor Code name Horse OPGW Greased Conductor Weight (kg/m) Cross Sectional Area of Conductor (mm²) Conductor Overall Diameter (mm) Coefficient of Linear Expansion (/Degree C) Modulus of Elasticity (kg/mm²) 9177 Rated Breaking Strength of Conductor (kgf) 5948 Basic / Recommended Span (m) 80 Wind Pressure on Conductor (N/m²) 380 Radial Ice Thickness (mm) 9.5 Ice Density (kg/m³) 913 Absolute Maximum Working Tension (MWT) Limit (kgf) Temperature at MWT Limit (Degrees C) -5.6 Maximum "Everyday" Tension (EDT) Limit (kgf) Temperature at EDT Limit (Degrees C) 5 Maximum Conductor Tension (MCT) -5.6ºC Maximum Conductor Weight (MCW) (kg/m) Maximum Conductor Pressure (MCP) (kg/m) Freezing Point Tension (FPT) 0ºC Design Temperature Maximum Conductor Temperature for Assessing Ground Clearances 45 0 C SP Power Systems Ltd Page 103 of 182 Design Manual (SPD, SPM)

104 24.2 Table 2 Conductor Design Table for 70mm² Horse Equivalent OPGW AACSR (80m Basic Span) Temp. Tension Sag (m) for Span (m) (Deg. C) (kgf) SP Power Systems Ltd Page 104 of 182 Design Manual (SPD, SPM)

105 24.3 Table 3 Conductor Erection Table for 70mm² Horse Equivalent OPGW AACSR (80m Basic Span) Temp. Tension Sag (m) for Span (m) (Deg. C) (kgf) SP Power Systems Ltd Page 105 of 182 Design Manual (SPD, SPM)

106 25. APPENDIX 8B HORSE EQUIVALENT OPGW CONDUCTOR (100M BASIC SPAN) 25.1 Table 1 70mm 2 AACSR Horse Equivalent OPGW Conductor (100m Basic Span) Design Parameters Conductor Code name Horse OPGW Greased Conductor Weight (kg/m) Cross Sectional Area of Conductor (mm²) Conductor Overall Diameter (mm) Coefficient of Linear Expansion (/Degree C) Modulus of Elasticity (kg/mm²) 9000 Rated Breaking Strength of Conductor (kgf) Basic / Recommended Span (m) 100 Wind Pressure on Conductor (N/m²) 380 Radial Ice Thickness (mm) 9.5 Ice Density (kg/m³) 913 Absolute Maximum Working Tension (MWT) Limit (kgf) Temperature at MWT Limit (Degrees C) -5.6 Maximum "Everyday" Tension (EDT) Limit (kgf) Temperature at EDT Limit (Degrees C) 5 Maximum Conductor Tension (MCT) -5.6ºC Maximum Conductor Weight (MCW) (kg/m) Maximum Conductor Pressure (MCP) (kg/m) Freezing Point Tension (FPT) 0ºC Design Temperature Maximum Conductor Temperature for Assessing Ground Clearances 45ºC SP Power Systems Ltd Page 106 of 182 Design Manual (SPD, SPM)

107 25.2 Table 2 Conductor Design Table for 70mm² Horse Equivalent OPGW AACSR (100m Basic Span) Temp. Tension Sag (m) for Span (m) (Deg. C) (kgf) SP Power Systems Ltd Page 107 of 182 Design Manual (SPD, SPM)

108 25.3 Table 3 Conductor Erection Table for 70mm² Horse Equivalent OPGW AACSR (100m Basic Span) Temp. Tension Sag (m) for Span (m) (Deg. C) (kgf) SP Power Systems Ltd Page 108 of 182 Design Manual (SPD, SPM)

109 26. APPENDIX 8C HORSE EQUIVALENT OPGW CONDUCTOR (120M BASIC SPAN) 26.1 Table 1 70mm 2 AACSR Horse Equivalent OPGW Conductor (120m Basic Span) Design Parameters Conductor Code name Horse OPGW Greased Conductor Weight (kg/m) Cross Sectional Area of Conductor (mm²) Conductor Overall Diameter (mm) Coefficient of Linear Expansion (/Degree C) Modulus of Elasticity (kg/mm²) 9000 Rated Breaking Strength of Conductor (kgf) Basic / Recommended Span (m) 120 Wind Pressure on Conductor (N/m²) 380 Radial Ice Thickness (mm) 9.5 Ice Density (kg/m³) 913 Absolute Maximum Working Tension (MWT) Limit (kgf) Temperature at MWT Limit (Degrees C) -5.6 Maximum "Everyday" Tension (EDT) Limit (kgf) Temperature at EDT Limit (Degrees C) 5 Maximum Conductor Tension (MCT) -5.6ºC Maximum Conductor Weight (MCW) (kg/m) Maximum Conductor Pressure (MCP) (kg/m) Freezing Point Tension (FPT) 0ºC Design Temperature Maximum Conductor Temperature for Assessing Ground Clearances 45ºC SP Power Systems Ltd Page 109 of 182 Design Manual (SPD, SPM)

110 26.2 Table 2 Conductor Design Table for 70mm² Horse Equivalent OPGW AACSR (120m Basic Span) Temp. Tension Sag (m) for Span (m) (Deg. C) (kgf) SP Power Systems Ltd Page 110 of 182 Design Manual (SPD, SPM)

111 26.3 Table 3 Conductor Erection Table for 70mm² Horse Equivalent OPGW AACSR (120m Basic Span) Temp. Tension Sag (m) for Span (m) (Deg. C) (kgf) SP Power Systems Ltd Page 111 of 182 Design Manual (SPD, SPM)

112 27. DRAWINGS AND COMPONENT LISTINGS Figure 1 11kV Single Pole Member Drilling, Scarfing and Marking (Drawing Reference SP ) Figure 2 11kV H Pole Member Drilling, Scarfing and Marking (Drawing Reference SP ) Figure 3 33kV Light Construction Single Pole Member Drilling, Scarfing and Marking (Drawing Reference SP ) Figure 4 33kV Light Construction H Pole Member Drilling, Scarfing and Marking (Drawing Reference SP ) Figure 5 33kV Heavy Construction Single Pole Member Drilling, Scarfing and Marking (Drawing Reference SP ) Figure 6 33kV Heavy Construction H Pole Member Drilling, Scarfing and Marking (Drawing Reference SP ) Figure 7 Delta H Pole Member Drilling, Scarfing and Marking (Drawing Reference SP ) Figure 8 Single Pole Intermediate or Pin Angle (Drawing Reference SP ) Figure 9 Single Pole Intermediate or Pin Angle (Drawing Reference SP ) Figure 10 H Pole Intermediate Long Span (Drawing Reference SP ) Figure 11 Single Pole Straight Line or Angle Section (Drawing Reference SP ) Figure 12 Single Pole Straight Line or Angle Section (Drawing Reference SP ) Figure 13 H Pole Straight Line or Angle Section (Drawing Reference SP ) Figure 14 Long Span H Pole Straight Line or Angle Section (Drawing Reference SP )133 Figure 15 Delta H Pole Section or Section Angle (Drawing Reference SP ) Figure 16 Delta Long Span H Pole Section or Section Angle (Drawing Reference SP ) Figure 17 Single Pole Terminal (Drawing Reference SP ) Figure 18 H Pole Terminal (Drawing Reference SP ) Figure 19 Single Pole Double Terminal (Drawing Reference SP ) Figure 20 General Arrangement Intermediate Crossarm (Drawing Reference SP ) Figure 21 General Arrangement Section Crossarm (Drawing Reference SP ) Figure 22 General Arrangement Terminal Crossarm (Drawing Reference SP ) Figure 23 General Arrangement Long Span Crossarm (Drawing Reference SP ) Figure 24 General Arrangement Crossarm Strut (Drawing Reference SP ) Figure 25 General Arrangement Long Crossarm Strut (Drawing Reference SP ) Figure 26 General Arrangement Long Span Delta Crossarm Strut (Drawing Reference SP ) Figure 27 General Arrangement Terminal Strap (Drawing Reference SP ) Figure 28 General Arrangement Section Strap (Drawing Reference SP ) Figure 29 General Arrangement Insulator Bracket (Drawing Reference SP ) Figure 30 General Arrangement Insulator Plate (Drawing Reference SP ) Figure 31 General Arrangement Foundation Brace Steelwork H Pole 1830mm Centres (Drawing Reference SP ) Figure 32 General Arrangement Foundation Brace Steelwork H Pole 2500mm Centres (Drawing Reference SP ) SP Power Systems Ltd Page 112 of 182 Design Manual (SPD, SPM)

113 Figure 33 General Arrangement Stay and Foundation Blocks (Drawing Reference SP ) 158 Figure 34 General Arrangement Wood Brace Block Type 1 H Pole 1830mm Centres (Drawing Reference SP ) Figure 35 General Arrangement Wood Brace Block Type 2 H Pole 2500mm Centres (Drawing Reference SP ) Figure 36 General Arrangement H Pole Carryover Support Steelwork (Drawing Reference SP ) Figure 37 General Arrangement H Pole Cable Cleat / Coffin Support Steelwork (Drawing Reference SP ) Figure 38 General Arrangement H Pole Crucifix Support Steelwork (Drawing Reference SP ) Figure 39 General Arrangement Single Pole Fuse Steelwork (Drawing Reference SP ). 164 Figure 40 General Arrangement Single Pole Fuse Outrigger Steelwork (Drawing Reference SP ) Figure 41 General Arrangement H Pole Fuse Steelwork (Drawing Reference SP ) Figure 42 General Arrangement Surge Arrester Support Steelwork (Drawing Reference SP ) Figure 43 General Arrangement Delta H Section Strap (Drawing Reference SP ) Figure 44 General Arrangement Terminal Bracing Strap (Drawing Reference SP ) Figure 45 General Arrangement Terminal Bracing Strap (Drawing Reference SP ) Figure 46 General Arrangement Long Section Strap for Long Span Delta H Pole (Drawing Reference SP ) Figure 47 General Arrangement Heavy Construction Stay Attachment Plates (Drawing Reference SP ) Figure 48 General Arrangement Heavy Construction Stay Attachment (Drawing Reference SP ) Figure 49 General Arrangement Transformer Platform Steelwork for a Single Pole (Drawing Reference SP ) Figure 50 General Assembly Transformer Platform Steelwork for a Single Pole (Drawing Reference SP ) Figure 51 General Arrangement Transformer Platform Steelwork for an H Pole (Drawing Reference SP ) Figure 52 General Assembly Transformer Platform Steelwork for an H Pole (Drawing Reference SP ) Figure 53 General Arrangement Single Pole Bog Shoe (Drawing Reference SP ) Figure 54 General Arrangement H Pole Bog Shoe (Drawing Reference SP ) Figure 55 General Arrangement Bog Shoe Strut (Drawing Reference SP ) Figure 56 General Arrangement 30 Angle Bracket (Drawing Reference SP ) Figure 57 General Arrangement Wind Stay Attachment (Drawing Reference SP ) SP Power Systems Ltd Page 113 of 182 Design Manual (SPD, SPM)

114 27.1 Figure 1 11kV Single Pole Member Drilling, Scarfing and Marking (Drawing Reference SP ) SP Power Systems Ltd Page 114 of 182 Design Manual (SPD, SPM)

115 27.2 Figure 2 11kV H Pole Member Drilling, Scarfing and Marking (Drawing Reference SP ) SP Power Systems Ltd Page 115 of 182 Design Manual (SPD, SPM)

116 27.3 Figure 3 33kV Light Construction Single Pole Member Drilling, Scarfing and Marking (Drawing Reference SP ) SP Power Systems Ltd Page 116 of 182 Design Manual (SPD, SPM)

117 27.4 Figure 4 33kV Light Construction H Pole Member Drilling, Scarfing and Marking (Drawing Reference SP ) SP Power Systems Ltd Page 117 of 182 Design Manual (SPD, SPM)

118 27.5 Figure 5 33kV Heavy Construction Single Pole Member Drilling, Scarfing and Marking (Drawing Reference SP ) SP Power Systems Ltd Page 118 of 182 Design Manual (SPD, SPM)

119 27.6 Figure 6 33kV Heavy Construction H Pole Member Drilling, Scarfing and Marking (Drawing Reference SP ) SP Power Systems Ltd Page 119 of 182 Design Manual (SPD, SPM)

120 27.7 Figure 7 Delta H Pole Member Drilling, Scarfing and Marking (Drawing Reference SP ) SP Power Systems Ltd Page 120 of 182 Design Manual (SPD, SPM)

121 27.8 Figure 8 Single Pole Intermediate or Pin Angle (Drawing Reference SP ) SP Power Systems Ltd Page 121 of 182 Design Manual (SPD, SPM)

122 General Assembly Arrangement Single Pole Intermediate or Pin Angle (Drawing Reference SP ) ITEM NUMBER DESCRIPTION ENA TS, BS or OTHER REFERENCE DRAWING NUMBER 01 1 Wood Pole ENA TS or 2 Pole Block ENA TS Type 2 SP Intermediate Crossarm Member ENA TS SP Crossarm Strut ENA TS SP Insulator ENA TS Insulator Pin BS 3288 Fig 4, Ref Helical Ties ENA TS or 4 M20 Pole Bolt (HYS) and Nut. Length to suit Pole diameter ENA TS Clause 4.2 (Grade 8.8 HYS) M20 x 60mm Assembly Bolt and Nut ENA TS Clause or 2 M20 Square Curved Washer ENA TS or 4 M20 Square Flat Washer ENA TS or 2 Safety Sign - English - - Bilingual As Required Pole Numbers Insulator Bracket ENA TS SP As Required Hardwood Plugs ENA TS SP Power Systems Ltd Page 122 of 182 Design Manual (SPD, SPM)

123 27.9 Figure 9 Single Pole Intermediate or Pin Angle (Drawing Reference SP ) SP Power Systems Ltd Page 123 of 182 Design Manual (SPD, SPM)

124 General Assembly Arrangement Single Pole Intermediate or Pin Angle (Drawing Reference SP ) ITEM NUMBER DESCRIPTION ENA TS, BS or OTHER REFERENCE DRAWING NUMBER 01 1 Wood Pole ENA TS or 2 Pole Block ENA TS Type 2 SP Intermediate Crossarm Member ENA TS SP Crossarm Strut ENA TS SP Insulator ENA TS Insulator Pin BS 3288 Fig 4, Ref Helical Ties ENA TS or 4 M20 Pole Bolt (HYS) and Nut. Length to suit Pole diameter ENA TS Clause 4.2 (Grade 8.8 HYS) M20 x 60mm Assembly Bolt and Nut ENA TS Clause or 2 M20 Square Curved Washer ENA TS or 2 M20 Square Flat Washer ENA TS or 2 Safety Sign - English - Bilingual As Required Pole Numbers Insulator Bracket ENA TS SP Insulator Plate - SP As Required Hardwood Plugs ENA TS SP Power Systems Ltd Page 124 of 182 Design Manual (SPD, SPM)

125 27.10 Figure 10 H Pole Intermediate Long Span (Drawing Reference SP ) SP Power Systems Ltd Page 125 of 182 Design Manual (SPD, SPM)

126 General Assembly Arrangement H Pole Intermediate Long Span (Drawing Reference SP ) ITEM NUMBER DESCRIPTION ENA TS, BS or OTHER REFERENCE DRAWING NUMBER 01 2 Wood Pole ENA TS or 4 Pole Block ENA TS Type 2 SP Long Span Crossarm Member ENA TS SP Insulator ENA TS Insulator Pin BS 3288 Fig 4, Ref Helical Ties ENA TS or 10 M20 Pole Bolt (HYS) and Nut. Length to suit Pole diameter ENA TS Clause 4.2 (Grade 8.8 HYS) M20 Tie Rods ENA TS Type 2 or M20 x 60mm Assembly Bolt and Nut ENA TS Clause or 8 M20 Square Curved Washer ENA TS or 6 M20 Square Flat Washer ENA TS or 4 Safety Sign - English - Bilingual As Required Pole Numbers Insulator Plate - SP Foundation Brace Steelwork 2500mm centres ENA TS SP Foundation Brace Block ENA TS Type 2 SP As Required Hardwood Plugs ENA TS SP Power Systems Ltd Page 126 of 182 Design Manual (SPD, SPM)

127 27.11 Figure 11 Single Pole Straight Line or Angle Section (Drawing Reference SP ) SP Power Systems Ltd Page 127 of 182 Design Manual (SPD, SPM)

128 General Assembly Arrangement Single Pole Straight Line or Angle Section (Drawing Reference SP ) ITEM NUMBER DESCRIPTION ENA TS, BS or OTHER REFERENCE DRAWING NUMBER 01 1 Wood Pole ENA TS or 2 Pole Block ENA TS Type 2 SP Section Crossarm Member ENA TS SP Crossarm Strut ENA TS SP Terminal Strap ENA TS SP Section Strap ENA TS SP Pin Insulator ENA TS Pilot Pin 50mm Shank BS 3288 Fig 5, Ref Helical Ties ENA TS Ball End Hook BS 3288 Fig 12 Ref 15/ Tension Insulator ENA TS Helical Dead End Assembly ENA TS Non Tension Joint or 4 M20 Pole Bolt (HYS) and Nut. Length to suit Pole diameter ENA TS Clause 4.2 (Grade 8.8 HYS) M20 Tie Rods ENA TS Type 2 or M20 x 60mm Assembly Bolt and Nut ENA TS Clause or 2 M20 Square Curved Washer ENA TS or 2 M20 Square Flat Washer ENA TS or 2 Safety Sign - English - Bilingual As Required Pole Numbers - - As Required Hardwood Plugs ENA TS SP Power Systems Ltd Page 128 of 182 Design Manual (SPD, SPM)

129 27.12 Figure 12 Single Pole Straight Line or Angle Section (Drawing Reference SP ) SP Power Systems Ltd Page 129 of 182 Design Manual (SPD, SPM)

130 General Assembly Arrangement Single Pole Straight Line or Angle Section (Drawing Reference SP ) ITEM NUMBER DESCRIPTION ENA TS, BS or OTHER REFERENCE DRAWING NUMBER 01 1 Wood Pole ENA TS or 2 Pole Block ENA TS Type 2 SP Section Crossarm Member ENA TS SP Long Crossarm Strut - SP Terminal Strap ENA TS SP Section Strap ENA TS SP Pin Insulator ENA TS Pilot Pin 50mm Shank BS 3288 Fig 5, Ref Helical Ties ENA TS Ball End Hook BS 3288 Fig 12 Ref 15/ Tension Insulator ENA TS Helical Dead End Assembly ENA TS Non Tension Joint or 4 M20 Pole Bolt (HYS) and Nut. Length to suit Pole diameter ENA TS Clause 4.2 (Grade 8.8 HYS) or 4 M20 Tie Rods ENA TS Type 2 or M20 x 60mm Assembly Bolt and Nut ENA TS Clause or 2 M20 Square Curved Washer ENA TS or 2 M20 Square Flat Washer ENA TS or 2 Safety Sign - English - Bilingual As Required Pole Numbers - - As Required Hardwood Plugs ENA TS SP Power Systems Ltd Page 130 of 182 Design Manual (SPD, SPM)

131 27.13 Figure 13 H Pole Straight Line or Angle Section (Drawing Reference SP ) SP Power Systems Ltd Page 131 of 182 Design Manual (SPD, SPM)

132 General Assembly Arrangement H Pole Straight Line or Angle Section (Drawing Reference SP ) ITEM NUMBER DESCRIPTION ENA TS, BS or OTHER REFERENCE DRAWING NUMBER 01 2 Wood Pole ENA TS or 4 Pole Block ENA TS Type 2 SP Section Crossarm Member ENA TS SP Section Strap ENA TS SP Pin Insulator ENA TS Pilot Pin 50mm Shank BS 3288 Fig 5, Ref Helical Ties ENA TS Ball End Hook BS 3288 Fig 12 Ref 15/ Tension Insulator ENA TS Helical Dead End Assembly ENA TS Non Tension Joint or 10 M20 Pole Bolt (HYS) and Nut. Length to suit Pole diameter ENA TS Clause 4.2 (Grade 8.8 HYS) M20 Tie Rods ENA TS Type 2 or M20 x 60mm Assembly Bolt and Nut ENA TS Clause or 8 M20 Square Curved Washer ENA TS or 6 M20 Square Flat Washer ENA TS or 4 Safety Sign - English - Bilingual As Required Pole Numbers Foundation Brace Steelwork 1830mm centres ENA TS SP Foundation Brace Block ENA TS Type 1 SP As Required Hardwood Plugs ENA TS SP Power Systems Ltd Page 132 of 182 Design Manual (SPD, SPM)

133 27.14 Figure 14 Long Span H Pole Straight Line or Angle Section (Drawing Reference SP ) SP Power Systems Ltd Page 133 of 182 Design Manual (SPD, SPM)

134 General Assembly Long Span H Pole Straight Line or Angle Section (Drawing Reference SP ) ITEM NUMBER DESCRIPTION ENA TS, BS or OTHER REFERENCE DRAWING NUMBER 01 2 Wood Pole ENA TS or 4 Pole Block ENA TS Type 2 SP Long Span Crossarm Member ENA TS SP Section Strap ENA TS SP Pin Insulator ENA TS Pilot Pin 50mm Shank BS 3288 Fig 5, Ref Helical Ties ENA TS Ball End Hook BS 3288 Fig 12 Ref 15/ Tension Insulator ENA TS Helical Dead End Assembly ENA TS Non Tension Joint or 10 M20 Pole Bolt (HYS) and Nut. Length to suit Pole diameter ENA TS Clause 4.2 (Grade 8.8 HYS) M20 Tie Rods ENA TS Type 2 or M20 x 60mm Assembly Bolt and Nut ENA TS Clause or 8 M20 Square Curved Washer ENA TS or 6 M20 Square Flat Washer ENA TS or 4 Safety Sign - English - Bilingual As Required Pole Numbers Foundation Brace Steelwork 2500mm centres ENA TS SP Foundation Brace Block ENA TS Type 2 SP As Required Hardwood Plugs ENA TS SP Power Systems Ltd Page 134 of 182 Design Manual (SPD, SPM)

135 27.15 Figure 15 Delta H Pole Section or Section Angle (Drawing Reference SP ) SP Power Systems Ltd Page 135 of 182 Design Manual (SPD, SPM)

136 General Assembly Delta H Pole Section or Section Angle (Drawing Reference SP ) ITEM NUMBER DESCRIPTION ENA TS, BS or OTHER REFERENCE DRAWING NUMBER 01 2 Wood Pole ENA TS or 4 Pole Block ENA TS Type 2 SP Terminal Crossarm Member ENA TS SP Terminal Strap ENA TS SP Pin Insulator ENA TS Pilot Pin 50mm Shank BS 3288 Fig 5, Ref Helical Ties ENA TS Ball End Hook BS 3288 Fig 12 Ref 15/ Tension Insulator ENA TS Helical Dead End Assembly ENA TS Non Tension Joint or 12 M20 Pole Bolt (HYS) and Nut. Length to suit Pole diameter ENA TS Clause 4.2 (Grade 8.8 HYS) M20 Tie Rods ENA TS Type 2 or M20 x 60mm Assembly Bolt and Nut ENA TS Clause or 8 M20 Square Curved Washer ENA TS or 6 M20 Square Flat Washer ENA TS or 4 Safety Sign - English - Bilingual As Required Pole Numbers Foundation Brace Steelwork 1830mm centres ENA TS SP Foundation Brace Block ENA TS Type 1 SP Delta H Section Strap - SP Degree Angle Bracket - SP As Required Hardwood Plugs ENA TS SP Power Systems Ltd Page 136 of 182 Design Manual (SPD, SPM)

137 27.16 Figure 16 Delta Long Span H Pole Section or Section Angle (Drawing Reference SP ) SP Power Systems Ltd Page 137 of 182 Design Manual (SPD, SPM)

138 General Assembly Delta Long Span H Pole Section or Section Angle (Drawing Reference SP ) ITEM NUMBER DESCRIPTION ENA TS, BS or OTHER REFERENCE DRAWING NUMBER 01 2 Wood Pole ENA TS or 4 Pole Block ENA TS Type 2 SP Terminal Crossarm Member ENA TS SP Long Span Crossarm Member ENA TS SP Terminal Strap ENA TS SP Pin Insulator ENA TS Pilot Pin 50mm Shank BS 3288 Fig 5, Ref Helical Ties ENA TS Ball End Hook BS 3288 Fig 12 Ref 15/ Tension Insulator ENA TS Helical Dead End Assembly ENA TS Non Tension Joint or 10 M20 Pole Bolt (HYS) and Nut. Length to suit Pole diameter ENA TS Clause 4.2 (Grade 8.8 HYS) M20 Tie Rods ENA TS Type 2 or M20 x 60mm Assembly Bolt and Nut ENA TS Clause or 8 M20 Square Curved Washer ENA TS or 6 M20 Square Flat Washer ENA TS or 4 Safety Sign - English - Bilingual As Required Pole Numbers Foundation Brace Steelwork 1830mm centres ENA TS SP Foundation Brace Block ENA TS Type 1 SP Long Section Strap For Long Span Delta H Pole - SP Long Span Delta Crossarm Strut - SP As Required Hardwood Plugs ENA TS SP Power Systems Ltd Page 138 of 182 Design Manual (SPD, SPM)

139 27.17 Figure 17 Single Pole Terminal (Drawing Reference SP ) SP Power Systems Ltd Page 139 of 182 Design Manual (SPD, SPM)

140 General Assembly Single Pole Terminal (Drawing Reference SP ) ITEM NUMBER DESCRIPTION ENA TS, BS or OTHER REFERENCE DRAWING NUMBER 01 1 Wood Pole ENA TS or 2 Pole Block ENA TS Type 2 SP Terminal Crossarm Member ENA TS SP Crossarm Strut ENA TS SP Terminal Strap ENA TS SP Ball End Hook BS 3288 Fig 12 Ref 15/ Tension Insulator ENA TS Helical Dead End Assembly ENA TS or 4 M20 Pole Bolt (HYS) and Nut. Length to suit Pole diameter ENA TS Clause 4.2 (Grade 8.8 HYS) M20 Tie Rods ENA TS Type 2 or M20 x 60mm Assembly Bolt and Nut ENA TS Clause or 2 M20 Square Curved Washer ENA TS or 2 M20 Square Flat Washer ENA TS or 2 Safety Sign - English - Bilingual As Required Pole Numbers - - As Required Hardwood Plugs ENA TS SP Power Systems Ltd Page 140 of 182 Design Manual (SPD, SPM)

141 27.18 Figure 18 H Pole Terminal (Drawing Reference SP ) SP Power Systems Ltd Page 141 of 182 Design Manual (SPD, SPM)

142 General Assembly H Pole Terminal (Drawing Reference SP ) ITEM NUMBER DESCRIPTION ENA TS, BS or OTHER REFERENCE DRAWING NUMBER 01 2 Wood Pole ENA TS or 4 Pole Block ENA TS Type 2 SP Terminal Crossarm Member ENA TS SP Ball End Hook BS 3288 Fig 12 Ref 15/ Tension Insulator ENA TS Helical Dead End Assembly ENA TS or 10 M20 Pole Bolt (HYS) and Nut. Length to suit Pole diameter ENA TS Clause 4.2 (Grade 8.8 HYS) M20 Tie Rods ENA TS Type 2 or M20 x 60mm Assembly Bolt and Nut ENA TS Clause or 8 M20 Square Curved Washer ENA TS or 6 M20 Square Flat Washer ENA TS or 4 Safety Sign - English - Bilingual As Required Pole Numbers Foundation Brace Steelwork 1830mm centres ENA TS SP Foundation Brace Block ENA TS Type 1 SP As Required Hardwood Plugs ENA TS SP Power Systems Ltd Page 142 of 182 Design Manual (SPD, SPM)

143 27.19 Figure 19 Single Pole Double Terminal (Drawing Reference SP ) SP Power Systems Ltd Page 143 of 182 Design Manual (SPD, SPM)

144 General Assembly Single Pole Double Terminal (Drawing Reference SP ) ITEM NUMBER DESCRIPTION ENA TS, BS or OTHER REFERENCE DRAWING NUMBER 01 1 Wood Pole ENA TS or 2 Pole Block ENA TS Type 2 SP Terminal Crossarm Member ENA TS SP Crossarm Strut ENA TS SP Terminal Strap ENA TS SP Ball End Hook BS 3288 Fig 12 Ref 15/ Tension Insulator ENA TS Helical Dead End Assembly ENA TS or 6 M20 Pole Bolt (HYS) and Nut. Length to suit Pole diameter ENA TS Clause 4.2 (Grade 8.8 HYS) M20 Tie Rods ENA TS Type 2 or M20 x 60mm Assembly Bolt and Nut ENA TS Clause or 2 M20 Square Curved Washer ENA TS or 2 M20 Square Flat Washer ENA TS or 2 Safety Sign - English - Bilingual As Required Pole Numbers - - As Required Hardwood Plugs ENA TS SP Power Systems Ltd Page 144 of 182 Design Manual (SPD, SPM)

145 27.20 Figure 20 General Arrangement Intermediate Crossarm (Drawing Reference SP ) SP Power Systems Ltd Page 145 of 182 Design Manual (SPD, SPM)

146 27.21 Figure 21 General Arrangement Section Crossarm (Drawing Reference SP ) SP Power Systems Ltd Page 146 of 182 Design Manual (SPD, SPM)

147 27.22 Figure 22 General Arrangement Terminal Crossarm (Drawing Reference SP ) SP Power Systems Ltd Page 147 of 182 Design Manual (SPD, SPM)

148 27.23 Figure 23 General Arrangement Long Span Crossarm (Drawing Reference SP ) SP Power Systems Ltd Page 148 of 182 Design Manual (SPD, SPM)

149 27.24 Figure 24 General Arrangement Crossarm Strut (Drawing Reference SP ) SP Power Systems Ltd Page 149 of 182 Design Manual (SPD, SPM)

150 27.25 Figure 25 General Arrangement Long Crossarm Strut (Drawing Reference SP ) SP Power Systems Ltd Page 150 of 182 Design Manual (SPD, SPM)

151 27.26 Figure 26 General Arrangement Long Span Delta Crossarm Strut (Drawing Reference SP ) SP Power Systems Ltd Page 151 of 182 Design Manual (SPD, SPM)

152 27.27 Figure 27 General Arrangement Terminal Strap (Drawing Reference SP ) SP Power Systems Ltd Page 152 of 182 Design Manual (SPD, SPM)

153 27.28 Figure 28 General Arrangement Section Strap (Drawing Reference SP ) SP Power Systems Ltd Page 153 of 182 Design Manual (SPD, SPM)

154 27.29 Figure 29 General Arrangement Insulator Bracket (Drawing Reference SP ) SP Power Systems Ltd Page 154 of 182 Design Manual (SPD, SPM)

155 27.30 Figure 30 General Arrangement Insulator Plate (Drawing Reference SP ) SP Power Systems Ltd Page 155 of 182 Design Manual (SPD, SPM)

156 27.31 Figure 31 General Arrangement Foundation Brace Steelwork H Pole 1830mm Centres (Drawing Reference SP ) SP Power Systems Ltd Page 156 of 182 Design Manual (SPD, SPM)

157 27.32 Figure 32 General Arrangement Foundation Brace Steelwork H Pole 2500mm Centres (Drawing Reference SP ) SP Power Systems Ltd Page 157 of 182 Design Manual (SPD, SPM)

158 27.33 Figure 33 General Arrangement Stay and Foundation Blocks (Drawing Reference SP ) SP Power Systems Ltd Page 158 of 182 Design Manual (SPD, SPM)

159 27.34 Figure 34 General Arrangement Wood Brace Block Type 1 H Pole 1830mm Centres (Drawing Reference SP ) SP Power Systems Ltd Page 159 of 182 Design Manual (SPD, SPM)

160 27.35 Figure 35 General Arrangement Wood Brace Block Type 2 H Pole 2500mm Centres (Drawing Reference SP ) SP Power Systems Ltd Page 160 of 182 Design Manual (SPD, SPM)

161 27.36 Figure 36 General Arrangement H Pole Carryover Support Steelwork (Drawing Reference SP ) SP Power Systems Ltd Page 161 of 182 Design Manual (SPD, SPM)

162 27.37 Figure 37 General Arrangement H Pole Cable Cleat / Coffin Support Steelwork (Drawing Reference SP ) SP Power Systems Ltd Page 162 of 182 Design Manual (SPD, SPM)

163 27.38 Figure 38 General Arrangement H Pole Crucifix Support Steelwork (Drawing Reference SP ) SP Power Systems Ltd Page 163 of 182 Design Manual (SPD, SPM)

164 27.39 Figure 39 General Arrangement Single Pole Fuse Steelwork (Drawing Reference SP ) SP Power Systems Ltd Page 164 of 182 Design Manual (SPD, SPM)

165 27.40 Figure 40 General Arrangement Single Pole Fuse Outrigger Steelwork (Drawing Reference SP ) SP Power Systems Ltd Page 165 of 182 Design Manual (SPD, SPM)

166 27.41 Figure 41 General Arrangement H Pole Fuse Steelwork (Drawing Reference SP ) SP Power Systems Ltd Page 166 of 182 Design Manual (SPD, SPM)

167 27.42 Figure 42 General Arrangement Surge Arrester Support Steelwork (Drawing Reference SP ) SP Power Systems Ltd Page 167 of 182 Design Manual (SPD, SPM)

168 27.43 Figure 43 General Arrangement Delta H Section Strap (Drawing Reference SP ) SP Power Systems Ltd Page 168 of 182 Design Manual (SPD, SPM)

169 27.44 Figure 44 General Arrangement Terminal Bracing Strap (Drawing Reference SP ) SP Power Systems Ltd Page 169 of 182 Design Manual (SPD, SPM)

170 27.45 Figure 45 General Arrangement Terminal Bracing Strap (Drawing Reference SP ) SP Power Systems Ltd Page 170 of 182 Design Manual (SPD, SPM)

171 27.46 Figure 46 General Arrangement Long Section Strap for Long Span Delta H Pole (Drawing Reference SP ) SP Power Systems Ltd Page 171 of 182 Design Manual (SPD, SPM)

172 27.47 Figure 47 General Arrangement Heavy Construction Stay Attachment Plates (Drawing Reference SP ) SP Power Systems Ltd Page 172 of 182 Design Manual (SPD, SPM)

173 27.48 Figure 48 General Arrangement Heavy Construction Stay Attachment (Drawing Reference SP ) SP Power Systems Ltd Page 173 of 182 Design Manual (SPD, SPM)

174 27.49 Figure 49 General Arrangement Transformer Platform Steelwork for a Single Pole (Drawing Reference SP ) SP Power Systems Ltd Page 174 of 182 Design Manual (SPD, SPM)

175 27.50 Figure 50 General Assembly Transformer Platform Steelwork for a Single Pole (Drawing Reference SP ) SP Power Systems Ltd Page 175 of 182 Design Manual (SPD, SPM)

176 27.51 Figure 51 General Arrangement Transformer Platform Steelwork for an H Pole (Drawing Reference SP ) SP Power Systems Ltd Page 176 of 182 Design Manual (SPD, SPM)

177 27.52 Figure 52 General Assembly Transformer Platform Steelwork for an H Pole (Drawing Reference SP ) SP Power Systems Ltd Page 177 of 182 Design Manual (SPD, SPM)

178 27.53 Figure 53 General Arrangement Single Pole Bog Shoe (Drawing Reference SP ) SP Power Systems Ltd Page 178 of 182 Design Manual (SPD, SPM)

179 27.54 Figure 54 General Arrangement H Pole Bog Shoe (Drawing Reference SP ) SP Power Systems Ltd Page 179 of 182 Design Manual (SPD, SPM)