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SUB-02-006 Issue 6 - SPEnergyNetworks · PDF file EART-02-003 Earthing and Bonding at Secondary Substations ... enhanced fire performance characteristic. Midel Midel is a synthetic

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  • Secondary Substation Installation and

    Commissioning Specification

    SUB-02-006 Issue No. 6

    © SP Power Systems Limited Page 1 of 30

    1. SCOPE

    This document outlines SP Energy Networks installation and commissioning specification for ground mounted secondary substations and includes all transformer substations where the lower voltage is 400/230V.

    2. ISSUE RECORD

    This is a Reference document. The current version is held on the Energy Networks Intranet Document Library. It is your responsibility to ensure you work to the current version. Issue Date Issue No . Author Amendment Details June 2004 3 A.Graham Minor revisions October 2005 4 I.McFadyen Door specification revised in section 8.8 January 2007 5 A.Graham LSOH cables and Midel requirements

    added, civil requirements changed, Protection commissioning updated.

    October 2014 6 F. Berry Revised

    3. ISSUE AUTHORITY

    Author Owner Issue Authority Name: Frank Berry Title: Lead Engineer AS&NP

    Name: David Neilson Title: Substation Manager AS&NP

    Name: Donald Miller Title: Head of Asset Management

    4. REVIEW

    This is a Reference document which has a 5 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 SP Distribution & SP Manweb System Design Virtual Manuals, and the Construction Virtual Manual, but does not have a maintained distribution list. It is also published to the Internet.

  • Secondary Substation Installation and

    Commissioning Specification

    SUB-02-006 Issue No. 6

    © SP Power Systems Limited Page 2 of 30

    6. CONTENTS

    1. SCOPE ....................................................................................................................................... 1

    2. ISSUE RECORD ........................................................................................................................ 1

    3. ISSUE AUTHORITY .................................................................................................................. 1

    4. REVIEW ..................................................................................................................................... 1

    5. DISTRIBUTION .......................................................................................................................... 1

    6. CONTENTS ............................................................................................................................... 2

    7. REFERENCE AND RELATED DOCUMENTS ................... ....................................................... 3

    8. INTRODUCTION ........................................................................................................................ 3

    9. DEFINITIONS ............................................................................................................................ 4

    10. GENERAL REQUIREMENTS .............................. ..................................................................... 5

    11. UNIT SUBSTATIONS .................................. .............................................................................. 8

    12. ‘X’ TYPE - NON-UNIT SUBSTATIONS ................... .................................................................. 8

    13. INDUSTRIAL HV CUSTOMER RMU SUBSTATIONS ............ ............................................... 10

    14. INDUSTRIAL LV CUSTOMER SUBSTATIONS ................ ..................................................... 11

    15. HV CUSTOMER SWITCHBOARD SUBSTATION ................ ................................................. 12

    16. COMMISSIONING ................................................................................................................... 13

    APPENDIX 1 – DIAGRAMS ............................. .............................................................................. 16

    APPENDIX 2 - EQUIPMENT CHECK LIST ................. .................................................................. 22

    APPENDIX 3 - SUBSTATION COMMISSIONING PROGRESS CARD ....................................... 24

    APPENDIX 4 – DRAWINGS ............................. ............................................................................. 27

  • Secondary Substation Installation and

    Commissioning Specification

    SUB-02-006 Issue No. 6

    © SP Power Systems Limited Page 3 of 30

    7. REFERENCE AND RELATED DOCUMENTS

    It is important that users of the documents listed below ensure that they are in possession of the latest issues of the documents together with any amendments. Statuatory Legislation ESQ&C regulations The Electricity Safety Quality and Continuity Regulations 2002. SP Energy Networks

    SUB-02-613 Electrical Insulation Testing of HV Equipment up to 33kV ASSET-01-021 Asset Inspection and Condition Assessment Policy CAB-15-003 Handling and Installation of Cables up to and including 33kV CAB-04-009 Policy and Application Guide for 11kV Polymeric Cables EART-02-003 Earthing and Bonding at Secondary Substations

    ESDD-02-012 Design and Planning Framework for Greenfield Low Voltage Housing Estates Installations and Associated HV/LV Distribution Substations

    ESDD-01-005 Distributed Generation Connection Requirements

    SUB-03-017 General Specification for the Civil Engineering and Building Design and Construction of Secondary Substations.

    SUB-02-013 Policy and Specification for the Interface with Independent Distribution Network Operators Installations

    SWG-06-001 Approved Equipment Register - Switchgear

    8. INTRODUCTION

    This document outlines SP Energy Networks installation and commissioning specification for ground mounted secondary substations and includes all transformer substations where the lower voltage is 400/230V.

  • Secondary Substation Installation and

    Commissioning Specification

    SUB-02-006 Issue No. 6

    © SP Power Systems Limited Page 4 of 30

    9. DEFINITIONS

    For the purpose of this document the following defi nitions shall apply: Approved: Equipment which is Approved in accordance with SP Energy

    Networks documents for use or installation on the Company network. Company: Refers to SP Distribution Ltd, SP Transmission Ltd and SP Manweb

    plc. Equipment: Switchgear, transformers, cables, overhead lines, surge arresters,

    voltage transformers, current transformers, unit substations. Energisation: The application of Voltage to an item(s) of Equipment from the

    system. High Voltage: An AC voltage exceeding 1000 volts measured between the phase

    conductors. IDNO’s: Independent Distribution Network Operator ICP: Independent Connections Provider: Suitably Lloyds/National

    Electrical Registration Scheme - Accredited Contractors undertaking contestable work in the competitive connections market.

    Indoor Equipment: Equipment designed solely for installation within a building or other

    housing where the Equipment is protected against wind, rain, snow, abnormal dirt deposits, abnormal condensation and frost.

    Low Voltage: An AC voltage not exceeding 1000 volts measured between the

    phase conductors. LSOH: Low Smoke Zero Halogen – cables with this type of sheath have an

    enhanced fire performance characteristic. Midel Midel is a synthetic ester based transformer insulating fluid with

    enhanced fire performance characteristics. New: Approved Equipment which has not previously been connected to the

    system and which has been routine tested in a Manufacturing Facility with a Quality Management System in accordance with the relevant standard prior to delivery.

    SP Energy Networks: SP Power Systems Ltd, operator of network assets on behalf of the

    Company. Previously In Service: Equipment which, has previously been connected to the Company

    system and is deemed suitable for re-use in accordance with ASSET- 01-010, and has been electrically tested prior to site in accordance with SUB-02-613 where appropriate.

    Secondary substation: An assembly of High Voltage Switchgear, Transformers and LV

    Switchgear in an enclosure where the lower voltage is 400/230V.

  • Secondary Substation Installation and

    Commissioning Specification

    SUB-02-006 Issue No. 6

    © SP Power Systems Limited Page 5 of 30

    Second Hand: Equipment which has previously been energised out with the Company network.

    SP Distribution Ltd The Distribution Licence Holder for the distribution service area

    formally known as ScottishPower. SP Transmission Ltd The Transmission Licence Holder for the transmission service area

    formally known as ScottishPower. SP Manweb plc The Distribution Licence Holder for the distribution service are

    formally known as Manweb. Switching Station: A secondary substation containing only High Voltage Switchgear. Unit substation: A Unit substation comprises an 11kV/400V transformer fitted with a

    directly mounted ring main unit and an LV fuse cabinet. Other combinations of directly mounted attachments to the transformer may also be used (e.g. cable box in lieu of HV switchgear or LV fuse cabinet.)

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