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    DH INFORMATION READER BOX

    Policy Estates

    HR / Workforce Performance

    Management IM & T

    Planning Finance

    Clinical Partnership Working

    Document Purpose Best practice guidance

    ROCR Ref: 0 Gateway Ref: 7165

    Title

    Author

    Publication Date

    Target Audience

    Circulation List

    Description

    Cross Ref

    Superseded Docs

    Action Required

    Timing

    Contact Details

    0

    0

    0

    N/A

    Department of Health / Estates and Facilities Division

    HTM 06-01, Part A

    0

    HTMs 2007, 2011 and 2014

    Oct 2006

    PCT CEs, NHS Trust CEs, SHA CEs, Care Trust CEs, Foundation

    Trust CEs , PCT PEC Chairs, NHS Trust Board Chairs, Special HA

    CEs

    Department of Health libraries, House of Commons library,

    Strategic Health Authorities, UK Health Departments, Directors of

    Estates and Facilities,

    Health Technical Memorandum 06-01, Part A, provides guidance

    on the design, installation and testing of all fixed wiring and

    integral electrical equipment used for electrical services within

    healthcare premises.

    For Recipient's Use

    Health Technical Memorandum 06-01, Part A: 'Electrical services

    supply and distribution'

    LS2 7UE

    0

    0113 254 5932

    Chris Holme

    Department of Health/Estates and Facilities DivisionQuarry House, Quarry Hill

    Leeds

    0

    Feb 2007

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    Electrical servicesHealth Technical Memorandum06-01: Electrical services supply and

    distribution

    Part A: Design considerations

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    Electrical services HTM 06-01 Electrical services supply and distribution: Part A Design considerat

    Published by TSO (The Stationery Office) and available from:

    Onlinewww.tsoshop.co.uk

    Mail, Telephone, Fax & E-mailTSOPO Box 29, Norwich NR3 1GNTelephone orders/General enquiries 0870 600 5522Fax orders 0870 600 5533E-mailcustomer.services@tso.co.ukTextphone 0870 240 3701

    TSO Shops123 Kingsway, London WC2B 6PQ020 7242 6393 Fax 020 7242 6394

    16 Arthur Street, Belfast BT1 4GD028 9023 8451 Fax 028 9023 540171 Lothian Road, Edinburgh EH3 9AZ0870 606 5566 Fax 0870 606 5588

    TSO@Blackwell and other Accredited Agents

    Crown copyright 2007

    Published with the permission of the Estates andFacilities Division of the Department of Health,on behalf of the Controller of Her Majestys Stationery Office.

    This document/publication is not covered by the HMSOl k f dd d l l

    The paper used in the printing of tis 75% made from 100% de-inkedremaining 25% being mill broke an

    http://www.tsoshop.co.uk/mailto:customer.services@tso.co.ukmailto:customer.services@tso.co.ukmailto:customer.services@tso.co.ukmailto:customer.services@tso.co.ukhttp://www.tsoshop.co.uk/
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    HTM 07

    Environment &Sustainability

    HTM 08

    SpecialistServices

    HTM 01

    Decontamination

    HTM 02

    MedicaGases

    P li i d

    INTERNAT

    IONAL&

    EUROPEANSTA

    NDARDS

    IND

    S

    INDU

    STRY STANDARD

    S

    HEALT

    H SPEC IF IC DOCUM

    ENTS

    HEA

    LT HTM 00

    Electrical services HTM 06-01 Electrical services supply and distribution: Part A Design considerat

    Health Technical Memorandum 03Heating and ventilation systems

    Health Technical Memorandum 04Water systems

    Health Technical Memorandum 05Fire safety

    Health Technical Memorandum 06

    Electrical servicesHealth Technical Memorandum 07

    Environment and sustainability

    Health Technical Memorandum 08Specialist services

    Some subject areas may be further developed into topicsshown as -01, -02 etc and further referenced into Parts A,

    B etc.Example: Health Technical Memorandum 06-02 Part Awill represent:

    Electrical Services Electrical safvoltage systems

    In a similar way Health Technicawill simply represent:

    Environment and Sustainability

    All Health Technical Memorandinitial document Health Technic

    which embraces the managemenfrom previous documents and exissues.

    Some variation in style and structopic and approach of the differegroups.

    DH Estates and Facilities Divisio

    the contribution made by profesengineering consultants, healthcNHS staff who have contributed

    Figure 2 Engineering guidance

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    Health Technical Memorandum 06-01 Electricalservices supply and distribution replaces HealthTechnical Memorandum 2007 Electrical servicessupply and distribution and Health TechnicalMemorandum 2011 Emergency electrical services,and absorbs Health Technical Memorandum 2014 Abatement of electrical interference.

    This part (Part A) provides guidance for all works on thefixed wiring and integral electrical equipment used forelectrical services within healthcare premises.

    This document should be usedesign work ranging from a nmodifying an existing final sueach section will depend on thworks.

    It provides guidance to managon how European and British

    electrical safety such as the IEBS 7671, the Building RegulaElectricity at Work Regulationtheir duty of care in relation t

    Work etc Act 1974.

    Executive summary

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    Electrical services HTM 06-01 Electrical services supply and distribution: Part A Design considerat

    Main working group

    Owen Cusack Northumbria Healthcare NHS Trust

    Peter Desforges Develop

    Alan Gascoine Mayday Hospital

    Ian Hawthorn Sandwell General Hospital

    Chris Holme Department of Health Estates and FacilitiesJim Mellish Skanska UK PLC

    John Murray Bender UK

    Nigel Porter Welsh Health Estates

    Mike Ralph Great Ormond Street Hospital

    Steve Wilson Faber Maunsell AECOM

    Subject working groups

    Switchgear and Protection Schneider Electric

    Containment Systems

    Dick Shelly Skanska UK PLC

    Andrew Galloway Great Ormond Street Hospital

    Isolated Power SuppliesJohn Murray Bender UK

    Electromagnetic Compatibility

    Alwyn Finney ERA Technology

    Acknowledgements

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    Contents

    PrefaceExecutive summary

    AcknowledgementsChapter 1 Scope of Health Technical Memorandum 06-01

    Abbreviations and definitionsChapter 2 Introduction

    OverviewHow to read this Health Technical Memorandum

    Chapter 3 Initial considerations Sources of supplyResilienceEssential/non-essential suppliesPrimary sources of supplySecondary main sources of supply generationTariff negotiations and private generationSupply voltagesDesign of installations for growth and change

    Assessment of existing electrical systemsGreenfield siteNew-build on existing siteNew equipment on existing site

    Load profileDiversity factorsConsideration for EMC requirements

    Roles and responsibilitiesAccess for maintenanceCommissioning procedures

    Connection to the DNOConnection to the healthcare site networkSupply from the DNO

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    Electrical services HTM 06-01 Electrical services supply and distribution: Part A Design considerat

    Category 2 Building services safety and securityCategory 3 Building services environmental controlCategory 4 Medical support services

    Electrical infrastructureResilienceElectrical infrastructure system selection

    Chapter 5 Power quality Power factor correction

    Located at the intake pointLocated at sub-main distribution boardsLocated on the electrical equipment

    HarmonicsLocated at the intake pointLocated at sub-main distribution boardsLocated on the electrical equipment

    Voltage surge protectionChapter 6 Distribution strategy

    Design for resilienceSupply connectionsRisk of transformer failuresRisk of generator failuresOther reasons for failure of electricity supply

    Distribution system high voltageHV network one radial circuit with one substation onlyHV network one radial circuit with three substations

    HV network three radial circuits each with one substationHV ring network ring with four substations

    Primary and secondary distribution systemsPrimary supply unified infrastructurePrimary and secondary supply unified and segregated infrastrPrimary and secondary supply unified and dual-unified infraDual primary and dual secondary supply unified and dual-unDual primary and dual HV secondary supply dual-unified in

    Dual primary and dual LV secondary supply dual-unified infFinal circuits

    Fixed equipmentPower outletsLighting circuits

    Chapter 7 Primary power distribution centres

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    LV switchroomsLocationConstruction

    Access and egressLayoutFire precautionsEnvironmental requirementsEquipment and notices required to be provided

    Chapter 8 Secondary power centres and plant Secondary power general arrangements

    Photovoltaic power secondary power sourceWind turbine power source

    General secondary power plant locationEssential power capacityEssential and e