Bsi bs en 60384 26 1 2010

Licensed copy: Bradford University, University of Bradford, Version correct as of 19/03/2012 17:50, (c) The British Standards Institution 2012 BS EN 60384-26-1:2010 BSI Standards Publication Fixed capacitors for use in electronic equipment Part 26-1: Blank detail specification — Fixed aluminum electrolytic capacitors with conductive polymer solid electrolyte — Assessment level EZ NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAW raising standards worldwide™ BRITISH STANDARD BS EN 60384-26-1:2010 Licensed copy: Bradford University, University of Bradford, Version correct as of 19/03/2012 17:50, (c) The British Standards Institution 2012 National foreword This British Standard is the UK implementation of EN 60384-26-1:2010 It is identical to IEC 60384-26-1:2010 The UK participation in its preparation was entrusted to Technical Committee EPL/40X, Capacitors and resistors for electronic equipment A list of organizations represented on this committee can be obtained on request to its secretary This publication does not purport to include all the necessary provisions of a contract Users are responsible for its correct application © BSI 2010 ISBN 978 580 65140 ICS 31.060.50 Compliance with a British Standard cannot confer immunity from legal obligations This British Standard was published under the authority of the Standards Policy and Strategy Committee on 31 October 2010 Amendments/corrigenda issued since publication Date Text affected EUROPEAN STANDARD EN 60384-26-1 Licensed copy: Bradford University, University of Bradford, Version correct as of 19/03/2012 17:50, (c) The British Standards Institution 2012 NORME EUROPÉENNE October 2010 EUROPÄISCHE NORM ICS 31.060.50 English version Fixed capacitors for use in electronic equipment Part 26-1: Blank detail specification Fixed aluminum electrolytic capacitors with conductive polymer solid electrolyte Assessment level EZ (IEC 60384-26-1:2010) Condensateurs fixes utilisés dans les équipements électroniques Partie 26-1: Spécification particulière cadre Condensateurs fixes électrolytiques en aluminium electrolyte solide en polymère conducteur Niveau d'assurance de la qualité EZ (CEI 60384-26-1:2010) Festkondensatoren zu Verwendung in Geräten der Elektronik Teil 26-1: Vordruck für Bauartspezifikation Aluminium-Elektrolyt-Kondensatoren mit leitfähigem PolymerfestkörperElektrolyten Qualitätsbewertungsstufe EZ (IEC 60384-26-1:2010) This European Standard was approved by CENELEC on 2010-10-01 CENELEC members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the Central Secretariat or to any CENELEC member This European Standard exists in three official versions (English, French, German) A version in any other language made by translation under the responsibility of a CENELEC member into its own language and notified to the Central Secretariat has the same status as the official versions CENELEC members are the national electrotechnical committees of Austria, Belgium, Bulgaria, Croatia, Cyprus, the Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, the Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and the United Kingdom CENELEC European Committee for Electrotechnical Standardization Comité Européen de Normalisation Electrotechnique Europäisches Komitee für Elektrotechnische Normung Management Centre: Avenue Marnix 17, B - 1000 Brussels © 2010 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members Ref No EN 60384-26-1:2010 E BS EN 60384-26-1:2010 EN 60384-26-1:2010 -2- Licensed copy: Bradford University, University of Bradford, Version correct as of 19/03/2012 17:50, (c) The British Standards Institution 2012 Foreword The text of document 40/2053/FDIS, future edition of IEC 60384-26-1, prepared by IEC TC 40, Capacitors and resistors for electronic equipment, was submitted to the IEC-CENELEC parallel vote and was approved by CENELEC as EN 60384-26-1 on 2010-10-01 Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights CEN and CENELEC shall not be held responsible for identifying any or all such patent rights The following dates were fixed: – latest date by which the EN has to be implemented at national level by publication of an identical national standard or by endorsement (dop) 2011-07-01 – latest date by which the national standards conflicting with the EN have to be withdrawn (dow) 2013-10-01 Annex ZA has been added by CENELEC Endorsement notice The text of the International Standard IEC 60384-26-1:2010 was approved by CENELEC as a European Standard without any modification -3- BS EN 60384-26-1:2010 EN 60384-26-1:2010 Licensed copy: Bradford University, University of Bradford, Version correct as of 19/03/2012 17:50, (c) The British Standards Institution 2012 Annex ZA (normative) Normative references to international publications with their corresponding European publications The following referenced documents are indispensable for the application of this document For dated references, only the edition cited applies For undated references, the latest edition of the referenced document (including any amendments) applies NOTE When an international publication has been modified by common modifications, indicated by (mod), the relevant EN/HD applies Publication Year Title IEC 60068-2-20 2008 Environmental testing EN 60068-2-20 Part 2-20: Tests - Test T: Test methods for solderability and resistance to soldering heat of devices with leads 2008 IEC 60384-1 2008 Fixed capacitors for use in electronic equipment Part 1: Generic specification EN 60384-1 2009 IEC 60384-26 2010 Fixed capacitors for use in electronic equipment Part 26: Sectional specification - Fixed aluminium electrolytic capacitors with conductive polymer solid electrolyte EN 60384-26 2010 EN/HD Year BS EN 60384-26-1:2010 –4– 60384-26-1 © IEC:2010 Licensed copy: Bradford University, University of Bradford, Version correct as of 19/03/2012 17:50, (c) The British Standards Institution 2012 CONTENTS General data 1.1 Recommended method(s) of mounting (to be inserted) 1.2 Dimensions .6 1.3 Rating and characteristics .7 1.4 Normative references 1.5 Marking 1.6 Ordering information 1.7 Certified records of released lots .8 1.8 Additional information (not for inspection) 1.9 Other requirements for generic or sectional specifications .8 Inspection requirements 2.1 Procedures 2.1.1 Qualification approval 2.1.2 Quality conformance inspection Bibliography 17 Table – Case size reference and dimensions .6 Table – Values of capacitance and of voltage related to case sizes .7 Table – Characteristics Table – Other requests (other characteristics) .8 Table – Test schedule for quality conformance inspection BS EN 60384-26-1:2010 60384-26-1 © IEC:2010 –5– Licensed copy: Bradford University, University of Bradford, Version correct as of 19/03/2012 17:50, (c) The British Standards Institution 2012 FIXED CAPACITORS FOR USE IN ELECTRONIC EQUIPMENT – Part 26-1: Blank detail specification – Fixed aluminium electrolytic capacitors with conductive polymer solid electrolyte – Assessment level EZ Blank detail specification A blank detail specification is a supplementary document to the sectional specification and contains requirements for style and layout and minimum content of detail specifications Detail specifications not complying with these requirements may not be considered as being in accordance with IEC specification nor shall they so be described In the preparation of detail specifications the contents of 1.4 of the sectional specification shall be taken into account The numbers between brackets on the first page correspond to the following information which shall be inserted in the position indicated Identification of the detail specification [1] The “International Electrotechnical Commission” or the National Standards Organization under whose authority the detail specification is drafted [2] The IEC or National Standards number of the detail specification, date of issue and any further information required by the national system [3] The number and date of issue of the IEC or National Generic Specification [4] The number of the IEC or National blank detail specification Identification of the capacitor [5] A short description of the type of capacitor [6] Information on typical construction (If applicable) [7] Outline drawing with main dimensions which are of importance for interchange ability and / or reference to the national or international documents for outlines Alternatively, this drawing may be given in an appendix to the detail specification [8] Application or group of applications covered and / or assessment level [9] Reference data on the most important properties, to allow comparison between the various capacitor types BS EN 60384-26-1:2010 Licensed copy: Bradford University, University of Bradford, Version correct as of 19/03/2012 17:50, (c) The British Standards Institution 2012 –6– 60384-26-1 © IEC:2010 [1] [2] ELECTRONIC COMPONENTS OF ASSESSED [4] QUALITY IN ACCORDANCE WITH: IEC 60384-26-1 [3] [5] Aluminium electrolytic capacitors with conductive polymer solid electrolyte Outline drawing: (see Table 1) (… angle projection) [7] [6] [8] Assessment level(s): EZ Information on the availability of components qualified to this detail specification is given in the qualified product list [9] 1.1 General data Recommended method(s) of mounting (to be inserted) See IEC 60384-26, 1.4.2 1.2 Dimensions Table – Case size reference and dimensions Dimensions in millimeters Case size reference L W H d NOTE When there is no case-size reference, decline Table and give the dimensions in Table as Table NOTE Indicate the dimensions as maximum dimension or as nominal dimensions with tolerance BS EN 60384-26-1:2010 60384-26-1 © IEC:2010 Licensed copy: Bradford University, University of Bradford, Version correct as of 19/03/2012 17:50, (c) The British Standards Institution 2012 1.3 –7– Rating and characteristics Ratings and characteristics are as listed below – Nominal capacitance range (see Table 2) – Tolerance on nominal capacitance – Rated voltage (see Table 2) – Climatic category – Rated temperature – Rated ripple current (see Table 3) – Tangent of loss angle (see Table 3) – Leakage current (see Table 3) – Equivalent series resistance (see Table 3) – Reverse voltage (if required in the detail specification) Table – Values of capacitance and of voltage related to case sizes Rated voltage Nominal capacitance Case size Case size Case size Case size Case size Table – Characteristics 1.4 UR CN Tangent of loss angle at … ºC, Hz Leakage current at … ºC Equivalent series resistance at … ºC, … Hz Rated ripple current at … ºC, … Hz V μF Hz μA Ω mA or A Normative references The following referenced documents are indispensable for the application of this document For dated references, only the edition cited applies For undated references, the latest edition of the referenced document (including any amendments) applies IEC 60068-2-20:2008, Environmental testing – Part 2-20: Tests – Test T – Test methods for solderability and resistance to soldering heat of devices with leads IEC 60384-1:2008, Fixed capacitors for use in electronic equipment – Part 1: Generic specification IEC 60384-26:– Fixed capacitors for use in electronic equipment – Part 26: Sectional specification – Fixed aluminium electrolytic capacitors with conductive polymer solid electrolyte ————————— To be published BS EN 60384-26-1:2010 –8– Licensed copy: Bradford University, University of Bradford, Version correct as of 19/03/2012 17:50, (c) The British Standards Institution 2012 1.5 60384-26-1 © IEC:2010 Marking The marking of the capacitor and the package shall be in accordance with the requirements of IEC 60384-26, 1.6 NOTE The details of the marking of the component and package should be given in full in the detail specification 1.6 Ordering information Orders for capacitors covered by this specification shall contain, in clear or in coded form, the following minimum information: a) nominal capacitance; b) tolerance on nominal capacitance; c) rated d.c voltage; d) issue number and edition of the detail specification and type of capacitors 1.7 Certified records of released lots Required / not required NOTE Clearly state a necessity for customer requests 1.8 Additional information (not for inspection) NOTE Clearly state a necessity for additional information 1.9 Other requirements for generic or sectional specifications NOTE Other requirements should be specified to those that are absolutely necessary See Table Table – Other requests (other characteristics) This table is to be used for defining characteristics which are additional to, or more severe than, those given in the sectional specification Inspection requirements 2.1 2.1.1 Procedures Qualification approval For qualification approval, the procedures shall be in accordance with IEC 60384-26, 3.4 2.1.2 Quality conformance inspection For quality conformance inspection, the test schedule (Table 5) includes sampling, periodicity, severities and requirements The formation of inspection lots is covered by IEC 60384-26, 3.5.1 BS EN 60384-26-1:2010 60384-26-1 © IEC:2010 –9– Licensed copy: Bradford University, University of Bradford, Version correct as of 19/03/2012 17:50, (c) The British Standards Institution 2012 Table – Test schedule for quality conformance inspection Subclause number and test a D or ND b Test condition a Sample number and criteria c IL n Requirements a c Group A inspection (each lot) Subgroup A0 100 % d ND See detail specification 4.22 High surge current 4.4.1 Leakage current Protective resistor: 000 Ω 0,2 C N U R (µA) or 500 µA (whichever is greater) 4.4.2 Capacitance Frequency: … Hz Within specified tolerance Bias voltage: … V 4.4.3 Tangent of loss angle (tan δ) Frequency: … Hz 4.4.4 Equivalent series resistance (ESR) Frequency: 100 kHz Subgroup A1 See Table Bias voltage: … V ND See Table S-3 f 4.3 Visual inspection Subgroup A2 See IEC 60384-26, 4.3.2 ND S-3 f 4.3 Dimensions (detail) e Group B inspection See Table S-3 D f (each lot) 4.7 Solderability Test method and severity: As in IEC 60068-2-20, Test Ta, method 4.7.2 Final measurement Visual inspection 4.18 Solvent resistance of marking g Solvent: 2-propanol See 4.7.2 Solvent temp: 23 ºC ± ºC Method: Rubbing material: cotton wool Recovery time: a Subclause numbers of tests and performance requirements refer to IEC 60384-26 and Clause of this specification b In this table: D = destructive, ND = non-destructive c In this table: IL = inspection level, n = sample size, c = acceptance criterion (permitted number of nonconforming items) The permissible number of non-conforming items indicates acceptance criteria In case non-conforming item(s) is equal or less than the number, this lot shall be accepted d 100 % testing shall be followed by re-inspection by sampling in order to monitor outgoing qualify level by nonconfirming items per million The sampling level shall be established by each manufacturer For the calculation of parts per million values, any parametric failure shall be counted as a non-conforming item If one or more non-conforming items occur in a sample, this lot shall be rejected e This test may be replaced by in-production testing if the manufacturer installs statistical process control (SPC) on dimensional measurements or other mechanisms to avoid parts exceeding the limits f Inspection levels are selected from IEC 60410 g If required in the detail specification BS EN 60384-26-1:2010 – 10 – 60384-26-1 © IEC:2010 Licensed copy: Bradford University, University of Bradford, Version correct as of 19/03/2012 17:50, (c) The British Standards Institution 2012 Table (continued) Subclause number and test a Subgroup C1A D or ND b Test condition a D 4.3 Dimension (detail) Sample number and criteria c p n c 12 Requirements a See detail specification 4.5.1 Initial measurement Capacitance Visual inspection No visible damage 4.5 Terminal strength Method and Criteria See IEC 60384-1, 4.13 Tension test Bending test 4.6 Resistance to soldering heat Non-preconditioning (Drying) 4.6.1 Initial measurement Capacitance 4.6.2 Test Test method and severity: As in IEC 60068-2-20, Test Tb, method 4.6.3 Final measurement Visual inspection No visible damage Legible marking Leakage current d See 4.4.1.2 Capacitance See detail specification Tangent of loss angle (tan δ ) See 4.4.3 Equivalent series resistance (ESR) See detail specification Solvent: 2-propanol Solvent temp: 23 ºC ± ºC Method: Recovery time: No visible damage Legible marking 4.17 Solvent resistance of components (If required in the detail specification) Subgroup C1B D 4.7 Solderability Test method: Solder bath method (See IEC 60068-2-20 Test Ta, Method 1) Non-preconditioning (Aging) 4.7.2 Final measurement Visual inspection 4.18 Solvent resistance of marking (If required in the detail specification) Solvent: 2-propanol Solvent temp: 23 ºC ± ºC Method: Rubbing material: cotton wool Recovery time: See 4.7.2 BS EN 60384-26-1:2010 60384-26-1 © IEC:2010 – 11 – Licensed copy: Bradford University, University of Bradford, Version correct as of 19/03/2012 17:50, (c) The British Standards Institution 2012 Table (continued) Subclause number and test a Subgroup C1B (continued) D or ND b Test condition a D Sample number and criteria c p n c 12 Requirements a 4.8 Rapid change of temperature 4.8.1 Initial measurement Capacitance 4.8.2 Test T A = lower category temperature T B = upper category temperature Five cycles Duration t = 30 Recovery: h to h 4.8.3 Final measurement Leakage current d As in 4.4.1.2 Capacitance | Δ C/C| ≤ ± 10 % of the value measured in 4.8.1 Tangent of loss angle (tan δ ) As in 4.4.3 4.9 Vibration For mounting method, see detail specification Frequency range: 10 Hz to 55Hz Amplitude: 0,75 mm or acceleration 100 m/s (whichever is the less severe) Total duration: h (2 h for each of three(X, Y, and Z) axis) 4.9.2 Final measurement 4.10 Shock (or Bump, see 4.11) Visual inspection No visible damage Legible marking Capacitance | Δ C/C| ≤ ± 10 % of the value measured in 4.8.1 For mounting method see detail specification Number of shocks: for each ( X,Y and Z) axis and both directions Acceleration: 500 m/s Duration of pulse: 11 ms BS EN 60384-26-1:2010 – 12 – 60384-26-1 © IEC:2010 Licensed copy: Bradford University, University of Bradford, Version correct as of 19/03/2012 17:50, (c) The British Standards Institution 2012 Table (continued) Subclause number and test a Subgroup C1B (continued) D or ND b Test condition a D 4.10.2 Final measurement 4.11 Bump (or Shock, see 4.10) Sample number and criteria c p n c 12 Requirements a Visual inspection No visible damage Legible marking Capacitance | Δ C/C| ≤ ± 10 % of the value measured in 4.8.1 For mounting method see detail specification Number of bumps: 000 Acceleration: 400 m/s Duration of pulse: ms 4.11.2 Final measurement Subgroup C1 Visual inspection No visible damage Legible marking Capacitance | Δ C/C| ≤ ± 10 % of the value measured in 4.8.1 D 24 4.12 Climatic sequence 4.12.1 Initial measurement Capacitance 4.12.2 Dry heat Temperature: upper category temperature Duration: 16 h 4.12.3 Damp heat, cyclic, Test Db, first cycle 4.12.4 Cold Temperature: lower category temperature Duration: h 4.12.5 Damp heat, cyclic, Test Db, remaining cycles Recovery: h to h 4.12.7 Final measurement Visual inspection No visible damage Legible marking Leakage current d As in 4.4.1.2 Capacitance | Δ C/C| ≤ ± 20 % of the value measured in 4.12.1 Tangent of loss angle ≤1,5 times the limit of 4.4.3.2 BS EN 60384-26-1:2010 60384-26-1 © IEC:2010 – 13 – Licensed copy: Bradford University, University of Bradford, Version correct as of 19/03/2012 17:50, (c) The British Standards Institution 2012 Table (continued) Subclause number and test a Subgroup C2 D or ND b Test condition a D 4.13 Damp heat, steady state Test term: 21 days 4.13.1 Initial measurement Capacitance Sample number and criteria c p n c 24 Visual inspection 4.13.2 Test Requirements a ≤1,5 times the limit of 4.12.1 No visible damage Legible marking Temperature: 40 °C± °C Relative humidity: (93 ± 3) % Duration: 21 days 4.13.3 Final measurements Subgroup C3 Leakage current ≤5 times the limit of initial specification Capacitance See detail specification Tangent of loss angle ≤1,5 times the limit of initial specification D 24 4.14 Endurance 4.14.1 Initial measurement 4.14.2 Test Capacitance Duration: 000 h Temperature: upper category temperature Applied voltage: rated voltage Recovery: h to h 4.14.3 Final measurement Visual inspection No visible damage Legible marking Leakage current As in 4.4.1.2 Capacitance | Δ C/C| ≤ ± 20 % of the value measured in 4.14.1 Tangent of loss angle ≤1,5 times the limit of 4.4.3.2 Equivalent series resistance (ESR) ≤2,0 times the limit of 4.4.4.2 BS EN 60384-26-1:2010 – 14 – 60384-26-1 © IEC:2010 Licensed copy: Bradford University, University of Bradford, Version correct as of 19/03/2012 17:50, (c) The British Standards Institution 2012 Table (continued) Subclause number and test a Subgroup C4 D or ND b Test condition a D Sample number and criteria c p n c 12 12 Requirements a 4.19 Storage at high temperature 4.19.1 Initial measurement Capacitance 4.19.2 Test Duration: 96 h ± h Temperature: upper category temperature Recovery: ≥16 h 4.19.3 Final measurement Visual inspection No visible damage Legible marking Leakage current d As in 4.4.1.2 Capacitance | Δ C/C| ≤ ± % of the value measured in 4.19.1 Tangent of loss angle As in 4.4.3 4.15 Surge 4.15.1 Initial measurement Capacitance 4.15.2 Test Number of cycles: 000 Temperature: … °C Charge voltage: 1,15 UR Protective resistance: 000 Ω Duration of charge: 30 s Duration of no-load: 30 s 4.15.3 Final measurement Visual inspection No visible damage Legible marking Leakage current d As in 4.4.1.2 Capacitance | Δ C/C| ≤ ± 15 % of the value measured in 4.15.1 Tangent of loss angle As in 4.4.3 BS EN 60384-26-1:2010 60384-26-1 © IEC:2010 – 15 – Licensed copy: Bradford University, University of Bradford, Version correct as of 19/03/2012 17:50, (c) The British Standards Institution 2012 Table (continued) Subclause number and test a 4.16 Reverse voltage (If required in the detail specification) D or ND b Test condition a D 4.16.1 Initial measurement Capacitance 4.16.2 Test Perform a) followed by b) 4.16.3 Final measurement Subgroup C5 4.20 Characteristics at high and low temperature a) Temperature: upper category temperature Charge voltage: 0,15 U c (reverse voltage) Duration: 125 h b) Temperature: upper category temperature Charge voltage: U c (reverse voltage) Duration: 125 h Sample number and criteria c p n c 12 12 Requirements a Leakage current As in 4.4.1.2 Capacitance | Δ C/C| ≤ ± 10 % of the value measured in 4.16.1 Tangent of loss angle As in 4.4.3 D 12 The capacitors shall be measured at each temperature step Step 1: 20 ºC Capacitance (if required in the detail specification) For use as reference value Step 2: lower category temperature Capacitance (if required in the detail specification) | Δ C/C| ≤ ±  % of the value measured in Step BS EN 60384-26-1:2010 – 16 – 60384-26-1 © IEC:2010 Licensed copy: Bradford University, University of Bradford, Version correct as of 19/03/2012 17:50, (c) The British Standards Institution 2012 Table (continued) Subclause number and test a Subgroup C5 (continued) D or ND b D Test condition a Equivalent series resistance (ESR) (if required in the detail specification) Sample number and criteria c p n c 12 Requirements a ≤2 times the limit of 4.4.4.2 Step 3: upper category temperature Leakage current ≤12,5 times the limit of 4.4.1.2 Capacitance (if required in the detail specification) | Δ C/C| ≤ ± 20 % of the value measured in Step Equivalent series resistance (ESR) (if required in the detail specification) ≤2 times the limit of 4.4.4.2 4.21 Charge and discharge (if required in detail specification) 4.21.1 Initial measurement Capacitance 4.21.2 Test Temperature: … ºC Number of cycles: 10 Duration of charge: 0,5 s Duration of discharge: 0,5 s 4.21.3 Final inspection Visual inspection No visible damage Legible marking Leakage current d As in 4.4.1.2 Capacitance | Δ C/C| ≤ ± 20 % of the value measured in 4.21.1 Tangent of loss angle ≤1,5 times the limit of 4.4.3.2 Equivalent series resistance (ESR) ≤2 times the limit of 4.4.4.2 a Subclause numbers of tests and performance requirements refer to IEC 60384-26 and Clause of this specification b In this table: D = destructive, ND = non-destructive c In this table: p = periodicity (in months), n = sample size, c = acceptance criteria (permitted number of nonconforming The permissible number of non-conforming items indicates acceptance criteria In case non-conforming item(s) is equal or less than the number, this lot shall be accepted d Apply pre-conditioning specified in IEC 60384-26, 4.1 Licensed copy: Bradford University, University of Bradford, Version correct as of 19/03/2012 17:50, (c) The British Standards Institution 2012 BS EN 60384-26-1:2010 60384-26-1 © IEC:2010 – 17 – Bibliography IEC 60410, Sampling plans and procedures for inspection by attributes This page deliberately left blank Licensed copy: Bradford University, University of Bradford, Version correct as of 19/03/2012 17:50, (c) The British Standards Institution 2012 This page deliberately left blank Licensed copy: Bradford University, University of Bradford, Version correct as of 19/03/2012 17:50, (c) The British Standards Institution 2012 Licensed copy: Bradford University, University of Bradford, Version correct as of 19/03/2012 17:50, (c) The British Standards Institution 2012 British Standards Institution (BSI) BSI is the independent national body responsible for preparing British Standards and other standards-related publications, information and services It presents the UK view on standards in Europe and at the international level It is incorporated by Royal Charter Revisions Information on standards British Standards are updated by amendment or revision Users of British Standards should make sure that they possess the latest amendments or editions It is the constant aim of BSI to improve the quality of our products and services We would be grateful if anyone finding an inaccuracy or ambiguity while using this British Standard would inform the Secretary of the technical committee responsible, the identity of which can be found on the inside front cover Tel: +44 (0)20 8996 9001 Fax: +44 (0)20 8996 7001 BSI provides a wide range of information on national, European and international standards through its Knowledge Centre BSI offers Members an individual updating service called PLUS which ensures that subscribers automatically receive the latest editions of standards Tel: +44 (0)20 8996 7669 Fax: +44 (0)20 8996 7001 Email: plus@bsigroup.com Buying standards You may buy PDF and hard copy versions of standards directly using a credit card from the BSI Shop on the website www.bsigroup.com/shop In addition all orders for BSI, international and foreign standards publications can be addressed to BSI Customer Services Tel: +44 (0)20 8996 9001 Fax: +44 (0)20 8996 7001 Email: orders@bsigroup.com In response to orders for international standards, it is BSI policy to supply the BSI implementation of those that have been published as British Standards, unless otherwise requested Tel: +44 (0)20 8996 7004 Fax: +44 (0)20 8996 7005 Email: knowledgecentre@bsigroup.com Various BSI electronic information services are also available which give details on all its products and services Tel: +44 (0)20 8996 7111 Fax: +44 (0)20 8996 7048 Email: info@bsigroup.com BSI Subscribing Members are kept up to date with standards developments and receive substantial discounts on the purchase price of standards For details of these and other benefits contact Membership Administration Tel: +44 (0)20 8996 7002 Fax: +44 (0)20 8996 7001 Email: membership@bsigroup.com Information regarding online access to British Standards via British Standards Online can be found at www.bsigroup.com/BSOL Further information about BSI is available on the BSI website at www.bsigroup.com/standards Copyright Copyright subsists in all BSI publications BSI also holds the copyright, in the UK, of the publications of the international standardization bodies Except as permitted under the Copyright, Designs and Patents Act 1988 no extract may be reproduced, stored in a retrieval system or transmitted in any form or by any means – electronic, photocopying, recording or otherwise – without prior written permission from BSI This does not preclude the free use, in the course of implementing the standard of necessary details such as symbols, and size, type or grade designations If these details are to be used for any other purpose than implementation then the prior written permission of BSI must be obtained Details and advice can be obtained from the Copyright & Licensing Manager Tel: +44 (0)20 8996 7070 Email: copyright@bsigroup.com BSI Group Headquarters 389 Chiswick High Road London W4 4AL UK Tel +44 (0)20 8996 9001 Fax +44 (0)20 8996 7001 www.bsigroup.com/standards raising standards worldwide™