1、BRITISH STANDARDHousehold and similar electrical appliances Safety Part 2-21: Particular requirements for storage water heatersICS 91.140.65 BS EN60335-2-21:2003+A2:2008Incorporating corrigendaMarch 2007 and October 2007BS EN 60335-2-21: 2003+A2:2008Incorporating corrigenda March 2007, October 2007
2、and October 2010BS EN 60335-2-21:2003+A2:2008ISBN 978 0 580 73232 4Amendments/corrigenda issued since publicationAmd. No. Date Comments15609 24 May 2005 See national foreword17192 Corrigendm No. 129 June 2007 Changes to 3.103 Note 1 and 3.105 Note 117503 Corrigendm No. 231 January 2008 In the EN for
3、eword the paragraph following Note 2 has been replaced30 April 2009 Implementation of IEC amendment 2:2008 with CENELEC endorsement A2:200831 May 2014 Implementation of CENELEC corrigendum October 2010: clause 22.102 added to Annex ZAThis British Standard, was published under the authority of the St
4、andards Policy and Strategy Committee on 14 April 2003 The British Standards Institution 2014. Published by BSI Standards Limited 2014National forewordThis British Standard is the UK implementation of EN 60335-2-21:2003+A2:2008, incorporating corrigenda October 2007 and October 2010. It is identical
5、 to IEC 60335-2-21:2002, incorporating amendments 1:2004 and 2:2008 and corrigendum March 2007. It supersedes BS EN 60335-2-21:2003+A1:2005 which is withdrawn.The start and finish of text introduced or altered by amendment is indicated in the text by tags. Tags indicating changes to IEC text carry t
6、he number of the IEC amendment. For example, text altered by IEC amendment 1 is indicated by .The UK participation in its preparation was entrusted by Technical Committee CPL/61, Safety of household and similar electrical appliances, to Subcommittee CPL/61/7, Safety of electrical appliances - Heated
7、 appliance group.A list of organizations represented on this subcommittee 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.Compliance with a British Standard cannot c
8、onfer immunity from legal obligations.EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM CENELEC European Committee for Electrotechnical Standardization Comit Europen de Normalisation Electrotechnique Europisches Komitee fr Elektrotechnische Normung Central Secretariat: rue de Stassart 35, B - 1050 B
9、russels 2003 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members. Ref. No. EN 60335-2-21:2003 E ICS 91.140.65; 13.120 Supersedes EN 60335-2-21:1999 + A1:2000 + A11:2002 + A12:2002English version Household and similar electrical appliances - Safety
10、Part 2-21: Particular requirements for storage water heaters (IEC 60335-2-21:2002) Appareils lectrodomestiques et analogues - Scurit Partie 2-21: Rgles particulires pour les chauffe-eau accumulation (CEI 60335-2-21:2002) Sicherheit elektrischer Gerte fr den Hausgebrauch und hnliche Zwecke Teil 2-21:
11、 Besondere Anforderungen fr Wassererwrmer (Warmwasserspeicher und Warmwasserboiler) (IEC 60335-2-21:2002)This European Standard was approved by CENELEC on 2003-03-01.CENELEC membersare bound tocomply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this EuropeanSta
12、ndard thestatusofanational standard without any alteration.Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the Central Secretariatortoany CENELEC member.This European Standard exists in threeofficial versions (English,French, Germa
13、n).Aversion in any otherlanguage made by translation under the responsibility of aCENELEC member into its own language and notified to the Central Secretariathas the same status as the official versions.CENELEC members are the national electrotechnical committees ofAustria, Belgium,Cyprus, CzechRepu
14、blic, Denmark, Estonia, Finland, France, Germany,Greece, Hungary,Iceland, Ireland, Italy,Latvia,Lithuania, Luxembourg, Malta, Netherlands,Norway,Poland, Portugal, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom. Incorporating corrigendum October 2007EN 60335-2-21:2003+A2November 20
15、08Incorporating corrigenda October 2007 and October 2010Foreword The textofdocument 61/2135/FDIS, future fifth edition of IEC 60335-2-21, prepared by the IEC Technical Committee 61, was submitted to the IEC-CENELEC parallel vote. As a result of the Kista meeting of CENELEC TC 61 in May 2002, a draft
16、 amendment prAA containing the relevant existing common modifications was submitted to the formal vote. The texts of the FDIS and the prAA were approved by CENELEC as a new edition of EN 60335-2-21 on 2003-03-01. This European Standard replaces EN 60335-2-21:1999 + A1:2000 + A11:2002 + A12:2002. The
17、 following dates are applicable: -latestdate by which the EN has to be implemented at national level by publication of an identical national standard or by endorsement (dop) 2004-03-01 -date on which national standardsconflicting with the EN have to be withdrawn (dow)2006-03-01 This part 2 has to be
18、 used in conjunction with EN 60335-1, Household and similar electrical appliances Safety Part1: General requirements.It was established on the basis of the 2002 edition of that standard. Amendments and revisions of Part1 have also to be taken into account and the dates when such changes become appli
19、cable will be stated in the relevant amendment or revision of Part1. This part 2 supplements or modifiesthe corresponding clauses of EN 60335-1, so asto convert it into the European Standard: Safety requirements forelectric storage water heaters.When a particular subclause of Part1 isnot mentioned i
20、n this part 2, that subclause applies as farasisreasonable. When this standard states “addition“, “modification“ or “replacement“, the relevant textofPart1 isto be adapted accordingly.NOTE 1 The following numbering system is used:- subclauses,tables and figures that are numbered starting from 101 ar
21、e additional to those in Part 1;- unlessnotes are in a new subclause or involve notes in Part 1, they are numbered starting from 101, including those in a replaced clause or subclause;- additional annexes are lettered AA, BB, etc.;- subclauses,notes and annexes that are additional to those in the IE
22、C standard are prefixed with the letter Z.NOTE 2 The following print types are used:- requirements:in roman type; - testspecifications: in italic type;- notes:in smallroman type.Words in bold in the text are defined in Clause 3. When a definition concerns an adjective, the adjective and the associat
23、ed noun are also in bold.Special national conditions causing a deviation from this European Standard are listed in Annex ZA andare in addition to those in EN 60335-1. National deviations from this European Standard are listed in Annex ZB and are in addition to those in EN 60335-1. _ Page 2BS EN 6033
24、5221:2003+A2:2008BS EN 60335-2-21:2003+A2:2008EN 60335-2-21:2003+A2:2008Introduction An investigation by CENELEC TC 61 has shown that all risksfromproducts within the scope of thisstandard are fully covered by the Low Voltage Directive, 73/23/EEC. Forproducts having mechanical moving parts, a risk a
25、ssessment in accordance with the Machinery Directive, 98/37/EC, has shown that the risksare mainlyofelectrical origin and consequently this directive is not applicable. However,the relevant essential safety requirements of the MachineryDirective are covered by this standard togetherwith the principa
26、l objectives of the Low Voltage Directive. _ Endorsement notice The textofthe International Standard IEC 60335-2-21:2002 wasapproved by CENELEC as a European Standard with agreed common modifications. Foreword to amendment A1The textofdocument 61/2683/FDIS, future amendment 1 to IEC 60335-2-21:2002,
27、 prepared by the IEC Technical Committee 61, Safety of household and similar electrical appliances, wassubmitted to the IEC-CENELEC parallel vote and wasapproved by CENELEC as amendment A1 to EN 60335-2-21:2003 on 2004-11-01. The following dates are applicable: -latestdate by which the amendment has
28、 to be implemented at national level by publication ofan identical national standard or by endorsement (dop) 2005-08-01 -date on which national standards conflicting with the amendment have to be withdrawn (dow)2007-11-01 This amendment supplements or modifiesthe corresponding clauses of EN 60335-2-
29、21:2003. As a consequence of endorsing amendment 1:2004 to IEC 60335-2-21:2002, the common modificationsin EN 60335-2-21:2003 concerning Subclauses 24.102 and 24.102.2 are replaced by IEC textand therefore withdrawn. Additional special national conditions are listed in Annex ZA. There are no nationa
30、l deviations from this amendment. _ Endorsement notice The textofamendment 1:2004 to the International Standard IEC 60335-2-21:2002 wasapproved byCENELEC as an amendment to the European Standard without any modification. Page 3BS EN 60335221:2003+A2:2008BS EN 60335-2-21:2003+A2:2008EN 60335-2-21:200
31、3+A2:2008The textofdocument 61/3678/FDIS, future amendment 2 to IEC 60335-2-21:2002, prepared byIEC Technical Committee 61, Safetyofhousehold andsimilar electrical appliances, wassubmitted to the IEC-CENELEC parallel vote and was approved by CENELEC asamendment A2 to EN 60335-2-21:2003 on 2008-10-01
32、.The following dates are applicable:-latestdate by which the amendment has to beimplemented at national level by publication ofan identical nationalstandard or by endorsement (dop) 2009-07-01-date on which national standards conflicting with the amendment have to be withdrawn(dow) 2013-10-01This ame
33、ndment supplements or modifiesthe corresponding clauses of EN 60335-2-21:2003.There are no special national conditions causing a deviation from this amendment. There are no national deviations from this amendment. _Endorsement noticeThe textofamendment 2:2008 to the International Standard IEC 60335-
34、2-21:2002 was approved byCENELEC asan amendment to the European Standard without anymodification. _Foreword to amendment A2Page 4BS EN 60335221:2003+A2:2008Bibliography, add the following note to the standard mentioned: -1 NOTE EN (notISO13732Inthe Harmonizedas ISO13732-1:2006 modified)BS EN 60335-2
35、-21:2003+A2:2008EN 60335-2-21:2003+A2:2008CONTENTSINTRODUCTION.61Scope.72Normative references.73Definitions74General requirement.5General conditions forthe tests96Classification97Marking and instructions.98Protection againstaccessto liveparts109Startingof motor-operated appliances1010 Power input an
36、d current.11 Heating1112 Void .1113 Leakagecurrent and electricstrength atoperating temperature1114 Transient overvoltages .1115 Moisture resistance116 Leakagecurrent and electricstrength.1117 Overload protection of transformersand associatedcircuits.1118 Endurance1119 Abnormal operation120 Stabilit
37、yand mechanical hazards .1221 Mechanicalstrength.122 Construction.1323 Internal wiring.1524 Components.25 Supply connection and external flexible cords 1626 Terminals for external conductors.27 Provision forearthing.128 Screws and connections.1729 Clearances, creepage distancesand solidinsulation173
38、0 Resistanceto heat and fire.1731 Resistanceto rusting132 Radiation, toxicityand similar hazards17Annexes.20Annex ZA (normative) Special national conditions 2AnnexZB (informative)A-deviations.2Bibliography2Figure 101 Examples of types of storage water heaters.18Figure 102 Examples of positions of th
39、ethermocouples.111Page 5BS EN 60335221:2003+A2:2008910 11377772219BS EN 60335-2-21:2003+A2:2008EN 60335-2-21:2003+A2:2008INTRODUCTION It has been assumedin thedraftingofthisInternational Standard that theexecution of itsprovisions is entrusted to appropriately qualified andexperienced persons.This s
40、tandardrecognizesthe internationally accepted levelofprotectionagainst hazardssuchas electrical, mechanical, thermal,fireand radiation ofappliances when operated as in normal use taking into account the manufacturersinstructions. It also covers abnormalsituations that can be expected in practice and
41、 takesintoaccount the way in whichelectromagneticphenomena can affect the safe operation ofappliances.This standard takesintoaccount the requirements of IEC60364 asfar as possible so thatthere is compatibilitywith the wiring ruleswhenthe appliance is connected to the supply mains. However, national
42、wiring rules may differ.If an appliance within the scope of this standard also incorporates functionsthat are coveredby anotherpart2of IEC 60335, the relevant part 2isapplied to eachfunctionseparately, asfarasisreasonable. If applicable, the influenceofone function on the otheristaken into account.A
43、n appliance that complieswith the textofthisstandard will not necessarily be considered to comply with the safetyprinciplesofthe standard if, when examined and tested,itisfound tohave otherfeaturesthatimpair thelevel ofsafetycovered bytheserequirements.An appliance employing materials or having form
44、s of construction differing fromthose detailedin the requirements of this standard maybeexaminedand tested accordingtothe intentoftherequirements and, if foundtobesubstantially equivalent, maybeconsideredtocomplywith the standard. When apart2standard does notincludeadditional requirements to coverha
45、zards dealt within Part 1, Part 1applies. NOTE 1 Thismeans that the technicalcommittees responsible for the part 2 standards have determined that it isnot necessary to specify particular requirementsfor the appliance in question overand above the generalrequirements.This standard is aproduct family
46、standard dealingwiththe safety of appliancesand takesprecedence over horizontal andgeneric standards covering the same subject. NOTE 2 Horizontal and genericstandards covering a hazard are not applicable since theyhave been taken intoconsideration when developing the general and particular requireme
47、ntsfor the IEC 60335 series of standards.Forexample, in the case oftemperature requirementsfor surfaces on many appliances,genericstandards,such asISO 13732-1 for hot surfaces,are not applicable in addition to Part 1 or part 2 standards.Page 6BS EN 60335221:2003+A2:2008BS EN 60335-2-21:2003+A2:2008E
48、N 60335-2-21:2003+A2:2008HOUSEHOLDAND SIMILAR ELECTRICALAPPLIANCES SAFETY Part 2-21: Particular requirements for storage water heaters1 Scope This clauseofPart1 is replaced by the following.This InternationalStandarddeals with the safety of electric storage water heaters for household and similar pu
49、rposes and intended forheating water below boiling temperature,their rated voltage being not more than 250 Vfor single-phaseappliancesand 480Vforotherappliances. Appliances not intended for normal household use but which neverthelessmay be a source ofdanger to the public, such asappliances intended to be used bylaymen in shops, in lightindustry and on f
