1、raising standards worldwideNO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBSI Standards PublicationHousehold electrical appliances Performance Water for testingBS EN 60734:2012National forewordThis British Standard is the UK implementation of EN 60734:2012. It is identical to
2、IEC 60734:2012. It supersedes BS EN 60734:2003 which is withdrawn.The UK participation in its preparation was entrusted by Technical Committee CPL/59, Performance of household electrical appliances, to Subcommittee CPL/59/1, Dishwashers and washing machines.A list of organizations represented on thi
3、s 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. The British Standards Institution 2013.Published by BSI Standards Limited 2013 ISBN 978 0 580 71058 2 IC
4、S 97.030Compliance 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 January 2013.Amendments issued since publicationDate Text affectedBRITISH STANDARDBS EN 60734:2012EURO
5、PEAN STANDARD EN 60734 NORME EUROPENNE EUROPISCHE NORM September 2012 CENELEC European Committee for Electrotechnical Standardization Comit Europen de Normalisation Electrotechnique Europisches Komitee fr Elektrotechnische Normung Management Centre: Avenue Marnix 17, B - 1000 Brussels 2012 CENELEC -
6、 All rights of exploitation in any form and by any means reserved worldwide for CENELEC members. Ref. No. EN 60734:2012 E ICS 97.060 Supersedes EN 60734:2003English version Household electrical appliances - Performance - Water for testing (IEC 60734:2012) Appareils lectrodomestiques - Aptitude la fo
7、nction - Eau pour les essais (CEI 60734:2012) Elektrische Gerte fr den Hausgebrauch - Gebrauchseigenschaften - Wasser fr Prfungen (IEC 60734:2012) This European Standard was approved by CENELEC on 2012-08-01. CENELEC members are bound to comply with the CEN/CENELEC Internal Regulations which stipula
8、te 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 CEN-CENELEC Management Centre or to any CENELEC member. This European
9、 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 CEN-CENELEC Management Centre has the same status as the official versions. CENELEC member
10、s are the national electrotechnical committees of Austria, Belgium, Bulgaria, Croatia, Cyprus, the Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, the Netherlands, Norwa
11、y, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. BS EN 60734:2012EN 60734:2012 - 2 - Foreword The text of document 59D/398/FDIS, future edition 4 of IEC 60734, prepared by SC 59D, Home laundry appliances, of IEC TC 59, Performance of househ
12、old and similar electrical appliances was submitted to the IEC-CENELEC parallel vote and approved by CENELEC as EN 60734:2012. The following dates are fixed: latest date by which the document has to be implemented at national level by publication of an identical national standard or by endorsement (
13、dop) 2013-05-01 latest date by which the national standards conflicting with the document have to be withdrawn (dow) 2015-08-01 This document supersedes EN 60734:2003. EN 60734:2012 includes the following significant technical changes with respect to EN 60734:2003: a) four types of standard water, f
14、rom soft to very hard, are defined with specification for hardness, alkalinity and conductivity; b) preparation method A is no longer maintained; and c) method C3 is added to prepare water of specified hardness, conductivity and alkalinity starting with natural water while the natural water based me
15、thods C1 and C2 focus on water hardness only, without allowing control or setting of alkalinity and conductivity. Words in bold in the text are defined in Clause 3. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. CENELEC and/or CE
16、N shall not be held responsible for identifying any or all such patent rights. Endorsement notice The text of the International Standard IEC 60734:2012 was approved by CENELEC as a European Standard without any modification. BS EN 60734:2012- 3 - EN 60734:2012 Annex ZA (normative) Normative referenc
17、es to international publications with their corresponding European publications The following documents, in whole or in part, are normatively referenced in this document and are indispensable for its application. For dated references, only the edition cited applies. For undated references, the lates
18、t 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 EN/HD Year ISO 6059 - Water quality - Determination of the sum of calcium
19、and magnesium - EDTA titrimetric method - - ISO 7888 - Water quality - Determination of electrical conductivity EN 27888 - ISO 9963-1 - Water quality - Determination of alkalinity - Part 1: Determination of total and composite alkalinity EN ISO 9963-1 - ISO 10523 - Water quality - Determination of p
20、H EN ISO 10523 - BS EN 60734:2012 2 60734 IEC:2012 CONTENTS INTRODUCTION . 5 1 Scope . 6 2 Normative references . 6 3 Terms, definitions and symbols 6 3.1 Terms and definitions 6 3.2 Symbols 7 4 Measurements and accuracy 8 5 Standard water . 8 5.1 Water types . 8 5.2 Additional requirements . 9 6 Pr
21、eparation of standard water. 9 6.1 Demineralisation of natural water 9 6.2 Preparation of standard water method B 9 6.2.1 Principle 9 6.2.2 Procedure 9 6.2.3 Composition of standard water prepared by method B . 10 6.3 Preparation of water methods C1 and C2 10 6.3.1 Principle 10 6.3.2 Composition of
22、standard water prepared by methods C1 and C2 . 10 6.3.3 Hardness adjustment method C1 . 11 6.3.4 Hardness adjustment method C2 . 11 6.4 Preparation of water method C3 11 6.4.1 Principle 11 6.4.2 Determination of initial water properties . 11 6.4.3 Dilution with demineralised water 11 6.4.4 Determina
23、tion of the required salt additions . 12 6.4.5 Adjusting PH . 13 7 Storage of standard water 13 7.1 General . 13 7.2 Effects of heat on standard water 13 8 Checking 13 Annex A (informative) Water hardness Conversion table . 14 Table 1 Measurement specifications 8 Table 2 Composition of soft, medium
24、hard, hard and very hard water 8 Table 3 Maximum content of heavy metal ions and chloride . 9 Table 4 Amounts of salt solutions to be added to 1 l of demineralised water 10 Table 5 Expected composition of standard water achieved by method B 10 Table A.1 Conversion in French, English, German degrees
25、and grains per gallon (US) for the values of specified total hardness 14 BS EN 60734:201260734 IEC:2012 5 INTRODUCTION This publication specifies water qualities with regard to hardness, alkalinity and conductivity and describes several methods to prepare water to be used for testing household appli
26、ances in cases where the water quality is important for the reproducibility of the test results. The described methods allow the preparation of water complying with all three target requirements (hardness, alkalinity, conductivity), or just hardness depending on the requirements set out in the refer
27、ring appliance test method. Compared to the third edition of IEC 60734 (2001), method A is no longer maintained and another method, method C3, is added. Method B is used to prepare water of the correct total hardness. Preparation starts with demineralised water in which hardening salts are dissolved
28、. It will give water specified temporary as well as permanent hardness, whilst complying with the specifications for alkalinity and conductivity. Method C1 starts with natural water with higher hardness than required, while method C2 starts with soft natural water, which is hardened. Depending on th
29、e composition of the natural water, several other ions might be present. Restrictions regarding the amounts are given for some ions, which may influence the cleaning results when testing washing machines and dishwashers. No specification regarding temporary and permanent hardness is given. The devel
30、opment of method C3 appreciates the need for water of specified conductivity and alkalinity for testing the performance of tumble dryers. While synthetic method B meets this need, the natural water based methods C1 and C2 focus on water hardness only without allowing control or setting of alkalinity
31、 and conductivity. The new method C3, which starts with natural water, fills that gap. BS EN 60734:2012 6 60734 IEC:2012 HOUSEHOLD ELECTRICAL APPLIANCES PERFORMANCE WATER FOR TESTING 1 Scope This International Standard describes the preparation of four types of water of different hardness, conductiv
32、ity and alkalinity, intended to be used for testing the performance of household appliances such as washing machines, dishwashers, tumble dryers, steam irons etc. It defines the characteristics of these waters and establishes various methods to be used for obtaining them. It also includes specificat
33、ions for required measurements. 2 Normative references The following documents, in whole or in part, are normatively referenced in this document and are indispensable for its application. For dated references, only the edition cited applies. For undated references, the latest edition of the referenc
34、ed document (including any amendments) applies. ISO 6059, Water quality Determination of the sum of calcium and magnesium EDTA titrimetric method ISO 7888, Water quality Determination of electrical conductivity ISO 9963-1, Water quality Determination of alkalinity Part 1: Determination of total and
35、composite alkalinity ISO 10523, Water quality Determination of pH 3 Terms, definitions and symbols 3.1 Terms and definitions For the purposes of this document, the following definitions apply. 3.1.1 water hardness parameter indicating the quantity of alkaline earth salts (bicarbonates, sulphates, ch
36、lorides etc.) present in the water 3.1.2 total hardness sum of calcium and magnesium ions in the water 3.1.3 temporary hardness fraction of the total hardness equivalent to the bicarbonate content 3.1.4 permanent hardness difference between the total hardness and the temporary hardness BS EN 60734:2
37、01260734 IEC:2012 7 3.1.5 alkalinity ability of a solution to neutralize acids to the equivalence point of carbonate or bicarbonate, i.e. equals the stoichiometric sum of the bases in the solution 3.1.6 conductivity ability of a solution to conduct an electric current, i.e. measure of the stoichiome
38、tric sum of the ions dissolved in the solution 3.2 Symbols Symbol Unit Definition A0mmol/l initial alkalinity Areqmmol/l target alkalinity c0(Fe) mg/l initial iron content cmax(Fe) mg/l maximum iron content c0(Cu) mg/l initial copper content cmax(Cu) mg/l maximum copper content c0(Mn) mg/l initial m
39、anganese content cmax(Mn) mg/l maximum manganese content c0(Cl-) mmol/l initial chloride content cmax(Cl-) mmol/l maximum chloride content cond0S/cm initial conductivity condreqS/cm target conductivity dil dilution factor dilmin lowest possible dilution factor that allows the preparation of water to
40、 meet all requirements dilmin(h,A,cond) lowest possible dilution factor that allows the preparation of water to meet the total hardness, alkalinity and conductivity requirements dilmin(Fe) lowest possible dilution factor that allows the preparation of water to meet the maximum iron content requireme
41、nt dilmin(Cu) lowest possible dilution factor that allows the preparation of water to meet the maximum copper content requirement dilmin(Mn) lowest possible dilution factor that allows the preparation of water to meet the maximum manganese content requirement dilmin(Cl-) lowest possible dilution fac
42、tor that allows the preparation of water to meet the maximum chloride content requirement kA constants kH constants h0initial total hardness hreqtarget total hardness additionAml quantity of solution to be added to reach required alkalinity additionhml quantity of solution to be added to reach requi
43、red total hardness additioncondml quantity of solution to be added to reach required conductivity BS EN 60734:2012 8 60734 IEC:2012 4 Measurements and accuracy Measurements according to this International Standard shall comply with the following specifications in Table 1: Table 1 Measurement specifi
44、cations Parameter Unit Minimum accuracy Additional requirements and remarks Total hardness mmol/l 2 % See ISO 6059 for specifications of such determination. Alkalinity mmol/l 5 % The alkalinity is measured as the concentration of (HCO3-). If determined by titration with hydrochloric acid the endpoin
45、t shall be pH 4,5 the stoichiometric factor then is 1. See ISO 9963-1 for specifications of such determination. Conductivity S/cm 5 % at 20 C See ISO 7888 for specifications of such determination. pH - 0,05 The accuracy requirement shall be met over a temperature range of 15 C to 25 C. See ISO 10523
46、 for specifications of such determination. Content of iron, copper, manganese or chloride - - The requirements for these parameters are maximum content requirements. The accuracy of the measurement shall be sufficient to prove compliance with these requirements. 5 Standard water 5.1 Water types In T
47、able 2, different water types are defined, which are all referred to by their level of total hardness and specified with specific levels of total hardness, alkalinity, conductivity and pH. Table 2 Composition of soft, medium hard, hard and very hard water Property Unit Water type Standard soft water
48、 Standard medium hard water Standard hard water Standard very hard water Total hardness mmol/l (Ca2+/Mg2+) 0,50 0,20 1,50 0,20 2,50 0,20 3,50 0,20 Alkalinity mmol/l (HCO3-) 0,67 0,20 2,00 0,20 3,35 0,20 4,70 0,20 Conductivity (at 20 C) S/cm 150 50 450 100 750 150 1050 250 pH (at 20 C) - 8,0 to 8,5 7
49、,5 to 7,9 7,3 to 7,7 - Other test methods and standards referring to the water types in this International Standard may require to meet all or only selected properties given in Table 2. NOTE With the specification of these four standard waters it is possible to select one or more standardised waters, which would approximate the local natural waters available. If any other water hardness is needed, it can be prepared in a similar way by interp
