1、BRITISH STANDARD BS EN 60335-2-70: 2002 Incorporating amendment no. 1 Household and similar electrical appliances Safety Part 2-70: Particular requirements for milking machines The European Standard EN 60335-2-70:2002, incorporating amendment A1:2007, has the status of a British Standard ICS 65.060.
2、99; 65.040.10 BS EN 60335-2-70:2002 This British Standard was published under the authority of the Standards Policy and Strategy Committee on 17 February 2003 BSI 2007 ISBN 978 0 580 59610 0 National foreword This British Standard is the UK implementation of EN 60335-2-70:2002, incorporating amendme
3、nt A1:2007. It is identical with IEC 60335-2-70:2002, incorporating amendment 1:2007. It supersedes BS EN 60335-2-70:1996 which is withdrawn.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 the number of t
4、he IEC amendment. For example, text altered by IEC amendment 1 is indicated in the text by !“. The UK participation in its preparation was entrusted to Technical Committee CPL/61/8, Farm equipment. A list of organizations represented on this committee can be obtained on request to its secretary. Thi
5、s 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 confer immunity from legal obligations.Amendments issued since publication Amd. No. Date Comments 17257 31 August 2007 Se
6、e national forewordEUROPEAN STANDARD EN 60335-2-70 +A1 NORME EUROPENNE EUROPISCHE NORM December 2002 CENELEC European Committee for Electrotechnical Standardization Comit Europen de Normalisation Electrotechnique Europisches Komitee fr Elektrotechnische Normung Central Secretariat: rue de Stassart 3
7、5, B - 1050 Brussels 2002 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members. Ref. No. EN 60335-2-70:2002 E ICS 65.060.99 Supersedes EN 60335-2-70:1996 English version Household and similar electrical appliances - Safety Part 2-70: Particular req
8、uirements for milking machines (IEC 60335-2-70:2002) Appareils lectrodomestiques et analogues - Scurit Partie 2-70: Rgles particulires pour les machines traire (CEI 60335-2-70:2002) Sicherheit elektrischer Gerte fr den Hausgebrauch und hnliche Zwecke Teil 2-70: Besondere Anforderungen fr Melkmaschin
9、en (IEC 60335-2-70:2002) This European Standard was approved by CENELEC on 2002-09-24. 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 l
10、ists 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
11、 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, Czech Republic, Denmark, Finland, France, Germany, Greece, Hungary, Icelan
12、d, Ireland, Italy, Luxembourg, Malta, Netherlands, Norway, Portugal, Slovakia, Spain, Sweden, Switzerland and United Kingdom. June 2007Foreword The text of document 61H/164/FDIS, future second edition of IEC 60335-2-70, prepared by SC 61H of the IEC Technical Committee 61, was submitted to the IEC-C
13、ENELEC parallel vote and was approved by CENELEC as EN 60335-2-70 on 2002-09-24. This European Standard replaces EN 60335-2-70:1996. The following dates are applicable: - latest date by which the EN has to be implemented at national level by publication of an identical national standard or by endors
14、ement (dop) 2003-07-01 - date on which national standards conflicting with the EN have to be withdrawn (dow) 2005-10-01 This part 2 has to be used in conjunction with EN 60335-1, Household and similar electrical appliances Safety Part 1: General requirements. It was established on the basis of the 2
15、002 edition of that standard. Amendments and revisions of Part 1 have also to be taken into account and the dates when such changes become applicable will be stated in the relevant amendment or revision of Part 1. This part 2 supplements or modifies the corresponding clauses of EN 60335-1, so as to
16、convert it into the European Standard: Safety requirements for electric milking machines. When a particular subclause of Part 1 is not mentioned in this part 2, that subclause applies as far as is reasonable. When this standard states “addition“, “modification“ or “replacement“, the relevant text of
17、 Part 1 is to be adapted accordingly. NOTE 1 The following numbering system is used: - subclauses, tables and figures that are numbered starting from 101 are additional to those in Part 1; - unless notes are in a new subclause or involve notes in Part 1, they are numbered starting from 101, includin
18、g 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 IEC standard are prefixed with the letter Z. NOTE 2 The following print types are used: - requirements: in roman type; - test specifications:
19、 in italic type; - notes: in small roman type. Words in bold in the text are defined in Clause 3. When a definition concerns an adjective, the adjective and the associated noun are also in bold. There are no special national conditions causing a deviation from this European Standard, other than thos
20、e listed in Annex ZA to EN 60335-1. There are no national deviations from this European Standard, other than those listed in Annex ZB to EN 60335-1. Annex AA is for information only. _ Page2 EN60335270:2002Introduction An investigation by CENELEC TC 61 has shown that all risks from products within t
21、he scope of this standard are fully covered by the Low Voltage Directive, 73/23/EEC. For products having mechanical moving parts, a risk assessment in accordance with the Machinery Directive, 98/37/EC, has shown that the risks are mainly of electrical origin and consequently this directive is not ap
22、plicable. However, the relevant essential safety requirements of the Machinery Directive are covered by this standard together with the principal objectives of the Low Voltage Directive. _ Endorsement notice The text of the International Standard IEC 60335-2-70:2002 was approved by CENELEC as a Euro
23、pean Standard without any modification. _ The text of document 61H/234/CDV, future amendment 1 to IEC 60335-2-70:2002, prepared by SC 61H, Safety of electrically operated farm appliances, of IEC Technical Committee 61, Safety of household and similar electrical appliances, was submitted to the IEC-C
24、ENELEC parallel unique acceptance procedure and was approved by CENELEC as amendment A1 to EN 60335-2-70:2002 on 2007-04-01. The following dates are applicable: latest date by which the amendment has to be implemented at national level by publication of an identical national standard or by endorseme
25、nt (dop) 2008-01-01 - date on which national standards conflicting with the amendment have to be withdrawn (dow) 2010-04-01 This amendment supplements or modifies the corresponding clauses of EN 60335-2-70:2002. There are no special national conditions causing a deviation from this amendment. There
26、are no national deviations from this amendment. - ForewordtoamendmentA1 _ Endorsement notice The text of amendment 1:2007 to the International Standard IEC 60335-2-70:2002 was approved by CENELEC as an amendment to the European Standard without any modification. _ EN 60335-2-70:2002 Page 3CONTENTS I
27、NTRODUCTION. 5 1 Scope. 6 2 Normative references . 6 3 Definitions 6 4 General requirement. 7 5 General conditions for the tests 7 6 Classification 7 Marking and instructions. 8 8 Protection against access to live parts 9 Starting of motor-operated appliances 10 Power input and current 11 Heating. 1
28、2 Void 13 Leakage current and electric strength at operating temperature 14 Transient overvoltages . 15 Moisture resistance 16 Leakage current and electric strength. 17 Overload protection of transformers and associated circuits . 18 Endurance 19 Abnormal operation 20 Stability and mechanical hazard
29、s 21 Mechanical strength . 22 Construction. 23 Internal wiring. 24 Components . 25 Supply connection and external flexible cords 26 Terminals for external conductors. 27 Provision for earthing . 28 Screws and connections. 29 Clearances, creepage distances and solid insulation 30 Resistance to heat a
30、nd fire. 31 Resistance to rusting 32 Radiation, toxicity and similar hazards Annexes . Annex AA (informative) Examples of milking machines Bibliography Figure AA.1 Example of a bucket or direct-to-can milking machine. Figure AA.2 Example of a pipeline milking machine . 14 Figure AA.3 Example of a re
31、corder milking machine 15 Figure AA.4 Example of an independent air and milk transport milking machine. 16 AnnexZC(normative)Normativereferencestointernationalpublicationswiththeir correspondingEuropeanpublications 10 10 10 10 10 10 10 11 11 11 11 12 12 12 12 12 12 12 13 13 13 13 13 13 14 14 18 . 19
32、 17 8 11 EN 60335-2-70:2002 Page 4INTRODUCTION It has been assumed in the drafting of this International Standard that the execution of its provisions is entrusted to appropriately qualified and experienced persons. This standard recognizes the internationally accepted level of protection against ha
33、zards such as electrical, mechanical, thermal, fire and radiation of appliances when operated as in normal use taking into account the manufacturers instructions. It also covers abnormal situations that can be expected in practice and takes into account the way in which electromagnetic phenomena can
34、 affect the safe operation of appliances. This standard takes into account the requirements of IEC 60364 as far as possible so that there is compatibility with the wiring rules when the appliance is connected to the supply mains. However, national wiring rules may differ. If an appliance within the
35、scope of this standard also incorporates functions that are covered by another part 2 of IEC 60335, the relevant part 2 is applied to each function separately, as far as is reasonable. If applicable, the influence of one function on the other is taken into account. When a Part 2 standard does not in
36、clude additional requirements to cover hazards dealt with in Part 1, Part 1 applies. NOTE 1 This means that the technical committees responsible for the Part 2 standards have determined that it is not necessary to specify particular requirements for the appliance in question over and above the gener
37、al requirements. This standard is a product family standard dealing with the safety of appliances and takes precedence over horizontal and generic standards covering the same subject. NOTE 2 Horizontal and generic standards covering a hazard are not applicable since they have been taken into conside
38、ration when developing the general and particular requirements for the IEC 60335 series of standards. For example, in the case of temperature requirements for surfaces on many appliances, generic standards, such as ISO 13732-1 for hot surfaces, are not applicable in addition to Part 1 or Part 2 stan
39、dards. An appliance that complies with the text of this standard will not necessarily be considered to comply with the safety principles of the standard if, when examined and tested, it is found to have other features which impair the level of safety covered by these requirements. An appliance emplo
40、ying materials or having forms of construction differing from those detailed in the requirements of this standard may be examined and tested according to the intent of the requirements and, if found to be substantially equivalent, may be considered to comply with the standard. EN 60335-2-70:2002 Pag
41、e 5 HOUSEHOLD AND SIMILAR ELECTRICAL APPLIANCES SAFETY Part 2-70: Particular requirements for milking machines 1 Scope This clause of Part 1 is replaced by the following. This International Standard deals with the safety of milking machines, to be used in stalls and in the open, that are designed fo
42、r milking farm animals, such as cows, the rated voltage of the milking machine being not more than 250 V for single-phase operation and 480 V for other operations. NOTE 101 Examples of such machines are: bucket milking machines; direct-to-can milking machines; milking pipeline machines; recorder mil
43、king machines; independent air and milk transport milking machines. NOTE 102 A detailed description of the types of milking machines covered by this standard is given in ISO 3918 and is indicated in Annex AA. NOTE 103 The upper limit for the rated voltage of 250 V single-phase may be exceeded in cas
44、es where 480 V split-phase motors are required. NOTE 104 This standard applies to milking sub-assemblies supplied by one manufacturer to form a complete milking machine. It can be used as guidance for the safety of milking machines formed from sub-assemblies supplied by different manufacturers. NOTE
45、 105 Attention is drawn to the fact that: for milking machines intended to be used in vehicles or on board ships, additional requirements may be necessary; in many countries, additional requirements are specified by the national health authorities, the national authorities responsible for the protec
46、tion of labour, the national water supply authorities and similar authorities. 2 Normative references This clause of Part 1 is applicable. ISO 3864-1, Graphical symbols Safety colours and safety signs Part 1: Design principles for safety signs in workplaces and public areas 3 Definitions This clause
47、 of Part 1 is applicable except as follows. ! “ EN 60335-2-70:2002 Page 63.1.9 Replacement: normal operation vacuum pumps and those of a pulsation system are operated at rated vacuum during continuous operation; releaser milk pumps are operated with the vacuum system being operated at rated vacuum o
48、f the vacuum pump; during milking the vacuum pump, the pulsation system and the releaser milk pump are operated continuously according to the manufacturers instructions, during cleaning the vacuum pump, the pulsation system and the releaser milk pump and cleaning system are operated continuously acc
49、ording to the manufacturers instructions 3.101 sub-assembly part that in association with other parts, forms a complete milking machine 3.102 milking machine complete machine installation for milking, usually comprising vacuum and pulsation systems, one or more clusters and other components 3.103 milking unit assembly of milking machine components that is replicat
