IEC 60335-2-70:2002
(Main)Household and similar electrical appliances - Safety - Part 2-70: Particular requirements for milking machines
Household and similar electrical appliances - Safety - Part 2-70: Particular requirements for milking machines
Deals with milking machines for milking farm animals, for use in stalls or in the open. Examples are bucket and direct-to-can milking machines, milking pipeline machines, recorder milking machines. The rated voltage is less than 250 V for single-phase operation and 480 V for other operations.
Appareils électrodomestiques et analogues - Sécurité - Partie 2-70: Règles particulières pour les machines à traire
En anglais seulement.
General Information
Relations
Standards Content (Sample)
INTERNATIONAL IEC
STANDARD
60335-2-70
Second edition
2002-03
Household and similar electrical appliances –
Safety –
Part 2-70:
Particular requirements for milking machines
Appareils électrodomestiques et analogues –
Sécurité –
Partie 2-70:
Règles particulières pour les machines à traire
Reference number
Publication numbering
As from 1 January 1997 all IEC publications are issued with a designation in the
60000 series. For example, IEC 34-1 is now referred to as IEC 60034-1.
Consolidated editions
The IEC is now publishing consolidated versions of its publications. For example,
edition numbers 1.0, 1.1 and 1.2 refer, respectively, to the base publication, the
base publication incorporating amendment 1 and the base publication incorporating
amendments 1 and 2.
Further information on IEC publications
The technical content of IEC publications is kept under constant review by the IEC,
thus ensuring that the content reflects current technology. Information relating to
this publication, including its validity, is available in the IEC Catalogue of
publications (see below) in addition to new editions, amendments and corrigenda.
Information on the subjects under consideration and work in progress undertaken
by the technical committee which has prepared this publication, as well as the list
of publications issued, is also available from the following:
• IEC Web Site (www.iec.ch)
• Catalogue of IEC publications
The on-line catalogue on the IEC web site (www.iec.ch/catlg-e.htm) enables
you to search by a variety of criteria including text searches, technical
committees and date of publication. On-line information is also available on
recently issued publications, withdrawn and replaced publications, as well as
corrigenda.
• IEC Just Published
This summary of recently issued publications (www.iec.ch/JP.htm) is also
available by email. Please contact the Customer Service Centre (see below) for
further information.
• Customer Service Centre
If you have any questions regarding this publication or need further assistance,
please contact the Customer Service Centre:
Email: custserv@iec.ch
Tel: +41 22 919 02 11
Fax: +41 22 919 03 00
INTERNATIONAL IEC
STANDARD
60335-2-70
Second edition
2002-03
Household and similar electrical appliances –
Safety –
Part 2-70:
Particular requirements for milking machines
Appareils électrodomestiques et analogues –
Sécurité –
Partie 2-70:
Règles particulières pour les machines à traire
IEC 2002 Copyright - all rights reserved
No part of this publication may be reproduced or utilized in any form or by any means, electronic or
mechanical, including photocopying and microfilm, without permission in writing from the publisher.
International Electrotechnical Commission, 3, rue de Varembé, PO Box 131, CH-1211 Geneva 20, Switzerland
Telephone: +41 22 919 02 11 Telefax: +41 22 919 03 00 E-mail: inmail@iec.ch Web: www.iec.ch
PRICE CODE
Commission Electrotechnique Internationale
R
International Electrotechnical Commission
Международная Электротехническая Комиссия
For price, see current catalogue
– 2 – 60335-2-70 IEC:2002(E)
CONTENTS
FOREWORD.4
INTRODUCTION.6
1 Scope.7
2 Normative references .7
3 Definitions .7
4 General requirement.8
5 General conditions for the tests .8
6 Classification.8
7 Marking and instructions.9
8 Protection against access to live parts.10
9 Starting of motor-operated appliances .10
10 Power input and current.10
11 Heating.10
12 Void .10
13 Leakage current and electric strength at operating temperature.10
14 Transient overvoltages .10
15 Moisture resistance .10
16 Leakage current and electric strength.11
17 Overload protection of transformers and associated circuits .11
18 Endurance.11
19 Abnormal operation .11
20 Stability and mechanical hazards.11
21 Mechanical strength .11
22 Construction .12
23 Internal wiring.12
24 Components .12
25 Supply connection and external flexible cords .12
26 Terminals for external conductors.12
27 Provision for earthing .12
28 Screws and connections .13
29 Clearances, creepage distances and solid insulation .13
30 Resistance to heat and fire.13
31 Resistance to rusting.13
32 Radiation, toxicity and similar hazards.13
Annexes .14
Annex AA (informative) Examples of milking machines .14
Bibliography.18
60335-2-70 IEC:2002(E) – 3 –
Figure AA.1 – Example of a bucket or direct-to-can milking machine.14
Figure AA.2 – Example of a pipeline milking machine .15
Figure AA.3 – Example of a recorder milking machine .16
Figure AA.4 – Example of an independent air and milk transport milking machine.17
– 4 – 60335-2-70 IEC:2002(E)
INTERNATIONAL ELECTROTECHNICAL COMMISSION
___________
HOUSEHOLD AND SIMILAR ELECTRICAL APPLIANCES –
SAFETY –
Part 2-70: Particular requirements for milking machines
FOREWORD
1) The IEC (International Electrotechnical Commission) is a worldwide organization for standardization
comprising all national electrotechnical committees (IEC National Committees). The object of the IEC is to
promote international co-operation on all questions concerning standardization in the electrical and electronic
fields. To this end and in addition to other activities, the IEC publishes International Standards. Their
preparation is entrusted to technical committees; any IEC National Committee interested in the subject dealt
with may participate in this preparatory work. International, governmental and non-governmental
organizations liaising with the IEC also participate in this preparation. The IEC collaborates closely with the
International Organization for Standardization (ISO) in accordance with conditions determined by agreement
between the two organizations.
2) The formal decisions or agreements of the IEC on technical matters express, as nearly as possible, an
international consensus of opinion on the relevant subjects since each technical committee has
representation from all interested National Committees.
3) The documents produced have the form of recommendations for international use and are published in the
form of standards, technical specifications, technical reports or guides and they are accepted by the National
Committees in that sense.
4) In order to promote international unification, IEC National Committees undertake to apply IEC International
Standards transparently to the maximum extent possible in their national and regional standards. Any
divergence between the IEC Standard and the corresponding national or regional standard shall be clearly
indicated in the latter.
5) The IEC provides no marking procedure to indicate its approval and cannot be rendered responsible for any
equipment declared to be in conformity with one of its standards.
6) Attention is drawn to the possibility that some of the elements of this International Standard may be the
subject of patent rights. The IEC shall not be held responsible for identifying any or all such patent rights.
This part of International Standard IEC 60335 has been prepared by sub-committee 61H:
Safety of electrically-operated farm appliances, of IEC technical committee 61: Safety of
household and similar electrical appliances.
This second edition cancels and replaces the first edition published in 1993. It constitutes a
technical revision.
The text of this part of IEC 60335 is based on the following documents:
FDIS Report on voting
61H/164/FDIS 61H/169/RVD
Full information on the voting for the approval of this standard can be found in the report on
voting indicated in the above Table.
This part 2 is to be used in conjunction with the latest edition of IEC 60335-1 and its
amendments. It was established on the basis of the fourth edition (2001) of that standard.
NOTE 1 When “Part 1” is mentioned in this standard, it refers to IEC 60335-1.
This part 2 supplements or modifies the corresponding clauses in IEC 60335-1, so as to
convert that publication into the IEC standard: Safety requirements for milking machines.
60335-2-70 IEC:2002(E) – 5 –
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 in Part 1 is to be adapted accordingly.
NOTE 2 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, including
those in a replaced clause or subclause;
– additional annexes are lettered AA, BB, etc.
NOTE 3 The following print types are used:
– requirements: in roman type
– test specifications: 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 associated noun are also in bold.
The committee has decided that the contents of this publication will remain unchanged until
2004. At this date the publication will be
• reconfirmed;
• withdrawn;
• replaced by a revised edition, or
• amended.
The following differences exist in the countries indicated below:
– 25.7: Ordinary PVC sheathed supply cords are permitted (Australia, New Zealand).
– 6 – 60335-2-70 IEC:2002(E)
INTRODUCTION
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 hazards such
as electrical, mechanical, thermal, fire and radiation of appliances when operated as in
normal use taking into account the manufacturer's instructions. It also covers abnormal
situations that can be expected in practice.
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 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.
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.
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 employing 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.
60335-2-70 IEC:2002(E) – 7 –
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 for 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 milking 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 cases 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 105 Attention is drawn to the fact that:
–for milking machines intende
...
NORME CEI
INTERNATIONALE
IEC
60335-2-70
INTERNATIONAL
Deuxième édition
STANDARD
Second edition
2002-03
Appareils électrodomestiques et analogues –
Sécurité –
Partie 2-70:
Règles particulières pour les machines
à traire
Household and similar electrical appliances –
Safety –
Part 2-70:
Particular requirements for milking machines
Numéro de référence
Reference number
CEI/IEC 60335-2-70:2002
Numérotation des publications Publication numbering
Depuis le 1er janvier 1997, les publications de la CEI As from 1 January 1997 all IEC publications are
sont numérotées à partir de 60000. Ainsi, la CEI 34-1 issued with a designation in the 60000 series. For
devient la CEI 60034-1. example, IEC 34-1 is now referred to as IEC 60034-1.
Editions consolidées Consolidated editions
Les versions consolidées de certaines publications de la The IEC is now publishing consolidated versions of its
CEI incorporant les amendements sont disponibles. Par publications. For example, edition numbers 1.0, 1.1
exemple, les numéros d’édition 1.0, 1.1 et 1.2 indiquent and 1.2 refer, respectively, to the base publication,
respectivement la publication de base, la publication de the base publication incorporating amendment 1 and
base incorporant l’amendement 1, et la publication de the base publication incorporating amendments 1
base incorporant les amendements 1 et 2. and 2.
Informations supplémentaires Further information on IEC publications
sur les publications de la CEI
Le contenu technique des publications de la CEI est The technical content of IEC publications is kept
constamment revu par la CEI afin qu'il reflète l'état under constant review by the IEC, thus ensuring that
actuel de la technique. Des renseignements relatifs à the content reflects current technology. Information
cette publication, y compris sa validité, sont dispo- relating to this publication, including its validity, is
nibles dans le Catalogue des publications de la CEI available in the IEC Catalogue of publications
(voir ci-dessous) en plus des nouvelles éditions, (see below) in addition to new editions, amendments
amendements et corrigenda. Des informations sur les and corrigenda. Information on the subjects under
sujets à l’étude et l’avancement des travaux entrepris consideration and work in progress undertaken by the
par le comité d’études qui a élaboré cette publication, technical committee which has prepared this
ainsi que la liste des publications parues, sont publication, as well as the list of publications issued,
également disponibles par l’intermédiaire de: is also available from the following:
• Site web de la CEI (www.iec.ch) • IEC Web Site (www.iec.ch)
• Catalogue des publications de la CEI • Catalogue of IEC publications
Le catalogue en ligne sur le site web de la CEI The on-line catalogue on the IEC web site
(www.iec.ch/searchpub) vous permet de faire des (www.iec.ch/searchpub) enables you to search by a
recherches en utilisant de nombreux critères, variety of criteria including text searches,
comprenant des recherches textuelles, par comité technical committees and date of publication. On-
d’études ou date de publication. Des informations en line information is also available on recently
ligne sont également disponibles sur les nouvelles issued publications, withdrawn and replaced
publications, les publications remplacées ou retirées, publications, as well as corrigenda.
ainsi que sur les corrigenda.
• IEC Just Published • IEC Just Published
Ce résumé des dernières publications parues This summary of recently issued publications
(www.iec.ch/online_news/justpub) est aussi dispo- (www.iec.ch/online_news/justpub) is also available
nible par courrier électronique. Veuillez prendre by email. Please contact the Customer Service
contact avec le Service client (voir ci-dessous) Centre (see below) for further information.
pour plus d’informations.
• Service clients • Customer Service Centre
Si vous avez des questions au sujet de cette If you have any questions regarding this
publication ou avez besoin de renseignements publication or need further assistance, please
supplémentaires, prenez contact avec le Service contact the Customer Service Centre:
clients:
Email: custserv@iec.ch Email: custserv@iec.ch
Tél: +41 22 919 02 11 Tel: +41 22 919 02 11
Fax: +41 22 919 03 00 Fax: +41 22 919 03 00
.
NORME CEI
INTERNATIONALE
IEC
60335-2-70
INTERNATIONAL
Deuxième édition
STANDARD
Second edition
2002-03
Appareils électrodomestiques et analogues –
Sécurité –
Partie 2-70:
Règles particulières pour les machines
à traire
Household and similar electrical appliances –
Safety –
Part 2-70:
Particular requirements for milking machines
IEC 2002 Droits de reproduction réservés Copyright - all rights reserved
Aucune partie de cette publication ne peut être reproduite ni No part of this publication may be reproduced or utilized in any
utilisée sous quelque forme que ce soit et par aucun procédé, form or by any means, electronic or mechanical, including
électronique ou mécanique, y compris la photocopie et les photocopying and microfilm, without permission in writing from
microfilms, sans l'accord écrit de l'éditeur. the publisher.
International Electrotechnical Commission, 3, rue de Varembé, PO Box 131, CH-1211 Geneva 20, Switzerland
Telephone: +41 22 919 02 11 Telefax: +41 22 919 03 00 E-mail: inmail@iec.ch Web: www.iec.ch
CODE PRIX
Q
PRICE CODE
Commission Electrotechnique Internationale
International Electrotechnical Commission
МеждународнаяЭлектротехническаяКомиссия
Pour prix, voir catalogue en vigueur
For price, see current catalogue
– 2 – 60335-2-70 CEI:2004
SOMMAIRE
AVANT-PROPOS .4
INTRODUCTION.8
1 Domaine d’application.10
2 Références normatives.10
3 Définitions.10
4 Prescriptions générales.12
5 Conditions générales d’essais.12
6 Classification.14
7 Marquage et indications.14
8 Protection contre l’accès aux parties actives .16
9 Démarrage des appareils à moteur .16
10 Puissance et courant.16
11 Echauffements.16
12 Vacant.16
13 Courant de fuite et rigidité diélectrique à la température de régime .16
14 Surtensions transitoires.18
15 Résistance à l’humidité.18
16 Courant de fuite et rigidité diélectrique .18
17 Protection contre la surcharge des transformateurs et des circuits associés .18
18 Endurance.18
19 Fonctionnement anormal.18
20 Stabilité et dangers mécaniques .20
21 Résistance mécanique.20
22 Construction.20
23 Conducteurs internes.20
24 Composants.20
25 Raccordement au réseau et câbles souples extérieurs .20
26 Bornes pour conducteurs externes .22
27 Dispositions en vue de la mise à la terre .22
28 Vis et connexions.22
29 Distances dans l’air, lignes de fuite et isolation solide .22
30 Résistance à la chaleur et au feu.22
31 Protection contre la rouille .22
32 Rayonnement, toxicité et dangers analogues.22
Annexes.24
Annexe AA (informative) Exemples de machines à traire .24
Bibliographie.32
Figure AA.1 – Exemple de machine à traire avec pot trayeur ou directement en bidon .24
Figure AA.2 – Exemple de machine à traire avec lactoduc .26
Figure AA.3 – Exemple de machine à traire avec récipient de contrôle.28
Figure AA.4 – Exemple de machine à traire avec circuit indépendant.30
60335-2-70 IEC:2004 – 3 –
CONTENTS
FOREWORD.5
INTRODUCTION.9
1 Scope.11
2 Normative references.11
3 Definitions.11
4 General requirement.13
5 General conditions for the tests .13
6 Classification.15
7 Marking and instructions.15
8 Protection against access to live parts.17
9 Starting of motor-operated appliances .17
10 Power input and current.17
11 Heating.17
12 Void.17
13 Leakage current and electric strength at operating temperature.17
14 Transient overvoltages.19
15 Moisture resistance.19
16 Leakage current and electric strength.19
17 Overload protection of transformers and associated circuits .19
18 Endurance.19
19 Abnormal operation.19
20 Stability and mechanical hazards.21
21 Mechanical strength.21
22 Construction.21
23 Internal wiring.21
24 Components.21
25 Supply connection and external flexible cords .21
26 Terminals for external conductors.23
27 Provision for earthing.23
28 Screws and connections .23
29 Clearances, creepage distances and solid insulation .23
30 Resistance to heat and fire .23
31 Resistance to rusting.23
32 Radiation, toxicity and similar hazards.23
Annexes.25
Annex AA (informative) Examples of milking machines .25
Bibliography.33
Figure AA.1 – Example of a bucket or direct-to-can milking machine.25
Figure AA.2 – Example of a pipeline milking machine .27
Figure AA.3 – Example of a recorder milking machine .29
Figure AA.4 – Example of an independent air and milk transport milking machine.31
– 4 – 60335-2-70 CEI:2004
COMMISSION ÉLECTROTECHNIQUE INTERNATIONALE
___________
APPAREILS ÉLECTRODOMESTIQUES ET ANALOGUES –
SÉCURITÉ –
Partie 2-70: Règles particulières pour les machines à traire
AVANT-PROPOS
1) La Commission Electrotechnique Internationale (CEI) est une organisation mondiale de normalisation
composée de l'ensemble des comités électrotechniques nationaux (Comités nationaux de la CEI). La CEI a
pour objet de favoriser la coopération internationale pour toutes les questions de normalisation dans les
domaines de l'électricité et de l'électronique. A cet effet, la CEI – entre autres activités – publie des Normes
internationales, des Spécifications techniques, des Rapports techniques, des Spécifications accessibles au
public (PAS) et des Guides (ci-après dénommés "Publication(s) de la CEI"). Leur élaboration est confiée à des
comités d'études, aux travaux desquels tout Comité national intéressé par le sujet traité peut participer. Les
organisations internationales, gouvernementales et non gouvernementales, en liaison avec la CEI, participent
également aux travaux. La CEI collabore étroitement avec l'Organisation Internationale de Normalisation (ISO),
selon des conditions fixées par accord entre les deux organisations.
2) Les décisions ou accords officiels de la CEI concernant les questions techniques représentent, dans la mesure
du possible, un accord international sur les sujets étudiés, étant donné que les Comités nationaux de la CEI
intéressés sont représentés dans chaque comité d’études.
3) Les Publications de la CEI se présentent sous la forme de recommandations internationales et sont agréées
comme telles par les Comités nationaux de la CEI. Tous les efforts raisonnables sont entrepris afin que la CEI
s'assure de l'exactitude du contenu technique de ses publications; la CEI ne peut pas être tenue responsable
de l'éventuelle mauvaise utilisation ou interprétation qui en est faite par un quelconque utilisateur final.
4) Dans le but d'encourager l'uniformité internationale, les Comités nationaux de la CEI s'engagent, dans toute la
mesure possible, à appliquer de façon transparente les Publications de la CEI dans leurs publications
nationales et régionales. Toutes divergences entre toutes Publications de la CEI et toutes publications
nationales ou régionales correspondantes doivent être indiquées en termes clairs dans ces dernières.
5) La CEI n’a prévu aucune procédure de marquage valant indication d’approbation et n'engage pas sa
responsabilité pour les équipements déclarés conformes à une de ses Publications.
6) Tous les utilisateurs doivent s'assurer qu'ils sont en possession de la dernière édition de cette publication.
7) Aucune responsabilité ne doit être imputée à la CEI, à ses administrateurs, employés, auxiliaires ou
mandataires, y compris ses experts particuliers et les membres de ses comités d'études et des Comités
nationaux de la CEI, pour tout préjudice causé en cas de dommages corporels et matériels, ou de tout autre
dommage de quelque nature que ce soit, directe ou indirecte, ou pour supporter les coûts (y compris les frais
de justice) et les dépenses découlant de la publication ou de l'utilisation de cette Publication de la CEI ou de
toute autre Publication de la CEI, ou au crédit qui lui est accordé.
8) L'attention est attirée sur les références normatives citées dans cette publication. L'utilisation de publications
référencées est obligatoire pour une application correcte de la présente publication.
9) L’attention est attirée sur le fait que certains des éléments de la présente Publication de la CEI peuvent faire
l’objet de droits de propriété intellectuelle ou de droits analogues. La CEI ne saurait être tenue pour
responsable de ne pas avoir identifié de tels droits de propriété et de ne pas avoir signalé leur existence.
La présente partie de la Norme internationale CEI 60335 a été établie par le sous-comité 61H:
Sécurité des appareils électriques employés à la ferme, du comité d'études 61 de la CEI:
Sécurité des appareils électrodomestiques et analogues.
Cette deuxième édition annule et remplace la première édition publiée en 1993 dont elle
constitue une révision technique.
Cette version bilingue (2004-01) remplace la version monolingue anglaise.
60335-2-70 IEC:2004 – 5 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION
___________
HOUSEHOLD AND SIMILAR ELECTRICAL APPLIANCES –
SAFETY –
Part 2-70: Particular requirements for milking machines
FOREWORD
1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising
all national electrotechnical committees (IEC National Committees). The object of IEC is to promote
international co-operation on all questions concerning standardization in the electrical and electronic fields. To
this end and in addition to other activities, IEC publishes International Standards, Technical Specifications,
Technical Reports, Publicly Available Specifications (PAS) and Guides (hereafter referred to as “IEC
Publication(s)”). Their preparation is entrusted to technical committees; any IEC National Committee interested
in the subject dealt with may participate in this preparatory work. International, governmental and non-
governmental organizations liaising with the IEC also participate in this preparation. IEC collaborates closely
with the International Organization for Standardization (ISO) in accordance with conditions determined by
agreement between the two organizations.
2) The formal decisions or agreements of IEC on technical matters express, as nearly as possible, an international
consensus of opinion on the relevant subjects since each technical committee has representation from all
interested IEC National Committees.
3) IEC Publications have the form of recommendations for international use and are accepted by IEC National
Committees in that sense. While all reasonable efforts are made to ensure that the technical content of IEC
Publications is accurate, IEC cannot be held responsible for the way in which they are used or for any
misinterpretation by any end user.
4) In order to promote international uniformity, IEC National Committees undertake to apply IEC Publications
transparently to the maximum extent possible in their national and regional publications. Any divergence
between any IEC Publication and the corresponding national or regional publication shall be clearly indicated in
the latter.
5) IEC provides no marking procedure to indicate its approval and cannot be rendered responsible for any
equipment declared to be in conformity with an IEC Publication.
6) All users should ensure that they have the latest edition of this publication.
7) No liability shall attach to IEC or its directors, employees, servants or agents including individual experts and
members of its technical committees and IEC National Committees for any personal injury, property damage or
other damage of any nature whatsoever, whether direct or indirect, or for costs (including legal fees) and
expenses arising out of the publication, use of, or reliance upon, this IEC Publication or any other IEC
Publications.
8) Attention is drawn to the Normative references cited in this publication. Use of the referenced publications is
indispensable for the correct application of this publication.
9) Attention is drawn to the possibility that some of the elements of this IEC Publication may be the subject of
patent rights. IEC shall not be held responsible for identifying any or all such patent rights.
This part of International Standard IEC 60335 has been prepared by sub-committee 61H:
Safety of electrically-operated farm appliances, of IEC technical committee 61: Safety of
household and similar electrical appliances.
This second edition cancels and replaces the first edition published in 1993. It constitutes a
technical revision.
This bilingual version (2004-01) replaces the English version.
– 6 – 60335-2-70 CEI:2004
Le texte anglais de cette norme est issu des documents 61H/164/FDIS et 61H/169/RVD. Le
rapport de vote 61H/169/RVD donne toute information sur le vote ayant abouti à l'approbation
de cette norme.
La version française de cette norme n’a pas été soumise au vote.
La présente partie 2 doit être utilisée conjointement avec la dernière édition de la CEI 60335-
1 et ses amendements. Elle a été établie sur la base de la quatrième édition (2001) de cette
norme.
NOTE 1 L’expression «Partie 1» utilisée dans la présente norme fait référence à la CEI 60335-1.
La présente partie 2 complète ou modifie les articles correspondants de la CEI 60335-1 de
façon à transformer cette publication en norme CEI: Règles de sécurité pour les machines à
traire électriques.
Lorsqu'un paragraphe particulier de la partie 1 n'est pas mentionné dans cette partie 2, ce
paragraphe s'applique pour autant qu’il est raisonnable. Lorsque la présente norme spécifie
"addition", "modification" ou "remplacement", le texte correspondant de la Partie 1 doit être
adapté en conséquence.
NOTE 2 Le système de numérotation suivant est utilisé:
– paragraphes, tableaux et figures: ceux qui sont numérotés à partir de 101 sont complémentaires à ceux de la
Partie 1;
– notes: à l’exception de celles qui sont dans un nouveau paragraphe ou de celles qui concernent des notes de
la Partie 1, les notes sont numérotées à partir de 101, y compris celles des articles ou paragraphes qui sont
modifiés ou remplacés;
– les annexes supplémentaires sont appelées AA, BB, etc.
NOTE 3 Les caractères d'imprimerie suivants sont utilisés:
– prescriptions: caractères romains;
– modalités d'essais: caractères italiques;
– notes: petits caractères romains.
Les mots en gras dans le texte sont définis à l'Article 3. Lorsqu'une définition concerne un adjectif, l'adjectif et le
nom associé figurent également en gras.
Le comité a décidé que le contenu de cette publication ne sera pas modifié avant 2007.
A cette date, la publication sera
• reconduite;
• supprimée;
• remplacée par une édition révisée, ou
• amendée.
Les différences suivantes existent dans les pays indiqués ci-après.
– 25.7: Les câbles d'alimentation sous gaine ordinaire de polychlorure de vinyle sont
autorisés (Australie, Nouvelle Zélande).
60335-2-70 IEC:2004 – 7 –
The text of this part of IEC 60335 is based on the following documents:
FDIS Report on voting
61H/164/FDIS 61H/169/RVD
Full information on the voting for the approval of this standard can be found in the report on
voting indicated in the above Table.
This part 2 is to be used in conjunction with the latest edition of IEC 60335-1 and its
amendments. It was established on the basis of the fourth edition (2001) of that standard.
NOTE 1 When “Part 1” is mentioned in this standard, it refers to IEC 60335-1.
This part 2 supplements or modifies the corresponding clauses in IEC 60335-1, so as to
convert that publication into the IEC standard: Safety requirements for 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 in Part 1 is to be adapted accordingly.
NOTE 2 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, including
those in a replaced clause or subclause;
– additional annexes are lettered AA, BB, etc.
NOTE 3 The following print types are used:
– requirements: in roman type
– test specifications: 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 associated noun are also in bold.
The committee has decided that the contents of this publication will remain unchanged until
2007. At this date the publication will be
• reconfirmed;
• withdrawn;
• replaced by a revised edition, or
• amended.
The following differences exist in the countries indicated below:
– 25.7: Ordinary PVC sheathed supply cords are permitted (Australia, New Zealand).
The French version of this standard has not been voted upon.
– 8 – 60335-2-70 CEI:2004
INTRODUCTION
Il a été considéré en établissant la présente Norme internationale que l'exécution de ses
dispositions était confiée à des personnes expérimentées et ayant une qualification
appropriée.
Cette norme reconnaît le niveau de protection internationalement accepté contre les risques
électriques, mécaniques, thermiques, liés au feu et au rayonnement des appareils, lorsqu'ils
fonctionnent comme en usage normal en tenant compte des instructions du fabricant. Elle
couvre également les situations anormales auxquelles on peut s'attendre dans la pratique.
Cette norme tient compte autant que possible des prescriptions de la CEI 60364, de façon à
rester compatible avec les règles d'installation quand l’appareil est raccordé au réseau
d’alimentation. Cependant, des règles nationales d'installation peuvent être différentes.
Si un appareil compris dans le domaine d’application de cette norme comporte également des
fonctions qui sont couvertes par une autre partie 2 de la CEI 60335, la partie 2 corres-
pondante est appliquée à chaque fonction séparément, dans la limite du raisonnable. Si cela
est applicable, on tient compte de l’influence d’une fonction sur les autres fonctions.
Cette norme est une norme de famille de produits traitant de la sécurité d’appareils et a
préséance sur les normes horizontales et génériques couvrant le même sujet.
Un appareil conforme au texte de la présente norme ne sera pas nécessairement jugé
conforme aux principes de sécurité de la norme si, lorsqu'il est examiné et soumis aux essais,
il apparaît qu'il présente d'autres caractéristiques qui compromettent le niveau de sécurité
visé par ces prescriptions.
Un appareil utilisant des matériaux ou présentant des modes de construction différents de
ceux décrits dans les prescriptions de cette norme peut être examiné et essayé en fonction de
l'objectif poursuivi par ces prescriptions et, s'il est jugé pratiquement équivalent, il peut être
estimé conforme aux principes de sécurité de la norme.
60335-2-70 IEC:2004 – 9 –
INTRODUCTION
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 hazards such
as electrical, mechanical, thermal, fire and radiation of appliances when operated as in normal
use taking into account the manufacturer's instructions. It also covers abnormal situations that
can be expected in practice.
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 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.
This stan
...
IEC 60335-2-70
Edition 2.1 2007-05
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Household and similar electrical appliances – Safety –
Part 2-70: Particular requirements for milking machines
Appareils électrodomestiques et analogues – Sécurité –
Partie 2-70: Règles particulières pour les machines à traire
All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by
any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from either IEC or
IEC's member National Committee in the country of the requester.
If you have any questions about IEC copyright or have an enquiry about obtaining additional rights to this publication,
please contact the address below or your local IEC member National Committee for further information.
Droits de reproduction réservés. Sauf indication contraire, aucune partie de cette publication ne peut être reproduite
ni utilisée sous quelque forme que ce soit et par aucun procédé, électronique ou mécanique, y compris la photocopie
et les microfilms, sans l'accord écrit de la CEI ou du Comité national de la CEI du pays du demandeur.
Si vous avez des questions sur le copyright de la CEI ou si vous désirez obtenir des droits supplémentaires sur cette
publication, utilisez les coordonnées ci-après ou contactez le Comité national de la CEI de votre pays de résidence.
IEC Central Office
3, rue de Varembé
CH-1211 Geneva 20
Switzerland
Email: inmail@iec.ch
Web: www.iec.ch
About the IEC
The International Electrotechnical Commission (IEC) is the leading global organization that prepares and publishes
International Standards for all electrical, electronic and related technologies.
About IEC publications
The technical content of IEC publications is kept under constant review by the IEC. Please make sure that you have the
latest edition, a corrigenda or an amendment might have been published.
ƒ Catalogue of IEC publications: www.iec.ch/searchpub
The IEC on-line Catalogue enables you to search by a variety of criteria (reference number, text, technical committee,…).
It also gives information on projects, withdrawn and replaced publications.
ƒ IEC Just Published: www.iec.ch/online_news/justpub
Stay up to date on all new IEC publications. Just Published details twice a month all new publications released. Available
on-line and also by email.
ƒ Electropedia: www.electropedia.org
The world's leading online dictionary of electronic and electrical terms containing more than 20 000 terms and definitions
in English and French, with equivalent terms in additional languages. Also known as the International Electrotechnical
Vocabulary online.
ƒ Customer Service Centre: www.iec.ch/webstore/custserv
If you wish to give us your feedback on this publication or need further assistance, please visit the Customer Service
Centre FAQ or contact us:
Email: csc@iec.ch
Tel.: +41 22 919 02 11
Fax: +41 22 919 03 00
A propos de la CEI
La Commission Electrotechnique Internationale (CEI) est la première organisation mondiale qui élabore et publie des
normes internationales pour tout ce qui a trait à l'électricité, à l'électronique et aux technologies apparentées.
A propos des publications CEI
Le contenu technique des publications de la CEI est constamment revu. Veuillez vous assurer que vous possédez
l’édition la plus récente, un corrigendum ou amendement peut avoir été publié.
ƒ Catalogue des publications de la CEI: www.iec.ch/searchpub/cur_fut-f.htm
Le Catalogue en-ligne de la CEI vous permet d’effectuer des recherches en utilisant différents critères (numéro de référence,
texte, comité d’études,…). Il donne aussi des informations sur les projets et les publications retirées ou remplacées.
ƒ Just Published CEI: www.iec.ch/online_news/justpub
Restez informé sur les nouvelles publications de la CEI. Just Published détaille deux fois par mois les nouvelles
publications parues. Disponible en-ligne et aussi par email.
ƒ Electropedia: www.electropedia.org
Le premier dictionnaire en ligne au monde de termes électroniques et électriques. Il contient plus de 20 000 termes et
définitions en anglais et en français, ainsi que les termes équivalents dans les langues additionnelles. Egalement appelé
Vocabulaire Electrotechnique International en ligne.
ƒ Service Clients: www.iec.ch/webstore/custserv/custserv_entry-f.htm
Si vous désirez nous donner des commentaires sur cette publication ou si vous avez des questions, visitez le FAQ du
Service clients ou contactez-nous:
Email: csc@iec.ch
Tél.: +41 22 919 02 11
Fax: +41 22 919 03 00
IEC 60335-2-70
Edition 2.1 2007-05
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Household and similar electrical appliances – Safety –
Part 2-70: Particular requirements for milking machines
Appareils électrodomestiques et analogues – Sécurité –
Partie 2-70: Règles particulières pour les machines à traire
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
PRICE CODE
INTERNATIONALE
CF
CODE PRIX
ICS 65.060.99 ISBN 2-8318-9086-1
– 2 – 60335-2-70 © IEC:2002+A1:2007
CONTENTS
FOREWORD.3
INTRODUCTION.5
1 Scope.6
2 Normative references.6
3 Definitions.6
4 General requirement.7
5 General conditions for the tests .7
6 Classification.8
7 Marking and instructions.8
8 Protection against access to live parts.10
9 Starting of motor-operated appliances .10
10 Power input and current .10
11 Heating.10
12 Void.10
13 Leakage current and electric strength at operating temperature.10
14 Transient overvoltages .10
15 Moisture resistance.11
16 Leakage current and electric strength.11
17 Overload protection of transformers and associated circuits .11
18 Endurance.11
19 Abnormal operation.11
20 Stability and mechanical hazards .12
21 Mechanical strength.12
22 Construction.12
23 Internal wiring.12
24 Components.12
25 Supply connection and external flexible cords .12
26 Terminals for external conductors.12
27 Provision for earthing .13
28 Screws and connections .13
29 Clearances, creepage distances and solid insulation .13
30 Resistance to heat and fire.13
31 Resistance to rusting.13
32 Radiation, toxicity and similar hazards.13
Annexes .14
Annex AA (informative) Examples of milking machines .14
Bibliography.18
Figure AA.1 – Example of a bucket or direct-to-can milking machine .14
Figure AA.2 – Example of a pipeline milking machine .15
Figure AA.3 – Example of a recorder milking machine .16
Figure AA.4 – Example of an independent air and milk transport milking machine.17
60335-2-70 © IEC:2002+A1:2007 – 3 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION
___________
HOUSEHOLD AND SIMILAR ELECTRICAL APPLIANCES –
SAFETY –
Part 2-70: Particular requirements for milking machines
FOREWORD
1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising
all national electrotechnical committees (IEC National Committees). The object of IEC is to promote
international co-operation on all questions concerning standardization in the electrical and electronic fields. To
this end and in addition to other activities, IEC publishes International Standards, Technical Specifications,
Technical Reports, Publicly Available Specifications (PAS) and Guides (hereafter referred to as “IEC
Publication(s)”). Their preparation is entrusted to technical committees; any IEC National Committee interested
in the subject dealt with may participate in this preparatory work. International, governmental and non-
governmental organizations liaising with the IEC also participate in this preparation. IEC collaborates closely
with the International Organization for Standardization (ISO) in accordance with conditions determined by
agreement between the two organizations.
2) The formal decisions or agreements of IEC on technical matters express, as nearly as possible, an international
consensus of opinion on the relevant subjects since each technical committee has representation from all
interested IEC National Committees.
3) IEC Publications have the form of recommendations for international use and are accepted by IEC National
Committees in that sense. While all reasonable efforts are made to ensure that the technical content of IEC
Publications is accurate, IEC cannot be held responsible for the way in which they are used or for any
misinterpretation by any end user.
4) In order to promote international uniformity, IEC National Committees undertake to apply IEC Publications
transparently to the maximum extent possible in their national and regional publications. Any divergence
between any IEC Publication and the corresponding national or regional publication shall be clearly indicated in
the latter.
5) IEC provides no marking procedure to indicate its approval and cannot be rendered responsible for any
equipment declared to be in conformity with an IEC Publication.
6) All users should ensure that they have the latest edition of this publication.
7) No liability shall attach to IEC or its directors, employees, servants or agents including individual experts and
members of its technical committees and IEC National Committees for any personal injury, property damage or
other damage of any nature whatsoever, whether direct or indirect, or for costs (including legal fees) and
expenses arising out of the publication, use of, or reliance upon, this IEC Publication or any other IEC
Publications.
8) Attention is drawn to the Normative references cited in this publication. Use of the referenced publications is
indispensable for the correct application of this publication.
9) Attention is drawn to the possibility that some of the elements of this IEC Publication may be the subject of
patent rights. IEC shall not be held responsible for identifying any or all such patent rights.
This part of International Standard IEC 60335 has been prepared by sub-committee 61H:
Safety of electrically-operated farm appliances, of IEC technical committee 61: Safety of
household and similar electrical appliances.
This consolidated version of IEC 60335-2-70 consists of the second edition (2002)
[documents 61H/164/FDIS and 61H/169/RVD] and its amendment 1 (2007) [documents
61H/234/CDV and 61H/239/RVC].
The technical content is therefore identical to the base edition and its amendment(s) and has
been prepared for user convenience.
It bears the edition number 2.1.
A vertical line in the margin shows where the base publication has been modified by
amendment 1.
– 4 – 60335-2-70 © IEC:2002+A1:2007
The French version of this standard has not been voted upon.
This part 2 is to be used in conjunction with the latest edition of IEC 60335-1 and its
amendments. It was established on the basis of the fourth edition (2001) of that standard.
NOTE 1 When “Part 1” is mentioned in this standard, it refers to IEC 60335-1.
This part 2 supplements or modifies the corresponding clauses in IEC 60335-1, so as to
convert that publication into the IEC standard: Safety requirements for 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 in Part 1 is to be adapted accordingly.
NOTE 2 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, including
those in a replaced clause or subclause;
– additional annexes are lettered AA, BB, etc.
NOTE 3 The following print types are used:
– requirements: in roman type
test specifications: 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 associated noun are also in bold.
The following differences exist in the countries indicated below:
– 25.7: Ordinary PVC sheathed supply cords are permitted (Australia, New Zealand).
The committee has decided that the contents of the base publication and its amendments will
remain unchanged until the maintenance result date indicated on the IEC web site under
"http://webstore.iec.ch" in the data related to the specific publication. At this date,
the publication will be
• reconfirmed,
• withdrawn,
• replaced by a revised edition, or
• amended.
60335-2-70 © IEC:2002+A1:2007 – 5 –
INTRODUCTION
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 hazards such
as electrical, mechanical, thermal, fire and radiation of appliances when operated as in
normal use taking into account the manufacturer's instructions. It also covers abnormal
situations that can be expected in practice and takes into account the way in which
electromagnetic phenomena can 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 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 include 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 general
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
consideration 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 standards.
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 employing 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.
– 6 – 60335-2-70 © IEC:2002+A1:2007
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 for 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 milking 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 cases 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 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 protection 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 of Part 1 is applicable except as follows.
60335-2-70 © IEC:2002+A1:2007 – 7 –
3.1.9 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 of the vacuum pump;
– during milking the vacuum pump, the pulsation system and the releaser milk pump are
operated continuously according to the manufacturer's instructions,
– during cleaning the vacuum pump, the pulsation system and the releaser milk pump
and cleaning system are operated continuously according to the manufacturer's
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 replicated in an installation so that more
than one animal may be milked at one time
3.104
vacuum pump
air pump that produces a vacuum in the system
3.105
pulsation system
system in which cyclic pressure changes, initiated either pneumatically or electrically, are
produced in the chambers of the milking units
3.106
releaser milk pump
device for pumping milk out of the vacuum system
3.107
rated vacuum
vacuum assigned to the vacuum pump or pulsation system by the manufacturer
4 General requirement
This clause of Part 1 is applicable.
5 General conditions for the tests
This clause of Part 1 is applicable except as follows.
– 8 – 60335-2-70 © IEC:2002+A1:2007
5.2 Addition:
The manufacturer shall provide a suitable test-assembly and installation instructions to enable
the milking machine or its sub-assemblies to be tested.
5.101 Where tests are specified in this standard that require the milking machine to be
operated under normal operation, the tests are to be carried out for each of the normal
operation conditions given for milking and cleaning operations.
6 Classification
This clause of Part 1 is applicable except as follows.
6.1 Replacement
Milking machines or sub-assemblies shall be of class I, class II or class III. with respect to
protection against electric shock.
Class III milking machines or sub-assemblies shall have a rated voltage not exceeding
24 V.
Compliance is checked by inspection and by the relevant tests.
6.2 Addition:
Parts of a milking machine or sub-assembly that contain electrical components and that
may be cleaned with a water jet according to the instructions, shall be at least IPX6. Other
electrical parts shall be at least IPX4.
7 Marking and instructions
This clause of Part 1 is applicable except as follows.
7.1 Addition:
Milking machines or sub-assemblies that are not marked IPX6 and that are installed
according to the manufacturer's instructions, in areas where water jet cleaning is likely, shall
be marked with the substance of “DO NOT HOSE” or with symbol ISO 7000-0073 combined
with the prohibition sign of ISO 3864-1, except for colours.
Vacuum pumps and pulsation systems shall be marked with the rated vacuum in kPa.
60335-2-70 © IEC:2002+A1:2007 – 9 –
7.6 Addition:
Do not hose
NOTE This symbol incorporates symbol ISO 7000-0073 combined with the
prohibition sign of ISO 3864-1, except for colours.
7.12 Addition:
The milking machine shall be furnished with instructions that contain all details necessary for
maintaining and operating the machine and for replacing spare parts. In particular, details
shall be given of:
– on how to clean the milking machine assembly on completion of installation;
– the frequency of maintenance procedures and details of all parts requiring replacement or
adjustment;
– the reference numbers of all parts and, where applicable, sub-assemblies used in the
installation.
The manufacturers of sub-assemblies shall provide appropriate instructions for user
maintenance of their sub-assemblies.
If the “Do not hose” symbol is marked on the appliance, its meaning shall be explained in the
instructions.
Modification:
The instructions concerning persons (including children) with reduced physical, sensory or
mental capabilities, or lack of experience and knowledge and children playing with the
appliance are not required.
7.12.1 Addition:
The manufacturer of the milking machine shall provide instructions that shall include the
substance of the following:
– a wiring diagram;
– that the installation shall be integrate into an effective equipotential bonding system;
– that parts which are not marked IPX6 shall be installed in a location where they are not
likely to be cleaned with the aid of a high pressure water jet;
– that the installation is to be installed according to the relevant section of the wiring rules.
NOTE 101 Attention is drawn to IEC 60364-7-705.
The manufacturers of sub-assemblies shall provide appropriate instructions for installation of
their sub-assemblies.
– 10 – 60335-2-70 © IEC:2002+A1:2007
7.14 Addition:
Markings required by the addition to 7.1 shall have a height not less than:
– 5 mm for headlines;
– 3 mm for other lettering.
The height of the “Do not hose” symbol shall be at least 25 mm.
7.15 Addition:
Each separate sub-assembly shall be marked with the relevant markings.
The “Do not hose” symbol shall be visible after the appliance has been installed.
8 Protection against access to live parts
This clause of Part 1 is applicable.
9 Starting of motor-operated appliances
This clause of Part 1 is not applicable.
10 Power input and current
This clause of Part 1 is applicable.
11 Heating
This clause of Part 1 is applicable except as follows.
11.7 Replacement:
Appliances are operated as follows
– during milking, until steady conditions are established;
– during cleaning, for the maximum time specified in the instructions.
12 Void
13 Leakage current and electric strength at operating temperature
This clause of Part 1 is applicable.
14 Transient overvoltages
This clause of Part 1 is applicable.
60335-2-70 © IEC:2002+A1:2007 – 11 –
15 Moisture resistance
This clause of Part 1 is applicable.
16 Leakage current and electric strength
This clause of Part 1 is applicable.
17 Overload protection of transformers and associated circuits
This clause of Part 1 is applicable.
18 Endurance
This clause of Part 1 is not applicable.
19 Abnormal operation
This clause of Part 1 is applicable except as follows.
19.1 Addition:
The tests of 19.2 and 19.3 are replaced by the test of 19.101.
19.7 Addition:
Moving parts of vacuum pumps are locked as long as is necessary to obtain steady
conditions.
19.101 The milking machine is operated under normal operation and supplied at rated
voltage.
Any operation, or any defect that may be expected in normal use is applied. Only one fault
condition is reproduced at a time, the tests being made consecutively. During the tests, the
temperature of windings shall not exceed the values shown in Table 8.
NOTE 1 Examples of fault conditions are:
– a programme controller stopping in any position;
– disconnection and reconnection of one or more phases of the supply during any part of the programme;
– open-circuiting or short-circuiting of electrical components such as resistors, capacitors, inductors and the like;
– failure of magnetic valves;
– disconnection of the water supply;
– disconnection of the cleaning-water supply.
NOTE 2 In general, tests are limited to those cases that may be expected to give the most unfavourable results.
NOTE 3 For the purpose of these tests, thermal controls are not short-circuited.
– 12 – 60335-2-70 © IEC:2002+A1:2007
20 Stability and mechanical hazards
This clause of Part 1 is applicable.
21 Mechanical strength
This clause of Part 1 is applicable except as follows.
21.1 Modification:
The impact energy is increased to 1 J.
22 Construction
This clause of Part 1 is applicable except as follows.
22.1 Addition:
Enclosures of motors that are intended for installation in non-milking areas where a dusty
environment exists shall be at least of IP4X construction. Enclosures of other electrical parts
intended to be installed in such areas shall be at least of IP5X construction.
22.33 Addition:
NOTE 101 Liquids in milking machines are regarded as accessible conducting liquids.
23 Internal wiring
This clause of Part 1 is applicable.
24 Components
This clause of Part 1 is applicable
25 Supply connection and external flexible cords
This clause of Part 1 is applicable except as follows.
25.7 Replacement:
Supply cords shall not be lighter than ordinary polychloroprene sheathed cord (code
designation 60245 IEC 57).
Compliance is checked by inspection.
26 Terminals for external conductors
This clause of Part 1 is applicable.
60335-2-70 © IEC:2002+A1:2007 – 13 –
27 Provision for earthing
This clause of Part 1 is applicable except as follows.
27.2 Addition:
Milking machines and their sub-assemblies shall be provided with a terminal for the
connection of an external equipotential bonding conductor. This terminal shall be in effective
contact with all fixed exposed metal parts of the milking machine or sub-assembly, and
shall allow the connection of a conductor having a cross-sectional area of up to 10 mm². It
shall be located in a position convenient for the connection of the bonding conductor after
installation of the milking machine or its sub-assemblies.
NOTE 101 Small fixed exposed metal parts, for example name plates and the like, are not required to be in
electrical contact with the terminal.
28 Screws and connections
This clause of Part 1 is applicable.
29 Clearances, creepage distances and solid insulation
This clause of Part 1 is applicable.
30 Resistance to heat and fire
This clause of Part 1 is applicable except as follows.
30.2.2 Not applicable
31 Resistance to rusting
This clause of Part 1 is applicable.
32 Radiation, toxicity and similar hazards
This clause of Part 1 is applicable.
– 14 – 60335-2-70 © IEC:2002+A1:2007
Annexes
The annexes of Part 1 are applicable except as follows.
Annex AA
(informative)
Examples of milking machines
Extract from ISO 3918.
1 3 2 4 5 1
A1
Vr
Vp
Pe
7 8
13 10 12 11
IEC 808/02
Key
1 Airline
2 Interceptor
3 Regulator
4 Vacuum gauge
5 Vacuum tap
6 Vacuum tube
7 Pulsator
8 Bucket or transport can
9 Long pulse tube
10 Long milk tube
11 Teatcups
12 Claw
13 Vacuum pump
A1 Connection point for air flow meter
Vr, Vp Connection points for measuring vacuum
Pe Connection point for measuring exhaust pressure
Figure AA.1 – Example of a bucket or direct-to-can milking machine
60335-2-70 © IEC:2002+A1:2007 – 15 –
142356 7819 012
A2
Vr
A1
Vp Vm
Pe
18 17 16 15 14
IEC 809/02
Key
1 Main airline
2 Interceptor
3 Distribution tank (optional)
4 Regulator
5 Pulsator airline
6 Vacuum gauge
7 Sanitary trap
8 Receiver airline
9 Receiver
10 Milkline
11 Long milk tube
12 Pulsator
13 Long pulse tube
14 Teatcups
15 Claw
16 Releaser milk pump
17 Delivery line
18 Vacuum pump
A1, A2 Connection points for air flow meter
Vm, Vr, Vp Connection points for measuring vacuum
Pe Connection point for measuring exhaust pressure
Figure AA.2 – Example of a pipeline milking machine
– 16 – 60335-2-70 © IEC:2002+A1:2007
142 3 5 6 8 9 7 110
A2
Vr
A1
Vm
Vp
Pe
20 19 18 12 15 17 16
IEC 810/02
Key
1 Main airline
2 Interceptor
3 Distribution tank (optional)
4 Regulator
5 Vacuum gauge
6 Sanitary trap
7 Milking vacuum line
8 Receiver airline
9 Receiver
10 Milk transfer line
11 Milking vacuum tube
12 Recorder jar
13 Long milk tube
14 Pulsator
15 Long pulse tube
16 Teatcups
17 Claw
18 Releaser milk pump
19 Delivery line
20 Vacuum pump
A1, A2 Connection points for air flow meter
Vm, Vr, Vp Connection points for measuring vacuum
Pe Connection point for measuring exhaust pressure
Figure AA.3 – Example of a recorder milking machine
60335-2-70 © IEC:2002+A1:2007 – 17 –
IEC 811/02
Key
1 Pulsator airline
2 Milking vacuum line
3 Milk transfer line
4 Long milk tube
5 Milking vacuum tube
6 Pulsator
7 Long pulse tube
8 Teatcups
9 Claw
Figure AA.4 – Example of an independent air and milk transport milking machine
– 18 – 60335-2-70 © IEC:2002+A1:2007
Bibliography
The bibliography of Part 1 is applicable except as follows.
Addition:
IEC 60364-7-705, Low-voltage electrical installations – Part 7-705: Requirements for special
installations or locations – Agricultural and horticultural premises
ISO 3918:1996, Milking machine installations – Vocabulary
ISO 13732-1, Ergonomics of the thermal environment – Methods for the assessment of human
responses to contact with surfaces – Part 1: Hot surfaces
––––––––––
– 20 – 60335-2-70 © CEI:2002+A1:2007
SOMMAIRE
AVANT-PROPOS.21
INTRODUCTION.23
1 Domaine d’application.24
2 Références normatives.24
3 Définitions.24
4 Prescriptions générales.25
5 Conditions générales d’essais .25
6 Classification.26
7 Marquage et indications .26
8 Protection contre l’accès aux parties actives .28
9 Démarrage des appareils à moteur.28
10 Puissance et courant .28
11 Echauffements.28
12 Vacant.28
13 Courant de fuite et rigidité diélectrique à la température de régime .28
14 Surtensions transitoires.28
15 Résistance à l’humidité.29
16 Courant de fuite et rigidité diélectrique .29
17 Protection contre la surcharge des transformateurs et des circuits associés.29
18 Endurance.29
19 Fonctionnement anormal.29
20 Stabilité et dangers mécaniques .30
21 Résistance mécanique.30
22 Construction.30
23 Conducteurs internes .30
24 Composants.30
25 Raccordement au réseau et câbles souples extérieurs .30
26 Bornes pour conducteurs externes .30
27 Dispositions en vue de la mise à la terre .31
28 Vis et connexions.31
29 Distances dans l’air, lignes de fuite et isolation solide .31
30 Résistance à la chaleur et au feu.31
31 Protection contre la rouille.31
32 Rayonnement, toxicité et dangers analogues.31
Annexes .32
Annexe AA (informative) Exemples de machines à traire .32
Bibliographie.36
Figure AA.1 – Exemple de machine à traire avec pot trayeur ou directement en bidon.32
Figure AA.2 – Exemple de machine à traire avec lactoduc .33
Figure AA.3 – Exemple de machine à traire avec récipient de contrôle .34
Figure AA.4 – Exemple de machine à traire avec circuit indépendant.35
60335-2-70 © CEI:2002+A1:2007 – 21 –
COMMISSION ÉLECTROTECHNIQUE INTERNATIONALE
___________
APPAREILS ÉLECTRODOMESTIQUES ET ANALOGUES –
SÉCURITÉ –
Partie 2-70: Règles particulières pour les machines à traire
AVANT-PROPOS
1) La Commission Electrotechnique Internationale (CEI) est une organisation mondiale de normalisation
composée de l'ensemble des comités électrotechniques nationaux (Comités nationaux de la CEI). La CEI a
pour objet de favoriser la coopération internationale pour toutes les questions de normalisation dans les
domaines de l'électricité et de l'électronique. A cet effet, la CEI – entre autres activités – publie des Normes
internationales, des Spécifications techniques, des Rapports techniques, des Spécifications accessibles au
public (PAS) et des Guides (ci-après dénommés "Publication(s) de la CEI"). Leur élaboration est confiée à des
comités d'études, aux travaux desquels tout Comité national intéressé par le sujet traité peut participer. Les
organisations internationales, gouvernementales et non gouvernementales, en liaison avec la CEI, participent
également aux travaux. La CEI collabore étroitement avec l'Organisation Internationale de Normalisation (ISO),
selon des conditions fixées par accord entre les deux organisations.
2) Les décisions ou accords officiels de la CEI concernant les questions techniques représentent, dans la mesure
du possible, un accord international sur les sujets étudiés, étant donné que les Comités nationaux de la CEI
intéressés sont représentés dans chaque comité d’études.
3) Les Publications de la CEI se présentent sous la forme de recommandations internationales et sont agréées
comme telles par les Comités nationaux de la CEI. Tous les efforts raisonnables sont entrepris afin que la CEI
s'assure de l'exactitude du contenu technique de ses publications; la CEI ne peut pas être tenue responsable
de l'éventuelle mauvaise utilisation ou interprétation qui en est faite par un quelconque utilisateur final.
4) Dans le but d'encourager l'uniformité internationale, les Comités nationaux de la CEI s'engagent, dans toute la
mesure possible, à appliquer de façon transparente les Publications de la CEI dans leurs publications
nationales et régionales. Toutes divergences entre toutes Publications de la CEI et toutes publications
nationales ou régionales correspondantes doivent être indiquées en termes clairs dans ces dernières.
5) La CEI n’a prévu aucune procédure de marquage valant indication d’approbation et n'engage pas sa
responsabilité pour les équipements déclarés conformes à une de ses Publications.
6) Tous les utilisateurs doivent s'assurer qu'ils sont en possession de la dernière édition de cette publication.
7) Aucune responsabilité ne doit être imputée à la CEI, à ses administrateurs, employés, auxiliaires ou
mandataires, y compris ses experts particuliers et les membres de ses comités d'études et des Comités
nationaux de la CEI, pour tout préjudice causé en cas de dommages corporels et matériels, ou de tout autre
dommage de quelque nature que ce soit, directe ou indirecte, ou pour supporter les coûts (y compris les frais
de justice) et les dépenses découlant de la publication ou de l'utilisation de cette Publication de la CEI ou de
toute autre Publication de la CEI, ou au crédit qui lui est accordé.
8) L'attention est attirée sur les références normatives citées dans cette publication. L'utilisation de publications
référencées est obligatoire pour une application correcte de la présente publication.
9) L’attention est attirée sur le fait que certains des éléments de la présente Publication de la CEI peuvent faire
l’objet de droits de propriété intellectuelle ou de droits analogues. La CEI ne saurait être tenue pour
responsable de ne pas avoir identifié de tels droits de propriété et de ne pas avoir signalé leur existence.
La présente partie de la Norme internationale CEI 60335 a été établie par le sous-comité 61H:
Sécurité des appareils électriques employés à la ferme, du comité d'études 61 de la CEI: Sécurité
des appareils électrodomestiques et analogues.
Cette version consolidée de la CEI 60335-2-70 comprend la deuxième édition (2002)
[documents 61H/164/FDIS et 61H/169/RVD] et son amendement 1 (2007) [documents
61H/234/CDV et 61H/239/RVC].
Le contenu technique de cette version consolidée est donc identique à celui de l'édition de base
et à son (ses) amendement(s); cette version a été préparée par commodité pour l'utilisateur.
Elle porte le numéro d'édition 2.1.
Une ligne verticale dans la marge indique où la publication de base a été modifiée p
...
IEC 60335-2-70 ®
Edition 2.2 2013-03
CONSOLIDATED VERSION
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
Household and similar electrical appliances – Safety –
Part 2-70: Particular requirements for milking machines
Appareils électrodomestiques et analogues – Sécurité –
Partie 2-70: Règles particulières pour les machines à traire
All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form
or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from
either IEC or IEC's member National Committee in the country of the requester.
If you have any questions about IEC copyright or have an enquiry about obtaining additional rights to this publication,
please contact the address below or your local IEC member National Committee for further information.
Droits de reproduction réservés. Sauf indication contraire, aucune partie de cette publication ne peut être reproduite ni
utilisée sous quelque forme que ce soit et par aucun procédé, électronique ou mécanique, y compris la photocopie et les
microfilms, sans l'accord écrit de la CEI ou du Comité national de la CEI du pays du demandeur.
Si vous avez des questions sur le copyright de la CEI ou si vous désirez obtenir des droits supplémentaires sur cette
publication, utilisez les coordonnées ci-après ou contactez le Comité national de la CEI de votre pays de résidence.
IEC Central Office Tel.: +41 22 919 02 11
3, rue de Varembé Fax: +41 22 919 03 00
CH-1211 Geneva 20 info@iec.ch
Switzerland www.iec.ch
About the IEC
The International Electrotechnical Commission (IEC) is the leading global organization that prepares and publishes
International Standards for all electrical, electronic and related technologies.
About IEC publications
The technical content of IEC publications is kept under constant review by the IEC. Please make sure that you have the
latest edition, a corrigenda or an amendment might have been published.
Useful links:
IEC publications search - www.iec.ch/searchpub Electropedia - www.electropedia.org
The advanced search enables you to find IEC publications The world's leading online dictionary of electronic and
by a variety of criteria (reference number, text, technical electrical terms containing more than 30 000 terms and
committee,…). definitions in English and French, with equivalent terms in
It also gives information on projects, replaced and additional languages. Also known as the International
withdrawn publications. Electrotechnical Vocabulary (IEV) on-line.
IEC Just Published - webstore.iec.ch/justpublished Customer Service Centre - webstore.iec.ch/csc
Stay up to date on all new IEC publications. Just Published If you wish to give us your feedback on this publication
details all new publications released. Available on-line and or need further assistance, please contact the
also once a month by email. Customer Service Centre: csc@iec.ch.
A propos de la CEI
La Commission Electrotechnique Internationale (CEI) est la première organisation mondiale qui élabore et publie des
Normes internationales pour tout ce qui a trait à l'électricité, à l'électronique et aux technologies apparentées.
A propos des publications CEI
Le contenu technique des publications de la CEI est constamment revu. Veuillez vous assurer que vous possédez
l’édition la plus récente, un corrigendum ou amendement peut avoir été publié.
Liens utiles:
Recherche de publications CEI - www.iec.ch/searchpub Electropedia - www.electropedia.org
La recherche avancée vous permet de trouver des Le premier dictionnaire en ligne au monde de termes
publications CEI en utilisant différents critères (numéro de électroniques et électriques. Il contient plus de 30 000
référence, texte, comité d’études,…). termes et définitions en anglais et en français, ainsi que
Elle donne aussi des informations sur les projets et les les termes équivalents dans les langues additionnelles.
publications remplacées ou retirées. Egalement appelé Vocabulaire Electrotechnique
International (VEI) en ligne.
Just Published CEI - webstore.iec.ch/justpublished
Service Clients - webstore.iec.ch/csc
Restez informé sur les nouvelles publications de la CEI.
Just Published détaille les nouvelles publications parues. Si vous désirez nous donner des commentaires sur
Disponible en ligne et aussi une fois par mois par email. cette publication ou si vous avez des questions
contactez-nous: csc@iec.ch.
IEC 60335-2-70 ®
Edition 2.2 2013-03
CONSOLIDATED VERSION
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
Household and similar electrical appliances – Safety –
Part 2-70: Particular requirements for milking machines
Appareils électrodomestiques et analogues – Sécurité –
Partie 2-70: Règles particulières pour les machines à traire
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 65.060.99 ISBN 978-2-8322-0688-1
– 2 – 60335-2-70 IEC:2002+A1:2007
+A2:2013
CONTENTS
FOREWORD . 3
INTRODUCTION . 5
1 Scope . 6
2 Normative references . 6
3 Terms and definitions . 6
4 General requirement . 7
5 General conditions for the tests . 7
6 Classification . 8
7 Marking and instructions . 8
8 Protection against access to live parts . 10
9 Starting of motor-operated appliances . 10
10 Power input and current . 10
11 Heating . 10
12 Void. 10
13 Leakage current and electric strength at operating temperature . 10
14 Transient overvoltages . 10
15 Moisture resistance . 11
16 Leakage current and electric strength . 11
17 Overload protection of transformers and associated circuits . 11
18 Endurance . 11
19 Abnormal operation . 11
20 Stability and mechanical hazards . 12
21 Mechanical strength . 12
22 Construction . 12
23 Internal wiring . 12
24 Components . 12
25 Supply connection and external flexible cords . 12
26 Terminals for external conductors . 12
27 Provision for earthing . 13
28 Screws and connections . 13
29 Clearances, creepage distances and solid insulation . 13
30 Resistance to heat and fire . 13
31 Resistance to rusting . 13
32 Radiation, toxicity and similar hazards . 13
Annexes . 14
Bibliography . 15
60335-2-70 IEC:2002+A1:2007 – 3 –
+A2:2013
INTERNATIONAL ELECTROTECHNICAL COMMISSION
___________
HOUSEHOLD AND SIMILAR ELECTRICAL APPLIANCES –
SAFETY –
Part 2-70: Particular requirements for milking machines
FOREWORD
1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising
all national electrotechnical committees (IEC National Committees). The object of IEC is to promote
international co-operation on all questions concerning standardization in the electrical and electronic fields. To
this end and in addition to other activities, IEC publishes International Standards, Technical Specifications,
Technical Reports, Publicly Available Specifications (PAS) and Guides (hereafter referred to as “IEC
Publication(s)”). Their preparation is entrusted to technical committees; any IEC National Committee interested
in the subject dealt with may participate in this preparatory work. International, governmental and non-
governmental organizations liaising with the IEC also participate in this preparation. IEC collaborates closely
with the International Organization for Standardization (ISO) in accordance with conditions determined by
agreement between the two organizations.
2) The formal decisions or agreements of IEC on technical matters express, as nearly as possible, an international
consensus of opinion on the relevant subjects since each technical committee has representation from all
interested IEC National Committees.
3) IEC Publications have the form of recommendations for international use and are accepted by IEC National
Committees in that sense. While all reasonable efforts are made to ensure that the technical content of IEC
Publications is accurate, IEC cannot be held responsible for the way in which they are used or for any
misinterpretation by any end user.
4) In order to promote international uniformity, IEC National Committees undertake to apply IEC Publications
transparently to the maximum extent possible in their national and regional publications. Any divergence
between any IEC Publication and the corresponding national or regional publication shall be clearly indicated in
the latter.
5) IEC provides no marking procedure to indicate its approval and cannot be rendered responsible for any
equipment declared to be in conformity with an IEC Publication.
6) All users should ensure that they have the latest edition of this publication.
7) No liability shall attach to IEC or its directors, employees, servants or agents including individual experts and
members of its technical committees and IEC National Committees for any personal injury, property damage or
other damage of any nature whatsoever, whether direct or indirect, or for costs (including legal fees) and
expenses arising out of the publication, use of, or reliance upon, this IEC Publication or any other IEC
Publications.
8) Attention is drawn to the Normative references cited in this publication. Use of the referenced publications is
indispensable for the correct application of this publication.
9) Attention is drawn to the possibility that some of the elements of this IEC Publication may be the subject of
patent rights. IEC shall not be held responsible for identifying any or all such patent rights.
This consolidated version of the official IEC Standard and its amendments has been prepared
for user convenience.
IEC 60335-2-70 edition 2.2 contains the second edition (2002) [documents 61H/164/FDIS and
61H/169/RVD], its amendment 1 (2007) [documents 61H/234/CDV and 61H/239/RVC] and its
amendment 2 (2013) [documents 61H/286/FDIS and 61H/288/RVD].
A vertical line in the margin shows where the base publication has been modified by
amendments 1 and 2.
This part of International Standard IEC 60335 has been prepared by sub-committee 61H: Safety of
electrically-operated farm appliances, of IEC technical committee 61: Safety of household and similar
electrical appliances.
– 4 – 60335-2-70 IEC:2002+A1:2007
+A2:2013
The French version of this standard has not been voted upon.
This part 2 is to be used in conjunction with the latest edition of IEC 60335-1 and its
amendments. It was established on the basis of the fourth edition (2001) of that standard.
NOTE 1 When “Part 1” is mentioned in this standard, it refers to IEC 60335-1.
This part 2 supplements or modifies the corresponding clauses in IEC 60335-1, so as to
convert that publication into the IEC standard: Safety requirements for 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 in Part 1 is to be adapted accordingly.
NOTE 2 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, including
those in a replaced clause or subclause;
– additional annexes are lettered AA, BB, etc.
NOTE 3 The following print types are used:
– requirements: in roman type
– test specifications: 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 associated noun are also in bold.
The following differences exist in the countries indicated below:
– 25.7: Ordinary PVC sheathed supply cords are permitted (Australia, New Zealand).
The committee has decided that the contents of the base publication and its amendments will
remain unchanged until the maintenance result date indicated on the IEC web site under
"http://webstore.iec.ch" in the data related to the specific publication. At this date,
the publication will be
• reconfirmed,
• withdrawn,
• replaced by a revised edition, or
• amended.
NOTE 4 The attention of National Committees is drawn to the fact that equipment manufacturers and testing
organizations may need a transitional period following publication of a new, amended or revised IEC publication in
which to make products in accordance with the new requirements and to equip themselves for conducting new or
revised tests.
It is the recommendation of the committee that the content of the amendment 2 be adopted for implementation
nationally not earlier than 12 months or later than 36 months from the date of publication.
IMPORTANT – The “colour inside” logo on the cover page of this publication indicates
that it contains colours which are considered to be useful for the correct understanding
of its contents. Users should therefore print this publication using a colour printer.
60335-2-70 IEC:2002+A1:2007 – 5 –
+A2:2013
INTRODUCTION
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 hazards such
as electrical, mechanical, thermal, fire and radiation of appliances when operated as in
normal use taking into account the manufacturer's instructions. It also covers abnormal
situations that can be expected in practice and takes into account the way in which
electromagnetic phenomena can 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 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 include 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 general
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
consideration 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 standards.
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 employing 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.
– 6 – 60335-2-70 IEC:2002+A1:2007
+A2:2013
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 for 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 milking 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.
NOTE 103 The upper limit for the rated voltage of 250 V single-phase may be exceeded in cases 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 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 protection of labour, the national water supply authorities and similar authorities.
2 Normative references
This clause of Part 1 is applicable.
2 ISO 7010:2011, Graphical symbols – Safety colours and safety signs – Registered safety
signs
3 Terms and definitions
This clause of Part 1 is applicable except as follows.
60335-2-70 IEC:2002+A1:2007 – 7 –
+A2:2013
3.1.9 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 of the vacuum pump;
– during milking the vacuum pump, the pulsation system and the releaser milk pump are
operated continuously according to the manufacturer's instructions,
– during cleaning the vacuum pump, the pulsation system and the releaser milk pump
and cleaning system are operated continuously according to the manufacturer's
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 replicated in an installation so that more
than one animal may be milked at one time
3.104
vacuum pump
air pump that produces a vacuum in the system
3.105
pulsation system
system in which cyclic pressure changes, initiated either pneumatically or electrically, are
produced in the chambers of the milking units
3.106
releaser milk pump
device for pumping milk out of the vacuum system
3.107
rated vacuum
vacuum assigned to the vacuum pump or pulsation system by the manufacturer
4 General requirement
This clause of Part 1 is applicable.
5 General conditions for the tests
This clause of Part 1 is applicable except as follows.
– 8 – 60335-2-70 IEC:2002+A1:2007
+A2:2013
5.2 Addition:
The manufacturer shall provide a suitable test-assembly and installation instructions to enable
the milking machine or its sub-assemblies to be tested.
5.101 Where tests are specified in this standard that require the milking machine to be
operated under normal operation, the tests are to be carried out for each of the normal
operation conditions given for milking and cleaning operations.
6 Classification
This clause of Part 1 is applicable except as follows.
6.1 Replacement
Milking machines or sub-assemblies shall be of class I, class II or class III. with respect to
protection against electric shock.
Class III milking machines or sub-assemblies shall have a rated voltage not exceeding
24 V.
Compliance is checked by inspection and by the relevant tests.
6.2 Addition:
Parts of a milking machine or sub-assembly that contain electrical components and that
may be cleaned with a water jet according to the instructions, shall be at least IPX6. Other
electrical parts shall be at least IPX4.
7 Marking and instructions
This clause of Part 1 is applicable except as follows.
7.1 Addition:
2 Milking machines or sub-assemblies that are not marked IPX6 and that are installed
according to the manufacturer's instructions, in areas where water jet cleaning is likely, shall
be marked with the substance of “DO NOT SPRAY WITH WATER” or with symbol ISO 7010 –
P016.
Vacuum pumps and pulsation systems shall be marked with the rated vacuum in kPa.
60335-2-70 IEC:2002+A1:2007 – 9 –
+A2:2013
7.6 Addition:
[symbol ISO 7010 – P016] Do not spray with water
7.12 Addition:
The milking machine shall be furnished with instructions that contain all details necessary for
maintaining and operating the machine and for replacing spare parts. In particular, details
shall be given of:
– on how to clean the milking machine assembly on completion of installation;
– the frequency of maintenance procedures and details of all parts requiring replacement or
adjustment;
– the reference numbers of all parts and, where applicable, sub-assemblies used in the
installation.
The manufacturers of sub-assemblies shall provide appropriate instructions for user
maintenance of their sub-assemblies.
2 If the symbol ISO 7010 – P016 is marked on the appliance, its meaning shall be explained.
Modification:
The instructions concerning persons (including children) with reduced physical, sensory or
mental capabilities, or lack of experience and knowledge and children playing with the
appliance are not required.
7.12.1 Addition:
The manufacturer of the milking machine shall provide instructions that shall include the
substance of the following:
– a wiring diagram;
– that the installation shall be integrate into an effective equipotential bonding system;
– that parts which are not marked IPX6 shall be installed in a location where they are not
likely to be cleaned with the aid of a high pressure water jet;
– that the installation is to be installed according to the relevant section of the wiring rules.
NOTE 101 Attention is drawn to IEC 60364-7-705.
The manufacturers of sub-assemblies shall provide appropriate instructions for installation of
their sub-assemblies.
– 10 – 60335-2-70 IEC:2002+A1:2007
+A2:2013
7.14 Addition:
Markings required by the addition to 7.1 shall have a height not less than:
– 5 mm for headlines;
– 3 mm for other lettering.
2 If symbol ISO 7010 – P016 is marked on the appliance, the outer diameter of the circle shall
be shall be at least 25 mm.
7.15 Addition:
Each separate sub-assembly shall be marked with the relevant markings.
2 If symbol ISO 7010 – P016 is marked on the appliance, it shall be visible after the appliance
has been installed.
8 Protection against access to live parts
This clause of Part 1 is applicable.
9 Starting of motor-operated appliances
This clause of Part 1 is not applicable.
10 Power input and current
This clause of Part 1 is applicable.
11 Heating
This clause of Part 1 is applicable except as follows.
11.7 Replacement:
Appliances are operated as follows
– during milking, until steady conditions are established;
– during cleaning, for the maximum time specified in the instructions.
12 Void
13 Leakage current and electric strength at operating temperature
This clause of Part 1 is applicable.
14 Transient overvoltages
This clause of Part 1 is applicable.
60335-2-70 IEC:2002+A1:2007 – 11 –
+A2:2013
15 Moisture resistance
This clause of Part 1 is applicable.
16 Leakage current and electric strength
This clause of Part 1 is applicable.
17 Overload protection of transformers and associated circuits
This clause of Part 1 is applicable.
18 Endurance
This clause of Part 1 is not applicable.
19 Abnormal operation
This clause of Part 1 is applicable except as follows.
19.1 Addition:
The tests of 19.2 and 19.3 are replaced by the test of 19.101.
19.7 Addition:
Moving parts of vacuum pumps are locked as long as is necessary to obtain steady
conditions.
19.101 The milking machine is operated under normal operation and supplied at rated
voltage.
Any operation, or any defect that may be expected in normal use is applied. Only one fault
condition is reproduced at a time, the tests being made consecutively. During the tests, the
temperature of windings shall not exceed the values shown in Table 8.
NOTE 1 Examples of fault conditions are:
– a programme controller stopping in any position;
– disconnection and reconnection of one or more phases of the supply during any part of the programme;
– open-circuiting or short-circuiting of electrical components such as resistors, capacitors, inductors and the like;
– failure of magnetic valves;
– disconnection of the water supply;
– disconnection of the cleaning-water supply.
NOTE 2 In general, tests are limited to those cases that may be expected to give the most unfavourable results.
NOTE 3 For the purpose of these tests, thermal controls are not short-circuited.
– 12 – 60335-2-70 IEC:2002+A1:2007
+A2:2013
20 Stability and mechanical hazards
This clause of Part 1 is applicable.
21 Mechanical strength
This clause of Part 1 is applicable except as follows.
21.1 Modification:
The impact energy is increased to 1 J.
22 Construction
This clause of Part 1 is applicable except as follows.
22.1 Addition:
Enclosures of motors that are intended for installation in non-milking areas where a dusty
environment exists shall be at least of IP4X construction. Enclosures of other electrical parts
intended to be installed in such areas shall be at least of IP5X construction.
22.33 Addition:
NOTE 101 Liquids in milking machines are regarded as accessible conducting liquids.
23 Internal wiring
This clause of Part 1 is applicable.
24 Components
This clause of Part 1 is applicable
25 Supply connection and external flexible cords
This clause of Part 1 is applicable except as follows.
25.7 Replacement:
Supply cords shall not be lighter than ordinary polychloroprene sheathed cord (code
designation 60245 IEC 57).
Compliance is checked by inspection.
26 Terminals for external conductors
This clause of Part 1 is applicable.
60335-2-70 IEC:2002+A1:2007 – 13 –
+A2:2013
27 Provision for earthing
This clause of Part 1 is applicable except as follows.
27.2 Addition:
Milking machines and their sub-assemblies shall be provided with a terminal for the
connection of an external equipotential bonding conductor. This terminal shall be in effective
contact with all fixed exposed metal parts of the milking machine or sub-assembly, and
shall allow the connection of a conductor having a cross-sectional area of up to 10 mm². It
shall be located in a position convenient for the connection of the bonding conductor after
installation of the milking machine or its sub-assemblies.
NOTE 101 Small fixed exposed metal parts, for example name plates and the like, are not required to be in
elect
...
Questions, Comments and Discussion
Ask us and Technical Secretary will try to provide an answer. You can facilitate discussion about the standard in here.
Loading comments...