IEC 60335-2-34:2021

Household and similar electrical appliances - Safety - Part 2-34: Particular requirements for motor-compressors

IEC 60335-2-34:2021 deals with the safety of sealed (hermetic and semi-hermetic type) motor-compressors, their protection and control systems, if any, which are intended for use in equipment for household and similar purposes and which conform with the standards applicable to such equipment. It applies to motor-compressors tested separately, under the most severe conditions that may be expected to occur in normal use, their rated voltage being not more than 250 V for single-phase motor-compressors and 600 V for other motor-compressors.
This standard also covers:
- multi-speed motor-compressors, that are motor-compressors, the speed of which can be set to different values;
- variable capacity motor-compressors that are motor-compressors where the capacity of the compressor is controlled at fixed speeds.
Examples of equipment which contain motor-compressors are:
- tumble dryers (IEC 60335-2-11);
- refrigerating appliances, ice-cream appliances and ice-makers (IEC 60335-2-24);
- electrical heat pumps, air-conditioners and dehumidifiers (IEC 60335-2-40);
- commercial dispensing appliances and vending machines (IEC 60335-2-75);
- commercial refrigerating appliances and ice-makers with an incorporated or remote refrigerant unit or compressor (IEC 60335-2-89);
- electrical equipment for measurement, control, and laboratory use (IEC 61010-2-011);
- professional ice-cream makers (IEC 60335-2-118);
- refrigerating systems and heat pumps – Design, construction, testing, marking and documentation (ISO 5149-2).
This standard does not supersede the requirements of standards relevant to the particular appliance in which the motor-compressor is used. However, if the motor-compressor type used complies with this standard, the tests for the motor-compressor specified in the particular appliance standard may not need to be made in the particular appliance or assembly. If the motor-compressor control system is associated with the particular appliance control system, additional tests could be necessary on the final appliance.
So far as is practical, this standard deals with the common hazards presented by motor-compressors used in appliances which are encountered by all persons in and around the home. However, it does not in general take into account:
- the use of appliances by young children or infirm persons without supervision;
- playing with the appliances by young children.
Attention is drawn to the fact that:
- for motor-compressors intended to be used in appliances in vehicles or on board ships, additional require¬ments could be necessary;
- in many countries, additional requirements are specified by the national health authorities, the national authorities responsible for the protection of labour and similar authorities.
This standard does not apply to:
- motor-compressors designed exclusively for industrial purposes;
- motor-compressors used in appliances intended to be used in locations where special conditions prevail, such as the presence of a corrosive or explosive atmosphere (dust, vapour or gas).
If motor-compressors for refrigerant R-744 used in appliances with a transcritical refrigeration system are equipped with pressure relief devices, compliance with the requirements for these devices is checked during the tests on the final appliance.
This sixth edition cancels and replaces the fifth edition published in 2012, Amendment 1:2015 and Amendment 2:2016. This edition constitutes a technical revision.
This edition includes the following significant technical changes with respect to the previous edition:
- it aligns the text with IEC 60335-1, Ed 5.2;
- application categories and tests have been extended (3.1.102, Annex AA);
- use of a motorette for winding wire compatibility tests introduced (3.8.102, Annex BB);
- height of the triangle, symbol ISO 7010 W021 has been introduced (7.14);
- some notes are converted to normative text (1, 15.3, 22.21, 23.8, 29.3.4, Figure AA.1);
- note in Subclause 6.101 bec

Appareils électrodomestiques et analogues - Sécurité - Partie 2-34: Exigences particulières pour les motocompresseurs

L'IEC 60335-2-34:2021 traite de la sécurité des motocompresseurs étanches (de type hermétique et hermétique accessible) et, le cas échéant, de leurs systèmes de protection et de commande, qui sont destinés à être utilisés sur les appareils électrodomestiques et analogues et qui sont conformes aux normes applicables à de tels matériels. Elle s'applique aux motocompresseurs soumis à l'essai séparément, dans les conditions les plus défavorables qui peuvent se produire en usage normal, dont la tension assignée est inférieure ou égale à 250 V pour les motocompresseurs monophasés et à 600 V pour les autres motocompresseurs.
La présente norme couvre également:
- les motocompresseurs à plusieurs vitesses, qui sont des motocompresseurs dont la vitesse peut être réglée sur différentes valeurs;
- les motocompresseurs à capacité variable, qui sont des motocompresseurs dont la capacité du compresseur est contrôlée à des vitesses fixes.
Des exemples d'appareils équipés de motocompresseurs sont:
- les sèche-linge (IEC 60335-2-11);
- les appareils de réfrigération, les sorbetières et les fabriques de glace (IEC 60335-2-24);
- les pompes à chaleur électriques, les climatiseurs et les déshumidificateurs (IEC 60335-2-40);
- les distributeurs commerciaux avec ou sans moyen de paiement (IEC 60335-2-75);
- les appareils de réfrigération et fabriques de glace à usage commercial avec une unité de fluide frigorigène ou un motocompresseur incorporés ou à distance (IEC 60335-2-89);
- exigences de sécurité pour les appareils électriques de mesurage, de régulation et de laboratoire – exigences particulières pour les appareils de réfrigération (IEC 61010-2-011);
- les fabriques de crème glacée à usage professionnel (IEC 60335-2-118);
- les systèmes frigorifiques et pompes à chaleur – conception, construction, essais, marquage et documentation (ISO 5149-2).
La présente norme ne remplace pas les exigences des normes applicables aux appareils dans lesquels sont utilisés les motocompresseurs. Toutefois, si le type de motocompresseur utilisé est conforme à la présente norme, il peut ne pas être nécessaire d'effectuer les essais sur l'appareil ou l'ensemble particulier pour les motocompresseurs spécifiés dans les normes applicables à ces appareils. Si le dispositif de commande du motocompresseur est associé au dispositif de commande d'un appareil particulier, il peut être nécessaire d'effectuer des essais supplémentaires sur l'appareil final.
Dans la mesure du possible, la présente norme traite des dangers courants que présentent les motocompresseurs utilisés dans des appareils et auxquels sont exposés tous les individus situés à l'intérieur et autour de l'habitation. Cependant, cette norme ne tient pas compte en général:
- de l'utilisation des appareils par de jeunes enfants ou des personnes handicapées sans surveillance;
- de l'utilisation des appareils comme jouet par de jeunes enfants.
L'attention est attirée sur le fait que:
- pour les motocompresseurs destinés à être utilisés dans des véhicules ou à bord de navires, des exigences supplémentaires peuvent être nécessaires;
- dans de nombreux pays, des exigences supplémentaires sont spécifiées par les organismes nationaux de la santé, par les organismes nationaux responsables de la protection des travailleurs et par des organismes similaires.
La présente norme ne s'applique pas:
- aux motocompresseurs prévus exclusivement pour des usages industriels;
- aux motocompresseurs utilisés dans des appareils destinés à être employés dans des locaux qui présentent des conditions particulières, telles que la présence d'une atmosphère corrosive ou explosive (poussière, vapeur ou gaz).
Cette édition inclut les modifications techniques majeures suivantes par rapport à l'édition précédente:
- le texte a été aligné sur l'IEC 60335-1, Ed 5.2;
- les catégories d'applications et les essais ont été élargis (3.1.102, Annexe AA);
- l'emploi d'une motorette a été ajouté pour les essais de compatibilité de

General Information

• Status: Published
• Publication Date: 10-Mar-2021
• ICS: 97.040.30 - Domestic refrigerating appliances
• Technical Committee: SC 61C - Safety of refrigeration appliances for household and commercial use
• Drafting Committee: MT 1 - TC 61/SC 61C/MT 1
• Current Stage: PPUB - Publication issued
• Start Date: 26-Feb-2021
• Completion Date: 11-Mar-2021

Relations

• Revises: IEC 60335-2-34:2012/AMD1:2015/COR1:2015 - Corrigendum 1 - Amendment 1 - Household and similar electrical appliances - Safety - Part 2-34: Particular requirements for motor-compressors
• Effective Date: 05-Sep-2023
• Revises: IEC 60335-2-34:2012 - Household and similar electrical appliances - Safety - Part 2-34: Particular requirements for motor-compressors
• Effective Date: 05-Sep-2023
• Revises: IEC 60335-2-34:2012/AMD1:2015 - Amendment 1 - Household and similar electrical appliances - Safety - Part 2-34: Particular requirements for motor-compressors
• Effective Date: 05-Sep-2023
• Revises: IEC 60335-2-34:2012/AMD2:2016 - Amendment 2 - Household and similar electrical appliances - Safety - Part 2-34: Particular requirements for motor-compressors
• Effective Date: 05-Sep-2023
• Revises: IEC 60335-2-34:2012/AMD2:2016/COR1:2017 - Corrigendum 1 - Amendment 2 - Household and similar electrical appliances - Safety - Part 2-34: Particular requirements for motor-compressors
• Effective Date: 05-Sep-2023

Standards Content (Sample)

IEC 60335-2-34 ®
Edition 6.0 2021-03
REDLINE VERSION
INTERNATIONAL
STANDARD
colour
inside
Household and similar electrical appliances – Safety –
Part 2-34: Particular requirements for motor-compressors

All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form
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IEC 60335-2-34 ®
Edition 6.0 2021-03
REDLINE VERSION
INTERNATIONAL
STANDARD
colour
inside
Household and similar electrical appliances – Safety –

Part 2-34: Particular requirements for motor-compressors

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
ICS 97.040.30 ISBN 978-2-8322-9573-1

– 2 – IEC 60335-2-34:2021 RLV © IEC 2021
CONTENTS
FOREWORD . 4
INTRODUCTION . 2
1 Scope . 9
2 Normative references . 10
3 Terms and definitions . 10
4 General requirement . 10
5 General conditions for the tests . 14
6 Classification . 15
7 Marking and instructions . 16
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 . 18
15 Moisture resistance . 18
16 Leakage current and electric strength . 18
17 Overload protection of transformers and associated circuits . 18
18 Endurance . 18
19 Abnormal operation . 18
20 Stability and mechanical hazards . 23
21 Mechanical strength . 23
22 Construction . 24
23 Internal wiring . 29
24 Components . 29
25 Supply connection and external flexible cords . 30
26 Terminals for external conductors . 30
27 Provision for earthing . 30
28 Screws and connections . 30
29 Clearances, creepage distances and solid insulation . 30
30 Resistance to heat and fire . 31
31 Resistance to rusting . 32
32 Radiation, toxicity and similar hazards . 32
Annexes . 33
Annex C (normative) Ageing test on motors . 33
Annex D (normative) Thermal motor protectors . 33
Annex AA (normative) Running overload tests for motor-compressors classified as
tested with Annex AA . 34
Annex BB (normative) Winding wire insulation compatibility tests . 47
Annex CC (normative) Tie cords and insulation compatibility tests . 52

Annex DD (normative) Non-sparking “n” electrical apparatus and test condition for “dc”
devices . 55
Annex EE (normative) Fatigue test . 57
Bibliography . 59

Figure 101 – Supply circuit for the locked-rotor test of a single-phase motor-
compressor . 32
Figure AA.1 – Substitute refrigeration circuit . 46
Figure BB.1 – Motorette components . 50
Figure BB.2 – Completely assembled motorette . 51

Table 101 – Minimum high side test pressures . 25
Table 102 – Minimum low side test pressures . 27
Table AA.1 – Substitute refrigeration circuit conditions for operating under running
overload conditions .
Table AA.2 – Substitute refrigeration circuit conditions for operating under maximum
load conditions .
Table AA.3 – Steps for increasing the load on the motor-compressor .
Table AA.1 – Substitute refrigeration circuit conditions for operation under

maximum load . 44
Table AA.2 – Steps for increasing the load on the motor-compressor . 45
Table BB.1 – Time temperature heating cycles . 48
Table CC.1 – Time temperature heating cycles . 53

– 4 – IEC 60335-2-34:2021 RLV © IEC 2021
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
HOUSEHOLD AND SIMILAR ELECTRICAL APPLIANCES –
SAFETY –
Part 2-34: Particular requirements for motor-compressors

FOREWORD
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IEC 60335-2-34 ®
Edition 6.0 2021-03
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
Household and similar electrical appliances – Safety –
Part 2-34: Particular requirements for motor-compressors

Appareils électrodomestiques et analogues – Sécurité –
Partie 2-34: Exigences particulières pour les motocompresseurs
All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form
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IEC 60335-2-34 ®
Edition 6.0 2021-03
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
Household and similar electrical appliances – Safety –

Part 2-34: Particular requirements for motor-compressors

Appareils électrodomestiques et analogues – Sécurité –

Partie 2-34: Exigences particulières pour les motocompresseurs

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 97.040.30 ISBN 978-2-8322-9432-1

– 2 – IEC 60335-2-34:2021 © IEC 2021
CONTENTS
FOREWORD . 4
INTRODUCTION . 7
1 Scope . 9
2 Normative references . 10
3 Terms and definitions . 10
4 General requirement . 12
5 General conditions for the tests . 12
6 Classification . 13
7 Marking and instructions . 14
8 Protection against access to live parts . 15
9 Starting of motor-operated appliances . 15
10 Power input and current . 15
11 Heating . 15
12 Void . 16
13 Leakage current and electric strength at operating temperature . 16
14 Transient overvoltages . 16
15 Moisture resistance . 16
16 Leakage current and electric strength . 16
17 Overload protection of transformers and associated circuits . 16
18 Endurance . 16
19 Abnormal operation . 16
20 Stability and mechanical hazards . 22
21 Mechanical strength . 22
22 Construction . 22
23 Internal wiring . 25
24 Components . 26
25 Supply connection and external flexible cords . 26
26 Terminals for external conductors . 26
27 Provision for earthing . 26
28 Screws and connections . 26
29 Clearances, creepage distances and solid insulation . 26
30 Resistance to heat and fire . 28
31 Resistance to rusting . 28
32 Radiation, toxicity and similar hazards . 28
Annexes . 29
Annex C (normative) Ageing test on motors . 29
Annex D (normative) Thermal motor protectors . 29
Annex AA (normative) Running overload tests for motor-compressors classified as
tested with Annex AA . 30
Annex BB (normative) Winding wire insulation compatibility tests . 34
Annex CC (normative) Tie cords and insulation compatibility tests . 38

Annex DD (normative) Non-sparking “n” electrical apparatus and test condition for “dc”
devices . 40
Annex EE (normative) Fatigue test . 41
Bibliography . 43

Figure 101 – Supply circuit for the locked-rotor test of a single-phase motor-
compressor . 28
Figure AA.1 – Substitute refrigeration circuit . 33
Figure BB.1 – Motorette components . 36
Figure BB.2 – Completely assembled motorette . 37

Table 101 – Minimum high side test pressures . 23
Table 102 – Minimum low side test pressures . 24
Table AA.1 – Substitute refrigeration circuit conditions for operation under
maximum load . 31
Table AA.2 – Steps for increasing the load on the motor-compressor . 32
Table BB.1 – Time temperature heating cycles . 35
Table CC.1 – Time temperature heating cycles . 39

– 4 – IEC 60335-2-34:2021 © IEC 2021
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
HOUSEHOLD AND SIMILAR ELECTRICAL APPLIANCES –
SAFETY –
Part 2-34: Particular requirements for motor-compressors

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 a
...