Appliance couplers for household and similar general purposes - Part 1: General requirements

lEC 60320-1:2015 sets the general requirements for appliance couplers for two poles and two poles with earth contact and for the connection of electrical devices for household and similar onto the mains supply. This part of lEC 60320 is also valid for appliance inlets/appliance outlets integrated or incorporated in appliances. The rated voltage does not exceed 250 V (a.c.) and the rated current does not exceed 16 A. This third edition cancels and replaces the second edition published in 2001 and Amendment 1:2007. This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition:
a) Standard sheets moved from IEC 60320-1 to IEC 60320-3.
b) Clarification of requirements for non-standardized appliance couplers.
This bilingual version (2016-11) corresponds to the monolingual English version, published in 2015-06. The French version of this standard has not been voted upon.
The contents of the corrigenda of January 2016 and May 2019 have been included in this copy.

Connecteurs pour usages domestiques et usages généraux analogues - Partie 1: Exigences générales

L'IEC 60320-1:2015 établit les exigences générales applicables aux connecteurs bipolaires et bipolaires avec contact de mise à la terre et destinés au raccordement au réseau d'alimentation des dispositifs électriques pour usages domestiques et assimilés. La présente partie de l'IEC 60320 est également valable pour les socles de connecteurs/socles femelles de connecteurs intégrés ou incorporés dans des appareils d'utilisation. La tension assignée ne dépasse pas 250 V (courant alternatif) et le courant assigné ne dépasse pas 16 A. Cette troisième édition annule et remplace la deuxième édition parue en 2001 et l'Amendement 1:2007. Cette édition constitue une révision technique. Cette édition inclut les modifications techniques majeures suivantes par rapport à l'édition précédente:
a) Feuilles de norme déplacées de l'IEC 60320-1 dans l'IEC 60320-3.
b) Clarification des exigences relatives aux connecteurs non normalisés.
La présente version bilingue (2016-11) correspond à la version anglaise monolingue publiée en 2015-06. La version française de cette norme n'a pas été soumise au vote.
Le contenu des corrigenda de janvier 2016 et mai 2019 a été intégré dans ce document.

General Information

Status
Published
Publication Date
23-Jun-2015
Technical Committee
Current Stage
PPUB - Publication issued
Start Date
24-Jun-2015
Completion Date
24-Jun-2015
Ref Project

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IEC 60320-1
Edition 3.0 2015-06
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Appliance couplers for household and similar general purposes –
Part 1: General requirements
Connecteurs pour usages domestiques et usages généraux analogues –
Partie 1: Exigences générales
IEC 60320-1:2015-06(en-fr)
---------------------- Page: 1 ----------------------
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---------------------- Page: 2 ----------------------
IEC 60320-1
Edition 3.0 2015-06
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Appliance couplers for household and similar general purposes –
Part 1: General requirements
Connecteurs pour usages domestiques et usages généraux analogues –
Partie 1: Exigences générales
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 29.120.30 ISBN 978-2-8322-3746-5

Warning! Make sure that you obtained this publication from an authorized distributor.

Attention! Veuillez vous assurer que vous avez obtenu cette publication via un distributeur agréé.

® Registered trademark of the International Electrotechnical Commission
Marque déposée de la Commission Electrotechnique Internationale
---------------------- Page: 3 ----------------------
– 2 – IEC 60320-1:2015  IEC 2015
CONTENTS

FOREWORD ........................................................................................................................... 6

1 Scope .............................................................................................................................. 8

2 Normative references ...................................................................................................... 8

3 Terms and definitions ...................................................................................................... 9

4 General requirements .................................................................................................... 12

5 General notes on tests .................................................................................................. 13

5.1 General ................................................................................................................. 13

5.2 Test samples ........................................................................................................ 13

5.3 Failures ................................................................................................................ 13

5.4 Routine tests......................................................................................................... 13

6 Standard ratings ............................................................................................................ 14

7 Classification of appliance couplers ............................................................................... 14

8 Marking ......................................................................................................................... 14

8.1 General ................................................................................................................. 14

8.2 Additional markings .............................................................................................. 14

8.3 Appliance couplers for class II equipment ............................................................. 15

8.4 Symbols or alphanumeric notations ....................................................................... 15

8.5 Legibility of markings ............................................................................................ 15

8.6 Terminal markings and wiring instructions ............................................................. 15

8.7 Durability .............................................................................................................. 16

8.8 Test and inspection ............................................................................................... 16

9 Dimensions and compatibility ........................................................................................ 16

9.1 General ................................................................................................................. 16

9.2 Single‐pole connections ........................................................................................ 16

9.3 Compatibility ......................................................................................................... 16

9.4 Dimensions for standardized appliance couplers ................................................... 17

9.5 Dimensions for non-standardized appliance couplers ............................................ 17

10 Protection against electric shock ................................................................................... 17

10.1 Accessibility of live parts ....................................................................................... 17

10.2 Protection against single pole connection ............................................................. 18

10.3 Protection against access to live parts .................................................................. 18

10.4 External parts ....................................................................................................... 18

10.5 Shrouds ................................................................................................................ 18

11 Provision for earthing .................................................................................................... 18

12 Terminals and terminations ............................................................................................ 18

12.1 General ................................................................................................................. 18

12.2 Rewirable appliance couplers ............................................................................... 19

12.3 Non‐rewirable appliance couplers ......................................................................... 19

13 Construction .................................................................................................................. 19

13.1 Risk of accidental contact ..................................................................................... 19

13.2 Contact positions .................................................................................................. 19

13.3 Parts covering live parts ....................................................................................... 19

13.4 Pin construction .................................................................................................... 20

13.4.1 Prevention of rotation .................................................................................... 20

---------------------- Page: 4 ----------------------
IEC 60320-1:2015  IEC 2015 – 3 –

13.4.2 Pin retention .................................................................................................. 20

13.4.3 Non‐solid pins................................................................................................ 20

13.5 Contact pressure .................................................................................................. 21

13.6 Enclosure ............................................................................................................. 21

13.6.1 General ......................................................................................................... 21

13.6.2 Rewirable connectors/plug connectors ........................................................... 21

13.6.3 Non-rewirable connectors/plug connectors .................................................... 22

13.7 Earth connection ................................................................................................... 22

13.8 Location of terminals and terminations .................................................................. 23

13.8.1 General ......................................................................................................... 23

13.8.2 Free wire test for rewirable accessories ......................................................... 23

13.8.3 Free wire test for non-rewirable non-moulded-on accessories ........................ 23

13.8.4 Free wire verification for non-rewirable moulded-on accessories ................... 24

13.9 Connectors/plug connectors without earthing contact ............................................ 24

13.10 Fuses, relays, thermostats, thermal cut-outs and switches .................................... 24

14 Moisture resistance ....................................................................................................... 24

15 Insulation resistance and electric strength ..................................................................... 25

15.1 General ................................................................................................................. 25

15.2 Insulation resistance ............................................................................................. 26

15.3 Dielectric strength ................................................................................................. 27

16 Forces necessary to insert and to withdraw the connector/appliance outlet .................... 28

16.1 General ................................................................................................................. 28

16.2 Verification of the maximum withdrawal force ........................................................ 28

16.3 Verification of the minimum withdrawal force ......................................................... 30

17 Operation of contacts .................................................................................................... 31

18 Resistance to heating of appliance couplers for hot conditions or very hot

conditions ...................................................................................................................... 31

18.1 General ................................................................................................................. 31

18.2 Heating test for connectors/plug connectors .......................................................... 31

18.3 Heating test for appliance inlets/appliance outlets ................................................. 32

19 Breaking capacity .......................................................................................................... 32

20 Normal operation ........................................................................................................... 34

21 Temperature rise ........................................................................................................... 34

22 Cords and their connection ............................................................................................ 35

22.1 Cords for non-rewirable connectors/plug connectors ............................................. 35

22.2 Cord anchorage .................................................................................................... 36

22.2.1 General ......................................................................................................... 36

22.2.2 Additional requirements for rewirable connectors/plug connectors ................. 36

22.2.3 Pull test for cable anchorage ......................................................................... 37

22.3 Flexing test ........................................................................................................... 39

23 Mechanical strength ...................................................................................................... 41

23.1 General ................................................................................................................. 41

23.2 Free fall test ......................................................................................................... 42

23.3 Lateral pull test ..................................................................................................... 42

23.4 Impact test ............................................................................................................ 44

23.5 Deformation test ................................................................................................... 44

23.6 Torque and pull test .............................................................................................. 45

---------------------- Page: 5 ----------------------
– 4 – IEC 60320-1:2015  IEC 2015

24 Resistance to heat and ageing....................................................................................... 45

24.1 Resistance to heat ................................................................................................ 45

24.2 Resistance to ageing ............................................................................................ 46

24.2.1 General ......................................................................................................... 46

24.2.2 Ageing test for elastomeric materials ............................................................. 46

24.2.3 Ageing test for thermoplastic materials .......................................................... 46

24.2.4 Ageing test assessment ................................................................................. 46

25 Screws, current-carrying parts and connections ............................................................. 47

25.1 General ................................................................................................................. 47

25.2 Electrical connections ........................................................................................... 48

25.3 Securement of connections ................................................................................... 48

25.4 Metallic parts ........................................................................................................ 48

26 Clearances, creepage distances and solid insulation ..................................................... 49

26.1 General ................................................................................................................. 49

26.2 Clearances ........................................................................................................... 49

26.2.1 Dimensioning ................................................................................................. 49

26.2.2 Minimum values for clearances ...................................................................... 50

26.3 Creepage distances .............................................................................................. 51

26.3.1 Dimensioning ................................................................................................. 51

26.3.2 Minimum creepage distances ......................................................................... 51

26.4 Solid insulation ..................................................................................................... 52

27 Resistance of insulating material to heat, fire and tracking ............................................ 53

27.1 Resistance to heat and fire ................................................................................... 53

27.1.1 General ......................................................................................................... 53

27.1.2 Object of the test ........................................................................................... 53

27.1.3 General description of the test ....................................................................... 53

27.1.4 Description of test apparatus ......................................................................... 53

27.1.5 Degree of severity ......................................................................................... 53

27.1.6 Verification of the thermocouple .................................................................... 54

27.1.7 Preconditioning .............................................................................................. 54

27.1.8 Initial measurements ..................................................................................... 54

27.1.9 Test procedure .............................................................................................. 54

27.1.10 Observations and measurements ................................................................... 54

27.1.11 Evaluation of test results ............................................................................... 54

27.2 Resistance to tracking ........................................................................................... 54

28 Resistance to rusting ..................................................................................................... 54

29 Electromagnetic compatibility (EMC) requirements ........................................................ 55

29.1 Immunity – Accessories not incorporating electronic components ......................... 55

29.2 Emission – Accessories not incorporating electronic components ......................... 55

Annex A (normative) Proof tracking test ............................................................................... 56

Annex B (normative) Routine tests for factory wired appliance couplers related to

safety.................................................................................................................................... 57

B.1 General ................................................................................................................. 57

B.2 Polarized systems: Phase (L) and neutral (N) – Correct connection ...................... 57

B.3 Earth (PE) continuity ............................................................................................. 58

B.4 Short-circuit/wrong connection and reduction in creepage distance

and clearance ....................................................................................................... 58

B.4.1 Accessible surface safety check .................................................................... 58

---------------------- Page: 6 ----------------------
IEC 60320-1:2015  IEC 2015 – 5 –

B.4.2 Short-circuit/wrong connection ....................................................................... 58

Annex C (normative) Test schedule ..................................................................................... 59

Annex D (informative) Comparison of typical conductor cross-sectional areas ..................... 61

Bibliography .......................................................................................................................... 62

Figure 1 – Intended use of appliance couplers ...................................................................... 10

Figure 2 – Device for testing non-solid pins .......................................................................... 21

Figure 3 – Apparatus for checking the withdrawal force ........................................................ 29

Figure 4 – Gauge for verification of the minimum withdrawal force ........................................ 30

Figure 5 – Circuit diagram for breaking capacity and normal operation tests ......................... 33

Figure 6 – Apparatus for testing the cord anchorage ............................................................. 37

Figure 7 – Apparatus for the flexing test ............................................................................... 40

Figure 8 – Example of apparatus for pulling test ................................................................... 43

Table 1 – Position of contacts ............................................................................................... 19

Table 2 – Maximum diameters of the cords ........................................................................... 26

Table 3 – Minimum insulation resistance ............................................................................... 27

Table 4 – Dielectric strength ................................................................................................. 27

Table 5 – Maximum and minimum withdrawal forces ............................................................. 28

Table 6 – Ratings for the tests of Clause 19 .......................................................................... 33

Table 7 – Ratings for the tests of Clause 20 .......................................................................... 34

Table 8 – Cords and conductors for the tests of Clause 21 ................................................... 35

Table 9 – Type and nominal cross-sectional area of cords .................................................... 36

Table 10 – Types of cord for the rewirable connector/plug connector test ............................. 38

Table 11 – Values for the lateral pulls applied ....................................................................... 44

Table 12 – Values for torque and pull forces ......................................................................... 45

Table 13 – Torque applied for the tightening and loosening test ............................................ 48

Table 14 – Rated impulse withstand voltage for appliance couplers energized directly

from the low voltage mains ................................................................................................... 50

Table 15 – Minimum clearances for basic insulation.............................................................. 51

Table 16 – Minimum creepage distances for basic and functional insulation ......................... 52

Table B.1 – Test overview ..................................................................................................... 57

Table C.1 – Test schedule .................................................................................................... 59

Table D.1 – Comparison of conductor sizes .......................................................................... 61

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– 6 – IEC 60320-1:2015  IEC 2015
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
APPLIANCE COUPLERS FOR HOUSEHOLD
AND SIMILAR GENERAL PURPOSES –
Part 1: General requirements
FOREWORD

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