Electromechanical elementary relays - Part 1: General and safety requirements

IEC 61810-1:2015 applies to electromechanical elementary relays (non-specified time all-or-nothing relays) for incorporation into low voltage equipment (circuits up to 1 000 V alternate current or 1 500 V direct current). It defines the basic functional and safety requirements and safety-related aspects for applications in all areas of electrical engineering or electronics, such as: general industrial equipment, electrical facilities, electrical machines, electrical appliances for household and similar use, information technology and business equipment, building automation equipment, automation equipment, electrical installation equipment, medical equipment, control equipment, telecommunications, vehicles, transportation (e.g. railways). Compliance with the requirements of this standard is verified by the type tests indicated. In case the application of a relay determines additional requirements exceeding those specified in this standard, the relay should be assessed in line with this application in accordance with the relevant IEC standard(s). This fourth edition cancels and replaces the third edition published in 2008. This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition:
- two main test procedures were introduced: procedure A, reflecting the procedure known from Edition 3 of this standard and procedure B, reflecting the assessment according to North American requirements;
- inclusion of dedicated device application tests especially relevant for applications in the North American Market (see Clause D.1);
- introduction of testing under single mounting condition;
- clarification of insulation requirements after endurance testing;
- inclusion of provisions for basic safety requirements;
- update of references.
The contents of the corrigendum of June 2017 and of February 2018 have been included in this copy.

Relais électromécaniques élémentaires - Partie 1: Exigences générales et de sécurité

L'IEC 61810-1:2015 s'applique aux relais électromécaniques élémentaires (relais de tout ou rien à temps non spécifié) destinés à être incorporés dans des matériels basse tension (circuits jusqu'à 1 000 V en courant alternatif ou 1 500 V en courant continu). Elle définit les exigences fondamentales fonctionnelles et de sécurité ainsi que les aspects liés à la sécurité, destinés à être appliqués dans tous les domaines de l'électrotechnique ou de l'électronique, tels que: l'équipement industriel général, les installations électriques, les machines électriques, les appareils électriques pour usages domestiques et analogues, les matériels de traitement de l'information et les matériels de bureau, les automatismes du bâtiment, les appareils d'automatisme, les appareils pour installations électriques, les appareils médicaux, le matériel de contrôle, les télécommunications, les véhicules, le transport (par exemple, chemins de fer). La conformité aux exigences de la présente norme est vérifiée par les essais de type indiqués. Au cas où l'application d'un relais détermine des exigences supplémentaires dépassant celles spécifiées dans la présente norme, il convient que le relais soit évalué par rapport à cette application, conformément à la ou aux normes IEC correspondantes. Cette quatrième édition annule et remplace la troisième édition parue en 2008. Cette édition constitue une révision technique. Cette édition inclut les modifications techniques majeures suivantes par rapport à l'édition précédente:
- introduction de deux procédures d essai principales: procédure A qui reflète la procédure de l'édition 3 de la présente norme et procédure B qui reflète l'évaluation réalisée conformément aux exigences nord-américaines;
- inclusion d'essais pour des appareils dédiés à des applications particulièrement appropriées aux applications sur le marché nord-américain (voir Article D.1);
- introduction des essais dans des conditions de montage simple;
- clarification des exigences d'isolation après les essais d'endurance;
- inclusion de dispositions applicables aux exigences de sécurité de base;
- mise à jour des références.
Le contenu du corrigendum de juin 2017 et de février 2018 a été pris en considération dans cet exemplaire.

General Information

Status
Published
Publication Date
24-Feb-2015
Current Stage
PPUB - Publication issued
Start Date
25-Feb-2015
Completion Date
25-Feb-2015
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IEC 61810-1
Edition 4.0 2015-02
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
Electromechanical elementary relays –
Part 1: General and safety requirements
Relais électromécaniques élémentaires –
Partie 1: Exigences générales et de sécurité
IEC 61810-1:2015-02(en-fr)
---------------------- Page: 1 ----------------------
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---------------------- Page: 2 ----------------------
IEC 61810-1
Edition 4.0 2015-02
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
Electromechanical elementary relays –
Part 1: General and safety requirements
Relais électromécaniques élémentaires –
Partie 1: Exigences générales et de sécurité
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 29.120.70 ISBN 978-2-8322-2322-2

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

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® Registered trademark of the International Electrotechnical Commission
Marque déposée de la Commission Electrotechnique Internationale
---------------------- Page: 3 ----------------------
– 2 – IEC 61810-1:2015 © IEC 2015
CONTENTS

FOREWORD ........................................................................................................................... 7

1 Scope .............................................................................................................................. 9

2 Normative references ...................................................................................................... 9

3 Terms and definitions .................................................................................................... 11

3.1 Terms and definitions related to general terms ...................................................... 11

3.2 Terms and definitions of relay types ...................................................................... 12

3.3 Terms and definitions related to conditions and operations ................................... 13

3.4 Terms and definitions of operating values ............................................................. 15

3.5 Terms and definitions related to contacts .............................................................. 16

3.6 Terms and definitions related to accessories......................................................... 19

3.7 Terms and definitions related to insulation ............................................................ 19

4 Influence quantities ....................................................................................................... 21

5 Rated values ................................................................................................................. 22

5.1 General ................................................................................................................. 22

5.2 Rated coil voltage/rated coil voltage range ............................................................ 22

5.3 Operative range .................................................................................................... 22

5.4 Release ................................................................................................................ 23

5.5 Reset .................................................................................................................... 23

5.6 Electrical endurance ............................................................................................. 23

5.7 Frequency of operation ......................................................................................... 23

5.8 Contact loads ........................................................................................................ 23

5.9 Ambient temperature ............................................................................................ 24

5.10 Categories of environmental protection ................................................................. 24

5.11 Duty factor ............................................................................................................ 24

6 General provisions for testing ........................................................................................ 24

7 Documentation and marking .......................................................................................... 27

7.1 Data ...................................................................................................................... 27

7.2 Additional data ...................................................................................................... 28

7.3 Marking ................................................................................................................. 28

7.4 Symbols ................................................................................................................ 29

8 Heating .......................................................................................................................... 29

8.1 Requirements ....................................................................................................... 29

8.2 Test set-up ........................................................................................................... 30

8.3 Test procedure...................................................................................................... 31

8.4 Terminals .............................................................................................................. 31

8.4.1 General ......................................................................................................... 31

8.4.2 Solder terminals ............................................................................................ 32

8.4.3 Flat quick-connect terminations ..................................................................... 32

8.4.4 Screw and screwless type terminals .............................................................. 33

8.4.5 Alternative termination types ......................................................................... 33

8.4.6 Sockets ......................................................................................................... 33

9 Basic operating function ................................................................................................ 33

9.1 General test conditions ......................................................................................... 33

9.2 Operate (monostable relays) ................................................................................. 33

9.2.1 Operate with (constant) coil voltage ............................................................... 34

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IEC 61810-1:2015 © IEC 2015 – 3 –

9.2.2 Operate with PWM and/or other operating methods ....................................... 35

9.3 Operate/reset (bistable relays) .............................................................................. 35

10 Dielectric strength ......................................................................................................... 35

10.1 Preconditioning ..................................................................................................... 35

10.2 Dielectric strength ................................................................................................. 36

10.3 Special cases for test procedure B ........................................................................ 37

11 Electrical endurance ...................................................................................................... 38

11.1 General ................................................................................................................. 38

11.2 Overload and endurance test ................................................................................ 39

11.3 Failure and malfunction criteria ............................................................................. 39

11.4 Final dielectric test ................................................................................................ 39

12 Mechanical endurance ................................................................................................... 41

13 Clearances, creepage distances and solid insulation ..................................................... 42

13.1 General provisions ................................................................................................ 42

13.2 Clearances and creepage distances...................................................................... 43

13.3 Solid insulation ..................................................................................................... 47

13.4 Accessible surfaces .............................................................................................. 47

13.5 Solid insulation in the coil assembly as part of the insulation coordination ............ 48

14 Terminations ................................................................................................................. 48

14.1 General ................................................................................................................. 48

14.2 Screw terminals and screwless terminals .............................................................. 48

14.3 Flat quick-connect terminations ............................................................................. 48

14.4 Solder terminals .................................................................................................... 48

14.4.1 Resistance to soldering heat .......................................................................... 48

14.4.2 Solder pins .................................................................................................... 49

14.4.3 Terminals for surface mounting (SMD) ........................................................... 49

14.4.4 Other solder terminations (e.g. soldering lugs) ............................................... 49

14.5 Sockets ................................................................................................................. 49

14.6 Alternative termination types ................................................................................. 49

15 Sealing .......................................................................................................................... 50

16 Heat and fire resistance ................................................................................................. 50

Annex A (normative) Explanations regarding relays ............................................................. 51

Annex B (informative) Inductive contact loads ...................................................................... 54

Annex C (normative) Test set-up ......................................................................................... 58

C.1 Test circuit ............................................................................................................ 58

C.2 Description and requirements ............................................................................... 60

C.2.1 Power source for coil energization ................................................................. 60

C.2.2 Switching (coil control) device ....................................................................... 60

C.2.3 Power source for contact loads ...................................................................... 60

C.2.4 Control device ............................................................................................... 60

C.2.5 Measuring and indicating device .................................................................... 61

C.3 Test schematic...................................................................................................... 61

C.4 Contact load categories (CC) ................................................................................ 61

C.5 Special loads ........................................................................................................ 61

Annex D (informative) Special loads .................................................................................... 62

D.1 Dedicated device application tests and test sequences ......................................... 62

D.2 Special loads for telecom and signal relays ........................................................... 68

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– 4 – IEC 61810-1:2015 © IEC 2015

D.3 Special loads with inrush current .......................................................................... 69

Annex E (normative) Heating test arrangement .................................................................... 72

Annex F (normative) Measurement of clearances and creepage distances ........................... 73

Annex G (normative) Relation between rated impulse voltage, nominal voltage and

overvoltage category ............................................................................................................ 78

Annex H (normative) Pollution degrees ................................................................................ 80

Annex I (normative) Proof tracking test ................................................................................ 81

Annex J (informative) Schematic diagram of families of terminations ................................... 82

Annex K (normative) Glow-wire test ..................................................................................... 83

Annex L (normative) Ball pressure test ................................................................................ 84

Annex M (informative) Needle flame test .............................................................................. 86

Annex N (informative) Resistance for standard soldering processes .................................... 87

N.1 General ................................................................................................................. 87

N.2 Double wave soldering process ............................................................................. 87

N.2.1 Profile ............................................................................................................ 87

N.2.2 Conditions ..................................................................................................... 87

N.3 SMT and through hole reflow (THR) soldering process.......................................... 88

N.3.1 Profile ............................................................................................................ 88

N.3.2 Conditions ..................................................................................................... 88

N.4 Evaluation ............................................................................................................. 88

Annex O (informative) Risk assessment ............................................................................... 89

O.1 General ................................................................................................................. 89

O.2 Risk assessment procedure .................................................................................. 89

O.3 Achieving tolerable risk ......................................................................................... 90

O.4 An application of risk assessment procedures (proposal for the user) ................... 91

Alphabetical list of terms ....................................................................................................... 93

Bibliography .......................................................................................................................... 94

Figure A.1 – Diagram explaining terms related to monostable relays .................................... 51

Figure A.2 – Example explaining terms relating to contacts................................................... 52

Figure A.3 – Explanations regarding the operative range of the coil voltage .......................... 52

Figure A.4 – Explanation regarding the preconditioning and testing of the operate

voltage according to 5.3.1 (Class 1) and 9.2 ......................................................................... 53

Figure A.5 – Explanation regarding the preconditioning and testing of the operate

voltage according to 5.3.2 and 9.2 ........................................................................................ 53

Figure C.1 – Standard test circuit .......................................................................................... 58

Figure C.2 – Functional block diagram .................................................................................. 59

Figure C.3 – Contact load categories .................................................................................... 61

Figure D.1 – Typical test circuit diagram ............................................................................... 67

Figure D.2 – Waveform per synthetic measurement of pulse width and peak current ............. 68

Figure D.3 – Circuit for cable load ......................................................................................... 68

Figure D.4 – Test circuit for inrush current loads (e.g. capacitive loads and simulated

tungsten filament lamp loads) – AC circuits........................................................................... 69

Figure D.5 – Example for a tungsten filament lamp test for relays rated 10/100 A/250

V~/2,5 ms ............................................................................................................................. 70

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IEC 61810-1:2015 © IEC 2015 – 5 –

Figure D.6 – Test circuit for inrush current loads (e.g. capacitive loads and simulated

lamp loads) – DC circuits ...................................................................................................... 70

Figure D.7 – Test circuit for inrush current loads (e.g. simulated fluorescent lamp

loads) with power-factor correction ....................................................................................... 71

Figure E.1 – Test arrangement ............................................................................................. 72

Figure F.1 – Example 1 ......................................................................................................... 73

Figure F.2 – Example 2 ......................................................................................................... 73

Figure F.3 – Example 3 ......................................................................................................... 74

Figure F.4 – Example 4 ......................................................................................................... 74

Figure F.5 – Example 5a and 5b ........................................................................................... 74

Figure F.6 – Example 6a and 6b ........................................................................................... 75

Figure F.7 – Example 7a and 7b ........................................................................................... 75

Figure F.8 – Example 8a and 8b ........................................................................................... 76

Figure F.9 – Example 9 ......................................................................................................... 76

Figure F.10 – Example 10 ..................................................................................................... 77

Figure F.11 – Example 11 ..................................................................................................... 77

Figure J.1 – Schematic diagram of families of terminations ................................................... 82

Figure L.1 – Ball pressure test apparatus .............................................................................. 85

Figure N.1 – Double wave soldering profile ........................................................................... 87

Figure N.2 – SMT and through hole soldering profile ............................................................ 88

Figure O.1 – Iterative process of risk assessment and risk reduction .................................... 89

Figure O.2 – Risk reduction .................................................................................................. 90

Table 1 – Reference values of influence quantities ............................................................... 22

Table 2 – Categories of protection ........................................................................................ 24

Table 3 – Type testing .......................................................................................................... 26

Table 4 – Routine tests ......................................................................................................... 26

Table 5 – Number of test samples ......................................................................................... 26

Table 6 – Required relay data (1 of 2) ................................................................................... 27

Table 7 – Symbols ................................................................................................................ 29

Table 8 – Examples for indication of rated values ................................................................. 29

Table 9 – Thermal classification ............................................................................................ 30

Table 10 – Cross-sectional areas and lengths of conductors dependent on the current

carried by the terminal .......................................................................................................... 32

Table 11 – Operate and release with constant coil voltages .................................................. 34

Table 12 – Operate and release with PWM and/or other operating methods .......................... 35

Table 13 – Dielectric strength – AC ....................................................................................... 36

Table 14 – Dielectric strength – DC ...................................................................................... 37

Table 15 – Electrical endurance test procedures ................................................................... 39

Table 16 – Schematics for contact loading ............................................................................ 40

Table 17 – Provisions for the dimensioning of clearances and creepage distances ............... 43

Table 18 – Minimum clearances in air for insulation coordination .......................................... 45

Table 19 – Material groups ................................................................................................... 45

Table 20 – Minimum creepage distances for equipment subject to long-term stresses .......... 46

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– 6 – IEC 61810-1:2015 © IEC 2015

Table 21 – Rated insulation voltage according to supply system voltage ............................... 47

Table 22 – Test conditions for test Tb ................................................................................... 49

Table B.1 – Verification of the making and breaking capacity (abnormal conditions) ............. 55

Table B.2 – Verification of the making and breaking capacity (normal conditions) ................. 56

Table B.3 – Electrical endurance test .................................................................................... 56

Table B.4 – Contact rating designations and equivalency to utilization categories ................. 57

Table C.1 – Characteristics of power sources for contact loads ............................................ 59

Table C.2 – Standard contact load characteristics ................................................................ 60

Table D.1 – Overload test values .......................................................................................... 62

Table D.2 – Endurance test values ....................................................................................... 63

Table D.3 – Horsepower-rated equipment full-load currents (AC) .
...

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