IEC 61810-1:2008

Electromechanical elementary relays - Part 1: General requirements

IEC 61810-1:2008 Applies to electromechanical elementary relays (non-specified time all-or-nothing relays) for incorporation into equipment. Defines the basic functional requirements and safety-related aspects for applications in all areas of electrical engineering or electronics. Compliance with the requirements of this standard is verified by the type tests indicated. The main changes with respect to the previous edition comprise:
- inclusion of contact load categories (same as in IEC 61810-2 and IEC 61810-7);
- clarifications concerning electrical endurance;
- inclusion of provisions for insulation coordination in accordance with the basic safety standards;
- inclusion of new annexes for the test set-up, and for special loads.

Relais électromécaniques élémentaires - Partie 1: Exigences générales

La CEI 61810-1:2008 s'applique aux relais électromécaniques élémentaires (relais de tout ou rien à temps non spécifié) destinés à être incorporés dans des matériels. Elle définit les exigences fonctionnelles fondamentales et les aspects liés à la sécurité, destinés à être appliqués dans tous les domaines de l'électrotechnique ou de l'électronique. La conformité aux exigences de la présente norme est vérifiée par les essais de type indiqués. Cette troisième édition annule et remplace la deuxième édition parue en 2003, dont elle constitue une révision technique. Les modifications pertinentes sont les suivantes:
- introduction de catégories de charges de contact (identiques à celles de la CEI 61810-2 et de la CEI 61810-7);
- précisions concernant l'endurance électrique (Article 11);
- introduction de dispositions pour la coordination de l'isolement, conformément aux normes de sécurité de base CEI 60664-3, CEI 60664-4 et CEI 60664-5 (Article 13);
- introduction de nouvelles Annexes pour le montage d'essai, pour les charges spéciales.

General Information

• Status: Published
• Publication Date: 26-Feb-2008
• ICS: 29.120.70 - Relays
• Technical Committee: TC 94 - Electrical relays
• Drafting Committee: WG 3 - TC 94/WG 3
• Current Stage: DELPUB - Deleted Publication
• Completion Date: 25-Feb-2015

Relations

• Corrected By: IEC 61810-1:2008/COR1:2010 - Corrigendum 1 - Electromechanical elementary relays - Part 1: General requirements
• Effective Date: 05-Sep-2023
• Revises: IEC 61810-1:2003 - Electromechanical elementary relays - Part 1: General and safety requirements
• Effective Date: 05-Sep-2023
• Revises: IEC 61810-1:2003/COR1:2004 - Corrigendum 1 - Electromechanical elementary relays - Part 1: General and safety requirements
• Effective Date: 05-Sep-2023
• Revised: IEC 61810-1:2015 - Electromechanical elementary relays - Part 1: General and safety requirements
• Effective Date: 05-Sep-2023

Standards Content (Sample)

IEC 61810-1
Edition 3.0 2008-02
INTERNATIONAL
STANDARD
Electromechanical elementary relays –
Part 1: General requirements
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.
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please contact the address below or your local IEC member National Committee for further information.

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IEC 61810-1
Edition 3.0 2008-02
INTERNATIONAL
STANDARD
Electromechanical elementary relays –
Part 1: General requirements
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
PRICE CODE
XB
ICS 29.120.70 ISBN 2-8318-9586-3

– 2 – 61810-1 © IEC:2008(E)
CONTENTS
FOREWORD.5

1 Scope.7
2 Normative references .7
3 Terms and definitions .8
3.1 Definitions related to general terms .9
3.2 Definitions of relay types .9
3.3 Definitions related to conditions and operations.10
3.4 Definitions of operating values .12
3.5 Definitions related to contacts .13
3.6 Definitions related to accessories .16
3.7 Definitions related to insulation .16
4 Influence quantities .18
5 Rated values .18
5.1 Rated coil voltage/rated coil voltage range .18
5.2 Operative range .19
5.3 Release.19
5.4 Reset .19
5.5 Electrical endurance.19
5.6 Frequency of operation.19
5.7 Contact loads .20
5.8 Ambient temperature .20
5.9 Categories of environmental protection .20
5.10 Duty factor .20
6 General provisions for testing .20
7 Documentation and marking .22
7.1 Data .22
7.2 Additional data .23
7.3 Marking .23
7.4 Symbols .23
8 Heating .24
8.1 Requirements.24
8.2 Test procedure .25
8.3 Terminals .26
8.3.1 General .26
8.3.2 Solder terminals .26
8.3.3 Flat quick-connect terminations .26
8.3.4 Screw and screwless type terminals .27
8.3.5 Alternative termination types .27
8.3.6 Sockets .27
9 Basic operating function .27
9.1 General test conditions.27
9.2 Operate (monostable relays) .27
9.3 Release (monostable relays) .28
9.4 Operate/reset (bistable relays) .28
10 Insulation resistance and dielectric strength .28

61810-1 © IEC:2008(E) – 3 –
10.1 Preconditioning .28
10.2 Insulation resistance .28
10.3 Dielectric strength .28
11 Electrical endurance.30
12 Mechanical endurance.32
13 Clearances, creepage distances and solid insulation .32
13.1 General provisions .32
13.2 Clearances and creepage distances .33
13.3 Solid insulation.37
13.4 Accessible surfaces.37
14 Terminations .37
14.1 Screw terminals and screwless terminals .38
14.2 Flat quick-connect terminations .38
14.3 Solder terminals .38
14.3.1 Resistance to soldering heat .38
14.3.2 Solder pins .38
14.3.3 Terminals for surface mounting (SMD).38
14.3.4 Other solder terminations (e.g. soldering lugs) .38
14.4 Sockets .38
14.5 Alternative termination types .39
15 Sealing.39
16 Heat and fire resistance.39

Annex A (normative) Explanations regarding relays .40
Annex B (informative) Inductive contact loads.43
Annex C (normative) Test set-up .45
Annex D (informative) Special loads .49
Annex E (normative) Heating test arrangement.52
Annex F (normative) Measurement of clearances and creepage distances.53
Annex G (normative) Relation between rated impulse voltage, nominal voltage and
overvoltage category .59
Annex H (normative) Pollution degrees .60
Annex I (normative) Proof tracking test .61
Annex J (informative) Schematic diagram of families of terminations .62
Annex K (normative) Glow-wire test .63
Annex L (normative) Ball pressure test .64
Annex M (informative) Needle flame test.65

Alphabetical list of terms.66
Bibliography.67

Figure A.1 – Diagram explaining terms related to monostable relays .40
Figure A.2 – Example explaining terms relating to contacts.41
Figure A.3 – Explanations regarding the operative range of the coil voltage.41
Figure A.4 – Explanation regarding the preconditioning and testing of the operate
voltage according to 5.2.1 (Class 1) and 9.2 .42

– 4 – 61810-1 © IEC:2008(E)
Figure A.5 – Explanation regarding the preconditioning and testing of the operate
voltage according to 5.2.2 and 9.2 .42
Figure C.1 – Standard test circuit.45
Figure C.2 – Functional block diagram .46
Figure C.3 – Contact load categories .48
Figure D.1 – Circuit for cable load.49
Figure D.2 – Test circuit for inrush current loads (e.g. capacitive loads and simulated
tungsten filament lamp loads) – AC circuits.50
Figure D.3 – Example for a tungsten filament lamp test for relays rated 10/100 A/250
V~/2,5 ms .50
Figure D.4 – Test circuit for inrush current loads (e.g. capacitive loads and simulated
lamp loads) – DC circuits .51
Figure
...

IEC 61810-1 ®
Edition 3.0 2008-02
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
Electromechanical elementary relays –
Part 1: General requirements
Relais électromécaniques élémentaires –
Partie 1: Exigences générales
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.
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please contact the address below or your local IEC member National Committee for further information.

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International Standards for all electrical, electronic and related technologies.

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latest edition, a corrigenda or an amendment might have been published.

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IEC 61810-1 ®
Edition 3.0 2008-02
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
Electromechanical elementary relays –

Part 1: General requirements
Relais électromécaniques élémentaires –

Partie 1: Exigences générales
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
PRICE CODE
INTERNATIONALE
CODE PRIX XB
ICS 29.120.70 ISBN 978-2-83220-896-0

– 2 – 61810-1  IEC:2008
CONTENTS
FOREWORD . 5

1 Scope . 7
2 Normative references . 7
3 Terms and definitions . 8
3.1 Definitions related to general terms . 9
3.2 Definitions of relay types . 9
3.3 Definitions related to conditions and operations. 10
3.4 Definitions of operating values . 12
3.5 Definitions related to contacts . 13
3.6 Definitions related to accessories . 16
3.7 Definitions related to insulation . 16
4 Influence quantities . 18
5 Rated values . 18
5.1 Rated coil voltage/rated coil voltage range . 18
5.2 Operative range . 19
5.3 Release . 19
5.4 Reset . 19
5.5 Electrical endurance . 19
5.6 Frequency of operation . 19
5.7 Contact loads . 20
5.8 Ambient temperature . 20
5.9 Categories of environmental protection . 20
5.10 Duty factor . 20
6 General provisions for testing . 20
7 Documentation and marking . 22
7.1 Data . 22
7.2 Additional data . 23
7.3 Marking . 23
7.4 Symbols . 23
8 Heating . 24
8.1 Requirements . 24
8.2 Test procedure . 25
8.3 Terminals . 26
8.3.1 General . 26
8.3.2 Solder terminals . 26
8.3.3 Flat quick-connect terminations . 26
8.3.4 Screw and screwless type terminals . 27
8.3.5 Alternative termination types . 27
8.3.6 Sockets . 27
9 Basic operating function . 27
9.1 General test conditions . 27
9.2 Operate (monostable relays) . 27
9.3 Release (monostable relays) . 28
9.4 Operate/reset (bistable relays) . 28
10 Insulation resistance and dielectric strength . 28

61810-1  IEC:2008 – 3 –
10.1 Preconditioning . 28
10.2 Insulation resistance . 28
10.3 Dielectric strength . 28
11 Electrical endurance . 30
12 Mechanical endurance . 32
13 Clearances, creepage distances and solid insulation . 32
13.1 General provisions . 32
13.2 Clearances and creepage distances . 33
13.3 Solid insulation . 37
13.4 Accessible surfaces . 37
14 Terminations . 37
14.1 Screw terminals and screwless terminals . 38
14.2 Flat quick-connect terminations . 38
14.3 Solder terminals . 38
14.3.1 Resistance to soldering heat . 38
14.3.2 Solder pins . 38
14.3.3 Terminals for surface mounting (SMD) . 38
14.3.4 Other solder terminations (e.g. soldering lugs) . 38
14.4 Sockets . 38
14.5 Alternative termination types . 39
15 Sealing . 39
16 Heat and fire resistance. 39

Annex A (normative) Explanations regarding relays . 40
Annex B (informative) Inductive contact loads . 43
Annex C (normative) Test set-up . 45
Annex D (informative) Special loads . 49
Annex E (normative) Heating test arrangement . 52
Annex F (normative) Measurement of clearances and creepage distances . 53
Annex G (normative) Relation between rated impulse voltage, nominal voltage and
overvoltage category . 59
Annex H (normative) Pollution degrees .
...