Electromechanical elementary relays - Part 10: Additional functional aspects and safety requirements for high-capacity relays

IEC 61810-10:2019, with functional and safety aspects, applies to electromechanical elementary relays (non-specified time all-or-nothing relays) with high capability requirements like breaking or short circuit capabilities and similar for incorporation into low-voltage equipment. These relays may have a specific design to extinguish the electric arc between contacts (e.g. by magnetic blow-out), or use an insulation coordination not covered by IEC 61810-1 (e.g. by gas filled contact chambers), or require safety assessments not covered by IEC 61810-1 (e.g. for higher loads).
It defines additional requirements for high-capacity relays with generic performance intended for use in applications in smart grids, electric vehicles and other applications where, for example, battery charge/discharge switching is used, such as:
• electrical energy storage (EES) systems,
• solar photovoltaic energy systems,
• electric road vehicles (EV) and electric industrial trucks,
• power electronic systems and equipment,
• secondary cells and batteries,
• road vehicles.
Compliance with the requirements of this standard is verified by the type tests indicated.

Relais électromécaniques élémentaires - Partie 10: Aspects fonctionnels et exigences de sécurité supplémentaires pour les relais à grande capacité

L'IEC 61810-10:2019, qui comporte des aspects fonctionnels et de sécurité, s'applique aux relais électromécaniques élémentaires (relais de tout ou rien à temps non spécifié) dont de grandes capacités sont exigées, telles qu'un pouvoir de coupure ou une capacité de court-circuit et des capacités analogues, destinés à être incorporés dans des matériels basse tension. Ces relais peuvent être conçus de manière spécifique afin d'éteindre les arcs électriques entre des contacts (par exemple, par soufflage magnétique) ou d'utiliser une coordination de l'isolement non couverte par l'IEC 61810-1 (par exemple, chambres de contact remplies de gaz), ou exiger des évaluations de sécurité non couvertes par l'IEC 61810-1 (par exemple, pour des charges supérieures).
Elle définit des exigences supplémentaires pour les relais à grande capacité à performances génériques destinés à être utilisés dans des applications dans les réseaux intelligents, dans les véhicules électriques et dans d'autres applications dans lesquelles, par exemple, la commutation charge/décharge de batterie est utilisée, telles que:
• systèmes de stockage d'énergie électrique (EES – electrical energy storage),
• systèmes d'énergie solaire photovoltaïque,
• véhicules électriques routiers (EV – electric vehicle) et chariots électriques de manutention,
• systèmes et matériels d'électronique de puissance,
• accumulateurs et batteries,
• véhicules routiers.
La conformité aux exigences de la présente norme est vérifiée par les essais de type indiqués.

General Information

Status
Published
Publication Date
10-Jul-2019
Current Stage
PPUB - Publication issued
Completion Date
11-Jul-2019
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IEC 61810-10
Edition 1.0 2019-07
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Electromechanical elementary relays –
Part 10: Additional functional aspects and safety requirements for high-capacity
relays
Relais électromécaniques élémentaires –
Partie 10: Aspects fonctionnels et exigences de sécurité supplémentaires pour
les relais à grande capacité
IEC 61810-10:2019-07(en-fr)
---------------------- Page: 1 ----------------------
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---------------------- Page: 2 ----------------------
IEC 61810-10
Edition 1.0 2019-07
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Electromechanical elementary relays –
Part 10: Additional functional aspects and safety requirements for high-capacity
relays
Relais électromécaniques élémentaires –
Partie 10: Aspects fonctionnels et exigences de sécurité supplémentaires pour
les relais à grande capacité
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 29.120.70 ISBN 978-2-8322-7148-3

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 61810-10:2019 © IEC 2019
CONTENTS

FOREWORD ........................................................................................................................... 4

1 Scope .............................................................................................................................. 6

2 Normative references ...................................................................................................... 6

3 Terms and definitions ...................................................................................................... 7

4 Influence quantities ......................................................................................................... 8

5 Rated values ................................................................................................................... 8

6 General provisions for testing .......................................................................................... 8

7 Documentation and marking ............................................................................................ 9

8 Heating ............................................................................................................................ 9

9 Basic operating function ................................................................................................ 11

10 Dielectric strength ......................................................................................................... 12

11 Electrical endurance ...................................................................................................... 14

12 Mechanical endurance ................................................................................................... 14

13 Clearances, creepage distances and solid insulation ..................................................... 14

14 Terminations ................................................................................................................. 18

15 Sealing .......................................................................................................................... 18

16 Heat and fire resistance ................................................................................................. 19

17 Special tests .................................................................................................................. 19

Annex A (normative) Explanations regarding relays ............................................................. 20

Annex B (informative) Inductive contact loads ...................................................................... 21

Annex C (normative) Test set-up ......................................................................................... 24

Annex D (informative) Special loads .................................................................................... 25

Annex E (normative) Heating test arrangement .................................................................... 26

Annex F (normative) Measurement of clearances and creepage distances ........................... 27

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

overvoltage category ..................................................................................................... 28

Annex H (normative) Pollution degrees ................................................................................ 30

Annex I (normative) Proof tracking test ................................................................................ 31

Annex J (informative) Schematic diagram of families of terminations ................................... 32

Annex K (normative) Glow-wire test ..................................................................................... 33

Annex L (normative) Ball pressure test ................................................................................ 34

Annex M (informative) Needle flame test .............................................................................. 35

Annex N (informative) Resistance for standard soldering processes .................................... 36

Annex O (informative) Risk assessment ............................................................................... 37

Annex P (informative) Mechanical properties of terminals .................................................... 38

Annex Q (normative) Long-term stability of the sealing (leak rate evaluation) ...................... 44

Annex R (informative) Short-circuit capacity ........................................................................ 46

Annex S (informative) Special tests for applications – Photovoltaic systems ........................ 49

Annex T (informative) Special tests for applications – Road vehicles ................................... 53

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

Figure 1 – Test procedure of system evaluation .................................................................... 18

---------------------- Page: 4 ----------------------
IEC 61810-10:2019 © IEC 2019 – 3 –

Figure P.1 – Test equipment for flexion test .......................................................................... 42

Figure Q.1 – Temperature cycle ............................................................................................ 44

Figure R.1 – Short-circuit capacity test circuit ....................................................................... 47

Figure T.1 – Short voltage drop for system with nominal voltages ......................................... 55

Figure T.2 – Supply voltage profile for the reset test ............................................................. 56

Figure T.3 – PSD of acceleration versus frequency ............................................................... 59

Figure T.4 – PSD of acceleration versus frequency ............................................................... 60

Table 1 – Type testing ............................................................................................................ 9

Table 2 – Required relay data ................................................................................................. 9

Table 3 – Test conductor for test current above 400 A and up to 800 A inclusive

dependent on the current carried by the terminal .................................................................. 11

Table 4 – Test copper bars for test current above 400 A and up to 1 000 A inclusive

dependent on the current carried by the terminal .................................................................. 11

Table 5 – Dielectric strength – AC......................................................................................... 12

Table 6 – Dielectric strength – DC ........................................................................................ 13

Table 7 – Minimum clearances in air for insulation coordination ............................................ 15

Table B.1 – Verification of the making and breaking capacity (abnormal conditions) ............ 21

Table B.2 – Verification of the making and breaking capacity (normal conditions) ................ 22

Table B.3 – Electrical endurance test .................................................................................... 23

Table G.1 – Correspondence between the nominal voltage of the supply system and

the equipment rated impulse withstand voltage, in case of overvoltage protection by

surge-arresters according to IEC 61810-1 ............................................................................. 28

Table P.1 – Tightening torques for the verification of the mechanical strength of screw-

type terminals ....................................................................................................................... 39

Table P.2 – Test values for flexion and pull-out tests for round copper conductors ................ 41

Table P.3 – Test values for pull-out test for flat copper conductors ....................................... 43

Table S.1 – Special tests for photovoltaic system ................................................................. 50

Table S.2 – Number of operating cycles ................................................................................ 51

Table S.3 – Special tests ...................................................................................................... 52

Table T.1 – Special test for road vehicles ............................................................................. 53

Table T.2 – Supply voltage for U = 12 V system devices .................................................... 57

Table T.3 – Supply voltage for U = 24 V system devices .................................................... 57

Table T.4 – Values for PSD and frequency ........................................................................... 59

Table T.5 – Values for PSD and frequency ........................................................................... 60

Table T.6 – Values for PSD and frequency, additional test in case of natural

frequencies, f , of DUT below 30 Hz ..................................................................................... 61

---------------------- Page: 5 ----------------------
– 4 – IEC 61810-10:2019 © IEC 2019
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
ELECTROMECHANICAL ELEMENTARY RELAYS –
Part 10: Additional functional aspects and safety
requirements for high-capacity relays
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

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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 itself does not provide any attestation of conformity. Independent certification bodies provide conformity

assessment services and, in some areas, access to IEC marks of conformity. IEC is not responsible for any

services carried out by independent certification bodies.

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.

The International Standards of the IEC 61810 have been prepared by IEC technical committee

94: All-or-nothing electrical relays.
The text of this International Standard is based on the following documents:
FDIS Report on voting
94/453/FDIS 94/458/RVD

Full information on the voting for the approval of this International Standard can be found in

the report on voting indicated in the above table.

This document has been drafted in accordance with the ISO/IEC Directives, Part 2.

---------------------- Page: 6 ----------------------
IEC 61810-10:2019 © IEC 2019 – 5 –

A list of all parts of IEC 61810 series, published under the general title Electromechanical

elementary relays, can be found on the IEC website.
This International Standard is to be used in conjunction with IEC 61810-1:2015.

The committee has decided that the contents of this document will remain unchanged until the

stability date indicated on the IEC website under "http://webstore.iec.ch" in the data related to

the specific document. At this date, the document will be
• reconfirmed,
• withdrawn,
• replaced by a revised edition, or
• amended.
---------------------- Page: 7 ----------------------
– 6 – IEC 61810-10:2019 © IEC 2019
ELECTROMECHANICAL ELEMENTARY RELAYS –
Part 10: Additional functional aspects and safety
requirements for high-capacity relays
1 Scope

This part of IEC 61810, with functional and safety aspects, applies to electromechanical

elementary relays (non-specified time all-or-nothing relays) with high capability requirements

like breaking or short circuit capabilities and similar for incorporation into low-voltage

equipment. These relays may have a specific design to extinguish the electric arc between

contacts (e.g. by magnetic blow-out), or use an insulation coordination not covered by

IEC 61810-1 (e.g. by gas filled contact chambers), or require safety assessments not covered

by IEC 61810-1 (e.g. for higher loads).

It defines additional requirements for high-capacity relays with generic performance intended

for use in applications in smart grids, electric vehicles and other applications where, for

example, battery charge/discharge switching is used, such as:
• electrical energy storage (EES) systems,
• solar photovoltaic energy systems,
• electric road vehicles (EV) and electric industrial trucks,
• power electronic systems and equipment,
• secondary cells and batteries,
• road vehicles.

Compliance with the requirements of this standard is verified by the type tests indicated.

2 Normative references

The following documents are referred to in the text in such a way that some or all of their

content constitutes requirements of this document. For dated references, only the edition

cited applies. For undated references, the latest edition of the referenced document (including

any amendments) applies.
IEC 60028, International standard of resistance for copper

IEC 60060-1:2010, High-voltage test techniques – Part 1: General definitions and test

requirements

IEC 60068-2-14, Environmental testing – Part 2-14: Tests – Test N: Change of temperature

IEC 60068-2-17, Basic environmental testing procedures – Part 2-17: Tests – Test Q: Sealing

IEC 60068-2-27, Environmental testing – Part 2-27: Tests – Test Ea and guidance: Shock

IEC 60068-2-64:2008, Environmental testing – Part 2-64: Tests – Test Fh: Vibration,

broadband random and guidance
IEC 60270, High-voltage test techniques – Partial discharge measurements
---------------------- Page: 8 ----------------------
IEC 61810-10:2019 © IEC 2019 – 7 –

IEC 60664-1:2007, Insulation coordination for equipment within low-voltage systems – Part 1:

Principles, requirements and tests

IEC 60664-3:2016, Insulation coordination for equipment within low-voltage systems – Part 3:

Use of coating, potting or moulding for protection against pollution
IEC 60947-1:2007, Low-voltage switchgear and controlgear – Part 1: General rules

IEC 60999-1, Connecting devices – Electrical copper conductors – Safety requirements for

screw-type and screwless-type clamping units – Part 1: General requirements and particular

2 2

requirements for clamping units for conductors from 0,2 mm up to 35 mm (included)

IEC 60999-2, Connecting devices – Electrical copper conductors – Safety requirements for

screw-type and screwless-type clamping units – Part 2: Particular requirements for clamping

2 2
units for conductors above 35 mm up to 300 mm (included)

IEC 61810-1:2015, Electromechanical elementary relays – Part 1: General and safety

requirements

ISO 16750-1:2018, Road vehicles – Environmental conditions and testing for electrical and

electronic equipment – Part 1: General

ISO 16750-2:2012, Road vehicles – Environmental conditions and testing for electrical and

electronic equipment – Part 2: Electrical loads
3 Terms and definitions

For the purposes of this document, the terms and definitions given in IEC 61810-1 and the

following apply.

ISO and IEC maintain terminological databases for use in standardization at the following

addresses:
• IEC Electropedia: available at http://www.electropedia.org/
• ISO Online browsing platform: available at http://www.iso.org/obp

NOTE In the text of this document, the term "relay" is used instead of "elementary relay" to improve the

readability.
3.5 Terms and definitions related to contacts
Addition to IEC 61810-1:2015:
3.5.23
polarity of contact

indication of which terminal of a contact is to be connected to the positive supply and which to

the negative
3.5.24
arcing time

interval of time between the instant of the initiation of the arc in a pole or

a fuse and the instant of final arc extinction in that pole or that fuse
[SOURCE: IEC 60050-441:1984, 441-17-37]
---------------------- Page: 9 ----------------------
– 8 – IEC 61810-10:2019 © IEC 2019
4 Influence quantities
Clause 4 of IEC 61810-1 is applicable.
5 Rated values
Clause 5 of IEC 61810-1 is applicable, except as follows.
5.6 Electrical endurance

Recommended number of cycles: 1; 2; 5; 10; 20; 50; 100; 200; 500; 1 000; 2 000; 3 000;

5 000; 6 000; 10 000; 20 000; 25 000; 30 000; 50 000;100 000; 200 000; 300 000; 500 000;

etc.
5.7 Frequency of operation
Recommended frequencies: 180/h; 360/h; 720/h; 900/h and multiples thereof.
0,05 Hz; 0,1 Hz; 0,2 Hz; 0,25 Hz and multiples thereof.
5.8 Contact loads
a) Resistive loads, recommended values

Current: 0,1 A; 0,5 A; 1 A; 2 A; 3 A; 5 A; 6 A; 8 A; 10 A; 12 A; 16 A; 20 A; 25 A; 30 A;

35 A; 60 A; 100 A, 120 A; 150 A; 200 A; 300 A; 400 A; 600 A; 800 A; 1 000 A (AC/DC).

Voltage: 4,5 V; 5 V; 12 V; 24 V; 36 V; 42 V; 48 V; 110 V; 125 V; 230 V; 250 V; 300 V;

380 V; 400 V; 480 V; 500 V; 575 V; 600 V; 690 V; 1 000 V (AC/DC); 1 200 V DC; 1 500 V

DC.
b) Recommended inductive loads: see Annex B.
c) Recommended capacitive loads: see Annex D of IEC 61810-1:2015.
6 General provisions for testing
Clause 6 of IEC 61810-1 is applicable, except as follows.

Deviating from IEC 61810-1, the specimens shall be grouped in 8 inspection lots, and the

related tests shall be taken from Table 1 of this document.
Table 1 of this document replaces Table 3 of IEC 61810-1:2015.
---------------------- Page: 10 ----------------------
IEC 61810-10:2019 © IEC 2019 – 9 –
Table 1 – Type testing
Inspection Tests Clause Additional references
lot
1 Marking and documentation 7 IEC 60417
Heating (all coil voltages) 8 IEC 60085
Basic operating function (all coil voltages) 9
2 Dielectric strength 10
3 Electrical endurance (per contact load and contact material) 11
4 Mechanical endurance 12
5 Clearances, creepage distances and distances through solid 13 IEC 60664-1
insulation

6 Insulation coordination evaluation as a system (if applicable) 13.6 IEC 60060-1

Screw type terminals and screwless terminals (if applicable) 14.2 IEC 60999-1
Flat quick-connect terminations (if applicable) 14.3 IEC 61210
Solder terminals (if applicable) 14.4 IEC 60068-2-20
Sockets (if applicable) 14.5 IEC 61984
Alternative termination types (if applicable) 14.6
Sealing (if applicable) 15 IEC 60068-2-17
7 Heat and fire resistance 16 IEC 60695-2-10
8 Leaking test (sealed relay only) Annex Q IEC 60068-2-14
IEC 60068-2-17

NOTE The number of coil voltages in inspection lot 1 to be tested can be reduced under certain conditions

explained in Clauses 8 and 9.

Beside the defined minimum requirements, deviations of test conditions and procedures could be specified by the

manufacturer in the inspection lot 8.
7 Documentation and marking

Clause 7 of IEC 61810-1:2015 is applicable with the additions given in Table 2 of this

document.
Table 2 – Required relay data
N° Data Notes Place of indication
2d Coil polarity N/A in case of non-polarized coil Relay and/or catalogue or
instruction sheet
3h Classification of load and polarity Relay and/or catalogue or
For DC only use:+, -
of contacts instruction sheet
For AC/DC use: +/∼, -/∼, ∼

5l Limited short circuit capacity Specify the fuses or current Catalogue or instruction sheet

limiting device (if applicable)
8 Heating
Clause 8 of IEC 61810-1:2015 is applicable with the following changes/additions.
---------------------- Page: 11 ----------------------
– 10 – IEC 61810-10:2019 © IEC 2019
8.4.4 Screw and screwless type terminals

The electrical interconnections between the relays are made with bare rigid conductors

(= default, however the usage of flexible conductors is allowed if defined from the

manufacturer; this shall be stated in the documentation and in the test report) in accordance

with Table 10 of IEC 61810-1:2015 with a maximum of 400 A, and in accordance with Table 3

with a maximum of 800 A. The connections of the relay to the voltage or current source(s) are

realized with flexible conductors in accordance with Table 10 of IEC 61810-1:2015 with a

maximum of 400 A, and in accordance with Table 3 with a maximum of 800 A. The electrical

interconnections between the relays are made with copper bars in accordance with Table 4

with a maximum of 1 000 A. Any fixture to hold the flexible-connected test samples in place is

not allowed to have any impact on the results.

The temperature rise at the terminals shall not exceed 45 K. This may be verified without the

temperature rise influence of the relay contacts and the coil (e.g. bridged or short-circuited or

soldered relay contacts).
8.4.5 Alternative termination types

The electrical interconnections between the relays are made with bare rigid conductors in

accordance with Table 10 of IEC 61810-1:2015 with a maximum of 400 A, and in accordance

with Table 3 with a maximum of 800 A. The connections of the relay to the voltage or current

source(s) are realized wit
...

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