Reed switches - Part 1-1: Generic specification - Blank detail specification

IEC 62246-1-1:2018 is a blank detail specification which defines requirements and tests for reed switches for use in general and industrial applications.
This document is intended to be used in conjunction with IEC 62246-1:2015 and specific products standards applying as switching elements.
This document selects from IEC 62246-1:2015 and from other sources the appropriate test procedures to be used in detail specifications derived from this specification.
Reed switch types are specified depending on characteristic values including functional ratings for safety and tests.
This second edition cancels and replaces the first edition published in 2013. This edition constitutes a technical revision.
This edition includes the following significant technical changes with respect to the previous editions:
a) update of the scope, references and terms and definitions;
b) inclusion of guidelines for the preparation of blank detail and detail specifications;
c) update of characteristics values including functional ratings for safety;
d) update of the quality conformance inspection procedures;
e) update of typical applications.

Contacts à lames souples - Partie 1-1: Spécification générique - Spécification particulière-cadre

L'IEC 62246-1-1:2018 est une spécification particulière-cadre qui définit les exigences et les essais des contacts à lames souples utilisables dans les applications générales et industrielles.
Le présent document est destiné à être utilisé conjointement avec l’IEC 62246-1:2015 et des normes de produits spécifiques qui s’appliquent comme des éléments de commutation.
Le présent document sélectionne dans l’IEC 62246-1:2015 et dans d'autres sources les procédures d'essai appropriées à utiliser dans le cadre des spécifications particulières dérivées de la présente spécification.
Les types de contact à lames souples sont spécifiés en fonction des valeurs caractéristiques, y compris les valeurs assignées de fonctionnement pour la sécurité et les essais.
Cette deuxième édition annule et remplace la première édition parue en 2013. Cette édition constitue une révision technique.
Cette édition inclut les modifications techniques majeures suivantes par rapport aux éditions précédentes:
a) mise à jour du domaine d’application, des références et des termes et définitions;
b) inclusion de lignes directrices pour l’élaboration des spécifications particulières-cadres et des spécifications particulières;
c) mise à jour des valeurs caractéristiques dont les valeurs assignées de fonctionnement pour la sécurité;
d) mise à jour des procédures de contrôle de conformité de la qualité;
e) mise à jour d’applications types.

General Information

Status
Published
Publication Date
05-Feb-2018
Current Stage
PPUB - Publication issued
Start Date
06-Feb-2018
Completion Date
06-Feb-2018
Ref Project

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IEC 62246-1-1
Edition 2.0 2018-02
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
Reed switches –
Part 1-1: Generic specification – Blank detail specification
Contacts à lames souples –
Partie 1-1: Spécification générique – Spécification particulière-cadre
IEC 62246-1-1:2018-02(en-fr)
---------------------- Page: 1 ----------------------
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---------------------- Page: 2 ----------------------
IEC 62246-1-1
Edition 2.0 2018-02
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
Reed switches –
Part 1-1: Generic specification – Blank detail specification
Contacts à lames souples –
Partie 1-1: Spécification générique – Spécification particulière-cadre
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 29.120.70 ISBN 978-2-8322-5337-3

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 62246-1-1:2018 © IEC 2018
CONTENTS

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

INTRODUCTION ..................................................................................................................... 6

1 Scope .............................................................................................................................. 7

2 Normative references ...................................................................................................... 7

3 Terms and definitions ...................................................................................................... 8

3.1 reed switch types .................................................................................................... 8

3.2 tests ....................................................................................................................... 8

3.3 inspection ............................................................................................................... 9

3.4 safety and failure modes ......................................................................................... 9

4 Test schedules .............................................................................................................. 10

4.1 General ................................................................................................................. 10

4.2 Order of tests ........................................................................................................ 10

4.3 Test groups and subgroups ................................................................................... 10

4.4 Type test ............................................................................................................... 10

4.5 Quality conformance inspection ............................................................................ 10

4.6 Formation of inspection lots .................................................................................. 10

4.7 Periodic test .......................................................................................................... 11

4.8 Periodic test intervals between tests ..................................................................... 11

4.9 Standard conditions for testing .............................................................................. 11

4.10 Mounting of test specimens during the test ........................................................... 11

4.11 General conditions for testing ............................................................................... 11

5 Characteristic values of the reed switches ..................................................................... 37

5.1 Contact data ......................................................................................................... 37

5.1.1 Failure criteria ............................................................................................... 37

5.1.2 Static contact-circuit resistance ..................................................................... 41

5.1.3 Mechanical endurance ................................................................................... 42

5.1.4 Final dielectric test ........................................................................................ 42

5.2 Environmental data ............................................................................................... 42

5.3 Reliability – Failure rate data ................................................................................ 42

6 Marking and documentation ........................................................................................... 42

6.1 General ................................................................................................................. 42

6.2 Marking of the reed switch .................................................................................... 43

6.3 Marking of the packaging ...................................................................................... 43

6.4 Coded date of manufacturer .................................................................................. 43

7 Preparation of blank detail and detail specification ........................................................ 43

Annex A (normative) Mounting in a standard coil ................................................................. 45

Annex B (normative) Variants .............................................................................................. 46

Annex C (informative) Typical applications ........................................................................... 47

Annex D (informative) Examples of blank detail and detail specifications ............................. 48

D.1 Key to front page .................................................................................................. 48

D.2 Examples of blank detail specifications ................................................................. 49

D.2.1 Blank detail specification (1) .......................................................................... 49

D.2.2 Blank detail specification (2) .......................................................................... 50

D.2.3 Blank detail specification (3) .......................................................................... 51

D.2.4 Blank detail specification (4) .......................................................................... 52

---------------------- Page: 4 ----------------------
IEC 62246-1-1:2018 © IEC 2018 – 3 –

D.2.5 Blank detail specification (5) .......................................................................... 53

D.2.6 Blank detail specification (6) .......................................................................... 54

D.2.7 Blank detail specification (7) .......................................................................... 55

D.2.8 Blank detail specification (8) .......................................................................... 56

D.2.9 Blank detail specification (9) .......................................................................... 57

D.2.10 Blank detail specification (10) ........................................................................ 58

D.2.11 Blank detail specification (11) ........................................................................ 59

D.2.12 Blank detail specification (12) ........................................................................ 60

Bibliography .......................................................................................................................... 61

Figure A.1 – Switch direction and position in a standard coil ................................................. 45

Table 1 – Test procedure of quality assessment ................................................................... 12

Table 2 – Sampling and test schedule of type test (1 of 5) .................................................... 14

Table 3 – Sampling and test schedule of type test (grouping) ............................................... 27

Table 4 – Quality conformance inspection (1 of 7)................................................................. 29

Table 5 – Variant A of reed switches (1 of 2)......................................................................... 37

Table 6 – Variant A of heavy-duty reed switches (1 of 2)....................................................... 39

Table 7 – Variant B of heavy-duty reed switches ................................................................... 41

Table 8 – Environmental data for reed switches .................................................................... 42

Table 9 – Reliability data for reed switches ........................................................................... 42

---------------------- Page: 5 ----------------------
– 4 – IEC 62246-1-1:2018 © IEC 2018
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
REED SWITCHES –
Part 1-1: Generic specification – Blank detail specification
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

misinterpretation by any end user.

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.

International Standard IEC 62246-1-1 has been prepared by IEC technical committee 94: All-

or-nothing electrical relays.

This second edition cancels and replaces the first edition published in 2013. This edition

constitutes a technical revision.

This edition includes the following significant technical changes with respect to the previous

editions:
a) update of the scope, references and terms and definitions;

b) inclusion of guidelines for the preparation of blank detail and detail specifications;

c) update of characteristics values including functional ratings for safety;
d) update of the quality conformance inspection procedures;
e) update of typical applications.
---------------------- Page: 6 ----------------------
IEC 62246-1-1:2018 © IEC 2018 – 5 –
The text of this International Standard is based on the following documents:
FDIS Report on voting
94/426/FDIS 94/427/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.

This document is to be used in conjunction with IEC 62246-1:2015.

A list of all parts in the IEC 62246 series, published under the general title Reed switches, can

be found on the IEC website.

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.

IMPORTANT – The 'colour inside' logo on the cover page of this publication indicates

that it contains colours which are considered to be useful for the correct

understanding of its contents. Users should therefore print this document using a

colour printer.
---------------------- Page: 7 ----------------------
– 6 – IEC 62246-1-1:2018 © IEC 2018
INTRODUCTION

Reed switches which are in mass production and which are widely used, in practice could be

classified by the following characteristics:
a) Size:

• Normal or standard reed switches with a tube more than 50 mm in length and more

than 5 mm in diameter;

• Sub-miniature reed switches with a tube more than 20 mm and up to 50 mm in length

and up to 5 mm in diameter;

• Miniature reed switches with a tube more than 10 mm and up to 20 mm in length and

more than 2 mm and up to 5 mm in diameter;

• Micro-miniature reed switches with a tube up to 10 mm in length and up to 2 mm in

diameter.
b) Type of switching of electric circuit:
• Closing or normally open – A type or NO;
• Opening or normally closed – B type or NC;
• Changeover – C type or CO.
c) Withstand voltage level:
• Low-voltage (up to 1 000 V);
• High-voltage (more than 1 000 V).
d) Switches power:
• Low-power (up to 60 W or 60 VA);
• Power (100 W to 1 000 W or 100 VA to 1 000 VA);
• High-power (more than 1 000 W or 1 000 VA).
e) Types of electric contacts:
• The tube is filled with dry air, gas mixture, vacuumized, or high pressurized.

Based on the general provisions of IEC 62246-1:2015, this document selects and specifies

blank detail and detail specifications including safety contact ratings and test procedures for

reed switches where enhanced requirements for the verification of quality assessment

specification apply.

This document describes sampling and test schedules for qualification approval procedures,

quality conformance inspection, formation of inspection lots and intervals between tests.

NOTE All type of reed switches exclude mercury reed switches.
---------------------- Page: 8 ----------------------
IEC 62246-1-1:2018 © IEC 2018 – 7 –
REED SWITCHES –
Part 1-1: Generic specification – Blank detail specification
1 Scope

This part of IEC 62246 which is a blank detail specification defines requirements and tests for

reed switches for use in general and industrial applications.

This document is intended to be used in conjunction with IEC 62246-1:2015 and specific

products standards applying as switching elements.

This document selects from IEC 62246-1:2015 and from other sources the appropriate test

procedures to be used in detail specifications derived from this specification.

Reed switch types are specified depending on characteristic values including functional

ratings for safety and tests.

NOTE Mercury wetted reed switches are not covered by this document due to their possible environmental impact.

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 60068-2-6:2007, Environmental testing – Part 2-6: Tests – Test Fc: Vibration (sinusoidal)

IEC 60068-2-11:1981, Basic environmental testing procedures – Part 2-11: Tests – Test Ka:

Salt mist

IEC 60068-2-14:2009, Environmental testing – Part 2-14: Tests – Test N: Change of

temperature
IEC 60068-2-17:1994, Environmental testing – Part 2-17: Tests – Test Q: Sealing

IEC 60068-2-20:2008, Environmental testing – Part 2-20: Tests – Test T: Test methods for

solderability and resistance to soldering heat of devices with leads

IEC 60068-2-21:2006, Environmental testing – Part 2-21: Tests – Test U: Robustness of

terminations and integral mounting devices

IEC 60068-2-78:2012, Environmental testing – Part 2-78: Tests – Test Cab: Damp heat,

steady state
IEC 60127-2:2014, Miniature fuses – Part 2: Cartridge fuse-links

IEC 61373:2010, Railway applications – Rolling stock equipment – Shock and vibration tests

IEC 61810-2:2017, Electromechanical elementary relays – Part 2: Reliability
---------------------- Page: 9 ----------------------
– 8 – IEC 62246-1-1:2018 © IEC 2018

IEC 61810-2-1:2017, Electromechanical elementary relays – Part 2-1: Reliability – Procedure

for the verification of B values
IEC 62246-1:2015, Reed switches – Part 1: Generic specification

ISO 2859-1:1999, Sampling procedures for inspection by attributes – Part 1: Sampling

schemes indexed by acceptance quality limit (AQL) for lot-by-lot inspection
3 Terms and definitions
The terms and definitions given in IEC 62246-1:2015 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
3.1 reed switch types
3.1.1
type

products having similar design features and nominal dimensions manufactured by the same

techniques and falling within a range of ratings specified by the manufacturer

Note 1 to entry: Mounting accessories are ignored, provided they have no significant effect on the test results.

3.1.2
variant
variation within a type having specific characteristics
3.1.3
reed switch

assembly containing contact blades, partly or completely made of magnetic material,

hermetically sealed in an envelope and controlled by means of an externally generated

magnetic field (e.g. an energizing quantity applied to a coil)
3.1.4
high voltage vacuum reed switch

reed switch, in which ability to switch high voltages is achieved by a high vacuum within the

hermetically sealed envelope
3.1.5
heavy-duty reed switch
reed switch, in which greater switching capacity is achieved

Note 1 to entry: Blades having additional contact tips or a contact tip and spring which separate the magnetic

path and electric path are typical examples of techniques to increase switching capacity.

3.2 tests
3.2.1
type test

test of one or more reed switches made to a certain design to show that the design meets

certain specifications
3.2.2
routine test
conformity test made on each reed switch during or after manufacture
---------------------- Page: 10 ----------------------
IEC 62246-1-1:2018 © IEC 2018 – 9 –
3.2.3
lot-by-lot test

test carried out periodically on a sample of reed switches drawn from running production at

least once a month
3.2.4
periodic test

test carried out periodically on a sample of reed switches drawn from running production at

least once a year and every two years

Note 1 to entry: The results from periodic tests are used to verify that the level of technical performance is

maintained.

Note 2 to entry: Sub-groups intervals between tests A0, A4 and B1, C1 and C4 are specified in 4.8.

3.3 inspection
3.3.1
inspection

process of measuring, examining, testing, or otherwise comparing the unit of product with the

specified requirements
3.3.2
inspection level
specification of lower limits for lot-by-lot test
Note 1 to entry: See ISO 2859-1:1999, Clause 9.
3.3.3
AQL
acceptance quality limit

maximum percent of defects that can be tolerance as a risk, stated for purposes of sampling

inspection

Note 1 to entry: Sample inspection with associated risk tolerance is employed only where all units of product

within an inspection lot is expected to completely comply with specification requirements.

3.4 safety and failure modes
3.4.1
B value
, the time (in number of cycles) by which 10 % of the population will have
point estimate of B
failed

Note 1 to entry: When B values are specified in the detail specifications, the electrical endurance test should

measure all failures according to IEC 61810-2.
Note 2 to entry: See Clause A.3 of IEC 61810-2:2017.
3.4.2
B value
10D
number of cycles until 10 % of the components fail dangerously
Note 1 to entry: B values are calculated according to IEC 61810-2-1.
10D
3.4.3
dangerous failure

failure of an element and/or subsystem and/or system that plays a part in implementing the

safety function that decreases the probability that the safety function operates correctly when

required
---------------------- Page: 11 ----------------------
– 10 – IEC 62246-1-1:2018 © IEC 2018
[SOURCE: IEC 61508-4:2010, 3.6.7, modified – item a) has been deleted.]
4 Test schedules
4.1 General

Test procedures of quality assessment are specified in Table 1 which is referenced in the

corresponding subclauses of IEC 62246-1.
4.2 Order of tests

Quality conformance inspection is divided into two parts: that carried out lot-by-lot, on which

the release of the individual lots is based, and that carried out on a periodic basis, which

contains the time-consuming and more expensive tests.

When several tests are subsequently to be carried out on any one specimen or number of

specimens, the following order shall apply, unless otherwise specified in the detail

specification:
a) a 100 % test with
b) tests in groups.
4.3 Test groups and subgroups

For the 100 % test subgroup, a reed switch shall be rejected when it fails any test. For

detection purposes, a contact can be considered closed when the voltage drop across it is

less than one half of its open-circuit value. Conditions of test shall be specified in the detail

specification.
4.4 Type test
• Sampling and test schedule are specified in Tables 2 and 3.
• The tests specified and their order is mandatory.

• Tests stated in Tables 2 and 3 are mandatory for the variants except when otherwise

specified.
4.5 Quality conformance inspection

An initial conformity test has to be passed and then confirmed by routine tests, lot-by-lot tests

and periodic tests.
Quality conformance inspection contains the tests stated in Table 4:
• Group A: routine tests;
• Groups A and B: lot-by-lot tests;
• Group C: periodic tests.
Unless otherwise stated in this document, all tests of Table 4 are mandatory.
Where a subgroup contains
...

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