IEC 62246-1:2002

Reed contact units - Part 1: Generic specification

Is a generic specification applying to dry and mercury wetted reed contact units of assessed quality. Lists the tests and measurement procedures which may be selected for use in detail specifications for such units. Specifies the quality assessment procedures to be followed.

General Information

• Status: Published
• Publication Date: 29-Apr-2002
• ICS: 29.120.70 - Relays
• Technical Committee: TC 94 - Electrical relays
• Drafting Committee: MT 2 - TC 2/MT 2
• Current Stage: DELPUB - Deleted Publication
• Completion Date: 10-Feb-2011

Relations

• Revised: IEC 62246-1:2011 - Reed switches - Part 1: Generic specification
• Effective Date: 05-Sep-2023

Standards Content (Sample)

INTERNATIONAL IEC
STANDARD
62246-1
First edition
2002-04
Reed contact units –
Part 1:
Generic specification
Contacts à lames souples en enceinte scellée –
Partie 1:
Spécification générique
Reference number
Publication numbering
As from 1 January 1997 all IEC publications are issued with a designation in the
60000 series. For example, IEC 34-1 is now referred to as IEC 60034-1.
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edition numbers 1.0, 1.1 and 1.2 refer, respectively, to the base publication, the
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INTERNATIONAL IEC
STANDARD
62246-1
First edition
2002-04
Reed contact units –
Part 1:
Generic specification
Contacts à lames souples en enceinte scellée –
Partie 1:
Spécification générique
 IEC 2002  Copyright - all rights reserved
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 the publisher.
International Electrotechnical Commission, 3, rue de Varembé, PO Box 131, CH-1211 Geneva 20, Switzerland
Telephone: [phone] Telefax: [phone] E-mail: [e-mail]  Web: www.iec.ch
PRICE CODE
Commission Electrotechnique Internationale
XA
International Electrotechnical Commission
Международная Электротехническая Комиссия
For price, see current catalogue

– 2 – 62246-1  IEC:2002(E)
CONTENTS
FOREWORD.4
1 General .5
1.1 Scope.5
1.2 Normative references .5
1.3 Units, symbols and terminology .7
1.4 Preferred values.14
1.5 Marking .16
1.6 Order of precedence.16
1.7 Precautions regarding mercury (for mercury wetted contact units).16
2 Quality assessment procedures.17
2.1 General .17
2.2 Qualification approval procedures .18
2.3 Quality conformance inspection requirements.18
3 Test and measurement procedures.19
3.1 General .19
3.2 Alternative procedures .19
3.3 Standard conditions for testing .19
3.4 Visual inspection and check of dimensions .20
3.5 Functional tests.20
3.6 Remanence test (see figure 3).22
3.7 Contact circuit resistance .23
3.8 Dielectric test .24
3.9 Insulation resistance .26
3.10 Operate, release, transfer or bridging, and bounce times (see figure 2).26
3.11 Contact sticking.28
3.12 Robustness of terminals .31
3.13 Soldering (solderability and resistance to soldering heat) .31
3.14 Climatic sequence .32
3.15 Damp heat, steady state.33
3.16 Rapid change of temperature .33
3.17 Salt mist.34
3.18 Bump .34
3.19 Vibration.35
3.20 Shock.36
3.21 Acceleration test – Functional test only (applicable to dry reed contact units only) 37
3.22 Sealing.38
3.23 Electrical endurance.38
3.24 Mechanical endurance.45
3.25 Maximum cycling frequency.47
3.26 Mounting position test (for mercury wetted contact units) .48
3.27 Drain time test (for mercury wetted contact units).48
3.28 Voltage surge test .48
Annex A (normative) Standard test coils for reed contact units.50
Annex B (normative) Test systems.52

62246-1  IEC:2002(E) – 3 –
Figure 1 – Functional characteristics.9
Figure 2 – Time definitions.11
Figure 3 – Remanence test sequence .23
Figure 4 – Sequence of contact circuit resistance measurement .24
Figure 5 – Test circuit for the measurement of release and bounce time of a make
contact unit.27
Figure 6 – Test circuit for the measurement of time parameters of a change-over
contact unit.28
Figure 7 – Electrical endurance test arrangement .39
Figure A.1 – Configuration of test coils .50
Figure B.1 – Test system 1 .52
Figure B.2 – Test system 2 .52
Table 1 – Resistive loads.42
Table 2 – Loads .43
Table 3 – Cables.43
Table A.1 – List of standard test coils .50

– 4 – 62246-1  IEC:2002(E)
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
REED CONTACT UNITS –
Part 1: Generic specification
FOREWORD
1) The IEC (International Electrotechnical Commission) is a worldwide organization for standardization comprising
all national electrotechnical committees (IEC National Committees). The object of the 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, the IEC publishes International Standards. 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. The 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 the 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 National Committees.
3) The documents produced have the form of recommendations for international use and are published in the form
of standards, technical specifications, technical reports or guides and they are accepted by the National
Committees in that sense.
4) In order to promote international unification, IEC National Committees undertake to apply IEC International
Standards transparently to the maximum extent possible in their national and regional standards. Any
divergence between the IEC Standard and the corresponding national or regional standard shall be clearly
indicated in the latter.
5) The IEC provides no marking procedure to indicate its approval and cannot be rendered responsible for any
equipment declared to be in conformity with one of its standards.
6) Attention is drawn to the possibility that some of the elements of this International Standard may be the subject
of patent rights. The IEC shall not be held responsible for identifying any or all such patent rights.
International Standard IEC 62246-1 has been prepared by IEC technical committee 94: All-or-
nothing electrical relays.
The text of this standard is based on the following documents:
FDIS Report on voting
94/156/FDIS 94/164/RVD
Full information on the voting for the approval of this standard can be found in the report on
voting indicated in the above table.
This standard cancels and replaces IEC 60255-9 (1979).
The detail specifications (DS), the sectional specifications (SS) and the blank detail
specifications (BDS) are not yet available and will be developed as the need arises.
This publication has been drafted in accordance with the ISO/IEC Directives, Part 2.
The committee has decided that the contents of this publication will remain unchanged until
2005. At this date, the publication will be
• reconfirmed;
• withdrawn;
• replaced by a revised edition, or
• amended.
62246-1  IEC:2002(E) – 5 –
REED CONTACT UNITS –
Part 1: Generic specification
1 General
1.1 Scope
This part of IEC 62246 which is the generic specification applies to dry and mercury wetted
reed contact units of assessed quality. It lists the tests and measurement procedures which
may be selected for use in detail specifications for such units. This standard also specifies the
quality assessment procedures to be followed.
This standard applies to those reed contact units which are operated by an applied magnetic
field; it is not restricted to any particular type of contact load.
NOTE 1 Since tests using a standard coil and standard resistive loads are the easiest to specify and to define,
this standard is currently restricted to tests of this type.
NOTE 2 For elementary relays with reed contact units, this standard is recommended to be used together with the
standards IEC 61810-1 and IEC 61811-1 as applicable.
Where in this part of IEC 62246 the term “detail specification” is used, this either has the
meaning defined in A.7 of QC 001001 for application within the IECQ system, or it means any
appropriate document, for example manufacturer’s data sheet, test specification, customer
detail specification.
1.2 Normative references
The following referenced documents are indispensable for the application of this document.
For dated references, only the
...