IEC 61811-54:2002

INTERNATIONAL IEC
STANDARD
61811-54
QC 160504
Second edition
2002-03
Electromechanical all-or-nothing relays –
Part 54:
Blank detail specification –
Electromechanical all-or-nothing telecom
relays of assessed quality –
Two change-over contacts,
15 mm ×××× 7,5 mm base
Relais électromécaniques de tout-ou-rien –
Partie 54:
Spécification particulière cadre –
Relais électromécaniques de tout-ou-rien télécom
soumis au régime d'assurance de la qualité –
Deux contacts à deux directions,
surface d'encombrement de 15 mm × 7,5 mm
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.
Consolidated editions
The IEC is now publishing consolidated versions of its publications. For example,
edition numbers 1.0, 1.1 and 1.2 refer, respectively, to the base publication, the
base publication incorporating amendment 1 and the base publication incorporating
amendments 1 and 2.
Further information on IEC publications
The technical content of IEC publications is kept under constant review by the IEC,
thus ensuring that the content reflects current technology. Information relating to
this publication, including its validity, is available in the IEC Catalogue of
publications (see below) in addition to new editions, amendments and corrigenda.
Information on the subjects under consideration and work in progress undertaken
by the technical committee which has prepared this publication, as well as the list
of publications issued, is also available from the following:
• IEC Web Site (www.iec.ch)
• Catalogue of IEC publications
The on-line catalogue on the IEC web site (www.iec.ch/catlg-e.htm) enables
you to search by a variety of criteria including text searches, technical
committees and date of publication. On-line information is also available on
recently issued publications, withdrawn and replaced publications, as well as
corrigenda.
• IEC Just Published
This summary of recently issued publications (www.iec.ch/JP.htm) is also
available by email. Please contact the Customer Service Centre (see below) for
further information.
• Customer Service Centre
If you have any questions regarding this publication or need further assistance,
please contact the Customer Service Centre:
Email: custserv@iec.ch
Tel: +41 22 919 02 11
Fax: +41 22 919 03 00
INTERNATIONAL IEC
STANDARD
61811-54
QC 160504
Second edition
2002-03
Electromechanical all-or-nothing relays –
Part 54:
Blank detail specification –
Electromechanical all-or-nothing telecom
relays of assessed quality –
Two change-over contacts,
15 mm ×××× 7,5 mm base
Relais électromécaniques de tout-ou-rien –
Partie 54:
Spécification particulière cadre –
Relais électromécaniques de tout-ou-rien télécom
soumis au régime d'assurance de la qualité –
Deux contacts à deux directions,
surface d'encombrement de 15 mm × 7,5 mm
 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: +41 22 919 02 11 Telefax: +41 22 919 03 00 E-mail: inmail@iec.ch  Web: www.iec.ch
PRICE CODE
Commission Electrotechnique Internationale
V
International Electrotechnical Commission
Международная Электротехническая Комиссия
For price, see current catalogue

– 2 – 61811-54  IEC:2002(E)
CONTENTS
FOREWORD.3
1 General .5
1.1 Scope.5
1.2 Normative references .5
1.3 Front page of the detail specification.7
2 Characteristic values of the relay .8
2.1 General data.8
2.2 Construction of IECQ type designation (ordering information).9
2.3 Coil data.9
2.4 Contact data.10
2.4.1 Electrical endurance and switching frequency.10
2.4.2 Static contact-circuit resistance.10
2.4.3 Mechanical endurance .10
2.4.4 Timing (without suppression device).10
2.5 Mounting .11
2.6 Environmental data.11
2.7 Package of relays for automatic handling (if applicable) .11
3 Qualification approval procedures .11
4 Quality conformance inspection .12
4.1 Formation of inspection lots .12
4.2 Intervals between tests .12
5 Marking and documentation .12
5.1 Marking of the relay .12
5.2 Marking of the package.12
5.3 Documentation .13
6 Annexes .13
7 Tests .13
7.1 Standard conditions for testing.13
7.2 Mounting of test specimens during the test .13
7.3 General conditions for testing .13
8 Ordering information .13
9 Relay reliability – Failure rate data (optional).13
Table 1 – Dielectric test voltages.9
Table 2 – Coil data.9
Table 3 – Loads, contact-circuit resistance limits, switching cycles and frequencies for
electrical endurance and overload tests.10
Table 4 – Quality conformance inspection .14-28
Table 5 – Qualification approval .29-31
Table 6 – Industrial qualification .31

61811-54 © IEC:2002(E) – 3 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
ELECTROMECHANICAL ALL-OR-NOTHING RELAYS –
Part 54: Blank detail specification –
Electromechanical all-or-nothing telecom relays of assessed quality –
Two change-over contacts, 15 mm ×××× 7,5 mm base
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 61811-54 has been prepared by of IEC technical committee 94:
All-or-nothing electrical relays.
This second edition of IEC 61811-54 cancels and replaces the first edition published in 1997
and constitutes a technical revision.
The text of this standard is based on the following documents:
FDIS Report on voting
94/148/FDIS 94/162/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.
The QC number that appears on the front cover of this publication is the specification number
in the IEC Quality Assessment System for Electronic Components (IECQ).
This publication has been drafted in accordance with the ISO/IEC Directives, Part 3.

– 4 – 61811-54  IEC:2002(E)
The committee has decided that the contents of this publication will remain unchanged until 2007.
At this date, the publication will be
• reconfirmed;
• withdrawn;
• replaced by a revised edition, or
• amended.
61811-54 © IEC:2002(E) – 5 –
ELECTROMECHANICAL ALL-OR-NOTHING RELAYS –
Part 54: Blank detail specification –
Electromechanical all-or-nothing telecom relays of assessed quality –
Two change-over contacts, 15 mm ×××× 7,5 mm base
1 General
1.1 Scope
This part of IEC 61811 is a blank detail specification applicable to electromechanical all-
or-nothing telecom relays of assessed quality. Relays according to this standard are provided
for operation in telecommunication applications. However, as electromechanical all-or-nothing
relays, they are also suitable for particular industrial and other applications.
This standard selects from IEC 61810-7 and other sources the appropriate methods of tests to
be used in detail specifications derived from this specification, and contains basic test
schedules to be used in the preparation of such specifications in accordance with IEC 61811-1.
1.2 Normative references
The following referenced documents are indispensable for the application 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 60068-1:1988, Environmental testing – Part 1: General and guidance
Amendment 1 (1992)
IEC 60068-2-17:1994, Environmental testing – Part 2: Tests – Test Q: Sealing
IEC 60068-2-20:1979, Environmental testing – Part 2: Tests – Test T: Soldering
Amendment 2 (1987)
IEC 60068-2-47:1999, Environmental testing – Part 2-47: Test methods – Mounting of
components, equipment and other articles for vibration, impact and similar dynamic tests
IEC 60255-14:1981, Electrical relays – Part 14: Endurance test for electrical relay contacts –
Preferred values for contact loads
IEC 60695-2-2:1991, Fire hazard testing – Part 2: Test methods – Section 2 – Needle-flame test
IEC 61709:1996, Electronic components – Reliability – Reference conditions for failure rates
and stress models for conversion
IEC 61810-7:1997, Electromechanical all-or-nothing relays – Part 7: Test and measurement
procedures
– 6 – 61811-54  IEC:2002(E)
IEC 61811-1:1999, Electromechanical non-specified time all-or-nothing relays of assessed
quality – Part 1: Generic specification
IEC 61811-50:2002, Electromechanical all-or-nothing relays – Part 50: Sectional specification –
Electromechanical all-or-nothing telecom relays of assessed quality
QC 001002-2:1998, Rules of Procedure of the IEC Quality Assessment System for Electronic
Components (IECQ) – Part 2: Documentation
QC 001002-3:1998, Rules of Procedure of the IEC Quality Assessment System for Electronic
Components (IECQ) – Part 3: Approval Procedures
QC 001005:2000, Register of Firms, Products and Services approved under the IECQ System,
including ISO 9000
CECC 00802:1990, Guidance document: CECC Standard Method for the Specification of
Surface Mounting Components (SMDs) of Assessed Quality
(National authorize
...