IEC 60512-9-3:2011

IEC 60512-9-3 ®
Edition 2.0 2011-06
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Connectors for electronic equipment – Tests and measurements –
Part 9-3: Endurance tests – Test 9c: Mechanical operation (engaging and
separating) with electrical load

Connecteurs pour équipements électroniques – Essais et mesures –
Partie 9-3: Essais d’endurance – Essai 9c: Fonctionnement mécanique
(d’accouplement et de désaccouplement) avec charge électrique

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IEC 60512-9-3 ®
Edition 2.0 2011-06
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Connectors for electronic equipment – Tests and measurements –
Part 9-3: Endurance tests – Test 9c: Mechanical operation (engaging and
separating) with electrical load

Connecteurs pour équipements électroniques – Essais et mesures –
Partie 9-3: Essais d’endurance – Essai 9c: Fonctionnement mécanique
(d’accouplement et de désaccouplement) avec charge électrique
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
PRICE CODE
INTERNATIONALE
CODE PRIX J
ICS 31.220.01 ISBN 978-2-88912-550-0

– 2 – 60512-9-3  IEC:2011
CONTENTS
FOREWORD . 3
1 Scope and object . 5
2 Normative references . 5
3 Preparation . 6
3.1 Preparation of specimen . 6
3.2 Mounting . 6
4 Test method . 6
4.1 General . 6
4.2 Electrical load . 6
4.3 Mechanical operation . 6
4.4 Environmental test conditions . 7
4.5 Measurements . 7
4.5.1 Initial measurements . 7
4.5.2 Measurements during the test. 7
4.5.3 Final measurements . 7
5 Details to be specified . 7
Annex A (informative) Typical circuit diagram . 9

Figure A.1 – Example of circuit(s) – (diagrammatic) . 9
Figure A.2 – Example of circuit(s) – (circuit diagram) . 9

60512-9-3 © IEC:2011 – 3 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
CONNECTORS FOR ELECTRONIC EQUIPMENT –
TESTS AND MEASUREMENTS –
Part 9-3: Endurance tests –
Test 9c: Mechanical operation (engaging and separating)
with electrical load
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 60512-9-3 has been prepared by subcommittee 48B: Connectors,
of IEC technical committee 48: Electromechanical components and mechanical structures for
electronic equipment.
This second edition cancels and replaces the first edition, published in 2006, and constitutes
a technical revision.
The main technical changes with regard to the previous edition are as follows:
– An additional requirement to 4.1 stating that if more than one electrical circuit is wired for
testing, the wiring shall be carried out in a parallel electrical circuit.
– Subclauses 4.3 through 4.7 were removed and replaced by 4.2 through 4.4.

– 4 – 60512-9-3  IEC:2011
This standard is to be read in conjunction with IEC 60512-1 and IEC 60512-1-100, which
explains the structure of the IEC 60512 series.
The text of this standard is based on the following documents:
FDIS Report on voting
48B/2238/FDIS 48B/2244/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 publication has been drafted in accordance with the ISO/IEC Directives, Part 2.
A list of all parts in the IEC 60512 series, under the general title Connectors for electronic
equipment – Tests and measurements, can be found on the IEC website.
The committee has decided that the contents of this publication will remain unchanged until
the stability date indicated on the IEC web site under "http://webstore.iec.ch" in the data
related to the specific publication. At this date, the publication will be
• reconfirmed,
• withdrawn,
• replaced by a revised edition, or
• amended.
60512-9-3  IEC:2011 – 5 –
CONNECTORS FOR ELECTRONIC EQUIPMENT –
TESTS AND MEASUREMENTS –
Part 9-3: Endurance tests –
Test 9c: Mechanical operation (engaging and separating)
with electrical load
1 Scope and object
This part of IEC 60512, when required by the detail specification, is used for testing
connectors within the scope of IEC technical committee 48. This test may also be used for
similar devices when specified in a detail specification.
The object of this standard is to define a standard test method to assess the mechanical and
electrical operational endurance, i.e. engaging and separating cycles, of a connector in an
operating mode which includes a specified electrical load.
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, Environmental testing – Part 1: General and guidance
IEC 60068-2-13, Environmental testing – Part 2-13: Tests – Test M: Low air pressure
IEC 60512-1, Connectors for electronic equipment – Tests and measurements – Part 1:
General
IEC 60512-1-1, Connectors for electronic equipment – Tests and measurements – Part 1-1:
General examination – Test 1a: Visual examination
IEC 60512-1-100, Connectors for electronic equipment – Tests and measurements – Part 1-
100: General – Applicable publications
IEC 60512-2-1, Connectors for electronic equipment – Tests and measurements – Part 2-1:
Electrical continuity and contact resistance tests – Test 2a: Contact resistance – Millivolt level
method
IEC 60512-2-2, Connectors for electronic equipment – Tests and measurements – Part 2-2:
Electrical continuity and contact resistance tests – Test 2b: Contact resistance – Specified
current method
IEC 60512-3-1, Connectors for electronic equipment – Tests and measurements – Part 3-1:
Insulation tests – Test 3a: Insulation resistance
IEC 60512-4-1, Connectors for electronic equipment – Tests and measurements – Part 4-1:
Voltage stress tests – Test 4a: Voltage proof

– 6 – 60512-9-3  IEC:2011
3 Preparation
3.1 Preparation of specimen
The specimen shall consist of a component with its terminations and cables according to
Clause 5, a), unless otherwise specified in the detail specification. Any preconditioning given
in the detail specification shall be applied.
3.2 Mounting
The specimen under test shall be mounted per the manufacturer’s instructions or as described
in the detail specification.
4 Test method
4.1 General
The specimen shall be subjected to any electrical load and mechanical operational endurance
test in accordance with the requirements of the detail specification or other applicable
specification.
The specimen shall be operated (engaged/separated) to make and break the current load as
specified in the detail specification or other applicable specification.
In the case of specimen(s) having more than one circuit, the circuits shall be wired in parallel,
with appropriate duplication of other circuit components.
A circuit diagram, typical of that which may be specified, is shown in Annex A.
4.2 Electrical load
The type of electrical load, current, d.c. or a.c. voltage and frequency shall be stated in the
detail specification or other applicable specification.
An ‘equivalent circuit’ is intended to simulate a typical wiring installation including electrical
load and cable.
The equivalent circuit is specified by a resistance R, a capacitance C and an inductance L.
A typical circuit diagram is shown in Annex A.
In the case of specimen(s) having more than one circuit, the circuits shall be wired in parallel,
with appropriate duplication of other circuit components.
+5
During the mating cycles, the current and open-circuit voltage tolerances shall be within %
of the rated values specified in the detail specification.
4.3 Mechanical operation
The specimen shall be operated (engaged and separated) to make and break the current load
as specified below.
Speed, duty cycles and number of operations shall be stated in the detail specification or
other applicable specification. One engaging and one separating constitutes one operation.

60512-9-3  IEC:2011 – 7 –
Mechanical aids which simulate normal operation without introducing abnormal stresses may
be used unless otherwise specified by the detail specification.
The engaging and separating speed shall be (50 ± 5) mm/s, if not otherwise specified in the
detail specification or other applicable specification.
There will be a pause between operations of not less than 20 s if not otherwise specified, in
the detail specification or other applicable specification.
4.4 Environmental test conditions
These shall be standard conditions according to IEC 60068-1, unless otherwise stated in the
detail specification.
This test may be required at low air pressure. In this case, the atmospheric conditions shall
be in accordance with test M: Low air pressure of IEC 60068-2-13. The severity shall be as
specified in the detail specification or other applicable specification.
4.5 Measurements
4.5.1 Initial measurements
Before testing according to 4.1 above, the following tests shall be performed:
a) visual examination (IEC 60512-1-1);
b) contact resistance – Millivolt level method (IEC 60512-2-1) ;
c) insulation resistance (IEC 60512-3-1) ;
d) voltage proof (IEC 60512-4-1) ;
e) sealing (IEC 60068-2-13), if applicable.
4.5.2 Measurements during the test
Contact resistance may be monitored during the test according to Contact resistance –
Specified current method (IEC 60512-2-2).
4.5.3 Final measurements
a) Visual examination (IEC 60512-1-1).
b) Contact resistance – Millivolt level method (IEC 60512-2-1).
c) Insulation resistance (IEC 60512-3-1).
d) Voltage proof (IEC 60512-4-1).
e) Sealing (IEC 60068-2-13), if applicable.
The values and requirements shall be in accordance with those details referenced in Clause 5
below.
5 Details to be specified
When this test is required by the detail specific
...