IEC 60691:2002/AMD1:2006

IEC 60691 ®
Edition 3.0 2006-09
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
A MENDMENT 1
AM ENDEMENT 1
Thermal-links – Requirements and application guide

Protecteurs thermiques – Prescriptions et guide d'application

IEC 60691:2002-12/AMD1:2006-09(en-fr)

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IEC 60691 ®
Edition 3.0 2006-09
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
A MENDMENT 1
AM ENDEMENT 1
Thermal-links – Requirements and application guide

Protecteurs thermiques – Prescriptions et guide d'application

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 29.120.50 ISBN 978-2-8322-2192-1

– 2 – IEC 60691:2002/AMD1:2006
© IEC 2006
FOREWORD
This amendment has been prepared by subcommittee 32C: Miniature fuses, of IEC technical
committee 32: Fuses.
This bilingual version (2015-01) corresponds to the English version, published in 2006-09.
The text of this amendment is based on the following documents:
FDIS Report on voting
32C/395/FDIS 32C/400/RVD
Full information on the voting for the approval of this amendment can be found in the report
on voting indicated in the above table.
The French version of this amendment has not been vote upon.
The committee has decided that the contents of this amendment and the base publication will
remain unchanged until the maintenance result 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• withdrawn,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.
_____________
Page 3
CONTENTS
Add, after Clause 12, the following new Clause heading:
13 Manufacturer’s validation programme

Page 5
FOREWORD
Add the following new paragraphs 7), 8) and 9) to the first part of the Foreword:
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.

© IEC 2006
Replace the last paragraph on page 5 by the following:
The basis for this standard is the harmonization of the USA national standard, UL 1020, fifth
edition (withdrawn 2003), and IEC 60691, second edition, together with its amendments 1
and 2.
Page 7
Replace the first paragraph by the following:
The committee has decided that the contents of this publication will remain unchanged until
)
the maintenance result 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
A bilingual version of this amendment may be issued at a later date.
Add the following footnote to the bottom of page 7:
)
The National Committees are requested to note that for this publication the maintenance result date is 2009.

Page 13
2 Normative references
Add, after IEC 60065:2001, the following:
Amendment 1 (2005)
Replace the reference to IEC 60085:1984, by the following:
IEC 60085:2004, Electrical insulation –Thermal classification
Replace the reference to IEC 60112 (including its footnote) by the following:
IEC 60112:2003, Method for the determination of the proof and the comparative tracking
indices of solid insulating materials
Add, after IEC 60664-1, the following:
Amendment 1 (2000)
Amendment 2 (2002)
Replace the reference to IEC 60695-10-2:1995 by the following:
IEC 60695-10-2:2003, Fire hazard testing – Part 10-2: Abnormal heat – Ball pressure test
Add, after IEC 60695-11-10:1999, the following:
Amendment 1 (2003)
– 4 – IEC 60691:2002/AMD1:2006
© IEC 2006
Add, after IEC 60730-1:1999, the following:
Amendment 1 (2003)
Delete the reference to UL 1020:1994.
Page 15
3 Definitions
Replace the existing definition 3.7 by the following:
3.7
pilot duty
rating assigned to a switching device that controls the coil of another electro-mechanical
device such as a solenoid, relay or contactor
Page 19
5 General notes on tests
Replace the existing Clause 5 by the following:
5 General notes on tests
Unless otherwise specified, all tests shall be carried out under the following atmospheric
conditions:
Temperature: 15 °C to 35 °C
Relative humidity: 25 % to 75 %
4 5
Air pressure: 8,6 × 10 Pa to 1,06 × 10 Pa
Where the above-mentioned conditions have a significant influence, they shall be kept
substantially constant during the tests.
If the temperature limits given in this clause are too wide for certain tests, these shall be
repeated, in case of doubt, at a temperature of (23 ± 1) °C.
In every test report, the ambient temperature shall be stated. If the standard conditions for
relative humidity or pressure are not fulfilled during the tests, a note to this affect shall be
added to the report.
If the result of a test is influenced, to an appreciate extent, by the position and method of
mounting of the specimen, the most unfavourable condition shall be chosen for the relevant
tests and recorded.
If a thermal-link has been specifically designed for use in a special type of equipment and
cannot be tested separately, the tests of this standard shall be performed in that equipment or
in the relevant part of it, or similar.
When testing a homogeneous series of thermal-links, all the tests shall be applied to thermal-
links with the lowest and highest T. Thermal-links with intermediate rated functioning
f
temperatures need only be subjected to tests according to 10.6, 11.2, 11.3 and 11.4.

© IEC 2006
The total number of specimens required is 45. Out of a total of 45 specimens, 15 are kept as
spares in case some of the tests have to be repeated. Out of a total of 45 specimens, 30 are
divided into groups assigned an alphabetical letter from A to J. Each group consists of three
specimens. In general, tests shall be performed in the order indicated in Table 1 but, if so
required, tests may be repeated, for example the test on marking (see Clause 7). Additional
samples may be needed according to Note 2 of Table 1.
NOTE 1 For optional tests, additional samples will be required per the annexes.
If, in any of the tests carried out in accordance with any clause, a failure is reported, the
cause of the failure will be identified and corrective action taken. Based on the failure analysis
report and the corrective action, at a minimum, that test sequence shall be repeated on twice
the number of revised specimens and no further failures are allowed.
The conductive heat ageing test of Annex C is applicable when declared by the manufacturer.
Exception: The conductive heat ageing test may be omitted if the thermal-link is constructed
without contacts.
NOTE 2 In the USA the conductive heat ageing test is required to be declared.

– 6 – IEC 60691:2002/AMD1:2006
© IEC 2006
Table 1 – Test schedule
Specimen groups
Clause or
Test
subclause
A B C D E F G H I J
7* Marking (rub test) X X
9 Mechanical requirements
9.2* Tensile force X
9.3* Thrust force X
9.4* Bending/twist force  X
10 Electrical requirements
10.1* Creepage distances and clearances   X X
10.2* Temperature and humidity cycle conditioning X X X  X X
12* Resistance to rusting (ferrous parts only) X X X
10.3* Dielectric strength (if applicable) X X X  X X
10.4* Insulation resistance (if applicable) X X X  X X
10.5* Resistance to tracking  X X
10.6 Interrupting current   X X
10.7* Transient overload current X X   X
11 Temperature tests
11.2 Check on T X X
f
11.3 Check on T followed by dielectric test and  X X
m
insulation resistance
11.4 Ageing X  X  X X X
step 1 (optional) 21 days
step 2 (mandatory) 21 days
step 3 (mandatory) 14 days
step 4 (mandatory) 7 days
step 5 (mandatory) 7 days
step 6 (mandatory) 24 h
10.3 Dielectric strength X X  X X X X X X
10.4 Insulation resistance X X  X X X X X X
...