IEC 60068-2-6
Edition 7.0 2007-12
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Environmental testing –
Part 2-6: Tests – Test Fc: Vibration (sinusoidal)
Essais d'environnement –
Partie 2-6: Essais – Essai Fc: Vibrations (sinusoïdales)
IEC 60068-2-6:2007
IEC 60068-2-6
Edition 7.0 2007-12
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Environmental testing –
Part 2-6: Tests – Test Fc: Vibration (sinusoidal)
Essais d'environnement –
Partie 2-6: Essais – Essai Fc: Vibrations (sinusoïdales)
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
X
ICS 19.040
PRICE CODE
CODE PRIX
ISBN 2-8318-9490-5
– 2 – 60068-2-6 © IEC:2007
CONTENTS
FOREWORD...........................................................................................................................4
INTRODUCTION.....................................................................................................................6
1
Scope...............................................................................................................................7
2 Normative references........................................................................................................7
3 Terms and definitions .......................................................................................................7
4 Requirements for testing.................................................................................................10
4.1 Required characteristics ........................................................................................10
4.1.1 Basic motion..............................................................................................10
4.1.2 Spurious motion.........................................................................................10
4.1.3 Signal tolerance.........................................................................................11
4.1.4 Vibration amplitude tolerances ...................................................................11
4.1.5 Frequency tolerances.................................................................................11
4.1.6 Sweep .......................................................................................................12
4.2 Control strategy .....................................................................................................12
4.2.1 Single/multipoint control.............................................................................12
4.2.2 Multi-reference control ...............................................................................13
4.3 Mounting ...............................................................................................................13
5 Severities .......................................................................................................................13
5.1 Frequency range....................................................................................................14
5.1.1 Lower frequency f
1
Hz ...............................................................................14
5.1.2 Upper frequency f
2
Hz ...............................................................................14
5.2 Vibration amplitude................................................................................................14
5.3 Duration of endurance ...........................................................................................17
5.3.1 Endurance by sweeping .............................................................................17
5.3.2 Endurance at fixed frequencies ..................................................................18
6 Preconditioning...............................................................................................................18
7 Initial measurements.......................................................................................................18
8 Testing ...........................................................................................................................18
8.1 General .................................................................................................................18
8.2 Vibration response investigation.............................................................................19
8.3 Endurance procedures...........................................................................................19
8.3.1 Endurance by sweeping .............................................................................19
8.3.2 Endurance at fixed frequencies ..................................................................19
9 Intermediate measurements............................................................................................20
10 Recovery ........................................................................................................................20
11 Final measurements .......................................................................................................20
12 Information to be given in the relevant specification.........................................................20
13 Information to be given in the test report .........................................................................21
Annex A (informative) Guide to test Fc .................................................................................23
Annex B (informative) Examples of severities primarily intended for components ..................36
Annex C (informative) Examples of severities primarily intended for equipment.....................37
Bibliography..........................................................................................................................39
60068-2-6 © IEC:2007 – 3 –
Figure 1 – Nomogram relating vibration amplitude to frequency with lower cross-over
frequency (8 Hz to 10 Hz)......................................................................................................15
Figure 2 – Nomogram relating vibration amplitude to frequency with higher cross-over
frequency (58 Hz to 62 Hz)....................................................................................................16
Figure 3 – Nomogram relating vibration displacement amplitude to frequency (only
applicable for frequency ranges with an upper frequency of 10 Hz) ........................................17
Figure A.1 – Generalized transmissibility factors for vibration isolators...................................33
Table A.1 – Number of sweep cycles and associated endurance times per axis .....................30
Table A.2 – CB response time ...............................................................................................31
Table A.3 – CPB response time.............................................................................................32
Table B.1 – Endurance by sweeping – Examples with higher cross-over frequency ................36
Table C.1 – Endurance by sweeping – Examples with lower cross-over frequency .................37
Table C.2 – Endurance by sweeping – Examples with higher cross-over frequency................38
– 4 – 60068-2-6 © IEC:2007
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
ENVIRONMENTAL TESTING –
Part 2: Tests – Test Fc: Vibration (sinusoidal)
FOREWORD
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International Standard IEC 60068-2-6 has been prepared by IEC technical committee 104:
Environmental conditions, classification and methods of test.
This seventh edition cancels and replaces the sixth edition, published in 1995. It consitutes a
technical revision.
The major changes with regard to the previous edition concern:
⎯ The agreed wording from IEC technical committee 104 meeting held in Stockholm:2000
on the testing of soft packages.
⎯ Reference to the latest version of IEC 60068-2-47:Mounting
⎯ Simplification of the layout of the standard by replacing some tables with text.
⎯ Addition of the test report requirements (see Clause 13).
