IEC TS 61340-4-2:2013

IEC/TS 61340-4-2 ®
Edition 1.0 2013-06
TECHNICAL
SPECIFICATION
SPÉCIFICATION
TECHNIQUE
colour
inside
Electrostatics –
Part 4-2: Standard test methods for specific applications – Electrostatic
properties of garments
Électrostatique –
Partie 4-2: Méthodes d’essai normalisées pour des applications spécifiques –
Propriétés électrostatiques des vêtements

IEC/TS 61340-4-2:2013
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IEC/TS 61340-4-2 ®
Edition 1.0 2013-06
TECHNICAL
SPECIFICATION
SPÉCIFICATION
TECHNIQUE
colour
inside
Electrostatics –
Part 4-2: Standard test methods for specific applications – Electrostatic

properties of garments
Électrostatique –
Partie 4-2: Méthodes d’essai normalisées pour des applications spécifiques –

Propriétés électrostatiques des vêtements

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
PRICE CODE
INTERNATIONALE
CODE PRIX XA
ICS 17.220.99; 29.020 ISBN 978-2-83220-891-5

– 2 – TS 61340-4-2 © IEC:2013
CONTENTS
FOREWORD . 4
INTRODUCTION . 6
1 Scope . 7
2 Normative references . 7
3 Terms and definitions . 8
4 Atmosphere for conditioning and testing . 8
5 Preparation of samples and test materials . 9
5.1 Samples . 9
5.2 Test equipment and materials . 9
6 Test methods. 9
6.1 General . 9
6.2 Resistance and resistivity . 10
6.2.1 Selection of the appropriate resistance measurement test method . 10
6.2.2 Conversion to resistivity values . 11
6.3 Charge decay time . 11
6.3.1 Selection of the appropriate charge decay time test method . 11
6.3.2 Corona charging method . 12
6.3.3 Induction charging method . 12
6.3.4 Charge decay by conduction through a garment to a human body . 12
6.3.5 Surface potential suppression of isolated garments . 12
6.4 Measurement of electrostatic discharges . 12
6.5 Field suppression . 13
6.6 Tribocharging tests . 13
6.6.1 General . 13
6.6.2 Tribocharging by removal of garments . 14
6.6.3 Tribocharging the outer surface of garments . 14
6.6.4 Tribocharging using seats . 14
6.7 Clinging tests . 14
6.8 Capacitance loading . 14
Annex A (normative) Tribocharging by removal of garments. 16
Annex B (normative) Tribocharging using seats . 20
Annex C (normative) Test of chargeability . 25
Annex D (normative) Capacitance loading . 37
Annex E (informative) Simple tribocharging tests . 49
Bibliography . 50

Figure A.1 – Test equipment for measuring body voltage and charge on removed
garments . 17
Figure B.1 – Example of test equipment set up for measuring body voltage when rising
from a seat . 22
Figure B.2 – Typical body voltage recordings . 24
Figure C.1 – Diagram of the test stand with a mannequin . 26
Figure C.2 – Measuring scheme with a mannequin and Faraday cage . 27
Figure C.3 – Measuring scheme with a mannequin and net table . 27
Figure C.4 – Net table used to measure the charging level of clothes . 28

TS 61340-4-2 © IEC:2013 – 3 –
Figure C.5 – Measuring scheme with a test person and net table . 29
Figure C.6 – Possible ways of taking off clothes from the mannequin trunk or from the
test person . 32
Figure C.7 – Diagram of the stand for testing mechanical tribocharging on the outer
surface of clothing . 34
Figure C.8 – Diagram of the system for measurement of the test person charging level
resulting from manual rubbing of its clothing . 35
Figure D.1 – Example of an arrangement for measurement of corona charge decay
and arrangements for ‘open backing’ and ‘earthed backing’ . 38
Figure D.2 – Equipment for charge decay time calibration . 40
Figure D.3 – Arrangement for measuring received charge . 41
Figure D.4 – Example of variation of capacitance loading with quantity of corona . 45
Figure D.5 – Adjustment of factor for matching induction to conduction measurements . 48

Table 1 – Suitability of test methods for garments and garment materials . 10
Table 2 – Test method standards for resistance measurements . 10

– 4 – TS 61340-4-2 © IEC:2013
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
ELECTROSTATICS –
Part 4-2: Standard test methods for specific applications –
Electrostatic properties of garments

FOREWORD
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