IEC 61340-4-9:2010

IEC 61340-4-9
®

Edition 1.0 2010-01
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE


Electrostatics –
Part 4-9: Standard test methods for specific applications – Garments

Électrostatique –
Partie 4-9: Méthodes d’essai normalisées pour des applications spécifiques –
Vêtements

IEC 61340-4-9:2010

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IEC 61340-4-9
®

Edition 1.0 2010-01
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE


Electrostatics –
Part 4-9: Standard test methods for specific applications – Garments

Électrostatique –
Partie 4-9: Méthodes d’essai normalisées pour des applications spécifiques –
Vêtements

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
PRICE CODE
INTERNATIONALE
CODE PRIX L
ICS 17.200.99; 29.020 ISBN 978-2-88912-461-9

® Registered trademark of the International Electrotechnical Commission
Marque déposée de la Commission Electrotechnique Internationale

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– 2 – 61340-4-9 © IEC:2010
CONTENTS
FOREWORD . 3
INTRODUCTION . 5
1 Scope . 6
2 Normative references . 6
3 Terms and definitions . 7
4 Personnel safety. 7
5 Test methods . 7
5.1 Test equipment requirements . 7
5.1.1 Resistance measuring equipment . 7
5.1.2 Clamps/electrodes (sleeve-to-sleeve) . 8
5.1.3 Electrodes (point-to-point) . 8
5.1.4 Environmental test chamber . 8
5.1.5 Support surface . 8
5.2 Test parameters . 8
5.2.1 Sample preparation . 8
5.2.2 Humidity . 8
5.2.3 Test sample quantity . 9
5.3 Sleeve-to-sleeve test procedure . 9
5.4 Point-to-point test procedure . 9
6 Test data reporting . 9
7 Recommended electrical resistance range . 9
8 Notes . 9
8.1 Garments with groundable points . 9


Figure 1 – Clamps/electrodes . 10
Figure 2 – Test set-up sleeve-to-sleeve . 10
Figure 3 – Test set-up point-to-point . 11

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61340-4-9 © IEC:2010 – 3 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________

ELECTROSTATICS –

Part 4-9: Standard test methods for specific applications –
Garments


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
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between any IEC Publication and the corresponding national or regional publication shall be clearly indicated in
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services carried out by independent certification bodies.
6) All users should ensure that they have the latest edition of this publication.
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expenses arising out of the publication, use of, or reliance upon, this IEC Publication or any other IEC
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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 61340-4-9 has been prepared by IEC technical committee 101:
Electrostatics.
The text of this standard is based on ANSI/ESD STM2.1-1997. It was submitted to the
National Committees for voting under the Fast Track Procedure.
This bilingual version (2011-04) replaces the English version.

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– 4 – 61340-4-9 © IEC:2010
The text of this standard is based on the following documents:
FDIS Report on voting
101/294/FDIS 101/298/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 French version of this standard has not been voted upon.
This publication has been drafted in accordance with the ISO/IEC Directives, Part 2.
A list of all parts in the IEC 61340 series, under the general title Electrostatics, 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.

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61340-4-9 © IEC:2010 – 5 –
INTRODUCTION
This part of IEC 61340 provides test methods for evaluating the resistance of garments used
in the electronics industry for the control of electrostatic discharge. This part is limited to
defining procedures for measuring electrical resistance of garments. It does not address
electrical resistance through a person or in combination with a person connected to ground.
However, resistance may not fully characterize a garment's performance. Additional parts may
cover procedures for evaluating these properties.
A common source of electrostatic charge is clothing made from synthetic fibres resulting in an
accumulation of charge on a person's clothing. The effect of this charge can be minimized by
evaluating and selecting an appropriate garment. To effectively control electrostatic charges,
the garment should be grounded.
This standard may be used in part to cover specific applications. To fully characterize a
garment, field attenuation and tribocharging may need to be considered, but these procedures
are beyond the scope of this standard.

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ELECTROSTATICS –

Part 4-9: Standard test methods for specific applications –
Garments



1 Scope
This part of IEC 61340 provides specific test methods for evaluating electrical resistance of
static control garments.
This part defines the test methods for determining the electrical resistance from sleeve-to-
sleeve and point-to-point of static control garments.
The test methods defined in this standard utilize standard instruments to measure the
resistance of static control garments. These methods are intended as qualification test
procedures. They can also be used as periodic tests to ensure ongoing electrical integrity of
the garment under ambient conditions.
The sleeve-to-sleeve method (Figures 1 and 2) is intended to test the integrity of the electrical
resistance across the seams of the garment.
The point-to-point test method (Figure 3) is intended to test the electrical resistance between
any two points on the garment, which may include the electrical resistance across the seams
of the garment.
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.
1
ESD ADV1.0, ESD Association glossary of terms
ANSI/ESD S4.1, ESD standard for protection of electrostatic discharge susceptible items –
ESD protective worksurfaces
ANSI/ESD STM11.11, Surface resistance measurement of static dissipative planar materials
ASTM F-150, Standard test method for electrical resistance of conductive and static
2
dissipative resilient flooring
National Fire Protection Association (NFPA) 99:2005, Standard for health care facilities
___________
1
 ESD Association, 7900 Turin Rd, Bldg 3, Ste 2, Rome, NY 13440, 315-339-6937
2
American Society for Testing and Materials (ASTM) 100 Barr Harbor Drive, West Conshohocken, PA 19428-
2959, 610-832-9500

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61340-4-9 © IEC:2010 – 7 –
3 Terms and definitions
For the purposes of this document, the following terms and definitions, in addition to those
specified in the EOS/ESD glossary of terms, shall apply.
3.1
garment system
any electrically interconnected components of static control apparel
3.2
point-to-point resistance
resistance in ohms measured from one point to another on the surface of the same panel or
two different panels of a garment
3.3
sleeve-to-sleeve resistance
resistance in ohms measured from the sleeve opening of the garment to the other sleeve
opening of the same garment
3.4
static control garments
personnel garments that are designed for electrostatic charge control
4 Personnel safety
4.1 The procedures and equipment described in this standard may expose personnel to
hazardous electrical conditions. Users of this standard are responsible for selecting
equipment that complies with applicable laws, regulatory codes and external and internal
policy. Users are cautioned that this standard cannot replace or supercede any requirements
for personnel safety. The ultimate responsibility for personnel safety resides with the end user
of this standard.
4.2 Ground fault circuit interrupters (GFCI) and other safety protection should be
considered wherever personnel might come into contact with electrical sources.
4.3 Electrical hazard reduction practices should be exercised and proper grounding
instructions for the equipment must be followed when performing these tests.
5 Test methods
This clause defines the test methods for measuring the sleeve-to-sleeve and point-to-point
electrical resistance of a static control garment or garment system.
5.1 Test equipment requirements
5.1.1 Resistance measuring equipment
Self-contained resistance meters (i.e. megohmmeter) or power supplies and current meters in
the appropriate configuration for resistance measurement within a ±10 % accuracy shall be
utilized. The equipment shall be capable of open-circuit voltage of 100 V ±10 V d.c. Both test
leads must be isolated from ground.

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5.1.2 Clamps/electrodes (sleeve-to-sleeve)
The electrodes shall consist of two flat electrically conductive plates (e.g. stainless steel) with
a dimension of 50,8 mm × 25,4 mm (2" × 1") each as shown in Figure 1. The clamps shall be
electrically conductive with sufficient pressure to suspend the garment, see Figure 2.
5.1.3 Electrodes (point-to-point)
Use electrodes in accordance with ANSI/EOS/ESD S4.1 (ie. two cylindrical 2,27 kg (5 pound)
electrodes with a diameter of 63,5 mm (2,5" each having contacts of electrically conductive
material with a shore-A (IRHD) durometer hardness of 50-70). The resistance between the
two electrodes should be less than 100 kΩ when measured at 10 V on a metallic surface.
Electrodes that meet ASTM F-150 and NFPA 99 also meet these characteristics.)
5.1.4 Environmental test chamber
A closed chamber capable of controlling relative humidity (RH) at (12 ± 3) % RH and
(50 ± 5) % RH and a temperature of (23 ± 3) °C. The humidity indicating instrumentation shall
be accurate to within ± 3 % RH in the operation range and traceable to national standards,
such as the National Institute of Standards and Technology (NIST) in the United States or
3
international standards.
5.1.5 Support surface
The support surface shall be a smooth flat insulative surface. Surface resistance of the
13
support surface shall be greater than 1,0 Ω × 10 Ω when tested in accordance with
EOS/ESD S11.11.
5.2 Test parameters
5.2.1 Sample preparation
The test sample shall be processed through 3 cycles of the garment material manufacturer's
prescribed cleaning process prior to performing the test.
5.2.1.1 Sample sketch
Tester should examine the garment's construction and make a general sketch showing
separate FRONT and BACK panels used to fabricate the garment. Number the panels for
measurement identification purposes from n° 1 through to n° n. Identify the sleeves as LEFT
and RIGHT.
5.2.2 Humidity
The test samples shall be tested at two humidity conditions.
5.2.2.1 Low humidity
The test sample shall be preconditioned at (12 ± 3) % RH and (23 ± 3) °C for a minimum of
48 h prior to performing the test at these environmental conditions.
5.2.2.2 Moderate humidity
The test sample shall be preconditioned at (50 ± 5) % RH and (23 ± 3) °C for a minimum of
48 h prior to performing the test at these environmental conditions.
___________
3
 National Institute of Standards and Technology, Bldg 820, NIST North, Gaithersburg, MD 20899, 301-948-
1784.

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61340-4-9 © IEC:2010 – 9 –
5.2.3 Test sample quantity
Test all samples for each style and manufacturer when using this test procedure as a
qualification test.
5.3 Sleeve-to-sleeve test procedure
The following procedure shall be followed:
a) Precondition the test samples as shown in 5.2.2.1.
b) Hang the garment from each sleeve with electrically isolated clamps. Clamps shall be
placed over the sleeves as shown in Figure 2.
c) The resistance measurement shall be made by applying the voltage lead (positive) to one
clamp and attaching the sensor lead (negative) to the other clamp.
d) Apply the test voltage of 100 V for a maximum of 15 s (or until reading stabilizes) and
record the results.
e) Repeat this sleeve-to-sleeve resistance measurement procedure (5.3 point b) through 5.3
point d)) with the remaining two (minimum) garment samples.
f) Precondition the test samples as shown in 5.2.2.2.
g) Repeat this sleeve-to-sleeve resistance measurement procedure (5.3 point b) through 5.3
point e) with the remaining two (minimum) garment samples at moderate humidity.
5.4 Point-to-point test procedure
The following procedure shall be followed:
a) Precondition the test samples as shown in 5.2.2.1.
b) Place the garment on an insulative surface per 5.1.5.
c) Place one electrode on a panel of the sample.
d) Place the second electrode on another panel of the same sample (Figure 3).
e) Apply the test voltage of 100 V for a maximum of 15 s or until reading stabilizes and
record results.
f) Repeat 5.4, poind d) through 5.4 point e) for all panels.
g) Repeat 5.4 point b) through 5.4 point f) for all test samples.
h) Precondition samples as shown in 5.2.2.2.
i) Repeat 5.4 point b) through 5.4 point g) for all samples.
6 Test data reporting
Record all resistance values in ohms. Record the voltage levels, humidity, and temperature
for each test sample. Record type of test equipment used. Record test date.
7 Recommended electrical resistance range
5 11
The recommended electrical resistance range is 1 Ω × 10 Ω to 1 Ω × 10 Ω. Values less

5
than 1 Ω × 10 Ω may constitute an electrical hazard.
8 Notes
8.1 Garments with groundable points
If the garment has an identified groundable point, the electrical integrity of the groundable
point to the garment material shall be measured. This can be accomplished using the point-to-
point method described herein. Place one electrode on the groundable point and the second

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– 10 – 61340-4-9 © IEC:2010
electrode on the panel attached to the groundable point. Complete the test as described
herein.
Test lead connection
Clamp - Electrically conductive
Electrode 1
(stainless steel)
2″
1″
Electrode 2
(stainless steel)

IEC  2588/09

2
NOTE Electrode 1 and Electrode 2 are in stainless steel and each has a minimum area of 2 “ on the same
contacting surfaces.
Figure 1 – Clamps/electrodes

Insulators
Clamps
Megohmmeter
IEC  2589/09

Figure 2 – Test set-up sleeve-to-sleeve

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61340-4-9 © IEC:2010 – 11 –

Megohmmeter
Insulative
surface
Five pound
electrodes
IEC  2590/09

Figure 3 – Test set-up point-to-point


___________

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SOMMAIRE
AVANT-PROPOS . 13
INTRODUCTION . 15
1 Domaine d’application . 16
2 Références normatives . 16
3 Termes et définitions . 17
4 Sécurité du personnel . 17
5 Méthodes d’essai . 17
5.1 Exigences pour l’équipement d’essai . 17
5.1.1 Equipement de mesure de la résistance . 17
5.1.2 Pinces/électrodes (manche à manche) . 18
5.1.3 Electrodes (point à point) . 18
5.1.4 Chambre climatique d’essai . 18
5.1.5 Surface du support . 18
5.2 Paramètres d’essai . 18
5.2.1 Préparation de l’échantillon . 18
5.2.2 Humidité . 18
5.2.3 Nombre d’échantillons d’essai . 19
5.3 Procédure d’essai manche à manche . 19
5.4 Procédure d’essai point à point . 19
6 Conservation des données d’essai . 19
7 Plage de résistance électrique recommandée . 19
8 Notes . 20
8.1 Vêtements avec points pouvant être reliés à la terre . 20


Figure 1 – Pinces/électrodes . 20
Figure 2 – Montage d’essai manche à manche . 20
Figure 3 – Montage d’essai point à point . 21

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61340-4-9 © CEI:2010 – 13 –
COMMISSION ÉLECTROTECHNIQUE INTERNATIONALE
____________

ÉLECTROSTATIQUE –

Partie 4-9: Méthodes d’essai normalisées
pour des applications spécifiques –
Vêtements


AVANT-PROPOS
1) La Commission Electrotechnique Internationale (CEI) est une organisation mondiale de normalisation
composée de l'ensemble des comités électrotechniques nationaux (Comités nationaux de la CEI). La CEI a
pour objet de favoriser la coopération internationale pour toutes les questions de normalisation dans les
domaines de l'électricité et de l'électronique. A cet effet, la CEI – entre autres activités – publie des Normes
internationales, des Spécifications techniques, des Rapports techniques, des Spécifications accessibles au
public (PAS) et des Guides (ci-après dénommés "Publication(s) de la CEI"). Leur élaboration est confiée à des
comités d'études, aux travaux desquels tout Comité national intéressé par le sujet traité peut participer. Les
organisations internationales, gouvernementales et non gouvernementales, en liaison avec la CEI, participent
également aux travaux. La CEI collabore étroitement avec l'Organisation Internationale de Normalisation (ISO),
selon des conditions fixées par accord entre les deux organisations.
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intéressés sont représentés dans chaque comité d’études.
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comme telles par les Comités nationaux de la CEI. Tous les efforts raisonnables sont entrepris afin que la CEI
s'assure de l'exactitude du contenu technique de ses publications; la CEI ne peut pas être tenue responsable
de
...