EN 60895:2003

SLOVENSKI SIST EN 60895:2004
STANDARD
februar 2004
Delo pod napetostjo – Prevodne obleke za uporabo pri nazivni izmenični
napetosti do 800 kV in enosmerni napetosti ±600 kV (IEC 60895:2002,
spremenjen)
Live working - Conductive clothing for use at nominal voltage up to 800 kV a.c. and
± 600 kV d.c.
ICS 13.260; 13.340.10 Referenčna številka
©  Standard je založil in izdal Slovenski inštitut za standardizacijo. Razmnoževanje ali kopiranje celote ali delov tega dokumenta ni dovoljeno

NORME CEI
INTERNATIONALE IEC
INTERNATIONAL
Deuxième édition
STANDARD
Second edition
2002-08
Travaux sous tension –
Vêtements conducteurs pour usage jusqu'à 800 kV
de tension nominale en courant alternatif et
±±600 kV en courant continu
±±
Live working –
Conductive clothing for use at nominal voltage
up to 800 kV a.c. and ±±±±600 kV d.c.
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Commission Electrotechnique Internationale PRICE CODE
International Electrotechnical Commission
Международная Электротехническая Комиссия
Pour prix, voir catalogue en vigueur
For price, see current catalogue

60895  IEC:2002 – 3 –
CONTENTS
FOREWORD . 9
INTRODUCTION .13
1 Scope .15
2 Normative references.15
3 Terms and definitions .17
4 Technical requirements.19
4.1 General .19
4.2 Technical requirements for conductive material .19
4.2.1 Flame retardancy.19
4.2.2 Electrical resistance.19
4.2.3 Current-carrying capability .21
4.2.4 Shielding and screening efficiencies .21
4.2.5 Requirements to withstand cleaning.21
4.2.6 Spark-discharge protection .21
4.3 Specific requirements for component parts .21
4.3.1 Conductive gloves, overshoe socks and socks.21
4.3.2 Conductive footwear .21
4.3.3 Conductive head cover and face screen.21
4.4 Marking .23
4.5 Packaging.23
4.6 Manufacturer’s instructions .23
5 Type tests of conductive material (specimen).23
5.1 Flame-retardancy test.23
5.1.1 Principle of test.23
5.1.2 Test apparatus.23
5.1.3 Test specimens.25
5.1.4 Test procedure.27
5.1.5 Results .29
5.2 Electrical resistance test.29
5.2.1 Test equipment .29
5.2.2 Preparation of test specimens.31
5.2.3 Procedure.31
5.2.4 Test results.31
5.3 Current-carrying capability.33
5.3.1 Test equipment .33
5.3.2 Preparation of test specimens.33
5.3.3 Procedure.33
5.3.4 Test results.33
5.4 Shielding efficiency.33
5.4.1 Test equipment .33
5.4.2 Test mounting.33
5.4.3 Earth connection.35
5.4.4 Line connection .35
5.4.5 Test procedure.35

60895  IEC:2002 – 5 –
5.5 Resistance to cleaning.35
5.5.1 Laundering.35
5.5.2 Dry-cleaning .37
5.5.3 Acceptability of material.39
6 Type tests of garment .39
6.1 General .39
6.2 Electrical resistance .39
6.2.1 Test procedure.39
6.2.2 Measurement locations .41
6.2.3 Acceptable values.41
7 Type tests of the complete clothing.41
7.1 Bonding test .41
7.2 Efficiency of conductive clothing .41
8 Type test of the component parts.43
8.1 Conductive gloves and mitts .43
8.2 Conductive overshoe socks and normal socks .43
8.3 Conductive footwear .43
8.4 Conductive head cover and face screen .45
9 Routine tests .45
9.1 Parts of conductive clothing from a single manufacturer .45
9.2 Parts of conductive clothing from multiple manufacturers.45
10 Acceptance checks and tests.45
11 Modification .47
Annex A (normative) Suitable for live working (double triangle) (IEC-60417-5216) .63
Annex B (normative) Classification of tests .65
B.1 Tests on conductive material .65
B.2 Tests on the conductive garment .65
B.3 Tests on the conductive component parts .65
B.4 Tests on the complete clothing .67
Annex C (normative) Sampling procedure .69
C.1 General .69
C.2 Classification of defects.69
C.3 General sampling plan.69
C.4 Procedure when testing is carried out in a laboratory
other than the manufacturer’s .69
Annex D (informative) Electrodes for determining electrical resistance properties
of material specimen and garments.71
D.1 General .71
D.2 Conductive paint.71
Annex E (informative) Recommendations for the in-service care, maintenance and
periodic testing of conductive clothing and component parts .73
E.1 Care, storage and repair.73
E.2 Inspection before use .75
E.3 Non-destructive periodic testing.75
Bibliography.79

60895  IEC:2002 – 7 –
Figure 1 – Example of general arrangement of complete conductive clothing
(see clause 3) .47
Figure 2 – Flame-retardancy test – Test chamber (see 5.1).49
Figure 3 – Flame-retardancy test – Specimen holder and support (see 5.1) .51
Figure 4 – Electrical resistance test – Test set-up (see 5.2.3) .53
Figure 5 – Orientation of test specimens for electrical resistance
and current-carrying capability tests (see 5.2.2) .53
Figure 6 – Electrical resistance test – Electrical circuit (see 5.2.3) .53
Figure 7 – Shielding efficiency (see 5.4).55
Figure 8 – Efficiency of conductive clothing (see 7.2).57
Figure 9 – Electrical resistance test – Conductive gloves and mitts (see 8.1) .59
Figure 10 – Electrical resistance test – Conductive overshoe socks
and normal socks (see 8.2) .59
Figure 11 – Electrical resistance test – Conductive footwear (see 8.3) .61
Table B.1 – List of tests to be carried out on the conductive material .65
Table B.2 – List of tests to be carried out on the conductive garment .65
Table B.3 – List of tests to be carried out on the component parts.67
Table B.4 – List of tests to be carried out on the complete clothing .67
Table C.1 – Sampling plan (AQL 10) .69

60895  IEC:2002 – 9 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
LIVE WORKING –
CONDUCTIVE CLOTHING FOR USE AT NOMINAL VOLTAGE
UP TO 800 kV AC AND ±600 kV DC
FOREWORD
1) The IEC (International Electrotechnical Commission) is a worldwide organization for standardization comprising
all national electrotechnical committees (IEC National Committees). The object of the 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, the IEC publishes International Standards. 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. The 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 the 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 National Committees.
3) The documents produced have the form of recommendations for international use and are published in the form
of standards, technical specifications, technical reports or guides and they are accepted by the National
Committees in that sense.
4) In order to promote international unification, IEC National Committees undertake to apply IEC International
Standards transparently to the maximum extent possible in their national and regional standards. Any
divergence between the IEC Standard and the corresponding national or regional standard shall be clearly
indicated in the latter.
5) The IEC provides no marking procedure to indicate its approval and cannot be rendered responsible for any
equipment declared to be in conformity with one of its standards.
6) Attention is drawn to the possibility that some of the elements of this International Standard may be the subject
of patent rights. The IEC shall not be held responsible for identifying any or all such patent rights.
International Standard IEC 60895 has been prepared by IEC technical committee 78: Live
working.
This second edition cancels and replaces the first edition, published in 1987 and constitutes a
technical revision of several sections:
– the scope has been extended to cover the use of conductive clothing to ±600 kV d.c.;
– revision of the electrical resistance requirements of the fabrics used in conductive
clothing;
– revision of the testing procedures for complete clothing.
The text of this standard is based on the following documents:
FDIS Report on voting
78/469/FDIS 78/478/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 3.

60895  IEC:2002 – 11 –
The committee has decided that the contents of this publication will remain unchanged
until 2007. At this date, the publication will be
• reconfirmed;
• withdrawn;
• replaced by a revised edition, or
• amended.
The contents of the corrigendum of February 2003 have been included in this copy.

60895  IEC:2002 – 13 –
INTRODUCTION
This International Standard provides specifications for protective conductive clothing currently
being used without incident in live work by qualified electrical workers throughout the world.
The adequacy of this clothing is established by its screening efficiency and the electrical
resistance of material and component parts of the conductive clothing. Based on resistance
measurements carried out by manufacturers and utilities of used clothing being successfully
worn in the field, differences of up to 1 000 fold have been reported.
Verification tests have shown that the clothing is equally effective against the electric field
existing in the vicinity of installations up to 800 kV a.c. and ±600 kV d.c.
This standard has been prepared according to the requirements of IEC 61477, where
applicable.
60895  IEC:2002 – 15 –
LIVE WORKING –
CONDUCTIVE CLOTHING FOR USE AT NOMINAL VOLTAGE
UP TO 800 kV AC AND ±600 kV DC
1 Scope
This International Standard is applicable to conductive clothing, either assembled from
component parts or forming a single complete clothing, worn by (electrically) skilled persons
during live working (especially bare-hand working) at a nominal power system voltage up to
800 kV a.c. and ±600 kV d.c.
It is applicable to conductive jackets, trousers, coveralls (one-piece clothing), gloves or mitts,
hoods, shoes, overshoe socks and socks.
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 60050-151:2001, International Electrotechnical Vocabulary (IEV) – Part 151: Electrical and
magnetic devices
IEC 60050-651:1999, International Electrotechnical Vocabulary (IEV) – Part 651: Live working
IEC 60050-826:1982, International Electrotechnical Vocabulary (IEV) – Chapter 826: Elect-
rical installations of buildings
IEC 60212:1971, Standard conditions for use prior to and during the testing of solid electrical
insulating materials
IEC 60417 (all parts), Graphical symbols for use on equipment
IEC 60456:1998, Clothes washing machines for household use – Methods for measuring the
performance
IEC 60743:2001, Live working – Terminology for tools, equipment and devices
IEC 61318/TR2:1994, Live working – Guidelines for quality assurance plans
IEC 61477:2001, Live working – Minimum requirements for the utilization of tools, devices and
equipment
ISO 2859-1:1999, Sampling procedures for inspection by attributes – Part 1: Sampling
schemes indexed by acceptance quality limit (AQL) for lot-by-lot inspection
ISO 3175:(all parts), Textiles – Professional textile cleaning and finishing
ISO 3290:2001, Rolling bearings – Balls – Dimensions and tolerances

60895  IEC:2002 – 17 –
ISO 6330:2000, Textiles – Domestic washing and drying procedures for textile testing
ISO 9000:2000, Quality management systems – Fundamentals and vocabulary
ISO 9001:2000, Quality management systems – Requirements
ISO 9004:2000, Quality management systems – Guidelines for performance improvements
3 Terms and definitions
For the purposes of this International Standard, the following definitions apply.
NOTE Further information on terminology is illustrated in figure 1.
3.1
conductive clothing
clothing made of natural or synthetic material with integral interwoven conductive fibres, or
layers, used to provide electrical continuity between all parts of the clothing and a reduction of
electric field
[IEC 60743, definition 8.2.7, modified]
3.2
conductive material
material composed of metallic threads or non-metallic conductive substances and natural or
synthetic threads closely woven, knitted, or layered
3.3
equipotential bonding lead (bonding lead)
flexible metallic connection used by the worker to connect or disconnect his or her conductive
clothing, bucket or screen, to or from another conductive part to create equipotential bonding
NOTE 1 This lead is not an earthing device.
NOTE 2 The means of securing or connecting the lead shall be such that under emergency conditions, for
example, a fall, the lead can separate.
[IEV 651-07-07, modified]
3.4
head cover (hood)
part of the clothing, either as a separate item or integrated into a complete garment, that
covers the head
3.5
face screen for electrical works
protective device made of conductive, solid, or meshed material
NOTE It provides electrical continuity with the conductive clothing of the worker and a reduction of electric field to
the face, or part thereof
[IEC 60743, definition 8.4.3]
3.6
conductive overshoe sock
sock made of conductive material and worn over shoe/boot
3.7
garment
main body of the clothing consisting of jacket and trousers

60895  IEC:2002 – 19 –
3.8
component parts
additional elements of the complete clothing such as gloves, socks, head protection, and
footwear worn in addition to the main garment and bounded to it
3.9
shielding efficiency
base log 10 of the ratio of a voltage without the conductive clothing to the voltage measured
at the spot with conductive clothing
3.10
screening efficiency
per cent ratio of the total current injected into the conductive clothing to the current flowing in
the body
3.11
equipotential bonding
electrical connection putting various exposed conductive parts and extraneous conductive
parts at a substantially equal potential
[IEV 826-04-09]
4 Technical requirements
4.1 General
The conductive clothing shall constitute an electrically continuous assembly for the worker.
If press studs, zip fasteners, hooks and eyes or any other method of fastening are used in the
assembly of the complete clothing, care should be taken to ensure that the electrical
conductivity of the clothing is not impaired.
Bonding lead shall be capable of withstanding anticipated electrical and mechanical stresses.
4.2 Technical requirements for conductive material
The material used to manufacture the conductive clothing shall have the following properties.
NOTE The material used to manufacture the conductive clothing should be resistant to abrasion and to tearing.
4.2.1 Flame retardancy
The material used in conductive clothing shall not ignite and continue to burn when exposed
to an ignition source.
4.2.2 Electrical resistance
This quality can be considered as a basic element which determines the current-carrying
capability and the spark-discharge properties of the material.
The only direct consequence for a worker of the correct value of electrical resistance is the
low potential difference between two points of the cloth in contact with the skin, which is thus
an element of comfort.
60895  IEC:2002 – 21 –
4.2.3 Current-carrying capability
During the worker's travel to his working position (from the metallic structure of the tower or
from the ground in an aerial device) and at the moment of his connection to the live
conductor, capacitive currents flow through his clothing. It is necessary for the clothing to be
able to conduct them. There shall be no damage to the material.
4.2.4 Shielding and screening efficiencies
The material used for the conductive clothing or the component parts shall attenuate the
electric field. The attenuation of the material is determined by shielding efficiency, and that of
the conductive clothing by screening efficiency. Shielding and screening efficiencies are
defined in 3.9 and 3.10.
These efficiencies shall meet the requirements of this standard.
4.2.5 Requirements to withstand cleaning
To ensure that the efficiency and flame-retardant properties of the conductive clothing do not
deteriorate excessively after repeated cleaning, the material shall be subjected to 10 wash-
dry cycles in accordance with ISO 6330 and/or 10 dry-cleaning cycles in accordance with
ISO 3175. After completion of the 10 washing/cleaning cycles, the shielding efficiency and
flame-retardant properties of the material shall still meet the specified requirements.
4.2.6 Spark-discharge protection
To provide protection to the worker from direct spark discharges, the spacing between any
individual adjacent conducting components in the conductive material (except for the face
screen) shall not exceed 5 mm under all normal wearing conditions including stretching (such
as at the elbows or knees).
4.3 Specific requirements for component parts
4.3.1 Conductive gloves, overshoe socks and socks
The maximum resistance value of gloves and overshoe socks or socks, when measured using
the specified electrodes, is determined by the manufacturer to meet the bonding requirements
of 7.1.
4.3.2 Conductive footwear
The maximum resistance value, when measured using the specified electrodes, is determined
by the manufacturer to meet the bonding requirements of 7.1.
4.3.3 Conductive head cover and face screen
A conductive head cover is necessary to provide the worker with a full screening effect.
Further screening protection can be provided by a conductive screen for the face.
If no face screen is provided, protective flaps, conductive visor and the shape of the hood
shall ensure face protection. Provision shall be made for an effective and efficient electrical
bond between any head cover, screen or face screen and the total garment.
The resistance of the bond shall be checked and meet the requirements of 7.1.

60895  IEC:2002 – 23 –
4.4 Marking
Each conductive item shall carry, as a minimum, the following permanent markings:
– name or trade mark of the manufacturer;
– type reference and size (in accordance with ISO standards);
– year of manufacture;
– symbol IEC-60417-5216 – suitable for live working; double triangle (see annex A),
attached by sewing, adhesion or other suitable means;
– number of the relevant IEC standard immediately adjacent to the symbol with year of
publication (four digits) (IEC 60895:2002).
Markings shall be clearly visible and legible to a person with normal or corrected vision
without additional magnification.
4.5 Packaging
The conductive material may become oxidized when stored in the ambient air conditions. The
manufactured clothing shall be packaged for shipment in such a way that oxidation is
retarded. If the parts of clothing are to be issued by the user separately, individual packaging
of parts should be requested by the user. For example, the conductive clothing may be
packaged inside an airtight plastic bag with tissue paper protecting the conductive clothing
from contact with the plastic bag.
4.6 Manufacturer’s instructions
Each piece of the conductive clothing shall come with the manufacturer’s instructions for use
and care. These instructions shall include, as a minimum, recommendations for cleaning,
storage and periodic testing.
5 Type tests of conductive material (specimen)
These tests shall apply to specimens of the material used in the manufacturing of conductive
clothing.
5.1 Flame-retardancy test
5.1.1 Principle of test
Ignition of a rectangular test specimen, vertically hung, by a standard ignition source
according to prescribed conditions constitutes the principle of the test, which includes the
measurement of the burned area and classification of the tested material according to
the results.
5.1.2 Test apparatus
The test equipment shall consist of
– a test chamber,
– a specimen holder,
– accessories.
60895  IEC:2002 – 25 –
5.1.2.1 Test chamber
The test chamber (see figure 2) shall be made of steel plate not less than 1,5 mm thick.
The interior walls of the chamber shall be painted matt black.
The chamber shall be composed of
a) a steel box 570 mm wide × 400 mm deep × 1 000 mm high, with one air vent each in the
lower back and front. These air vents shall measure 116 mm in height and 440 mm in
length;
b) a glass door above the front air vent;
c) a 300 mm × 300 mm steel deflector plate above the top of the chamber, which is
penetrated by a 200 mm diameter hole;
d) a support for the test specimen holder (see figure 3a). The lower part of the test specimen
holder shall be placed 110 mm above the base of the chamber.
5.1.2.2 Test specimen holder
The test specimen holder (see figures 3a and 3b) shall be composed of
a) a support on which two 5 mm thick bars, spaced 150 mm apart, are fixed;
b) two 5 mm thick holding (removable) bars held on the two fixed bars with clips.
The support and all the bars shall be made of metal.
The size of all bars shall be such that the test specimen is well supported.
5.1.2.3 Accessories
Accessories include
a) a standard ignition linen specimen: whitened, not dressed, composed of 67 % polyester,
33 % cotton – 110 g/m ;
b) a clamp;
c) clips;
d) a weighing scale (0,001 g precision);
e) a pattern for test specimen cutting;
f) tracing paper;
g) a mirror of approximately 250 mm × 300 mm, placed in a corner of the chamber, used to
observe the burning on the rear of the test specimen.
5.1.3 Test specimens
5.1.3.1 Shape and dimensions
Rectangular test specimens shall have dimensions of 150 mm × 300 mm after being attached
to the specimen holder.
For knitted material (for example, socks and gloves) the manufacturer shall provide flat test
specimens with the above dimensions.

60895  IEC:2002 – 27 –
5.1.3.2 Quantity
The numbers of test specimens required according to the material shall be as follows.
a) Woven material
Tests shall be performed on three test specimens which are cut so that their length is
parallel with the warp direction and three test specimens having their length parallel to the
weft direction.
b) Knitted material
Three test specimens shall be provided for knitted material unless it is not directionally
uniform. In this case, six test specimens shall be provided (three for each direction).
c) Layered material
Three test specimens shall be provided for layered material unless it is not directionally
uniform. In this case, six test specimens shall be provided (three for each direction).
5.1.3.3 Preparation of samples
The outlines of the test specimens shall be marked on the material using the pattern set out in
5.1.3.1. The length of each specimen shall be appropriate to the direction specified in the test.
The test specimens shall be cut in such a way that
– the middle point is on a 45° oblique line vis-à-vis the edges of a roll of fabric,
– the sides are parallel with the exterior edges of a roll of material.
The required number of test specimens shall be cut from the material in an area with no
visible defects. No specimens shall be taken within 50 mm from the selvage or edge of the
material.
5.1.4 Test procedure
For each test specimen, the test procedure shall be as follows.
5.1.4.1 Preparation of standard ignition specimen
Cut a 25 mm × 80 mm strip of polyester cotton (see 5.1.2.3) its length parallel with the warp
direction. This textile strip is folded lengthwise to give 25 mm × 20 mm. The ends of the
specimen are placed inside the fold (see figure 3c).
5.1.4.2 Clamping standard ignition specimen
The standard ignition specimen shall be clamped in the centre of the lower part of the test
specimen. The clamp shall be fixed horizontally, so that
– the standard ignition specimen has two thicknesses on each side of the test specimen,
– the end of the standard ignition specimen is 10 mm lower than the lower part of the test
specimen.
5.1.4.3 Test
The test specimen is fixed on the specimen holder, so that the lower part of the test specimen
coincides with the lower part of the specimen holder. The standard ignition specimen shall be
equidistant from the vertical rods.

60895  IEC:2002 – 29 –
The specimen holder is hung vertically in the test chamber.
Apply a flame to the lower part of the standard ignition specimen until it is ignited (about 2 s)
and immediately close the door of the test chamber.
The standard ignition specimen shall burn normally for about 25 s to 30 s.
Observe the burning test specimen during the test and note the following:
– points of residual after-glow;
–melting;
– distortion of test specimen;
–smoke.
5.1.4.4 Measurement of burned area
At the end of the test, and after 15 min in atmospheric conditions conforming to code 18 °C to
28 °C/45 % to 75 % of IEC 60212,
– using scissors, remove the completely burned or melted areas,
– lay the damaged test specimen flat on the pattern so that remaining contours coincide with
the pattern ones,
– measure the burned area of the test specimen by cutting up and scaling the tracing paper,
by planimetry, or by measurement of a geometric area.
5.1.5 Results
The test is considered to be successful if the following conditions are met by each of the
specimens:
– the burned area of the test specimen is less than, or equal to, 100 cm ;
– the burned area does not extend to the vertical parts of the specimen holder, nor to the
upper edge of the test specimen.
5.2 Electrical resistance test
Standard procedures to determine electrical resistance of material in connection with its
antistatic properties are unreliable when the electrical resistance of highly conductive material
has to be determined. Indeed, these standard procedures do not take into account the
interference of the transition resistance from electrode to test specimen, which is of primary
importance when low-resistance test specimens have to be measured.
5.2.1 Test equipment
The following apparatus is needed for the test:
– one alternating current source of power frequency (50 Hz or 60 Hz), or one direct current
source, allowing an adjustable and regulated load current of up to 2 A at 30 V;
– one ammeter;
– two contact electrodes, providing a contact surface of 20 mm × 20 mm on both faces of
the test specimen. Contact pressure shall be more than 100 kPa (see figure 4);
– two voltage measuring electrodes, such as sewing pins or needles;
– one voltmeter.
60895  IEC:2002 – 31 –
5.2.2 Preparation of test specimens
Four material test specimens measuring approximately 200 mm × 20 mm are respectively cut
in warp, weft and two perpendicular directions making a 45° angle with warp and weft (see
figure 5). No specimens shall be taken within 50 mm from the selvage, or edge of the
material.
These test specimens shall be tested successively after a 24 h conditioning using the code
24h/23 °C/50 % of IEC 60212.
5.2.3 Procedure
The test specimen is placed unstretched between the contact electrodes (see figure 4).
The voltage measuring electrodes are threaded through the test specimen at a distance of
100 mm apart (see figure 4).
The electrical circuit is completed (see figure 6). A 0,2 A current is established through the
unstretched test specimen.
After 1 min the voltage is measured.
5.2.4 Test results
The voltage measured is proportional to the electrical resistance of the test specimen.
The electrical resistance of a unit square is given by the formula:
width U × l
R = R × =
s measured
length I × L
where
U is the measured voltage, in V;
l is the width of the test specimen, in mm;
I is the test current, in A;
L is the length of the test specimen, in mm.
Numerical application (R in Ω and U in V):
s
U 20
R = ×
s
0,2 100
NOTE The specimen resistance should be utilized by the manufacturer to establish the garment resistance limit
required in 6.2 for the garment.
The arithmetic mean value of the four electrical values shall be lower than 7 Ω per square. No
individual value shall be higher than 10 Ω per square.

60895  IEC:2002 – 33 –
5.3 Current-carrying capability
This is the test to establish the capacity of the material to carry current without excessive
degradation to the material. The test is not to establish a heat comfort level.
5.3.1 Test equipment
The test-set shall be the same as in 5.2.1.
5.3.2 Preparation of test specimens
The preparation shall be the same as in 5.2.2.
5.3.3 Procedure
The procedure shall be as in 5.2.3 except that a 1 A current is established through the test
specimen for a duration of 15 min. This current and its time duration are well in excess of
anticipated working conditions.
5.3.4 Test results
During the test, there shall be no flame, incandescent point, smoke or carbonization between
the contact electrodes.
5.4 Shielding efficiency
Tests carried out in the actual conditions of this standard have shown that shielding efficiency
does not depend on test frequency between 50 Hz and 5 kHz. To facilitate testing, 5 kHz is
chosen. At this frequency, the test is at least as severe as at 50 Hz or 60 Hz.
5.4.1 Test equipment
The test equipment is composed of the following:
a) one 400 V r.m.s. sine wave voltage generator at 5 kHz;
b) one insulating circular plate 300 mm in diameter;
c) one metallic circular plate 300 mm in diameter with connection clip;
d) one insulating circular plate 400 mm in diameter made from an elastomeric (3,5 ± 0,5) mm
thick sheet having a surface hardness between 60° and 65° on the Shore scale;
e) one electrode assembly weighing 3 kg built according to the scheme given in figure 7a
and fitted with a 100 kΩ shunt;
f) one measuring device (multimeter or oscilloscope) with constant input impedance greater
than, or equal to, 1 MΩ, in parallel with a capacitance of 47 pF maximum;
g) one voltmeter allowing measurement of 400 V r.m.s. at 5 kHz.
5.4.2 Test mounting
The following parts are assembled in the specified order upon a grounded horizontal support
(figure 7b):
– circular insulating plate 300 mm in diameter (item b of 5.4.1);
– circular metal plate 300 mm in diameter and 3 mm to 5 mm thick (item c of 5.4.1);

60895  IEC:2002 – 35 –
– circular elastomeric plate 400 mm in diameter and 3 mm to 5 mm thick (item d of 5.4.1);
– test specimen, minimal dimensions 120 mm × 120 mm;
– electrode assembly (not allowed to pass beyond the edge of test specimen). The
thickness of the polyvinyl insulating plate between the electrode and the test specimen
shall be 0,8 mm (figure 7a).
5.4.3 Earth connection
The following parts are connected together and earthed:
– frame connection of voltage generator;
– earth connection of electrode assembly;
– frame connection of voltmeter.
5.4.4 Line connection
The following parts are connected together and insulated from earth:
– line connection of voltage generator;
– connection clip of metallic plate 300 mm in diameter;
– line connection of voltmeter.
5.4.5 Test procedure
5.4.5.1 Determination of reference voltage
Without the material specimen, a voltage of 400 V r.m.s. at 5 kHz is applied between the line
and earth connections. The voltage is read on the measuring device and noted as U .
ref
5.4.5.2 Measuring with test specimen
The test specimen is installed (5.4.2) and the test procedure is carried out in the same way as
described in 5.4.5.1. The measured voltage U is recorded.
5.4.5.3 Acceptance criteria
Shielding efficiency is given by the formula
U 
ref
SE = 20 log
 
dB 10
U
 
The shielding efficiency shall be greater than 40 dB.
5.5 Resistance to cleaning
To ensure that the efficiency and flame-retardant properties of the clothing do not deteriorate
excessively after repeated cleaning, both of the following procedures (laundering and dry-
cleaning) shall be carried out. If the garment can be cleaned by one of the two methods, but
not by the other, the manufacturer shall mark the garment accordingly, and only the
appropriate method need be used.
5.5.1 Laundering
Material sufficient to conduct flame-resistance testing and shielding efficiency, plus ballast
required to make a full load shall be washed in accordance with ISO 6330.

60895  IEC:2002 – 37 –
5.5.1.1 Test apparatus
The apparatus and reagents shall have the following specifications.
a) Automatic washing machine capable of being operated under the following conditions:
– either a top-loading, agitator type with a “normal” agitator speed of (70 ± 5) r/min, or a
front-loading machine with a speed of 52 r/min, revolving alternatively in each direction
for 12 s, with 3 s rest in between,
– washing time adjustment controllable between 0 min and 15 min, with a tolerance
of ±1 min,
– spin speed: normal (515 ± 5) r/min.
b) Drier of the rotary tumble type having a cylindrical basket approximately 750 mm in diameter
and not less than 400 mm in depth, rotating at approximately (50 ± 5) r/min, equipped with
means for maintaining a drying temperature of 50 °C to 70 °C measured in the exhaust
vent as close as possible to the drying cylinder, and providing a cooling period of 5 min
when tumbling at the end of the drying cycle.
c) Commercial detergent not containing bleach. The standard detergent specified in
table E.1 of IEC 60456 for a detergent without perborate (type II), can be used in cases of
dispute.
d) Dummy load: pieces of undyed spun polypropylene fabric, having a mass of approximately
0,16 kg/m .
5.5.1.2 Test procedure
Place the test specimens in the washing machine and add sufficient dummy load to make a
total dry load of 2 kg. Fill the machine to operate with (40 ± 4) l of water and set the machine
to operate at the normal setting (50 °C to 70 °C). If the mass of the test specimen(s) exceeds
2 kg, the amount of water shall be increased proportionately.
Add sufficient household use detergent to provide good running suds and set the machine to
wash for 10 min. (If necessary, advance the operation of the machine manually to begin the
rinse cycle after 10 min of washing.) Continue until the end of the final spin cycle.
On completion of the final spin cycle, remove the specimens from the machine and place
them and the dummy load (if any) in the tumble drier with the temperature of the exhaust from
the drum set at 65 °C to 70 °C (for normal material). Operate the drier until the load is dry and
continue tumbling, with the heat turned off, for 5 min. Remove the test specimens
immediately. One wash-dry cycle will then have been completed.
5.5.2 Dry-cleaning
Material sufficient to conduct flame-resistance testing and shielding efficiency, plus ballast
required to make a full load shall be dry-cleaned in accordance with ISO 3175.
5.5.2.1 Test apparatus
The apparatus and reagents shall have the following specifications.
The apparatus shall consist of a cylinder, preferably of metal approximately 330 mm high and
220 mm in diameter (capacity approximately 11 l). The cylinder shall be mounted on an axis
inclined at an angle of 50° to the axis o
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