ENV 61111:2001
(Main)Matting of insulating material for electrical purposes
Matting of insulating material for electrical purposes
Applies to insulating matting made of elastomer for use as a floor covering for the electrical protection of workers on a.c. and d.c. installations.
Matten aus isolierentem Material für elektrische Anwendungen
Tapis en matériau isolant pour travaux électriques
S'applique aux tapis isolants en élastomère utilisés pour couvrir le sol en vue de la protection électrique des travailleurs dans les installations à courant alternatif et continu.
Matting of insulating material for electrical purposes
General Information
Standards Content (Sample)
SLOVENSKI STANDARD
SIST ENV 61111:2002
01-september-2002
Matting of insulating material for electrical purposes
Matting of insulating material for electrical purposes
Matten aus isolierentem Material für elektrische Anwendungen
Tapis en matériau isolant pour travaux électriques
Ta slovenski standard je istoveten z: ENV 61111:2001
ICS:
13.260 9DUVWYRSUHGHOHNWULþQLP Protection against electric
XGDURP'HORSRGQDSHWRVWMR shock. Live working
SIST ENV 61111:2002 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
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SIST ENV 61111:2002
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SIST ENV 61111:2002
EUROPEAN PRESTANDARD ENV 61111
PRÉNORME EUROPÉENNE
EUROPÄISCHE VORNORM July 2001
ICS 13.260
English version
Matting of insulating material for electrical purposes
(IEC 61111:1992 + corrigendum 2000, modified)
Tapis en matériau pour travaux Matten aus Isolierendem Material für
électriques elektrische Anwendungen
(CEI 61111:1992 + corrigendum 2000, (IEC 61111:1992 + Corrigendum 2000,
modifiée) modifiziert)
This European prestandard was approved by CENELEC on 2001-03-24 as a prospective standard for
provisional application. The period of validity of this ENV is limited initially to three years. After two years
the members of CENELEC will be requested to submit their comments, particularly on the question
whether the ENV can be converted into a European Standard (EN).
CENELEC members are required to announce the existence of this ENV in the same way as for an EN
and to make the ENV available promptly at national level in an appropriate form. It is permissible to keep
conflicting national standards in force (in parallel to the ENV) until the final decision about the possible
conversion of the ENV into an EN is reached.
CENELEC members are the national electrotechnical committees of Austria, Belgium, Czech Republic,
Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway,
Portugal, Spain, Sweden, Switzerland and United Kingdom.
CENELEC
European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung
Central Secretariat: rue de Stassart 35, B - 1050 Brussels
© 2001 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members.
Ref. No. ENV 61111:2001 E
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SIST ENV 61111:2002
ENV 61111:2001 - 2 -
Foreword
The text of the International Standard IEC 61111:1992 + corrigendum May 2000, prepared by
IEC TC 78, Tools for live working, together with the common modifications prepared by the
Technical Committee CENELEC TC 78, Equipment and tools for live working, was submitted to
the CENELEC questionnaire and vote procedure and was approved by CENELEC as
ENV 61111 on 2001-03-24.
The following date was fixed:
- latest date by which the existence of the ENV
has to be announced at national level (doa) 2001-07-01
Annexes designated "normative" are part of the body of the prestandard.
Annexes designated "informative" are given only for information.
In this prestandard, annexes A, B, C, D and ZA are normative and annexes E, F, and G are
informative.
Annex ZA has been added by CENELEC.
_____________
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Endorsement notice
The text of the International Standard IEC 61111:1992 + corrigendum May 2000 was approved
by CENELEC as a European Prestandard with agreed common modifications as given below.
COMMON MODIFICATIONS
Contents
Add "and tolerances" to the title of 6.2.
Add "(normative)" after annex A, annex B, annex C and annex D.
Add "(informative)" after annex E, annex F and annex G.
Add a new annex ZA
Annex ZA (normative) - Normative references to international publications with their
corresponding European publications
1 Scope
Add a second paragraph:
Insulating mattings have increased mechanical characteristics with respect to
insulating blankets covered by IEC 61112. In particular, the puncture resistance of
mattings is equal to that of category M blankets.
2 Normative references
Replace by:
NOTE Normative references to International publications are listed in annex ZA (normative)
3 Definitions
3.6 Replace by:
3.6
proof test
a test during which a specified voltage is applied to a device for the time defined
under specified conditions to assure that the electrical strength of the insulation is
above the specified value
3.7 Replace by:
3.7
withstand test
a test during which the device must withstand without flashover, disruptive discharge,
puncture or other electric failure a voltage applied under specified conditions
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SIST ENV 61111:2002
ENV 61111:2001 - 4 -
3.11 Replace "nominal voltage" by "nominal voltage of a system" and replace "to identify"
by "to designate or identify".
Add:
3.12
usable area
the matting area that protects the worker against electric shock and that is verified by
the proof test
5 Classification
Replace the second paragraph by:
Guidance for the selection of class is given in annex E.
6 Physical requirements
Replace 6.2, 6.3, including Table 2, and 6.4 by:
6.2 Dimensions and tolerances
Recommended dimensions for matting are indicated in Table 1.
Table 1 - Recommended dimensions for matting
Specific shape Rolls of sheets
length Width Width
mm mm mm
1 000 600 610
1 000 1 000 760
1 000 2 000 915
1 220
Permissible variations in width shall be ± 15 mm for 600 mm, 610 mm and 760 mm
widths and ± 25 mm for 915 mm, 1 000 mm, 1 220 mm and 2 000 mm widths.
For matting with dimensions different from those recommended in Table 1, tolerances
of ± 2 % are required.
6.3 Thickness
6.3.1 The maximum thickness of matting shall be limited in order to obtain appropriate
flexibility and in order to pass the test defined in 7.6.2 (low temperature test).
6.3.2 The minimum thickness shall be determined only by the ability to pass the tests
defined in clauses 7 and 8.
6.4 Workmanship and finish
Matting shall be free on both surfaces from harmful physical irregularities that can be
detected by the tests carried out according to this Prestandard. Harmful and non-
harmful physical irregularities are described in annex G (In-service recommendations).
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6.5 Replace 6.5.1 by:
6.5.1Each matting which is claimed to comply with the requirements of this
Prestandard shall be marked at least on one surface with the following:
a) symbol (double triangle) (see annex A);
b) name, trademark, or identification of the manufacturer;
c) category, if applicable;
d) size (length and width);
e) class designation;
f) month and year of manufacture;
g) usable area (see Figure 1), except for class 0. (On rolls the usable area shall be
marked along the two sides only).
In addition each matting shall have a group of rectangles or other suitable means to
identify when the matting was put into service and the dates of periodic inspection and
testing.
The usable area shall be visibly and permanently identified, for example by a line
around the usable area which has a minimum thickness of 3 mm.
In the case of rolls, they shall bear on one border at least every metre all the above
markings, except d).
6.5.2 Delete the second paragraph.
6.5.4 Add "and of the limit of usable area" after "(double triangle)".
6.6 Add after the first paragraph:
Instructions for use shall be included in the package.
7 Tests on matting
7.1 Replace the third paragraph by:
In order to carry out the type tests, it is necessary to have 13 mats. For mattings in
rolls, the unit is a square of dimensions equal to the width.
Replace from the fifth paragraph to the end of the subclause by:
The test location conditions shall be in accordance with IEC 60160, clause 4
(temperature from 15 °C to 35 °C and relative humidity from 45 % to 75 %).
Unless otherwise specified, matting shall be conditioned for a period of 2 h ± 0,5 h at
a temperature of 23 °C ± 2 °C and relative humidity of 50 % ± 5 % (see IEC 60212,
standard atmosphere B).
Conditioning shall be performed on complete mattings or on test pieces.
Unless otherwise specified, the tolerances for any measured value shall be ± 5 %.
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SIST ENV 61111:2002
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Samples, units and test pieces submitted to non destructive tests can be re-used for
other tests. Samples, units and test pieces submitted to destructive tests shall be
scrapped.
7.2.3 Replace by "Void".
7.2.5 Replace the text by:
Type test and routine test (see 6.5)
The marking shall be verified by visual inspection and durability test for type test
(« visual inspection » means by a person with normal or corrected vision and without
additional magnification). No durability test is required for routine test.
The durability of the marking is checked by rubbing the marking for 15 s with a piece
of lint-free cloth soaked in soapy water and then rubbing it for further a 15 s with a
piece of lint-free cloth soaked in ethyl alcohol. At the end of the test, the marking
must remain legible.
7.3.1 Add after the first paragraph:
The test pieces shall be cut from samples in two perpendicular directions.
7.3.2 Add in the second paragraph "(max. 25 mm)" after "6 mm".
Replace "Figure 1" by "Figure 2" (two times).
7.3.3 Replace "Figure 2" by "Figure 3" (two times).
Add a note at the end of the subclause:
NOTE This test procedure is given for information only, waiting for the results from the CEN/TC 134 ad
hoc Group Slip.
7.4.1 Replace the text by:
Dielectric testing shall be carried out either at a.c. or d.c. voltage. The choice of a.c. or
d.c. shall be made between manufacturer and customer.
NOTE The equivalence of d.c. tests and a.c. tests is under consideration. The values of d.c. test
voltages are under consideration.
For type tests three mats are used. For routine tests one mat is sufficient. For
sampling tests the number is given in annex D (sample size).
The peak (crest) or r.m.s. value of the a.c. voltage shall be measured with an error of
not more than 3 % (see IEC 60060-3).
For type and sampling tests the mats shall be conditioned for moisture absorption by
total immersion in a bath of tap water at room temperature, as specified in 7.1, for a
period of 16 h ± 0,5 h. Insulating compounds used in the finishing process (e.g.
paraffin and talcum powder), should be removed before the test is commenced with
suitable solvents. After the conditioning the matting shall be wiped and immediately
submitted to the dielectric test.
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SIST ENV 61111:2002
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For routine tests such conditioning is not required.
Electrodes shall be of such design so as to apply the electrical stress uniformly over
the test area without producing corona at any point or mechanical strain in the
material.
Table 3 Delete.
7.4.2.1 Replace by:
7.4.2.1 For proof test
The ground electrode is a metal plate having dimensions exceeding at least by 20 mm
on each side the dimensions of the matting under test.
In case of tests on rolls the ground electrode shall be able to contain at least a length
of matting equal to its width.
The live electrode is a conductive plate, having smoothly rounded edges (3 mm
radius) and corners (4,5 mm radius), of a size that covers and maximizes the usable
area.
The matting under test is placed over the ground electrode, while the live electrode is
placed over the usable area. The full usable area shall be tested.
In case of tests on class 0 mattings clearance around the live electrode not exceeding
10 mm is permitted.
7.4.2.2 Replace by "Void".
7.4.2.3 Replace by:
7.4.2.3 For withstand test
The electrode shall consist of two metal cylinders with the sharp edges removed to
give a radius of 3 mm. One electrode shall be 25 mm in diameter and 25 mm high.
The other electrode shall be 75 mm in diameter and 15 mm high. These electrodes
shall be arranged coaxially as in Figure 4.
7.4.4 Replace by "Void".
7.4.5 Replace by:
7.4.5 Electrical test procedures
7.4.5.1 Test equipment
The test equipment shall comply with IEC 60060-1.
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7.4.5.2 Proof test procedure
Type test, routine test and sampling test
Each mat shall be given a voltage test as specified in Table 2 using electrodes as
specified in 7.4.2.1. The a.c. voltage shall be initially applied at a low value and
gradually increased at a constant rate-of-rise of approximately 1 000 V/s until the
specified test voltage level is reached. The test period shall be considered to start at
the instant the specified test voltage is reached.
The test is deemed successful if the specified test voltage is reached and maintained
for 3 min for the type and sampling tests and 1 min for the routine test without the
occurrence of flashover, disruptive discharge, electrical puncture or other electrical
failure.
NOTE At the end of the test period the applied voltage should be reduced at the above mentioned
constant rate to approximately half value before opening the test circuit unless an electrical failure has
already occurred.
7.4.5.3 Withstand test procedure
Type test and sampling test
Five test pieces having dimensions of 150 mm x 150 mm are cut from each matting.
The test pieces are placed between metallic electrodes as specified in 7.4.2.3 and the
whole arrangement is dipped in a liquid insulant (for instance, insulating oil). The test
pieces shall not touch the wall of the tank.
Only one voltage rise is applied to each test piece. The voltage shall be applied to
each test piece at a constant rate-of-rise of approximately 1 000 V/s until the
withstand voltage value given in Table 2 is reached. The voltage is immediately
reduced at the above mentioned constant rate to approximately half value and then
the test circuit is opened. The test is deemed successful if no electrical puncture
occurs.
7.4.6 Replace by "Void".
Replace Table 4 by:
Table 2 - Test voltage
Class of matting AC voltage r.m.s.
(kV)
Proof test Withstand test
0 5 10
1 10 20
2 20 30
3 30 40
4 40 50
7.5 Replace the text starting with a dash by:
- the puncture resistance shall be not less than 80 % of the minimum value obtained for
unaged test pieces.
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7.6.2 Replace in the third paragraph "Figure 4" by "Figure 5".
Replace in the last paragraph "proof voltage test" by "a.c. voltage withstand test
according to 7.4.5.3".
7.7 Replace the second paragraph by:
Four test pieces of 150 mm x 150 mm shall be cut from the matting and shall be
conditioned by immersion in 32° Baumé sulphuric acid solution at a temperature of
23 °C ± 2 °C for 8 h ± 0,5 h. Following acid conditioning, the test pieces shall be
rinsed in water and dried for 2 h ± 0,5 h at approximately 70 °C.
Replace the fourth paragraph by:
Tests shall then be carried out on three test pieces for withstand tests according to
7.4.5.3 but without conditioning for moisture absorption and on one test piece for
mechanical puncture test (see 7.3.2).
7.8 Replace the second paragraph by :
Four test pieces of 150 mm x 150 mm shall be cut from the matting and shall be
preconditioned in air for not less than 3 h ± 0,5 h at 23 °C ± 2 °C, and a relative
humidity 50 % ± 5 %, then they shall be conditioned by immersing in oil N°1 (see
annex C) at a temperature of 70 °C ± 2 °C for 24 h ± 0,5 h.
Replace the fifth paragraph by:
Tests shall then be carried out on three test pieces for withstand tests according to
7.4.5.3 but without conditioning for moisture absorption and on one test piece for
mechanical puncture test (see 7.3.2).
8 Tests on matting with special properties
8.2 Replace in the third paragraph "Figure 4" by "Figure 5".
Replace in the last paragraph “proof voltage test (see 7.4)” by “a.c. voltage withstand
test according to 7.4.5.3”.
9 Quality assurance plan and acceptance test
Replace the text by:
9.1 General
In order to assure the delivery of products that meet this Prestandard, the
manufacturer shall employ an approved quality assurance plan that complies with the
provisions of the ISO 9000 series.
The quality assurance plan shall ascertain that the products meet the requirements
contained in this Prestandard.
In the absence of an accepted quality assurance plan as specified above the
sampling procedure detailed in annex D shall be carried out.
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ENV 61111:2001 - 10 -
9.2 Acceptance tests
The manufacturer shall keep for inspection by the customer, all test results in
accordance with the manufacturer's quality control procedures (see annex F).
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Annex A Replace the annex by:
Annexe A / Annex A
(normative)
Symbole de marquage Marking symbol
double triangle double triangle
NOTES NOTES
1 - Toutes les di
...
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