1982L0130 — EN — 01.01.1995 — 001.001 — 1
This document is meant purely as a documentation tool and the institutions do not assume any liability for its contents
►B COUNCIL DIRECTIVE
of 15February 1982
on the approximation of the laws of the Member States concerning electrical equipment for use in
potentially explosive atmospheres in mines susceptible to firedamp
(82/130/EEC)
(OJ L 59, 2.3.1982, p. 10)
Amended by:
Official Journal
Nopage date
►M1Commission Directive 88/35/EEC of 2 December 1987 L 20 28 26.1.1988
►M2Commission Directive 91/269/EEC of 30 April 1991 L 134 51 29.5.1991
►M3Commission Directive 94/44/EC of 19 September 1994 L 248 22 23.9.1994
Amended by:
►A1Act of Accession of Spain and Portugal L 302 23 15.11.1985
►A2Act of Accession of Austria, Sweden and Finland C 241 21 29.8.1994
(adapted by Council Decision 95/1/EC, Euratom, ECSC) L 1 1 1.1.1995
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COUNCIL DIRECTIVE
of 15February 1982
on the approximation of the laws of the Member States concerning
electrical equipment for use in potentially explosive atmospheres in
mines susceptible to firedamp
(82/130/EEC)
THE COUNCIL OF THE EUROPEAN COMMUNITIES,
Having regard to the Treaty establishing the European Economic
Community, and in particular Article 100 thereof,
Having regard to the proposal from the Commission(1),
Having regard to the opinion of the European Parliament(2),
Having regard to the opinion of the Economic and Social Committee(3),
Whereas legislation in force in the Member States to ensure the safety
of electrical equipment for use in potentially explosive atmospheres inmines susceptible to firedamp differs from one Member State toanother; whereas these differences are such as to constitute a barrier totrade;
Whereas such differences may be eliminated by approximating the laws
of the Member States in order to allow electrical equipment complyingwith harmonized standards for use in potentially explosive atmospheresin mines susceptible to firedamp to be put on the market throughout theCommunity;
Whereas provision should also be made to allow electrical equipment
using technical processes different from those of these harmonizedstandards to be put on the market, provided such equipment ensures alevel of safety equivalent to that of equipment which conforms to theharmonized standards;
Whereas, however, compliance with harmonized standards or equiva-
lence of safety levels to that of equipment which conforms to theharmonized standards should be verified and tested by a body approvedby the Member State concerned;
Whereas a positive result of such verifications and tests should be
confirmed both by a certificate and the mark recognized in all MemberStates;
Whereas, in order to take account of technical progress, the technical
requirements prescribed in the harmonized standards on electricalequipment for use in potentially explosive atmospheres in minessusceptible tofiredamp need tobe adapted pro mptly; whereas, tofacili-tate the implementation of the measures necessary in this connection, aprocedure should be laid down to ensure close cooperation between theMember States and the Commission through the Committee on theadaptation to technical progress of the Directives on the removal oftechnical barriers tointra-Co mmunity trade in electrical equipment inpotentially explosive atmospheres in mines susceptible to firedamp;
Whereas it is possible that electrical equipment for use in potentially
explosive atmospheres in mines susceptible to firedamp, although certi-fied and marked for free movement, may represent a safety risk;whereas a procedure should therefore be laid down to obviate this risk;
Whereas the mining legislation in different Member States applies also
to surface installations of mines susceptible to firedamp; whereas it isnecessary toinclude in this Directive electrical equipment fo r use insuch installations; whereas it is therefore necessary to derogate fromCouncil Directive 76/117/EEC of 18 December 1975 on the approx-
(1) OJ NoC 104, 28. 4. 1980, p. 92.
(2) OJ NoC 197, 4. 8. 1980, p. 66.
(3) OJ NoC 205, 11. 8. 1980, p. 28.
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imation of the laws of the Member States concerning electrical equip-
ment for use in potentially explosive atmospheres(1) and from Council
Directive 79/196/EEC of 6 February 1979 on the approximation of thelaws of the Member States concerning electrical equipment for use inpotentially explosive atmospheres employing certain types of protec-tion (
2),
HAS ADOPTED THIS DIRECTIVE:
Article 1
This Directive shall apply toelectrical equipment fo r use in under-
ground parts of mines susceptible to firedamp which may be endan-gered by firedamp.
This Directive shall also apply, by way of derogation from Directives
76/117/EEC and 79/196/EEC, to electrical equipment for use in thoseparts of surface installations of such mines which may be endangeredby firedamp from underground ventilation.
Article 2
Electrical equipment within the meaning of this Directive covers any
constituent part of an electrical installation or any other electricaldevice.
Article 3
The designation of underground parts of mines susceptible to firedamp
which may be endangered by firedamp and the surface installations ofsuch mines which may be endangered by firedamp from undergroundventilation is left to the initiative of the Member States.
Article 4
1. Member States may not, on safety grounds in respect of the
ignition of firedamp, prohibit the sale, free movement or use for itsproper purpose of the electrical equipment referred to in Articles 1 and2:
— if its conformity with the harmonized standards is attested by a
certificate of conformity issued under the conditions laid down inArticle 8 and by the affixing of the distinctive Community markprovided for in Article 11,
— if it differs from harmonized standards because no provision was
made in such standards for its design and manufacture, but theverifications and tests have established that it offers a degree ofsafety at least equivalent to that of equipment which conforms to theharmonized standards and this is attested by an inspection certificateissued under the conditions laid down in Article 9 and by theaffixing of the distinctive Community mark provided for in Article11.
2. Within the meaning of this Directive, use for its proper purpose
means use of the electrical equipment, as provided for in the harmon-ized standards and recorded on the certificate of conformity or inspec-tion certificate, in places where firedamp is liable to form an explosivemixture with air.
3. Where they are not subject to other Community provisions, instal-
lation conditions and conditions of use shall remain subject to the laws,regulations and administrative provisions of the Member Stateconcerned.
(1) OJ NoL 24, 30. 1.1976, p. 45.
(2) OJ NoL 43, 20. 2. 1979, p. 20.
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4. Within the meaning of this Directive, the European Standards(ENs) listed in Annex A and amended in accordance with Annex B arethe harmonized standards.
Article 5
1. Any amendments to the content of the Annexes which are neces-
sary to take account of technical progress shall be adopted in accord-ance with the procedure set out in Article 7.
2. Likewise, any question relating to the inspection certificates
referred to in the second indent of Article 4 (1) may be examined inaccordance with this procedure.
Article 6
1. The Restricted Committee of the Safety and Health Commission
for the Mining and other Extractive Industries set up by Council Deci-sions of 9 July 1957, 11 March 1965 and 27 June 1974 is herebycharged with the tasks defined in Article 5. Such Committee shall becomposed of representatives of the Member States and chaired by arepresentative of the Commission.
2. The Committee shall establish its own rules of procedure.
Article 7
1. If recourse is had to the procedure defined in this Article, the
matter shall be placed before the Committee by its chairman, either onhis own initiative or at the request of the representative of a MemberState.
2. The chairman shall submit to the Committee a draft of the meas-
ures to be taken. The Committee shall deliver its opinion within aperiod which may be fixed by the chairman according to the urgency ofthe matter. At least ►
A262◄votes shall be required before it can
deliver its opinion, the votes of Member States being weighted asprovided for in Article 148 (2) of the Treaty. The chairman shall notvote.
3. (a) The Commission shall adopt the proposed measures if they are
in accordance with the opinion of the Committee.
(b) If the proposed measures are not in accordance with the opinion
of the Committee, or if no opinion is expressed, the Commissionshall without delay submit a proposal to the Council on themeasures tobe taken. The Co uncil shall act by a qualifiedmajority.
(c) If the Council has not acted within three months of the date on
which the matter was brought before it, the Commission shalladopt the proposed measures.
Article 8
1. The certificate of conformity referred to in the first indent of
Article 4 (1) shall be issued by one of the approved bodies referred to inArticle 14. It shall attest that the type of electrical equipment concernedcomplies with the harmonized standards.
A copy of the certificate of conformity shall be forwarded to the
Member States and to the Commission within one month of the issue ofthe certificate.
The approved body which has verified and tested the electrical equip-
ment shall draw up a report which shall be placed at the disposal of theMember States.
2. The approved body which issues the certificate of conformity may
withdraw such certificate where it finds that it should not have beenissued or where the stipulated conditions have not been met. It may alsowithdraw such certificate where the manufacturer places on the market
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electrical equipment which is not in conformity with the type of equip-
ment for which the certificate was issued.
The approved body shall submit a copy of the withdrawal document to
the Commission and to the Member States, which shall provide for itstransmission to the approved bodies.
The grounds for such withdrawal shall be given in detail. Notice of the
withdrawal shall be published in accordance with paragraph 4.
Such withdrawals, and refusals to issue a certificate of conformity, shall
be notified forthwith to the party concerned, with an indication of theremedies available under the laws in force in the Member States and ofthe time limits for the exercise of such remedies.
3. All documents used for certification of the electrical equipment
must be held by the originating body and shall if necessary be placed atthe disposal of the Commission and the other Member States for thepurpose of any special investigation pertaining to safety; the confiden-tiality of these documents shall be respected.
4. The Commission shall ensure that relevant extracts from these
certificates of conformity are published in the Official Journal of the
European Communities .
Article 9
1. The inspection certificate referred to in the second indent of
Article 4 (1) shall be issued by one of the bodies referred to in Article14. It shall attest that the type of electrical equipment offers a degree ofsafety at least equivalent to that of equipment conforming to theharmonized standards.
2. Before the relevant approved body issues an inspection certificate,
the Member State, on the initiative of that approved body, shall send thedocuments used for certification of the electrical equipment, that is thespecifications of the equipment, the report on the verifications and testscarried out by that body and the draft inspection certificate to theCommission and to the other Member States who shall provide for itstransmission to the bodies which they have approved. Within fourmonths of receiving this information, such Member States may expresstheir disagreement to the Member State concerned or may request thatthe matter be referred to the Committee provided for in Article 6. Acopy of each communication shall be submitted to the Commission. Allcorrespondence shall be confidential.
3. If, within the time limit specified in paragraph 2, noMember State
has expressed disagreement nor requested that the matter be referred tothe Committee, the Member State shall authorize the issue of theinspection certificate.
4. If this is not the case, the Commission shall act on the request for
the inspection certificate after having obtained the opinion of theCommittee.
5. A copy of the inspection certificate shall be sent to the Commis-
sion and to the Member States within one month of the issue of thecertificate; the Member States shall provide for its transmission to thebodies which they have approved. The approved body which has veri-fied and tested the electrical equipment shall draw up a final report.This shall be placed at the disposal of the Member States.
6. The approved body which issues an inspection certificate may
withdraw such certificate where it finds that it should not have beenissued or that the stipulated conditions have not been met. It may alsowithdraw such certificate if the manufacturer places on the marketelectrical equipment which is not in conformity with the type of equip-ment for which the inspection certificate was issued.
The approved body shall send a copy of the withdrawal documents to
the Commission and to all Member States, which shall provide for itstransmission to the bodies which they have approved.
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The grounds for such withdrawal shall be given in detail. Notice of the
withdrawal shall be published in accordance with paragraph 8.
Such withdrawals, and refusals toissue an inspectio n certificate, shall
be notified forthwith to the party concerned, with an indication of theremedies available under the laws in force in the Member States and ofthe time limits for the exercise of such remedies.
7. All documents used for certification of the electrical equipment
must be held by the originating body and shall if necessary be placed atthe disposal of the Commission and the other Member States for thepurpose of any special investigation pertaining to safety; the confiden-tiality of such documents shall be respected.
8. The Commission shall ensure that relevant extracts from these
inspection certificates are published in the OfficialJournaloftheEuro-
pean Communities .
Article 10
Copies of the documents referred to in Article 8 (3) and Article 9 (7)
shall be forwarded to the holder of the certificate at his request; he shallbe free touse them as he wishes.
Article 11
1. The distinctive Community mark affixed to electrical equipment
by the manufacturer shall attest that such equipment conforms to thetype of equipment which has received a certificate of conformity or aninspection certificate, and that it has undergone any routine verificationsand tests either prescribed by the harmonized standards in the case thata certificate of conformity has been issued or referred to in the certifi-cate of inspection itself.
The model of the distinctive Community mark is reproduced in Section
I of Annex C. Such mark shall be affixed in such a way as to be visible,legible and durable.
2. The Member State shall take adequate measures toensure that the
distinctive Community mark is affixed by the manufacturer only if hepossesses the appropriate certificate of conformity or the appropriateinspection certificate. They shall also take all necessary measures toprohibit the affixing on equipment not covered by a certificate ofconformity or by an inspection certificate of marks or inscriptionswhich might be confused with the distinctive Community mark.
3. The certificate of conformity or the inspection certificate may
stipulate that the electrical equipment be accompanied by instructionsexplaining the special conditions for its use.
4. When an inspection certificate in accordance with Article 9 has
been issued for a type of electrical equipment which is not inconformity with the harmonized standards, the distinctive Communitymark must be supplemented by the marking specified in Section II ofAnnex C.
5. The model of the certificate of conformity is contained in Annex
D.
Article 12
Member States shall make all necessary arrangements toensure
adequate surveillance of the manufacture of the electrical equipmentcovered by this Directive.
Article 13
1. If a Member State establishes, on the basis of a close examination,
that electrical equipment, although complying with a type of equipmentfor which a certificate of conformity or an inspection certificate wasissued, represents a safety hazard, it may provisionally prohibit the saleof the equipment in its territory or make it subject to special conditions.
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It shall immediately inform the other Member States and the Commis-sion thereof, stating the grounds for its decision.
2. The Commission shall, within six weeks, consult the Member
States. It shall then deliver its opinion forthwith and take appropriatemeasures.
3. Where the Commission is of the opinion that technical adaptations
to the harmonized standards are necessary, such adaptations shall beadopted under the procedure laid down in Article 7. In that event, theMember State which has adopted safeguard measures may maintainthem until such adaptations enter into force.
Article 14
Each Member State shall forward to the other Member States and the
Commission a list of the bodies approved by it to verify and test theequipment and/or issue the certificates of conformity and the inspectioncertificates, and the addresses for the correspondence referred to inArticles 8 and 9.
The above notification must be completed not later than six months
after notification of this Directive.
Each Member State shall immediately report any change in these lists.
Article 15
Member States shall take the measures necessary toco mply with this
Directive within 18 months of its notification. They shall forthwithinform the Commission thereof.
Member States shall communicate to the Commission the texts of the
provisions of national law which they adopt in the field governed bythis Directive.
Article 16
This Directive is addressed tothe Member States.
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Number Title Edition Date▼M3
ANNEX A
HARMONIZED STANDARDS
The harmonized standards to which equipment must conform, depending on the
type of protection, are the European Standards referred to in the table below.
Certificates issued on the basis of the standards listed in the table below shall be
referred toas ‘generatio n D certificates'.The letter D shall appear at the begin-ning of the serial number of each such certificate.
EUROPEAN STANDARDS
(drawn up by Cenelec, 35 rue de Stassart, B-1050 Brussels)
EN 50014 Electrical apparatus for poten-
tially explosive atmospheres:
General requirements 1 March 1977
Amendment 1 July 1979
Amendment 2 June 1982
Amendment 3 and 4 December 1982
Amendment 5 February 1986
EN 50015 Electrical apparatus for poten-tially explosive atmospheres:
Oil immersion ‘o' 1 March 1977
Amendment 1 July 1979
EN 50016 Electrical apparatus for poten-tially explosive atmospheres:
Pressurized apparatus ‘p' 1 March 1977
Amendment 1 July 1979
EN 50017 Electrical apparatus for poten-tially explosive atmospheres:
Powder filling ‘q' 1 March 1977
Amendment 1 July 1979
EN 50018 Electrical apparatus for poten-tially explosive atmospheres:
Flameproof enclosure ‘d' 1 March 1977
Amendment 1 July 1979
Amendment 2 December 1982
Amendment 3 November 1985
EN 50019 Electrical apparatus for poten-tially explosive atmospheres:
Increased safety ‘e' 1 March 1977
Amendment 1 July 1979
Amendment 2 September 1983
Amendment 3 December 1985
Amendment 4 October 1989
Amendment 5 August 1990
EN 50020 Electrical apparatus for poten-tially explosive atmospheres:
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Number Title Edition Date
Intrinsic safety ‘i' 1 March 1977
Amendment 1 July 1979
Amendment 2 December 1985
Amendment 3 May 1990
Amendment 4 May 1990
Amendment 5 May 1990
EN 50028 Electrical apparatus for poten-
tially explosive atmospheres:
Encapsulation ‘m' 1 February 1987
EN 50033 Electrical apparatus for poten-tially explosive atmospheres:
Caplights 2 March 1991
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ANNEX B
AMENDMENTS AND SUPPLEMENTS MADE TO THE EUROPEAN
STANDARDS LISTED IN ANNEX A
Appendix 1
▼M2
ELECTRICAL APPARATUS FOR POTENTIALLY EXPLOSIVE
ATMOSPHERES OF GROUP I
GENERAL REQUIREMENTS
(European standard EN 50014)
Replace the text of 6.3.1 of amendment 3 (December 1982) to European
Standard EN 50014 by the following text:
6.3.1 Electrical apparatus of Group I
Enclosures of plastic materials with a surface area projected in any direction of
more than 100 cm2, or containing exposed metallic parts with a capacitance to
earth of more than 3 pF, under the most unfavourable conditions in practice,shall be so designed that under normal conditions of use, maintenance andcleaning, danger of ignition due to electrostatic charges is avoided.
This requirement shall be satisfied:
— either by suitable selection of the material: its insulation resistance, measured
according to the method given in 22.4.7.8 of this European standard, shallnot exceed:
—1G Ωat 23 ± 2 °Ca n d5 0±5% relative humidity,
or
— 100 G Ωunder extreme service conditions of temperature and humidity
specified for the electrical apparatus; the ‘c'shall then be placed after thecertificate reference, as indicated in 26.2.9;
— or by the size, shape, layout or by other protective methods. The non-appear-
ance of dangerous electrostatic charges shall then be verified by actual testsfor ignition of an air-methane mixture containing 8,5 ± 0,5 % of methane.
If, however, the danger of ignition cannot be avoided in the design, awarning
label shall indicate the safety measures tobe applied in service.
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Appendix 3
ELECTRICAL APPARATUS FOR POTENTIALLY EXPLOSIVE
ATMOSPHERES OF GROUP I
INTRINSIC SAFETY ‘i'
INTRINSICALLY SAFE ELECTRICAL SYSTEMS
Note:In mines susceptible tofiredamp in the Federal Republic o f Germany, the
word‘Anlage' is used instead of ‘System'.
1.Scope
1.1. This Annex contains the specific requirements for construction and testing
of intrinsically safe electrical systems all or parts of which are intended forinstallation in potentially explosive atmospheres of mines susceptible to fire-damp, in order to ensure that such electrical systems will not cause an explosionin the surrounding atmosphere.
1.2. This Annex supplements European Standard EN 50 020 ‘Intrinsic safety'‘i'
(first edition, March 1977) the requirements of which apply to the constructionand testing of intrinsically safe electrical apparatus and associated electricalapparatus.
1.3. This Annex does not take the place of installation rules for intrinsically safe
electrical apparatus, associated electrical apparatus and intrinsically safe elec-trical systems.
2.Definitions
2.1. The following definitions, specific to intrinsically safe electrical systems,
are applicable in this Annex. They supplement the definitions which are inEuropean Standards EN 50 014 ‘General requirements' and EN 50 020‘Intrinsic safety “i”'.
2.2.Intrinsically safe electrical system
An assembly of items of electrical apparatus defined in a descriptive system
document in which the interconnecting circuits, or parts of such circuits, intendedfor use in a potentially explosive atmosphere, are intrinsically safe circuits, andwhich meet the requirements of this Annex.
2.3.Certified intrinsically safe electrical system
An electrical system conforming to 2.2 for which a testing station has issued a
system certificate, certifying that the type of electrical system complies with thisAnnex.
Note 1:It is not necessary for each electrical apparatus in an intrinsically safe
electrical system tobe certified individually, but it must suitably be identifiable.
Note 2:In so far as the national regulations for installation make it possible,
electrical systems conforming to 2.2, for which the knowledge of the electricalparameters of the items of certified intrinsically safe electrical apparatus, certi-fied associated electrical apparatus, non-certified devices conforming to 1.3 ofEuropean Standard EN 50 014 ‘General requirements'and the knowledge of theelectrical and physical parameters of the components and interconnecting wiringpermits the unambiguous deduction that intrinsic safety is conserved, can beinstalled without additional certificates.
2.4.Accessory
Electrical apparatus which contains only components for connecting and
switching intrinsically safe circuits and which dono t prejudice the intrinsicsafety of the system, such as terminal boxes, junction boxes, plugs and socketsand similar items, switches, etc.
3.Categories of intrinsically safe electrical systems
3.1. Intrinsically safe electrical systems, or parts thereof, shall be placed in one
of two categories: ‘ia' or ‘ib'. The requirements of this Annex apply to bothcategories, unless otherwise specified.
Note:Intrinsically safe electrical systems, or parts thereof, may have categories
different from those of the intrinsically safe electrical apparatus and associatedelectrical apparatus included in the system or part thereof. Also different parts ofan intrinsically safe electrical system may have different categories.
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3.2.Category ‘ia'
Intrinsically safe electrical systems, or parts thereof, are of category ‘ia'if they
comply with the requirements for intrinsically safe electrical apparatus ofcategory ‘ia'(see 4.1 of European Standard EN 50 020 ‘Intrinsic safety')exceptthat the intrinsically safe electrical system as a whole shall be considered as asingle item of electrical apparatus.
3.3.Category ‘ib'
Intrinsically safe electrical systems, or parts thereof, are of category ‘ib'if they
comply with the requirements for electrical apparatus of category ‘ib'(see 4.2 ofEuropean Standard EN 50 020 ‘Intrinsic safety') except that the intrinsicallysafe electrical system as a whole shall be considered as a single item of electricalapparatus.
4.Interconnecting wiring in an intrinsically safe electrical system
4.1. The electrical parameters and all characteristics of the interconnecting
wiring specific toan intrinsically safe electrical system, in sofar as intrinsicsafety depends on them, shall be specified in the certification documents for thatelectrical system.
4.2. Where a multicore cable contains interconnections which are parts of more
than one intrinsically safe circuit the cable shall meet the following requirements:
4.2.1. The radial thickness of the insulation shall be appropriate to the diameter
of the conductor. In the case of polyethylene, the minimum radial thickness shallbe 0.2 mm.
4.2.2. Before leaving the manufacturer’s works, the multicore cable shall be
submitted toAC dielectric tests specified either in 4.2.2.1 o r in 4.2.2.2. Thesuccess of these tests shall be attested by a tests certificate issued by the cablemanufacturer.
4.2.2.1. Either each core, before assembly into the cable, is tested at a voltage
value (rms) equal to3 00 0V+( 2 0 0 0 times the radial thickness of the insula-
tion in mm) V; the assembled cable:
— is firstly tested at a voltage value (rms) equal to 500 V applied between all
the armourings or screens of the cable joined together electrically and thebundle of all cores joined together electrically and
— is secondly tested at a voltage value (rms) equal to 1 000 V applied between
a bundle comprising one half of the cable cores and a bundle comprising theother half of the cores.
4.2.2.2. Or the assembled cable:
— is firstly tested at a voltage value (rms) equal to 1 000 V applied between all
the armourings or screens of the cable joined together electrically and thebundle of all cores joined together electrically and
— is secondly tested at a voltage value (rms) equal to 2 000 V applied in
succession between each core of the cable and the bundle formed by all theother cores joined together electrically.
4.2.3. The tests prescribed in 4.2.2 shall be carried out with an a.c. voltage of
substantially sinusoidal wave form at a frequency between 48 Hz and 62 Hzgiven by a transformer of appropriate power, taking into account the cablecapacity. In the case of dielectric tests on assembled cables, the voltage shall beincreased steadily to the specified value in a period not less than 10 seconds andthen maintained for at least 60 seconds.
These tests are carried out by the cable manufacturer.4.3. No fault between the cores of a multicore cable shall be taken into account
if one of the two following requirements are satisfied:
4.3.1. The cable conforms to 4.2 and each individual intrinsically safe circuit is
enclosed in a conducting screen providing at least 60 % coverage.
Note:The eventual connection of the screen to earth or frame will be specified
in the installation rules.
4.3.2. The cable conforms to 4.2, is effectively protected against damage and
each intrinsically safe circuit within the cable has, in normal operation, a peakvoltage of equal to or less than 60 volts.
4.4. Where a multicore cable conforms with 4.2 but not with 4.3 and contains
only intrinsically safe circuits forming parts of a single intrinsically safe elec-trical system, faults shall be considered between up to 4 cores of the cable inaddition to the application of either 3.2 or 3.3.
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4.5. Where a multicore cable conforms with 4.2 but not with 4.3 and contains
intrinsically safe circuits forming parts of different intrinsically safe electricalsystems, each intrinsically safe circuit contained in the cable shall have a safetyfactor of at least four times that required by either 3.2 or 3.3.
4.6. Where a multicore cable does not comply with 4.2 and 4.3, any number of
faults between the cores of the cable shall be taken into account in addition to theapplication of 3.2 or 3.3.
4.7. The certification documents of the intrinsically safe electrical system shall
specify the conditions of use resulting from the application of 4.3 to 4.6.
5.Accessories used in intrinsically safe electrical systems
The accessories which are listed in the certification documents as parts of an
intrinsically safe electrical system shall meet:
— points 6 and 7 of European Standard EN 50 014 ‘General requirements',— points 5 and 10.3 of European Standard EN 50 020 ‘Intrinsic safety “i”'.
Their marking shall bear at least the manufacturer’s name or its registered trade
mark.
Note:The use of non-certified accessories is subject to the installation require-
ments.
6.Type tests
Intrinsically safe electrical systems shall be type tested in accordance with the
type test requirements of point 9 of European Standard EN 50 020 ‘Intrinsicsafety “i”' but taking into account point 4 of this Annex.
7.Marking of intrinsically safe electrical systems
Certified intrinsically safe electrical systems shall be marked by the holder of the
certificate of that system on at least one of the electrical apparatus set on astrategic position. The marking shall include the minimal marking of 26.5 ofEuropean Standard EN 50 014 ‘General requirements' and the letters ‘SYST'.
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ANNEX C
▼M2
ELECTRICAL APPARTUS FOR POTENTIALLY EXPLOSIVE ATMOS-
PHERES OF GROUP I
I. DISTINCTIVE COMMUNITY MARK
II. MARKING OF ELECTRICAL APPARATUS COVERED BY AN INSPEC-
TION CERTIFICATE
If a type of electrical apparatus which is not in conformity with the harmon-
ized standards has been granted an inspection certificate as provided for inArticle 9, the distinctive Community mark must be supplemented at least bythe following:
1. The symbol ‘S' signifying that it is an electrical apparatus suitable for
gassy mines covered by an inspection certificate. This symbol shallimmediately follow the distinctive Community mark as indicated below.
2. The last two digits of the year of issue of the inspection certificate.3. The serial number of the inspection certificate for that year.4. The name or symbol of the body approved to issue the certificate.5. The name of the manufacturer or his registered trade mark.6. The manufacturer’s type identification.7. The manufacturer’s serial number.
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8. If the testing station considers that it is necessary to indicate special
conditions for safe use, the sign ‘X'shall be placed after the certificatereference.
9. Any marking normally required by the construction standards for the
electrical apparatus.
10. Any supplementary marking considered necessary by the body approved
toissue the certificates.

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ANNEX D

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Annex