EN 50020:2002

Electrical apparatus for potentially explosive atmospheres - Intrinsic safety 'i'

To be read with EN 50014:1997 * Superseded by EN 60079-11:2007

Elektrische Betriebsmittel für explosionsgefährdete Bereiche - Eigensicherheit 'i'

Matériel électrique pour atmosphères explosibles - Sécurité intrinsèque 'i'

Električne naprave za potencialno eksplozivne atmosfere - Lastna varnost ''i''

General Information

• Status: Withdrawn
• Publication Date: 13-Jun-2002
• Withdrawal Date: 29-Jun-2003
• ICS: 29.260.20 - Electrical apparatus for explosive atmospheres
• Technical Committee: CLC/TC 31 - Electrical apparatus for explosive atmospheres - General requirements
• Drafting Committee: CLC/SC 31-3 - Intrinsically safe apparatus and systems “i”
• Parallel Committee: IEC/SC 31G - IEC_SC_31G
• Current Stage: 9960 - Withdrawal effective - Withdrawal
• Start Date: 01-Oct-2009
• Completion Date: 01-Oct-2009
• Directive: 2008/68/EC - Directve 2008/68/EC of the European Parliament and of the council of 24 September 2008 on the inland transport of the dangerous goods
• Directive: 94/9/EC - Directive 94/9/EC of the European Parliament and the Council of 23 March 1994 on the approximation of the laws of the Member States concerning equipment and protective systems intended for use in potentially explosive atmospheres
• Mandate: BC/CEN/CLC/08-92 - BC/CEN/CLC/08-92
• Ref Project: SIST EN 50020:2003 - Electrical apparatus for potentially explosive atmospheres - Intrinsic safety 'i'

Relations

• Replaces: EN 50020:1994 - Electrical apparatus for potentially explosive atmospheres - Intrinsic safety 'i'
• Effective Date: 29-Jan-2023
• Replaced By: EN 60079-11:2007 - Explosive atmospheres - Part 11: Equipment protection by intrinsic safety "i"
• Effective Date: 29-Jan-2023

Standards Content (Sample)

SLOVENSKI SIST EN 50020:2003

STANDARD
marec 2003
Električne naprave za potencialno eksplozivne atmosfere - Lastna varnost ''i''
Electrical apparatus for potentially explosive atmospheres - Intrinsic safety "i"
ICS 29.260.20 Referenčna številka
SIST EN 50020:2003(en)
©  Standard je založil in izdal Slovenski inštitut za standardizacijo. Razmnoževanje ali kopiranje celote ali delov tega dokumenta ni dovoljeno

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EUROPEAN STANDARD EN 50020
NORME EUROPÉENNE
EUROPÄISCHE NORM June 2002
ICS 29.260.20 Supersedes EN 50020:1994
English version
Electrical apparatus for potentially explosive atmospheres -
Intrinsic safety 'i'
Matériel électrique Elektrische Betriebsmittel
pour atmosphères explosibles - für explosionsgefährdete Bereiche -
Sécurité intrinsèque 'i' Eigensicherheit 'i'
This European Standard was approved by CENELEC on 2002-02-01. CENELEC members are bound to
comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European
Standard the status of a national standard without any alteration.
Up-to-date lists and bibliographical references concerning such national standards may be obtained on
application to the Central Secretariat or to any CENELEC member.
This European Standard exists in three official versions (English, French, German). A version in any other
language made by translation under the responsibility of a CENELEC member into its own language and
notified to the Central Secretariat has the same status as the official versions.
CENELEC members are the national electrotechnical committees of Austria, Belgium, Czech Republic,
Denmark, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Luxembourg, Malta,
Netherlands, Norway, Portugal, Slovakia, 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
© 2002 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members.
Ref. No. EN 50020:2002 E

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EN 50020:2002 - 2 -
Foreword
This European Standard was prepared by SC 31-3, Intrinsically safe apparatus and systems "i", of
Technical Committee CENELEC TC 31, Electrical apparatus for explosive atmospheres.
The text of the draft was submitted to the CENELEC Unique Acceptance Procedure and was approved by
CENELEC as EN 50020 on 2002-02-01.
This European Standard supersedes EN 50020:1994 and its corrigendum February 1998.
The following dates were fixed:
- latest date by which the EN has to be implemented
at national level by publication of an identical
national standard or by endorsement (dop) 2003-02-01
- latest date by which the national standards conflicting
with the EN have to be withdrawn (dow) 2003-06-30
This European Standard is to be read in conjunction with EN 50014:1997, Electrical apparatus for
potentially explosive atmospheres – General requirements, and with the third editions of the European
Standards for the specific types of protection.

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- 3 - EN 50020:200X
Contents
1 Scope.4
2 Normative references.6
3 Definitions.7
4 Grouping and classification of intrinsically safe apparatus
and associated apparatus .10
5 Intrinsically safe levels of protection of electrical apparatus.11
6 Apparatus construction.13
7 Components on which intrinsic safety depends .30
8 Infallible components, infallible assemblies of components
and infallible connections .36
9 Diode safety barriers.42
10 Type verification and type tests.43
11 Routine verifications and tests.52
12 Marking.
...