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BS EN 61241-14:2004

Superseded

Superseded

A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.

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Electrical apparatus for use in the presence of combustible dust Selection and installation

Available format(s)

Hardcopy , PDF

Superseded date

30-04-2012

Language(s)

English

Published date

26-11-2004

INTRODUCTION
1 Scope
2 Normative references
3 Terms and definitions
4 General requirements for all types of protection
   4.1 Access for inspection
   4.2 Associated equipment located in non-hazardous areas
   4.3 Segregation
   4.4 Electrical rating
   4.5 Protection from mechanical damage and environmental injury
   4.6 Documentation
   4.7 Qualifications of personnel
   4.8 Additional considerations
   4.9 Prevention of explosion
5 Area classification
6 Selection of electrical apparatus
   6.1 Permitted apparatus
   6.2 Selection according to dust characteristics and zones
   6.3 Selection according to temperature
   6.4 Selection of apparatus
7 Protection from dangerous (incendive) sparking
   7.1 Danger from live parts
   7.2 Danger from exposed and extraneous conductive parts
   7.3 Potential equalization
   7.4 Static electricity
   7.5 Electromagnetic radiation
   7.6 Lightning protection
   7.7 Cathodically protected metallic parts
8 Electrical protection
   8.1 General
   8.2 Location of protection and control equipment
   8.3 Resetting of short-circuit and earth-fault protection
        devices
   8.4 Protection of rotating electrical machinery
   8.5 Loss of supply phase
   8.6 Transformer protection
9 Emergency switch-off and electrical isolation
   9.1 Emergency switch-off
   9.2 Electrical isolation
10 Wiring systems
   10.1 General
   10.2 Entries for cable and conduit
   10.3 Accessories
   10.4 Course of wiring
   10.5 Barriers
   10.6 Flexible connection
   10.7 Cable entries
   10.8 Unauthorized methods
   10.9 Telecommunications circuits
   10.10 Unused openings
11 Plugs and socket outlets
   11.1 General
   11.2 Mounting
   11.3 Location
12 Additional requirements for type of protection "Ex tD"
   12.1 Practices A and B
   12.2 Practice A
   12.3 Practice B
   12.4 Motors supplied at varying frequency and voltages
13 Additional requirements for type of protection "pD"
   13.1 Sources of protective gas
   13.2 Automatic switch-off
   13.3 Alarm
   13.4 Common source of protective gas
   13.5 Switching on electrical supply
   13.6 Motors supplied at varying frequency and voltages
14 Additional requirements for type of protection "iD"
15 Additional requirements for type of protection "mD"
16 Inspection of installation
   16.1 General
   16.2 Testing
Annex A (informative) Examples of dust layers of excessive
        thickness
Annex B (normative) Frictional sparking risks with light metals
        and their alloys
Annex ZA (normative) Normative references to international
         publications with their corresponding European
         publications
Bibliography

Describes general requirements, additional to those required for basic electrical safety, for the selection of electrical apparatus and instruments and associated equipment, and for the installation of electrical apparatus to ensure safe use in areas where combustible dust may be present in quantities which could lead to a fire or explosion hazard.

Committee
EXL/31
DevelopmentNote
Supersedes 02/205211 DC. (12/2004) Together with BS EN 61241-17, it supersedes BS EN 50281-1-2. (08/2005) Together with BS EN 61241-0, BS EN 61241-1 and BS EN 61241-17, it supersedes BS 6467-1(1985) and BS 6467-2(1988). (01/2007)
DocumentType
Standard
Pages
44
PublisherName
British Standards Institution
Status
Superseded
SupersededBy
Supersedes

Specifies general requirements, additional to those required for basic electrical safety, for the selection of electrical apparatus and instruments and associated equipment, and for the installation of electrical apparatus to ensure safe use in areas where combustible dust may be present in quantities which could lead to a fire or explosion hazard. The application of electrical apparatus in atmospheres which may contain explosive gas as well as combustible dust, whether simultaneously or separately, requires additional protective measures.

Standards Relationship
NF EN 61241-14 : 2004 Identical
DIN EN 61241-14 : 2005 Identical
I.S. EN 61241-14:2004 Identical
UNE-EN 61241-14:2006 Identical
IEC 61241-14:2004 Identical
NBN EN 61241-14 : 2005 Identical
EN 61241-14:2004 Identical

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IEC 61024-1-1:1993 Protection of structures against lightning - Part 1: General principles - Section 1: Guide A: Selection of protection levels for lightning protection systems
IEC 61024-1:1990 Protection of structures against lightning - Part 1: General principles
IEC 60364-4-41:2005+AMD1:2017 CSV Low voltage electrical installations - Part 4-41: Protection for safety - Protection against electric shock
EN 61558-1:2005/A1:2009 SAFETY OF POWER TRANSFORMERS, POWER SUPPLIES, REACTORS AND SIMILAR PRODUCTS - PART 1: GENERAL REQUIREMENTS AND TESTS
ISO 4225:1994 Air quality General aspects Vocabulary
IEC 61241-0:2004 Electrical apparatus for use in the presence of combustible dust - Part 0: General requirements
IEC 61241-11:2005 Electrical apparatus for use in the presence of combustible dust - Part 11: Protection by intrinsic safety 'iD'
IEC 60050-426:2008 International Electrotechnical Vocabulary (IEV) - Part 426: Equipment for explosive atmospheres
IEC 61241-17:2005 Electrical apparatus for use in the presence of combustible dust - Part 17: Inspection and maintenance of electrical installations in hazardous areas (other than mines)
IEC 61558-1:2017 Safety of transformers, reactors, power supply units and combinations thereof - Part 1: General requirements and tests
EN 61241-1:2004/corrigendum Dec. 2006 ELECTRICAL APPARATUS FOR USE IN THE PRESENCE OF COMBUSTIBLE DUST - PART 1: PROTECTION BY ENCLOSURES "TD"
IEC 61241-1:2004 Electrical apparatus for use in the presence of combustible dust - Part 1: Protection by enclosures "tD"
IEC 60529:1989+AMD1:1999+AMD2:2013 CSV Degrees of protection provided by enclosures (IP Code)
IEC 61241-18:2004 Electrical apparatus for use in the presence of combustible dust - Part 18: Protection by encapsulation 'mD'
IEC 60079-0:2011 Explosive atmospheres - Part 0: Equipment - General requirements
EN 60529:1991/AC:2016-12 DEGREES OF PROTECTION PROVIDED BY ENCLOSURES (IP CODE) (IEC 60529 EDITION 2.2 CORRIGENDUM 2:2015)
EN 61241-10:2004 Electrical apparatus for use in the presence of combustible dust - Part 10: Classification of areas where combustible dusts are or may be present
IEC 61241-10:2004 Electrical apparatus for use in the presence of combustible dust - Part 10: Classification of areas where combustible dusts are or may be present

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