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IEC 61241-0:2004

Superseded

Superseded

A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.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 - Part 0: General requirements

Available format(s)

Hardcopy , PDF , PDF 3 Users , PDF 5 Users , PDF 9 Users

Superseded date

16-11-2012

Published date

07-07-2004

FOREWORD
INTRODUCTION
1 Scope
2 Normative references
3 Terms and definitions
4 Construction
    4.1 General
    4.2 Principles for design and testing of apparatus
          for use in Zone 20
    4.3 Opening enclosures
    4.4 Environmental conditions
5 Temperatures
    5.1 Maximum surface temperature
    5.2 Maximum surface temperature with respect to dust
          layers above 50 mm
    5.3 Ambient temperature
6 Enclosure materials
    6.1 Non-metallic enclosures and non-metallic parts
          of enclosures
    6.2 Enclosures containing light metals
7 Fasteners
    7.1 Access to live parts
    7.2 Compatible material
8 Interlocking devices
9 Bushings
    9.1 Prevention of turning
    9.2 Torque tests
10 Materials used for cementing
    10.1 Documentation
    10.2 Thermal stability
    10.3 Verification
11 Ex components
    11.1 General
    11.2 Mounting
    11.3 Internal mounting
    11.4 External mounting
12 Connection facilities and terminal compartments
    12.1 Attached cables
    12.2 Terminal access
    12.3 Creepage and clearance
13 Connection facilities for earthing or bonding conductors
    13.1 Internal connection
    13.2 External connection
    13.3 Facility not required
    13.4 Effective connection
    13.5 Effective contact
    13.6 Environmental
    13.7 Use of light metal
14 Cable and conduit entries
    14.1 Intended use
    14.2 Construction
    14.3 Integral part of the apparatus
    14.4 Prevention of twisting
    14.5 Method of attaching
    14.6 Blanking elements
    14.7 Branching point temperatures
15 Radiating equipment
    15.1 Lasers and other continuous wave source
    15.2 Ultrasonic sources
16 Supplementary requirements for specific electrical
    apparatus - Rotating electrical machines
    16.1 Ventilation openings for external fans
    16.2 Construction and mounting of the ventilating systems
    16.3 Clearances for the ventilating system for use
          in Zone 20 or 21
    16.4 Materials for external fans and fanhoods
17 Switchgear
    17.1 Flammable dielectric
    17.2 Interlocking
    17.3 Indication of open position
    17.4 Openings
18 Fuses
19 Plugs and sockets
    19.1 Plugs and sockets construction
    19.2 Bolted plugs and sockets
    19.3 For Zone 21 and Zone 22
    19.4 Plugs remaining energized
20 Luminaries
    20.1 Light transmitting covers
    20.2 Guards
    20.3 Mounting
    20.4 Covers
    20.5 Parts remaining energized
    20.6 Types of lamps
21 Caplights, caplamps and handlamps
    21.1 Leakage
    21.2 Separate enclosures
22 Apparatus incorporating cells and batteries
    22.1 General
    22.2 Connection of cells
    22.3 Characteristics
    22.4 Compatibility
    22.5 Limits
    22.6 Mixture of cells
    22.7 Interchangeability
    22.8 Re-charging
    22.9 Different cells
    22.10 Leakage
    22.11 Method of connection
    22.12 Orientation
    22.13 Identification of replacement
23 Verification and tests
    23.1 General
    23.2 Verification of documents
    23.3 Compliance of prototype or sample with documents
    23.4 Type tests
24 Routine verifications and tests
25 Manufacturer's responsibility
26 Verifications and tests on modified or repaired
    electrical apparatus
27 Clamping tests of cable entries for non-armoured
    and braided cables
    27.1 Cable entries with clamping by the sealing ring
    27.2 Cable entries with clamping by filling compound
    27.3 Cable entries with clamping by means of a clamping
         device
    27.4 Tensile test
    27.5 Mechanical strength
28 Clamping tests of cable entries for armoured cables
    28.1 Clamping tests where the armourings are clamped by
         a device within the gland
    28.2 Clamping tests where the armourings are not clamped
         by a device within the gland
29 Marking
    29.1 General
    29.2 Marking of all electrical apparatus
    29.3 Multiple protection techniques
    29.4 Order of marking
    29.5 Reduced marking
30 Examples of marking
    30.1 Apparatus type of protection "mD" for use in Zone 20
    30.2 Apparatus type of protection "iaD" for use in Zone 20
    30.3 Apparatus type of protection "pD" for use in Zone 21
    30.4 Apparatus type of protection "tD", Practice A (see
         IEC 61241-1); temperature tested under 500 mm dust
         layer, for use in Zone 21
    30.5 Apparatus type of protection "tD", Practice B (see
         IEC 61241-1) for use in Zone 22
    30.6 Apparatus type of protection "tD", Practice A (see
         IEC 61241-1) for use in Zone 22
Bibliography
Figures
Tables

Specifies general requirements for the design, construction, testing and marking of electrical apparatus protected by any recognized safeguard technique for use in areas where combustible dust may be present in quantities that 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.The contents of the corrigendum of November 2005 have been included in this copy.

DevelopmentNote
Together with IEC 61241-1 supersedes IEC 61241-1-1. (07/2004) Stability Date: 2014. (10/2012)
DocumentType
Standard
Pages
99
PublisherName
International Electrotechnical Committee
Status
Superseded
SupersededBy
Supersedes

BS EN 61241-1:2004 Electrical apparatus for use in the presence of combustible dust Protection by enclosures \'tD\'
I.S. EN 61241-14:2004 ELECTRICAL APPARATUS FOR USE IN THE PRESENCE OF COMBUSTIBLE DUST - PART 14: SELECTION AND INSTALLATION
12/30243081 DC : 0 BS EN 1034-17 - SAFETY OF MACHINERY - SAFETY REQUIREMENTS FOR THE DESIGN AND CONSTRUCTION OF PAPER MAKING AND FINISHING MACHINES - PART 17: TISSUE MAKING MACHINES
BS EN 61241-17:2005 Electrical apparatus for use in the presence of combustible dust Inspection and maintenance of electrical installations in hazardous areas (other than mines)
BS EN 50495:2010 Safety devices required for the safe functioning of equipment with respect to explosion risks
BIS IS/IEC 60079-25 : 2010 EXPLOSIVE ATMOSPHERES - PART 25: INTRINSICALLY SAFE ELECTRICAL SYSTEMS
CEI EN 50495 : 2011 SAFETY DEVICES REQUIRED FOR THE SAFE FUNCTIONING OF EQUIPMENT WITH RESPECT TO EXPLOSION RISKS
BS EN 60079-19 : 2011 EXPLOSIVE ATMOSPHERES - PART 19: EQUIPMENT REPAIR, OVERHAUL AND RECLAMATION
I.S. EN 16009:2011 FLAMELESS EXPLOSION VENTING DEVICES
I.S. EN 1034-17:2012 SAFETY OF MACHINERY - SAFETY REQUIREMENTS FOR THE DESIGN AND CONSTRUCTION OF PAPER MAKING AND FINISHING MACHINES - PART 17: TISSUE MAKING MACHINES
CSA C22.2 No. 60079-25 : 2014 EXPLOSIVE ATMOSPHERES - PART 25: INTRINSICALLY SAFE ELECTRICAL SYSTEMS
I.S. EN 61241-11:2007 ELECTRICAL APPARATUS FOR USE IN THE PRESENCE OF COMBUSTIBLE DUST - PART 11: PROTECTION BY INTRINSIC SAFETY "ID"
EN 60079-19:2011/A1:2015 EXPLOSIVE ATMOSPHERES - PART 19: EQUIPMENT REPAIR, OVERHAUL AND RECLAMATION (IEC 60079-19:2010)
UNE-EN 1127-1:2012 Explosive atmospheres - Explosion prevention and protection - Part 1: Basic concepts and methodology
BS EN 61241-18:2004 Electrical apparatus for use in the presence of combustible dust Protection by encapsulation \'mD\'
BS EN 14797:2006 Explosion venting devices
EN 60079-25:2010/AC:2013 EXPLOSIVE ATMOSPHERES - PART 25: INTRINSICALLY SAFE ELECTRICAL SYSTEMS (IEC 60079-25:2010)
EN 1034-17:2012 Safety of machinery - Safety requirements for the design and construction of paper making and finishing machines - Part 17: Tissue making machines
DIN EN 14797:2007-03 Explosion venting devices
EN 61241-14:2004 Electrical apparatus for use in the presence of combustible dust - Part 14: Selection and installation
EN 61241-1:2004/corrigendum Dec. 2006 ELECTRICAL APPARATUS FOR USE IN THE PRESENCE OF COMBUSTIBLE DUST - PART 1: PROTECTION BY ENCLOSURES "TD"
EN 50177:2009/A1:2012 STATIONARY ELECTROSTATIC APPLICATION EQUIPMENT FOR IGNITABLE COATING POWDERS - SAFETY REQUIREMENTS
EN 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)
EN 50495:2010 Safety devices required for the safe functioning of equipment with respect to explosion risks
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
UNE-EN 50495:2010 Safety devices required for the safe functioning of equipment with respect to explosion risks
BS EN 61241-14:2004 Electrical apparatus for use in the presence of combustible dust Selection and installation
NF EN 60079-19 : 2011 AMD 1 2015 EXPLOSIVE ATMOSPHERES - PART 19: EQUIPMENT REPAIR, OVERHAUL AND RECLAMATION
08/30180312 DC : DRAFT MAR 2008 BS EN 50223 - STATIONARY ELECTROSTATIC APPLICATION EQUIPMENT FOR IGNITABLE FLOCK MATERIAL - SAFETY REQUIREMENTS
12/30270980 DC : 0 BS EN 1127-2 - EXPLOSIVE ATMOSPHERES - EXPLOSION PREVENTION AND PROTECTION - PART 2: BASIC CONCEPTS AND METHODOLOGY FOR MINING
BS EN 61241-10:2004 Electrical apparatus for use in the presence of combustible dust Classification of areas where combustible dusts are or may be present
DIN EN 16009:2011-10 Flameless explosion venting devices
UNI EN 16009 : 2011 FLAMELESS EXPLOSION VENTING DEVICES
ISA 61241-10 : 2004 ELECTRICAL APPARATUS FOR USE IN ZONE 20, ZONE 21 AND ZONE 22 HAZARDOUS (CLASSIFIED) LOCATIONS - CLASSIFICATION OF ZONE 20, ZONE 21 AND ZONE 22 HAZARDOUS (CLASSIFIED) LOCATIONS
CEI EN 60079-25 : 2012 EXPLOSIVE ATMOSPHERES - PART 25: INTRINSICALLY SAFE ELECTRICAL SYSTEMS
I.S. 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
I.S. EN 50177:2009 STATIONARY ELECTROSTATIC APPLICATION EQUIPMENT FOR IGNITABLE COATING POWDERS - SAFETY REQUIREMENTS
BS EN 1127-1:2011 Explosive atmospheres. Explosion prevention and protection Basic concepts and methodology
DIN EN 1127-1:2011-10 EXPLOSIVE ATMOSPHERES - EXPLOSION PREVENTION AND PROTECTION - PART 1: BASIC CONCEPTS AND METHODOLOGY
BIS IS/IEC 60079-1 : 2007 EXPLOSIVE ATMOSPHERES - PART 1: EQUIPMENT PROTECTION BY FLAMEPROOF ENCLOSURES 'D'
BS EN 1034-17:2012 Safety of machinery. Safety requirements for the design and construction of paper making and finishing machines Tissue making machines
NF EN 50495 : 2010 SAFETY DEVICES REQUIRED FOR THE SAFE FUNCTIONING OF EQUIPMENT WITH RESPECT TO EXPLOSION RISKS
02/204779 DC : DRAFT JULY 2002 IEC 61241-17 ED.1 - ELECTRICAL APPARATUS FOR USE IN THE PRESENCE OF COMBUSTIBLE DUST - PART 17: INSPECTION AND MAINTENANCE OF ELECTRICAL INSTALLATIONS IN HAZARDOUS AREAS (OTHER THAN MINES)
NF EN 1034-17 : 2012 SAFETY OF MACHINERY - SAFETY REQUIREMENTS FOR THE DESIGN AND CONSTRUCTION OF PAPER MAKING AND FINISHING MACHINES - PART 17: TISSUE MAKING MACHINES
I.S. EN 50495:2010 SAFETY DEVICES REQUIRED FOR THE SAFE FUNCTIONING OF EQUIPMENT WITH RESPECT TO EXPLOSION RISKS
NF EN 60079-25 : 2011 EXPLOSIVE ATMOSPHERES - PART 25: INTRINSICALLY SAFE ELECTRICAL SYSTEMS
BS EN 1127-1:2019 Explosive atmospheres. Explosion prevention and protection Basic concepts and methodology
ISA 12.10.05 : 2004 ELECTRICAL APPARATUS FOR USE IN ZONE 20, ZONE 21 AND ZONE 22 HAZARDOUS (CLASSIFIED) LOCATIONS - CLASSIFICATION OF ZONE 20, ZONE 21 AND ZONE 22 HAZARDOUS (CLASSIFIED) LOCATIONS
I.S. EN 1127-1:2011 EXPLOSIVE ATMOSPHERES - EXPLOSION PREVENTION AND PROTECTION - PART 1: BASIC CONCEPTS AND METHODOLOGY
EEMUA 186 : 2016 A PRACTITIONER'S HANDBOOK FOR POTENTIALLY EXPLOSIVE ATMOSPHERES
IEC 61241-14:2004 Electrical apparatus for use in the presence of combustible dust - Part 14: Selection and installation
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)
CSA C22.4 PACKAGE : 2009 CONSISTS OF C22.4 NO. 1-09, OBJECTIVE-BASED INDUSTRIAL ELECTRICAL CODE AND C22.4 NO. 2-09, OBJECTIVE-BASED INDUSTRIAL ELECTRICAL CODE - SAFETY MANAGEMENT SYSTEM REQUIREMENTS
BS EN 61241-11:2006 Electrical apparatus for use in the presence of combustible dust Protection by intrinsic safety \'iD\'
UNI EN 1034-17 : 2012 SAFETY OF MACHINERY - SAFETY REQUIREMENTS FOR THE DESIGN AND CONSTRUCTION OF PAPER MAKING AND FINISHING MACHINES - PART 17: TISSUE MAKING MACHINES
02/205210 DC : DRAFT JULY 2002 IEC 61241-10 ED.1 - ELECTRICAL APPARATUS FOR USE IN THE PRESENCE OF COMBUSTIBLE DUST - PART 10: CLASSIFICATION OF AREAS WHERE COMBUSTIBLE DUSTS ARE OR MAY BE PRESENT
09/30208493 DC : 0 BS EN 16009 - FLAMELESS EXPLOSION VENTING DEVICES (TYPE C STANDARD)
DIN EN 1034-17:2012-11 Safety of machinery - Safety requirements for the design and construction of paper making and finishing machines - Part 17: Tissue making machines
UNE-EN 60079-25:2017 Explosive atmospheres -- Part 25: Intrinsically safe electrical systems
UNI EN 1127-1 : 2011 EXPLOSIVE ATMOSPHERES - EXPLOSION PREVENTION AND PROTECTION - PART 1: BASIC CONCEPTS AND METHODOLOGY
BS EN 50177 : 2009 STATIONARY ELECTROSTATIC APPLICATION EQUIPMENT FOR IGNITABLE COATING POWDERS - SAFETY REQUIREMENTS
I.S. EN 61241-1:2004 ELECTRICAL APPARATUS FOR USE IN THE PRESENCE OF COMBUSTIBLE DUST - PART 1: PROTECTION BY ENCLOSURES "TD"
I.S. EN 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 61241-1:2004 Electrical apparatus for use in the presence of combustible dust - Part 1: Protection by enclosures "tD"
IEC 60079-25:2010 Explosive atmospheres - Part 25: Intrinsically safe electrical systems
IEC 61241-11:2005 Electrical apparatus for use in the presence of combustible dust - Part 11: Protection by intrinsic safety 'iD'
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
IEC 61241-18:2004 Electrical apparatus for use in the presence of combustible dust - Part 18: Protection by encapsulation 'mD'
IEC 60079-19:2010+AMD1:2015 CSV Explosive atmospheres - Part 19: Equipment repair, overhaul and reclamation
EN 61241-18:2004 Electrical apparatus for use in the presence of combustible dust - Part 18: Protection by encapsulation "mD"
EN 14797:2006 Explosion venting devices
EN 16009:2011 Flameless explosion venting devices
I.S. EN 60079-25:2010 EXPLOSIVE ATMOSPHERES - PART 25: INTRINSICALLY SAFE ELECTRICAL SYSTEMS (IEC 60079-25:2010 (EQV))
UNE-EN 50177:2010 Stationary electrostatic application equipment for ignitable coating powders - Safety requirements
02/205211 DC : DRAFT JULY 2002 IEC 61241-14 ED.1 - ELECTRICAL APPARATUS FOR USE IN THE PRESENCE OF COMBUSTIBLE DUST - PART 14: SELECTION AND INSTALLATION
BS EN 60079-25:2010 Explosive atmospheres Intrinsically safe electrical systems
CSA C22.4 No. 1 : 2009(R2018) OBJECTIVE-BASED INDUSTRIAL ELECTRICAL CODE
BS EN 16009:2011 Flameless explosion venting devices
11/30247086 DC : 0 BS EN 60079-1 ED. 7.0 - EXPLOSIVE ATMOSPHERES - PART 1: EQUIPMENT PROTECTION BY FLAMEPROOF ENCLOSURES "D"
PREN 1127-2 : DRAFT 2012 EXPLOSIVE ATMOSPHERES - EXPLOSION PREVENTION AND PROTECTION - PART 2: BASIC CONCEPTS AND METHODOLOGY FOR MINING
UNE-EN 60079-19:2011 Explosive atmospheres - Part 19: Equipment repair, overhaul and reclamation
12/30269297 DC : 0 BS EN 60079-14/ED 5 - EXPLOSIVE ATMOSPHERES - PART 14: ELECTRICAL INSTALLATIONS DESIGN, SELECTION AND ERECTION
13/30286778 DC : 0 BS EN 60079-1 - EXPLOSIVE ATMOSPHERES - PART 1: EQUIPMENT PROTECTION BY FLAMEPROOF ENCLOSURES 'D'
EN 61241-11:2006 Electrical apparatus for use in the presence of combustible dust - Part 11: Protection by intrinsic safety "iD"
EN 1127-1:2011 Explosive atmospheres - Explosion prevention and protection - Part 1: Basic concepts and methodology

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