IEC 61241-0:2004
Superseded
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.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
Hardcopy , PDF , PDF 3 Users , PDF 5 Users , PDF 9 Users
16-11-2012
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)
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DocumentType |
Standard
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Pages |
99
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PublisherName |
International Electrotechnical Committee
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Status |
Superseded
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SupersededBy | |
Supersedes |
Standards | Relationship |
UNE-EN 61241-0:2007 | Identical |
BIS IS/IEC 61241-0 : 2004 | Identical |
VDE 0170-15-0 : 2007 | Identical |
EN 61241-0:2006 | Identical |
PN EN 61241-0 : 2007 | Identical |
AS/NZS 61241.0:2005 | Identical |
GOST IEC 61241-0 : 2011 | Identical |
NF EN 61241-0 : 2007 | Identical |
I.S. EN 61241-0:2006 | Identical |
DIN EN 61241-0 : 2007 | Identical |
NEN IEC 61241-0 : 2006 | Identical |
CEI EN 61241-0 : 2008 | Identical |
GOST R IEC 61241-0 : 2007 | Identical |
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 |
IEC 60243-1:2013 | Electric strength of insulating materials - Test methods - Part 1: Tests at power frequencies |
IEC 60662:2011 | High-pressure sodium vapour lamps - Performance specifications |
IEC 60192:2001 | Low-pressure sodium vapour lamps - Performance specifications |
IEC 60259:1968 | Miscellaneous lamps and ballasts |
ISO 4225:1994 | Air quality General aspects Vocabulary |
IEC 60050-486:1991 | International Electrotechnical Vocabulary (IEV) - Part 486: Secondary cells and batteries |
ISO 4017:2014 | Fasteners Hexagon head screws Product grades A and B |
IEC 60216-2:2005 | Electrical insulating materials - Thermal endurance properties - Part 2: Determination of thermal endurance properties of electrical insulating materials - Choice of test criteria |
ISO 4032:2012 | Hexagon regular nuts (style 1) — Product grades A and B |
IEC 60050-426:2008 | International Electrotechnical Vocabulary (IEV) - Part 426: Equipment for explosive atmospheres |
ISO 4762:2004 | Hexagon socket head cap screws |
ISO 262:1998 | ISO general purpose metric screw threads — Selected sizes for screws, bolts and nuts |
IEC 60079-11:2011 | Explosive atmospheres - Part 11: Equipment protection by intrinsic safety "i" |
ISO 4027:2003 | Hexagon socket set screws with cone point |
IEC 61241-1:2004 | Electrical apparatus for use in the presence of combustible dust - Part 1: Protection by enclosures "tD" |
ISO 4029:2003 | Hexagon socket set screws with cup point |
IEC 60079-0:2011 | Explosive atmospheres - Part 0: Equipment - General requirements |
IEC 60086-1:2015 | Primary batteries - Part 1: General |
ISO 4026:2003 | Hexagon socket set screws with flat point |
ISO 286-2:2010 | Geometrical product specifications (GPS) ISO code system for tolerances on linear sizes Part 2: Tables of standard tolerance classes and limit deviations for holes and shafts |
ISO 273:1979 | Fasteners — Clearance holes for bolts and screws |
IEC 60947-3:2008+AMD1:2012+AMD2:2015 CSV | Low-voltage switchgear and controlgear - Part 3: Switches, disconnectors, switch-disconnectors and fuse-combination units |
IEC 61241-2-1:1994 | Electrical apparatus for use in the presence of combustible dust - Part 2: Test methods - Section 1: Methods for determining the minimum ignition temperatures of dust |
ISO 4028:2003 | Hexagon socket set screws with dog point |
ISO 48:2010 | Rubber, vulcanized or thermoplastic Determination of hardness (hardness between 10 IRHD and 100 IRHD) |
IEC 60623:2017 | Secondary cells and batteries containing alkaline or other non-acid electrolytes - Vented nickel-cadmium prismatic rechargeable single cells |
IEC 61150:1992 | Alkaline secondary cells and batteries - Sealed nickel-cadmium rechargeable monobloc batteries in button cell design |
ISO 178:2010 | Plastics Determination of flexural properties |
IEC 60216-1:2013 | Electrical insulating materials - Thermal endurance properties - Part 1: Ageing procedures and evaluation of test results |
IEC 60285:1993+AMD1:1995+AMD2:1998 CSV | Alkaline secondary cells and batteries - Sealed nickel-cadmium cylindrical rechargeable single cells |
IEC 61241-14:2004 | Electrical apparatus for use in the presence of combustible dust - Part 14: Selection and installation |
ISO 4014:2011 | Hexagon head bolts Product grades A and B |
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