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EN 61241-0:2006

Superseded

Superseded

A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.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

Superseded date

01-08-2009

Published date

15-12-2006

FOREWORD
INTRODUCTION
1 Scope
2 Normative references
3 Terms and definitions
4 Construction
   4.1 General
   4.2 Void
   4.3 Opening enclosures
   4.4 Environmental conditions
   4.Z1 Mechanical strength of apparatus
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
   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 Luminaires
   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; temperature
         tested under 500 mm dust layer, for use in Zone 21
   30.5 Apparatus type of protection "tD", Practice B for use in
         Zone 22
   30.6 Apparatus type of protection "tD", Practice A for use in
         Zone 22
Annex ZA (informative) Classification of electrical apparatus into
         categories
Annex ZB (normative) Normative references to international
         publications with their corresponding European publications
Annex ZZ (informative) Coverage of Essential Requirements of EC
         Directives
Bibliography

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.

Committee
CLC/TC 31
DevelopmentNote
Together with EN 61241-1, it supersedes EN 50281-1-1. (01/2007)
DocumentType
Standard
PublisherName
European Committee for Standards - Electrical
Status
Superseded
SupersededBy
Supersedes

12/30270980 DC : 0 BS EN 1127-2 - EXPLOSIVE ATMOSPHERES - EXPLOSION PREVENTION AND PROTECTION - PART 2: BASIC CONCEPTS AND METHODOLOGY FOR MINING
CEI EN 50495 : 2011 SAFETY DEVICES REQUIRED FOR THE SAFE FUNCTIONING OF EQUIPMENT WITH RESPECT TO EXPLOSION RISKS
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
I.S. EN 61241-11:2007 ELECTRICAL APPARATUS FOR USE IN THE PRESENCE OF COMBUSTIBLE DUST - PART 11: PROTECTION BY INTRINSIC SAFETY "ID"
I.S. EN 16009:2011 FLAMELESS EXPLOSION VENTING DEVICES
UNE-EN 1127-1:2012 Explosive atmospheres - Explosion prevention and protection - Part 1: Basic concepts and methodology
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
EN 60079-25:2010/AC:2013 EXPLOSIVE ATMOSPHERES - PART 25: INTRINSICALLY SAFE ELECTRICAL SYSTEMS (IEC 60079-25:2010)
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EN 50495:2010 Safety devices required for the safe functioning of equipment with respect to explosion risks
UNE-EN 50495:2010 Safety devices required for the safe functioning of equipment with respect to explosion risks
I.S. EN 60079-25:2010 EXPLOSIVE ATMOSPHERES - PART 25: INTRINSICALLY SAFE ELECTRICAL SYSTEMS (IEC 60079-25:2010 (EQV))
UNI EN 16009 : 2011 FLAMELESS EXPLOSION VENTING DEVICES
BS EN 50177 : 2009 STATIONARY ELECTROSTATIC APPLICATION EQUIPMENT FOR IGNITABLE COATING POWDERS - SAFETY REQUIREMENTS
CEI EN 60079-25 : 2012 EXPLOSIVE ATMOSPHERES - PART 25: INTRINSICALLY SAFE ELECTRICAL SYSTEMS
I.S. EN 50177:2009 STATIONARY ELECTROSTATIC APPLICATION EQUIPMENT FOR IGNITABLE COATING POWDERS - SAFETY REQUIREMENTS
DIN EN 1127-1:2011-10 EXPLOSIVE ATMOSPHERES - EXPLOSION PREVENTION AND PROTECTION - PART 1: BASIC CONCEPTS AND METHODOLOGY
VDI 2263 Blatt 7:2010-07 Dust fires and dust explosions - Hazards - assessment - protective measures - Dust fires and explosion protection in spraying and drying integrated equipment
VDI 2263 Blatt 8.1:2011-03 Dust fires and dust explosions - Hazards - assessment - protective measures - Fire and explosion protection on elevators - Examples
NF EN 50495 : 2010 SAFETY DEVICES REQUIRED FOR THE SAFE FUNCTIONING OF EQUIPMENT WITH RESPECT TO EXPLOSION RISKS
BS EN 1034-17:2012 Safety of machinery. Safety requirements for the design and construction of paper making and finishing machines Tissue making machines
BS EN 1127-1:2019 Explosive atmospheres. Explosion prevention and protection Basic concepts and methodology
I.S. EN 1127-1:2011 EXPLOSIVE ATMOSPHERES - EXPLOSION PREVENTION AND PROTECTION - PART 1: BASIC CONCEPTS AND METHODOLOGY
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
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
08/30180312 DC : DRAFT MAR 2008 BS EN 50223 - STATIONARY ELECTROSTATIC APPLICATION EQUIPMENT FOR IGNITABLE FLOCK MATERIAL - SAFETY REQUIREMENTS
BS EN 61241-11:2006 Electrical apparatus for use in the presence of combustible dust Protection by intrinsic safety \'iD\'
09/30208493 DC : 0 BS EN 16009 - FLAMELESS EXPLOSION VENTING DEVICES (TYPE C STANDARD)
BS EN 50495:2010 Safety devices required for the safe functioning of equipment with respect to explosion risks
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
EN 16009:2011 Flameless explosion venting devices
UNE-EN 50177:2010 Stationary electrostatic application equipment for ignitable coating powders - Safety requirements
BS EN 60079-25:2010 Explosive atmospheres Intrinsically safe electrical systems
BS EN 16009:2011 Flameless explosion venting devices
I.S. EN 50495:2010 SAFETY DEVICES REQUIRED FOR THE SAFE FUNCTIONING OF EQUIPMENT WITH RESPECT TO EXPLOSION RISKS
PREN 1127-2 : DRAFT 2012 EXPLOSIVE ATMOSPHERES - EXPLOSION PREVENTION AND PROTECTION - PART 2: BASIC CONCEPTS AND METHODOLOGY FOR MINING
DIN EN 16009:2011-10 Flameless explosion venting devices
BS EN 1127-1:2011 Explosive atmospheres. Explosion prevention and protection Basic concepts and methodology
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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EN ISO 4027:2003 Hexagon socket set screws with cone point (ISO 4027:2003)
EN 60192:2001 Low pressure sodium vapour lamps - Performance specifications
EN 20286-2 : 1993 ISO SYSTEM OF LIMITS AND FITS - TABLES OF STANDARD TOLERANCE GRADES AND LIMIT DEVIATIONS FOR HOLES AND SHAFTS
EN 60216-1:2013 Electrical insulating materials - Thermal endurance properties - Part 1: Ageing procedures and evaluation of test results
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IEC 60662:2011 High-pressure sodium vapour lamps - Performance specifications
IEC 60192:2001 Low-pressure sodium vapour lamps - Performance specifications
EN 60623:2017 Secondary cells and batteries containing alkaline or other non-acid electrolytes - Vented nickel-cadmium prismatic rechargeable single cells
EN 60079-0:2012/A11:2013 EXPLOSIVE ATMOSPHERES - PART 0: EQUIPMENT - GENERAL REQUIREMENTS (IEC 60079-0:2011, MODIFIED)
ISO 4225:1994 Air quality General aspects Vocabulary
IEC 60050-486:1991 International Electrotechnical Vocabulary (IEV) - Part 486: Secondary cells and batteries
EN ISO 4026:2003 Hexagon socket set screws with flat point (ISO 4026:2003)
ISO 4017:2014 Fasteners Hexagon head screws Product grades A and B
EN 61241-14:2004 Electrical apparatus for use in the presence of combustible dust - Part 14: Selection and installation
EN ISO 4014:2011 Hexagon head bolts - Product grades A and B (ISO 4014:2011)
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
EN 60285:1994/A2:1999 ALKALINE SECONDARY CELLS AND BATTERIES - SEALED NICKEL-CADMIUM CYLINDRICAL RECHARGEABLE SINGLE CELLS
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
EN 60947-3:2009/A2:2015 LOW-VOLTAGE SWITCHGEAR AND CONTROLGEAR - PART 3: SWITCHES, DISCONNECTORS, SWITCH-DISCONNECTORS AND FUSE-COMBINATION UNITS (IEC 60947-3:2008/A2:2015)
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"
EN ISO 4028 : 2003 Hexagon socket set screws with dog point (ISO 4028:2003)
ISO 4027:2003 Hexagon socket set screws with cone point
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)
EN 60086-1:2015 Primary batteries - Part 1: General
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
EN 60243-1:2013 ELECTRIC STRENGTH OF INSULATING MATERIALS - TEST METHODS - PART 1: TESTS AT POWER FREQUENCIES (IEC 60243-1:2013)
EN ISO 4017:2014 Fasteners - Hexagon head screws - Product grades A and B (ISO 4017:2014)
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
EN ISO 4032:2012 Hexagon regular nuts (style 1) - Product grades A and B (ISO 4032:2012)
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
EN 60662:2012 High-pressure sodium vapour lamps - Performance specifications
EN 60529:1991/AC:2016-12 DEGREES OF PROTECTION PROVIDED BY ENCLOSURES (IP CODE) (IEC 60529 EDITION 2.2 CORRIGENDUM 2:2015)
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
EN 60034-5:2001/A1:2007 ROTATING ELECTRICAL MACHINES - PART 5: DEGREES OF PROTECTION PROVIDED BY THE INTEGRAL DESIGN OF ROTATING ELECTRICAL MACHINES (IP CODE) - CLASSIFICATION
EN ISO 4762:2004 Hexagon socket head cap screws (ISO 4762:2004, Corrected version 2024-08)
EN 61150 : 1993 ALKALINE SECONDARY CELLS AND BATTERIES - SEALED NICKEL CADMIUM RECHARGEABLE MONOBLOC BATTERIES IN BUTTON CELL DESIGN
ISO 4014:2011 Hexagon head bolts Product grades A and B

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