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EN 50021 : 99 COR 2000

Superseded
Superseded

A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.

View Superseded by
superseded

A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.

ELECTRICAL APPARATUS FOR POTENTIALLY EXPLOSIVE ATMOSPHERES - TYPE OF PROTECTION "N"
Superseded date

09-01-2003

Published date

01-12-2013

Foreword
Section One: General
1 Scope
2 Normative references
3 Definitions
4 General requirements
Section Two: Requirements for all electrical apparatus
5 General
6 Construction
7 Connection facilities and wiring
8 Clearances, creepage distances and separations
9 Electric strength
Section Three: Supplementary requirements for non-sparking
apparatus
10 Rotating machines
11 Fuses and fuse assemblies
12 Luminaires
13 Instruments and low-power apparatus
14 Current transformers
15 Plugs and sockets
16 Cells and batteries
Section Four: Supplementary requirements for apparatus
producing arcs, sparks or hot surfaces
17 General
18 Enclosed-break devices and non-incendive components
19 Hermetically sealed device
20 Sealed device or encapsulated device
21 Energy-limited apparatus and circuits
22 Restricted-breathing enclosures
23 Simplified pressurization
Section Five: Verification and testing
24 General
25 Documents
26 Type tests
27 Routine verifications and tests
Section Six: Marking and documentation
28 Marking
29 Documentation
30 Manufacturer's responsibility
Annex A (normative) Assessment of energy-limited
apparatus and circuits by reference curves and tables

Defines requirements for construction, testing and marking of Group II electrical apparatus with type of protection "n", meant to be used solely in areas where explosive atmospheres of gas, vapour and mist are not likely to occur, or if they do, only infrequently or for a short time.

Committee
SC 31-5
DevelopmentNote
BS 4533:Section 102.51:1986 is proposed to be withdrawn on 30 June 2003, since BS 4533:Section 102.51:1986 conflicts with this EN standard. (03/2001) To be read in conjunction with EN 50014 (04/2001)
DocumentType
Standard
PublisherName
European Committee for Standards - Electrical
Status
Superseded
SupersededBy

Standards Relationship
SN EN 50021 : 1999 Identical
I.S. EN 50021:2001 Identical
CEI EN 50021 : 2ED 2000 Identical
DIN EN 50021 : 2000 Identical
BS EN 50021:1999 Identical
NBN EN 50021 : 1ED 2000 Identical
NEN EN 50021 : 99 C1 2000 Identical
NF EN 50021 : 2000 Identical
UNE-EN 50021:2000 Identical
VDE 0170-16 : 2011 Identical
PN EN 50021 : 2002 Identical

IEEE 303-2004 IEEE Recommended Practice for Auxiliary Devices for Rotating Electrical Machines in Class I, Division 2 and Zone 2 Locations
03/107320 DC : DRAFT APR 2003 EN 14678-1 - LPG EQUIPMENT AND ACCESSORIES - CONSTRUCTION AND PERFORMANCE OF LPG EQUIPMENT FOR AUTOMOTIVE FILLING STATIONS - PART 1: DISPENSERS
10/30227671 DC : 0 BS EN 14678-1 - LPG EQUIPMENT AND ACCESSORIES - CONSTRUCTION AND PERFORMANCE OF LPG EQUIPMENT FOR AUTOMOTIVE FILLING STATIONS - PART 1: DISPENSERS
EN 50381 : 2004 COR 2005 TRANSPORTABLE VENTILATED ROOMS WITH OR WITHOUT AN INTERNAL SOURCE OF RELEASE
UNI EN ISO 8230-3 : 2009 SAFETY REQUIREMENTS FOR DRY-CLEANING MACHINES - PART 3: MACHINES USING COMBUSTIBLE SOLVENTS
CSA PLUS 2203 : 2001 HAZARDOUS LOCATIONS - GUIDE FOR THE DESIGN, TESTING, CONSTRUCTION, AND INSTALLATION OF EQUIPMENT IN EXPLOSIVE ATMOSPHERES
BS EN 50381:2004 Transportable ventilated rooms with or without an internal source of release
DIN EN 13636:2004-10 Cathodic protection of buried metallic tanks and related piping; German version EN 13636:2004
DIN EN ISO 8230-3:2009-05 SAFETY REQUIREMENTS FOR DRY-CLEANING MACHINES - PART 3: MACHINES USING COMBUSTIBLE SOLVENTS
CEI EN 50381 : 2006 TRANSPORTABLE VENTILATED ROOMS WITH OR WITHOUT AN INTERNAL SOURCE OF RELEASE
EEMUA 186 : 2016 A PRACTITIONER'S HANDBOOK FOR POTENTIALLY EXPLOSIVE ATMOSPHERES
PREN 14678-1 : DRAFT 2010 LPG EQUIPMENT AND ACCESSORIES - CONSTRUCTION AND PERFORMANCE OF LPG EQUIPMENT FOR AUTOMOTIVE FILLING STATIONS - PART 1: DISPENSERS
I.S. EN 50381:2004 TRANSPORTABLE VENTILATED ROOMS WITH OR WITHOUT AN INTERNAL SOURCE OF RELEASE
DD ENV 14236:2002 Ultrasonic domestic gas meters
ISO 8230-3:2008 Safety requirements for dry-cleaning machines Part 3: Machines using combustible solvents
BS EN 13636:2004 Cathodic protection of buried metallic tanks and related piping
EN ISO 8230-3:2008 Safety requirements for dry-cleaning machines - Part 3: Machines using combustible solvents (ISO 8230-3:2008)
EN 13636:2004 Cathodic protection of buried metallic tanks and related piping
BS EN ISO 8230-3:2008 Safety requirements for dry-cleaning machines Machines using combustible solvents
I.S. EN ISO 8230-3:2008 SAFETY REQUIREMENTS FOR DRY-CLEANING MACHINES - PART 3: MACHINES USING COMBUSTIBLE SOLVENTS

IEC 60112:2003+AMD1:2009 CSV Method for the determination of the proof and the comparative tracking indices of solid insulating materials
EN 60068-2-75:2014 Environmental testing - Part 2-75: Tests - Test Eh: Hammer tests
EN 60924:1991/A1:1994 SPECIFICATION FOR GENERAL AND SAFETY REQUIREMENTS FOR D.C. SUPPLIED ELECTRONIC BALLASTS FOR TUBULAR FLUORESCENT LAMPS
EN 61048:2006/A1:2016 AUXILIARIES FOR LAMPS - CAPACITORS FOR USE IN TUBULAR FLUORESCENT AND OTHER DISCHARGE LAMP CIRCUITS - GENERAL AND SAFETY REQUIREMENTS (IEC 61048:2006/A1:2015)
HD 214 : 200S2 RECOMMENDED METHOD FOR DETERMINING THE COMPARATIVE TRACKING INDEX OF SOLID INSULATING MATERIALS UNDER MOIST CONDITIONS
EN 60238 : 2004 AMD 2 2011 EDISON SCREW LAMPHOLDERS (IEC 60238:2004/A2:2011)
EN 60034-1:2010/corrigendum Oct. 2010 ROTATING ELECTRICAL MACHINES - PART 1: RATING AND PERFORMANCE
EN 60920:1991/A11:2000 BALLAST FOR TUBULAR FLUORESCENT LAMPS - GENERAL AND SAFETY REQUIREMENTS
EN 50020:2002 Electrical apparatus for potentially explosive atmospheres - Intrinsic safety 'i'
ISO 4892:1981 Plastics Methods of exposure to laboratory light sources
HD 625.1 : 200S1 INSULATION COORDINATION FOR EQUIPMENT WITHIN LOW-VOLTAGE SYSTEMS - PRINCIPLES, REQUIREMENTS AND TESTS
EN 60400:2017 Lampholders for tubular fluorescent lamps and starterholders
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 60947-1:2007/A2:2014 LOW-VOLTAGE SWITCHGEAR AND CONTROLGEAR - PART 1: GENERAL RULES (IEC 60947-1:2007/A2:2014)
HD 611.1 : 200S1 GUIDE FOR THE DETERMINATION OF THERMAL ENDURANCE PROPERTIES OF ELECTRICAL INSULATING MATERIALS - GENERAL GUIDELINES FOR AGEING PROCEDURES AND EVALUATION OF TEST RESULTS
EN 60927:2007/A1:2013 AUXILIARIES FOR LAMPS - STARTING DEVICES (OTHER THAN GLOW STARTERS) - PERFORMANCE REQUIREMENTS (IEC 60927:2007/A1:2013 (34C/951/CDV))
EN 60060-2:2011 High-voltage test techniques - Part 2: Measuring systems
EN 60068-2-27:2009 Environmental testing - Part 2-27: Tests - Test Ea and guidance: Shock
EN 60928:1995/A1:1999 AUXILIARIES FOR LAMPS - A.C. SUPPLIED ELECTRONIC BALLASTS FOR TUBULAR FLUORESCENT LAMPS - GENERAL AND SAFETY REQUIREMENTS
EN 61049:1993 Capacitors for use in tubular fluorescent and other discharge lamp circuits - Performance requirements
EN 60269-3:1995/A1:2003 LOW-VOLTAGE FUSES - PART 3: SUPPLEMENTARY REQUIREMENTS FOR FUSES FOR USE BY UNSKILLED PERSONS (FUSES MAINLY FOR HOUSEHOLD AND SIMILAR APPLICATIONS)
EN 60926:1996/A1:1999 AUXILIARIES FOR LAMPS - STARTING DEVICES (OTHER THAN GLOW STARTERS) - GENERAL AND SAFETY REQUIREMENTS
EN 60155:1995/A2:2007 GLOW-STARTERS FOR FLUORESCENT LAMPS
EN 61184:2017 Bayonet lampholders
ISO 179:1993 Plastics Determination of Charpy impact strength
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)
EN 60922:1997 Auxiliaries for lamps - Ballasts for discharge lamps (excluding tubular fluorescent lamps) - General and safety requirements
HD 611.2 : 200S1 GUIDE FOR THE DETERMINATION OF THERMAL ENDURANCE PROPERTIES OF ELECTRICAL INSULATING MATERIALS - CHOICE OF TEST CRITERIA
EN 50014:1997/A2:1999 ELECTRICAL APPARATUS FOR POTENTIALLY EXPLOSIVE ATMOSPHERES - GENERAL REQUIREMENTS
IEC 60664-1:2007 Insulation coordination for equipment within low-voltage systems - Part 1: Principles, requirements and tests
IEC 60216-1:2013 Electrical insulating materials - Thermal endurance properties - Part 1: Ageing procedures and evaluation of test results
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

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