Eksplosive atmosfærer – Del 14: Konstruktion, udvælgelse og...
31
Dansk standard DS/EN 60079-14 + AC (Sik) 6. udgave 2011-05-27 Eksplosive atmosfærer – Del 14: Konstruktion, udvælgelse og opbygning af elektriske installationer Explosive atmospheres – Part 14: Electrical installations design, selection and erection COPYRIGHT Danish Standards. NOT FOR COMMERCIAL USE OR REPRODUCTION. DS/EN 60079-14 + AC:2011 (Sik)
Transcript of Eksplosive atmosfærer – Del 14: Konstruktion, udvælgelse og...
Dansk standard DS/EN 60079-14 + AC (Sik)
6. udgave
2011-05-27
Eksplosive atmosfærer –Del 14: Konstruktion, udvælgelse og opbygning af elektriske installationer
Explosive atmospheres – Part 14: Electrical installations design, selection and erection
CO
PY
RIG
HT
Dan
ish
Sta
nd
ard
s. N
OT
FO
R C
OM
ME
RC
IAL
US
E O
R R
EP
RO
DU
CT
ION
. DS
/EN
600
79-1
4 +
AC
:201
1 (S
ik)
DS-publikationstyper Dansk Standard udgiver forskellige publikationstyper. Typen på denne publikation fremgår af forsiden.
Der kan være tale om: Dansk standard • standard, der er udarbejdet på nationalt niveau, eller som er baseret på et andet lands nationale standard, eller • standard, der er udarbejdet på internationalt og/eller europæisk niveau, og som har fået status som dansk standard DS-information • publikation, der er udarbejdet på nationalt niveau, og som ikke har opnået status som standard, eller • publikation, der er udarbejdet på internationalt og/eller europæisk niveau, og som ikke har fået status som standard, fx en
teknisk rapport, eller • europæisk præstandard DS-håndbog • samling af standarder, eventuelt suppleret med informativt materiale
DS-hæfte • publikation med informativt materiale
Til disse publikationstyper kan endvidere udgives • tillæg og rettelsesblade
DS-publikationsform Publikationstyperne udgives i forskellig form som henholdsvis
• fuldtekstpublikation (publikationen er trykt i sin helhed) • godkendelsesblad (publikationen leveres i kopi med et trykt DS-omslag) • elektronisk (publikationen leveres på et elektronisk medie)
DS-betegnelse Alle DS-publikationers betegnelse begynder med DS efterfulgt af et eller flere præfikser og et nr., fx DS 383, DS/EN 5414 osv. Hvis der efter nr. er angivet et A eller Cor, betyder det, enten at det er et tillæg eller et rettelsesblad til hovedstandarden, eller at det er indført i hovedstandarden. DS-betegnelse angives på forsiden.
Overensstemmelse med anden publikation: Overensstemmelse kan enten være IDT, EQV, NEQ eller MOD
• IDT: Når publikationen er identisk med en given publikation. • EQV: Når publikationen teknisk er i overensstemmelse med en given publikation, men
præsentationen er ændret. • NEQ: Når publikationen teknisk eller præsentationsmæssigt ikke er i overensstemmelse med en
given standard, men udarbejdet på baggrund af denne. • MOD: Når publikationen er modificeret i forhold til en given publikation.
DS/EN 60079-14 + AC (Sik) KøbenhavnDS projekt: M253532ICS: 29.260.20
Første del af denne publikations betegnelse er: DS/EN, hvilket betyder, at det er en europæisk standard, der har status som dansk standard.
Denne publikations overensstemmelse er: IDT med: IEC 60079-14 ED 4.0:2007. IDT med: EN 60079-14:2008 og EN 60079-14:2008/AC:2011.
DS-publikationen er på dansk og engelsk.
Denne publikation erstatter: DS/EN 60079-14:2008 som kun forelå i engelsksproget version. Der er ikke foretaget ændringer i denne nye udgave, ud over at den danske oversættelse er indføjet og AC er indarbejdet i den danske version.
I tilfælde af tvivl om korrektheden af den danske oversættelse henvises til den engelske version.
CO
PY
RIG
HT
Dan
ish
Sta
nd
ard
s. N
OT
FO
R C
OM
ME
RC
IAL
US
E O
R R
EP
RO
DU
CT
ION
. DS
/EN
600
79-1
4 +
AC
:201
1 (S
ik)
CO
PY
RIG
HT
Dan
ish
Sta
nd
ard
s. N
OT
FO
R C
OM
ME
RC
IAL
US
E O
R R
EP
RO
DU
CT
ION
. DS
/EN
600
79-1
4 +
AC
:201
1 (S
ik)
CO
PY
RIG
HT
Dan
ish
Sta
nd
ard
s. N
OT
FO
R C
OM
ME
RC
IAL
US
E O
R R
EP
RO
DU
CT
ION
. DS
/EN
600
79-1
4 +
AC
:201
1 (S
ik)
EUROPEAN STANDARD EN 60079-14NORME EUROPÉENNE EUROPÄISCHE NORM October 2008
CENELECEuropean Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique Europäisches Komitee für Elektrotechnische Normung
Central Secretariat: rue de Stassart 35, B - 1050 Brussels
© 2008 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members.
Ref. No. EN 60079-14:2008 E
ICS 29.260.20 Supersedes EN 60079-14:2003 and EN 61241-14:2004
English/Danish version
Explosive atmospheres -Part 14: Electrical installations design,
selection and erection (IEC 60079-14:2007)
Atmosphères explosives - Partie 14: Conception,sélection et construction des installations électriques (CEI 60079-14:2007)
Explosionsfähige Atmosphäre - Teil 14: Projektierung,Auswahl und Errichtungelektrischer Anlagen (IEC 60079-14:2007)
This European Standard was approved by CENELEC on 2008-07-01. CENELEC members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration.
Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the Central Secretariat or to any CENELEC member.
This European Standard exists in three official versions (English, French, German). A version in any other language made by translation under the responsibility of a CENELEC member into its own language and notified to the Central Secretariat has the same status as the official versions.
CENELEC members are the national electrotechnical committees of Austria, Belgium, Bulgaria, Cyprus, the Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, the Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and the United Kingdom.
CO
PY
RIG
HT
Dan
ish
Sta
nd
ard
s. N
OT
FO
R C
OM
ME
RC
IAL
US
E O
R R
EP
RO
DU
CT
ION
. DS
/EN
600
79-1
4 +
AC
:201
1 (S
ik)
EN 60079-14:2008 – 2 –
Foreword
The text of document 31J/150/FDIS, future edition 4 of IEC 60079-14, prepared by SC 31J, Classification of hazardous areas and installation requirements, of IEC TC 31, Equipment for explosive atmospheres, was submitted to the IEC-CENELEC parallel vote and was approved by CENELEC as EN 60079-14 on 2008-07-01.
This European Standard supersedes EN 60079-14:2003 and EN 61241-14:2004.
It constitutes a technical revision with respect to gases and vapours and incorporates the requirements for dusts from EN 61241-14:2004. The incorporation of requirements for dust is without technical change.
The significant technical changes with respect to EN 60079-14:2003 are as follows:
– knowledge, skills and competencies of "Responsible Persons”, “Operatives" and "Designers" are explained in Annex F;
– Equipment Protection Levels (EPLs) have been introduced and are explained in the new Annex I;
– dust requirements included from EN 61241-14:2004.
NOTE Dust requirements are included as an interim presentation for the purpose of EN 60079-14:2008 and will be refined in a next edition with other required technical changes.
The following dates were fixed:
– latest date by which the EN has to be implemented at national level by publication of an identical national standard or by endorsement (dop) 2009-05-01
– latest date by which the national standards conflicting with the EN have to be withdrawn (dow) 2011-07-01
Annexes ZA and ZB have been added by CENELEC. __________
Endorsement notice
The text of the International Standard IEC 60079-14:2007 was approved by CENELEC as a European Standard without any modification.
In the official version, for Bibliography, the following notes have to be added for the standards indicated:
IEC/TS 60034-17 NOTE Harmonized as CLC/TS 60034-17:2004 (not modified).
IEC/TS 60034-25 NOTE Harmonized as CLC/TS 60034-25:2005 (not modified).
IEC 60332-2-2 NOTE Harmonized as EN 60332-2-2:2004 (not modified)
IEC 60742 NOTE Harmonized as EN 60742:1995 (modified). Superseded by EN 61558 series (partially modified)
IEC 61008-1 NOTE Harmonized as EN 61008-1:2004 (modified)
IEC 61010-1 NOTE Harmonized as EN 61010-1:2001 (not modified)
IEC 61024-1 NOTE Superseded by IEC 62305-3, which is harmonized as EN 62305-3:2006 (modified)
__________
CO
PY
RIG
HT
Dan
ish
Sta
nd
ard
s. N
OT
FO
R C
OM
ME
RC
IAL
US
E O
R R
EP
RO
DU
CT
ION
. DS
/EN
600
79-1
4 +
AC
:201
1 (S
ik)
– 3 – DS/EN 60079-14:2011
Forord
Teksten i dokument 31J/150/FDIS, forslag til udgave 4 af IEC 60079-14, som blev udarbejdet af SC 31J, Klassifikation af farlige områder og krav til installationer, i IEC TC 31, Udstyr til eksplosive atmosfærer, blev udsendt til IEC-CENELEC-parallelafstemning og blev 2008-07-01 godkendt af CENELEC som EN 60079-14.
Denne europæiske standard erstatter EN 60079-14:2003 og EN 61241-14:2004.
Den udgør en teknisk revision med hensyn til gas og damp og omfatter bestemmelserne for støv fra EN 61241-14:2004. Inkorporeringen af bestemmelser for støv er uden tekniske æn-dringer.
De væsentlige ændringer i forhold til EN 60079-14:2003 er følgende:
– "Ansvarlige personers”, “arbejderes" og "konstruktørers" viden, kvalifikationer og kompe-tencer er forklaret i tillæg F;
– Beskyttelsesniveauer for udstyr (EPL'er) er blevet introduceret og er forklaret i det nye tillæg I;
– Støvbestemmelser er indføjet fra EN 61241-14:2004.
NOTE Støvbestemmelser er indføjet som en foreløbig præsentation i EN 60079-14:2008 og vil blive forbedret i en følgende udgave med andre påkrævede tekniske ændringer.
Følgende datoer blev fastsat:
– Seneste dato, hvor denne EN skal være implementeret nationalt ved publikation af en identisk national standard eller ved endossering (dop) 2009-05-01
– Seneste dato, hvor de nationale standarder, der er i konflikt med denne EN, skal være trukket tilbage (dow) 2011-07-01
Tillæg ZA og ZB er tilføjet af CENELEC. __________
Endosseringsmeddelelse
Teksten i den internationale standard IEC 60079-14:2007 blev uden ændringer godkendt af CENELEC som europæisk standard.
I litteraturlisten i den officielle version skal følgende noter tilføjes for de angivne standarder:
IEC/TS 60034-17 NOTE Harmoniseret som CLC/TS 60034-17:2004 (ikke modificeret).
IEC/TS 60034-25 NOTE Harmoniseret som CLC/TS 60034-25:2005 (ikke modificeret).
IEC 60332-2-2 NOTE Harmoniseret som EN 60332-2-2:2004 (ikke modificeret)
IEC 60742 NOTE Harmoniseret som EN 60742:1995 (modificeret). Erstattet af EN 61558 serien (delvis modificeret)
IEC 61008-1 NOTE Harmoniseret som EN 61008-1:2004 (modificeret)
IEC 61010-1 NOTE Harmoniseret som EN 61010-1:2001 (ikke modificeret)
IEC 61024-1 NOTE Erstattet af IEC 62305-3, som er harmoniseret som EN 62305-3:2006 (modificeret)
__________
CO
PY
RIG
HT
Dan
ish
Sta
nd
ard
s. N
OT
FO
R C
OM
ME
RC
IAL
US
E O
R R
EP
RO
DU
CT
ION
. DS
/EN
600
79-1
4 +
AC
:201
1 (S
ik)
EN 60079-14:2008 – 4 –
CONTENTS
FOREWORD.........................................................................................................................2INTRODUCTION.................................................................................................................16
1 Scope ..........................................................................................................................222 Normative references ...................................................................................................223 Terms and definitions ...................................................................................................28
3.1 General ...............................................................................................................283.2 Hazardous areas .................................................................................................283.3 Flameproof enclosure ..........................................................................................303.4 Increased safety ..................................................................................................303.5 Intrinsic safety - General ......................................................................................323.6 Intrinsic safety parameters ...................................................................................343.7 Pressurization .....................................................................................................343.8 Type of protection 'n' ...........................................................................................363.13 Electrical supply systems .....................................................................................363.14 Equipment ...........................................................................................................38
4 General ........................................................................................................................384.1 General requirements ..........................................................................................384.2 Documentation ....................................................................................................404.3 Assurance of conformity of equipment ..................................................................42
4.3.1 Equipment with certificates according to IEC standards ............................424.3.2 Equipment without certificates according to IEC standards........................424.3.3 Selection of repaired, second hand or existing equipment .........................42
4.4 Qualifications of personnel...................................................................................445 Selection of equipment (excluding cables and conduits) ................................................44
5.1 Information requirements .....................................................................................445.2 Zones..................................................................................................................445.3 Relationship between Equipment protection levels (EPLs) and zones ...................445.4 Selection of equipment according to EPLs............................................................46
5.4.1 Relationship between EPLs and types of protection ..................................465.4.2 Equipment for use in locations requiring EPL 'Ga' or 'Da' ..........................505.4.3 Equipment for use in locations requiring EPL ‘Gb’ or 'Db' ..........................505.4.4 Equipment for use in locations requiring EPL ‘Gc’ or ‘Dc’ ..........................50
5.5 Selection according to equipment grouping ..........................................................505.6 Selection according to the ignition temperature of the gas, vapour or dust
and ambient temperature.....................................................................................525.6.1 General ...................................................................................................525.6.2 Gas or Vapour .........................................................................................525.6.3 Dust ........................................................................................................52
5.7 Selection of radiating equipment for dust..............................................................585.7.1 Ignition process .......................................................................................585.7.2 Safety measures in zone 20 or 21 ............................................................585.7.3 Safety measures in zone 22 .....................................................................60
5.8 Selection of ultrasonic equipment for dust ............................................................605.8.1 Ignition process .......................................................................................605.8.2 Safety measures ......................................................................................60
CO
PY
RIG
HT
Dan
ish
Sta
nd
ard
s. N
OT
FO
R C
OM
ME
RC
IAL
US
E O
R R
EP
RO
DU
CT
ION
. DS
/EN
600
79-1
4 +
AC
:201
1 (S
ik)
– 5 – DS/EN 60079-14:2011
INDHOLD
FORORD ..............................................................................................................................3INTRODUKTION.................................................................................................................17
1 Gyldighedsområde........................................................................................................232 Normative referencer ....................................................................................................233 Udtryk og definitioner....................................................................................................29
3.1 Almindeligt ..........................................................................................................293.2 Farlige områder ...................................................................................................293.3 Tryksikker kapsling ..............................................................................................313.4 Forhøjet sikkerhed...............................................................................................313.5 Egensikkerhed - generelt .....................................................................................333.6 Egensikre parametre ...........................................................................................353.7 Overtrykskapsling ................................................................................................353.8 Beskyttellsesmåde "n" .........................................................................................373.13 Elektriske forsyningssystemer ..............................................................................373.14 Udstyr .................................................................................................................39
4 Almindeligt ...................................................................................................................394.1 Almindelige bestemmelser ...................................................................................394.2 Dokumentation ....................................................................................................414.3 Sikring af overensstemmelse for udstyr ................................................................43
4.3.1 Udstyr med certifikater i henhold til IEC-standarder ..................................434.3.2 Udstyr uden certifikater i henhold til IEC-standarder .................................434.3.3 Udvælgelse af repareret, brugt eller eksisterende udstyr ...........................43
4.4 Personers kvalikationer .......................................................................................455 Udvælgelse af udstyr (undtagen og rør) ...... ....................................................45
5.1 Oplysningskrav ....................................................................................................455.2 Zoner ..................................................................................................................455.3 Forhold mellem udstyrs beskyttelsesniveauer (EPL'er) og zoner ...........................455.4 Udvælgelse af udstyr efter EPL'er ........................................................................47
5.4.1 Forhold mellem EPL'er og beskyttelsesmåder ...........................................475.4.2 Udstyr til brug på steder, som kræver EPL "Ga" eller "Da" ........................515.4.3 Udstyr til brug på steder, som kræver EPL "Gb" eller "Db" ........................515.4.4 Udstyr til brug på steder, som kræver EPL "Gc" eller "Dc" .........................51
5.5 Udvælgelse i henhold til udstyrsgruppering ..........................................................515.6 Udvælgelse i henhold til gassens, dampens eller støvets
antændelsestemperatur og omgivelsestemperatur................................................535.6.1 Almindeligt...............................................................................................535.6.2 Gas eller damp ........................................................................................535.6.3 Støv ........................................................................................................53
5.7 Ud .................595.7.1 Antændelsesproces..................................................................................595.7.2 Sikkerhedsforanstaltninger i zone 20 eller 21............................................595.7.3 Sikkerhedsforanstaltninger i zone 22 ........................................................61
5.8 . .................615.8.1 Antændelsesproces..................................................................................615.8.2 Sikkerhedsforanstaltninger .......................................................................61
CO
PY
RIG
HT
Dan
ish
Sta
nd
ard
s. N
OT
FO
R C
OM
ME
RC
IAL
US
E O
R R
EP
RO
DU
CT
ION
. DS
/EN
600
79-1
4 +
AC
:201
1 (S
ik)
EN 60079-14:2008 – 6 –
5.9 External influences ..............................................................................................605.10 Light metals as construction materials..................................................................62
5.10.1 Gas or vapour ..........................................................................................625.10.2 Dust ........................................................................................................64
5.11 Transportable, Portable and Personal equipment .................................................645.11.1 General ...................................................................................................645.11.2 Transportable and Portable equipment - Gas ............................................645.11.3 Personal Equipment - Gas........................................................................645.11.4 Dust ........................................................................................................66
5.12 Selection of rotating electrical machines ..............................................................665.12.1 General ...................................................................................................665.12.2 Motors fed from a converter supply...........................................................66
5.13 Luminaires ..........................................................................................................665.14 Plugs and socket outlets for dust .........................................................................66
5.14.1 General ...................................................................................................665.14.2 Mounting..................................................................................................685.14.3 Location...................................................................................................68
6 Protection from dangerous (incendive) sparking ............................................................686.1 Danger from live parts .........................................................................................686.2 Danger from exposed and extraneous conductive parts ........................................68
6.2.1 TN type of system earthing.......................................................................686.2.2 TT type of system earthing .......................................................................686.2.3 IT type of system earthing ........................................................................686.2.4 SELV and PELV systems .........................................................................706.2.5 Electrical separation ................................................................................706.2.6 Above hazardous areas............................................................................70
6.3 Potential equalization ..........................................................................................706.3.1 General ...................................................................................................706.3.2 Temporary bonding ..................................................................................72
6.4 Static electricity ...................................................................................................726.4.1 Gas .........................................................................................................726.4.2 Dust ........................................................................................................74
6.5 Lightning protection .............................................................................................746.6 Electromagnetic radiation ....................................................................................766.7 Cathodically protected metallic parts ....................................................................766.8 Ignition by optical radiation ..................................................................................76
7 Electrical protection ......................................................................................................767.1 General ...............................................................................................................767.2 Rotating electrical machines ................................................................................787.3 Transformers .......................................................................................................787.4 Resistance heating devices..................................................................................78
8 Emergency switch-off and electrical isolation ................................................................788.1 Emergency switch-off ..........................................................................................808.2 Electrical isolation ...............................................................................................80
9 Wiring systems .............................................................................................................809.1 General ...............................................................................................................809.2 Aluminium conductors..........................................................................................809.3 Cables.................................................................................................................80
CO
PY
RIG
HT
Dan
ish
Sta
nd
ard
s. N
OT
FO
R C
OM
ME
RC
IAL
US
E O
R R
EP
RO
DU
CT
ION
. DS
/EN
600
79-1
4 +
AC
:201
1 (S
ik)
– 7 – DS/EN 60079-14:2011
5.9 Ydre påvirkninger ................................................................................................615.10 Letmetaller som konstruktionsmaterialer ..............................................................63
5.10.1 Gas eller damp ........................................................................................635.10.2 Støv ........................................................................................................65
5.11 Transportabelt, bærbart og personligt udstyr ........................................................655.11.1 Almindeligt...............................................................................................655.11.2 Transportabelt og bærbart udstyr - Gas ....................................................655.11.3 Personligt udstyr - Gas.............................................................................655.11.4 Støv ........................................................................................................67
5.12 Udvælgelse af roterende elektriske maskiner .......................................................675.12.1 Almindeligt...............................................................................................675.12.2 Motorer forsynet fra en konverterforsyning................................................67
5.13 Armaturer ............................................................................................................675.14 Stikpropper og stikkontakter til støv .....................................................................67
5.14.1 Almindeligt...............................................................................................675.14.2 Montering ................................................................................................695.14.3 Sted ........................................................................................................69
6 Beskyttelse mod farlig (antændende) gnistdannelse ......................................................696.1 Fare fra spændingsførende dele ..........................................................................696.2 Fare fra udsatte dele og fremmede ledende dele ..................................................69
6.2.1 TN-systemjording .....................................................................................696.2.2 TT-systemjording .....................................................................................696.2.3 IT-systemjording ......................................................................................696.2.4 SELV- og PELV-systemer.........................................................................716.2.5 Elektrisk adskillelse..................................................................................716.2.6 Oven over farlige områder ........................................................................71
6.3 Potentialudligning ................................................................................................716.3.1 Almindeligt...............................................................................................716.3.2 Midlertidig udligningsforbindelse...............................................................73
6.4 Statisk elektricitet ................................................................................................736.4.1 Gas .........................................................................................................736.4.2 Støv ........................................................................................................75
6.5 Beskyttelse mod lyn.............................................................................................756.6 Elektromagnetisk stråling .....................................................................................776.7 Katodisk beskyttede metaldele .............................................................................776.8 Antændelse ved optisk stråling ............................................................................77
7 Elektrisk beskyttelse .....................................................................................................777.1 Almindeligt ..........................................................................................................777.2 Roterende elektriske maskiner .............................................................................797.3 Transformere.......................................................................................................797.4 odstand opvarmning ..............................................................79
8 Nødafbrydelse og elektrisk adskillelse...........................................................................798.1 Nødafbrydelse .....................................................................................................818.2 Elektrisk adskillelse .............................................................................................81
9 Ledningssystemer ........................................................................................................819.1 Almindeligt ..........................................................................................................819.2 Aluminiumsledere ................................................................................................819.3 .. .......................................................................................................81
CO
PY
RIG
HT
Dan
ish
Sta
nd
ard
s. N
OT
FO
R C
OM
ME
RC
IAL
US
E O
R R
EP
RO
DU
CT
ION
. DS
/EN
600
79-1
4 +
AC
:201
1 (S
ik)
EN 60079-14:2008 – 8 –
9.3.1 Cables for fixed wiring..............................................................................809.3.2 Cables supplying transportable and portable equipment............................829.3.3 Flexible connections for dust ....................................................................829.3.4 Flexible cables .........................................................................................849.3.5 Non-sheathed single cores .......................................................................849.3.6 Overhead lines.........................................................................................849.3.7 Avoidance of damage...............................................................................849.3.8 Cable surface temperature .......................................................................849.3.9 Flame propagation ...................................................................................869.3.10 Connections of cables to equipment .........................................................86
9.4 Conduit systems ..................................................................................................869.5 Cable and conduit systems ..................................................................................88
9.5.1 EPL 'Ga' ..................................................................................................889.5.2 EPL 'Da' ..................................................................................................889.5.3 Cable and conduit systems for EPL ‘Gb’, ‘Gc’, ‘Db’ and ‘´Dc’.....................90
9.6 Installation requirements......................................................................................909.6.1 Circuits traversing a hazardous area ........................................................909.6.2 Protection of stranded ends......................................................................909.6.3 Unused cores...........................................................................................909.6.4 Unused openings .....................................................................................909.6.5 Fortuitous contact ....................................................................................909.6.6 Jointing....................................................................................................909.6.7 Openings in walls.....................................................................................929.6.8 Passage and collection of flammables ......................................................929.6.9 Static build-up for dust .............................................................................929.6.10 Accumulation of combustible dust.............................................................92
10 Additional requirements for type of protection 'd' – Flameproof enclosures .....................9210.1 General ...............................................................................................................9210.2 Solid obstacles ....................................................................................................9410.3 Protection of flameproof joints..............................................................................9410.4 Cable entry systems ............................................................................................94
10.4.1 General ...................................................................................................9410.4.2 Selection of cable glands .........................................................................96
10.5 Conduit systems ................................................................................................10010.6 Motors...............................................................................................................100
10.6.1 Motors with a converter supply ...............................................................10010.6.2 Reduced-voltage starting (soft starting) ..................................................100
11 Additional requirements for type of protection ‘e’ – Increased safety ............................10211.1 Degree of ingress protection of enclosures (IEC 60034-5 and IEC 60529)...........10211.2 Wiring systems ..................................................................................................102
11.2.1 General .................................................................................................10211.2.2 Cable glands..........................................................................................10211.2.3 Conductor terminations ..........................................................................10411.2.4 Combinations of terminals and conductors for general connection
and junction boxes .................................................................................10411.3 Cage induction motors .......................................................................................104
11.3.1 Mains-operated ......................................................................................10411.3.2 Winding temperature sensors .................................................................10611.3.3 Machines with rated voltage greater than 1 kV ........................................108
CO
PY
RIG
HT
Dan
ish
Sta
nd
ard
s. N
OT
FO
R C
OM
ME
RC
IAL
US
E O
R R
EP
RO
DU
CT
ION
. DS
/EN
600
79-1
4 +
AC
:201
1 (S
ik)
– 9 – DS/EN 60079-14:2011
9.3.1 til fast installation...... ...............................................................819.3.2 , der forsyner transportabelt og bærbart udstyr .................... ......839.3.3 Bøjelige forbindelser til støv .....................................................................839.3.4 Bøjelige er .................... ................................................................859.3.5 Enkeltledere uden kappe..........................................................................859.3.6 Luftledninger............................................................................................859.3.7 Forhindring af beskadigelse .....................................................................859.3.8 overfladetemperatur ................... ............................................859.3.9 Udbredelse af ild ......................................................................................879.3.10 Forbindelser af er til udstyr........ ....................................................87
9.4 Rørsystemer........................................................................................................879.5 - og rørsystemer ................ ....................................................................89
9.5.1 EPL "Ga" .................................................................................................899.5.2 EPL "Da" .................................................................................................899.5.3 - og rørsystemer for EPL "Gb", "Gc", "Db" og "´Dc" ............ .........91
9.6 Installationsbestemmelser....................................................................................919.6.1 Strømkredse, der er ført gennem et farligt område ....................................919.6.2 Beskyttelse af flertrådede ender ...............................................................919.6.3 Ubenyttede ledere....................................................................................919.6.4 Ubenyttede åbninger ................................................................................919.6.5 Tilfældig kontakt ......................................................................................919.6.6 Samling ...................................................................................................919.6.7 Åbninger i vægge.....................................................................................939.6.8 Passage og opsamling af brændbare stoffer .............................................939.6.9 Opbygning af statisk elektricitet støv .. ............................939.6.10 Ophobning af antændeligt støv .................................................................93
10 Yderligere bestemmelser for beskyttelsesmåde "d" - Tryksikre kapslinger ......................9310.1 Almindeligt ..........................................................................................................9310.2 Faste forhindringer ..............................................................................................9510.3 Beskyttelse af tryksikre samlinger ........................................................................9510.4 Systemer til indføring ....... .......................................................................95
10.4.1 Almindeligt...............................................................................................9510.4.2 Udvælgelse af forskruninger.....................................................................97
10.5 Rørsystemer......................................................................................................10110.6 Motorer .............................................................................................................101
10.6.1 Motorer med konverterforsyning .............................................................10110.6.2 Start ved reduceret spænding (soft start) ................................................101
11 Yderligere bestemmelser for beskyttelsesmåde "e" – Forhøjet sikkerhed .....................10311.1 Kapslingsklasse (IEC 60034-5 IEC 60529)...... .............................................10311.2 Ledningssystemer..............................................................................................103
11.2.1 Almindeligt.............................................................................................10311.2.2 Forskruninger ........................................................................................10311.2.3 Ledertilslutninger ...................................................................................10511.2.4 Kombinationer af tilslutningsklemmer og ledere til almindelig
forbindelse og forbindelsesdåser ............................................................10511.3 Kortslutningsmotorer..........................................................................................105
11.3.1 Netdrevne ..............................................................................................10511.3.2 Temperaturfølere for viklinger ................................................................10711.3.3 Maskiner med mærkespænding højere end 1 kV .....................................109
CO
PY
RIG
HT
Dan
ish
Sta
nd
ard
s. N
OT
FO
R C
OM
ME
RC
IAL
US
E O
R R
EP
RO
DU
CT
ION
. DS
/EN
600
79-1
4 +
AC
:201
1 (S
ik)
EN 60079-14:2008 – 10 –
11.3.4 Motors with converter supply ..................................................................10811.3.5 Reduced-voltage starting (soft starting) ..................................................108
11.4 Luminaires ........................................................................................................10812 Additional requirements for types of protection 'i' – Intrinsic safety...............................110
12.1 Introductory remark ...........................................................................................11012.2 Installations to meet the requirements of EPL ‘Gb’ or ‘Gc’...................................110
12.2.1 Equipment .............................................................................................11012.2.2 Cables ...................................................................................................11212.2.3 Termination of intrinsically safe circuits ..................................................12012.2.4 Earthing of intrinsically safe circuits........................................................12212.2.5 Verification of intrinsically safe circuits ...................................................124
12.3 Installations to meet the requirements of EPL 'Ga' ..............................................12812.4 Special applications ...........................................................................................130
13 Additional requirements for pressurized enclosures .....................................................13013.1 Type of protection 'p' .........................................................................................130
13.1.1 General .................................................................................................13013.1.2 Ducting ..................................................................................................13213.1.3 Action to be taken on failure of pressurization.........................................13413.1.4 Multiple pressurized enclosures with a common safety device.................13813.1.5 Purging..................................................................................................13813.1.6 Protective gas ........................................................................................13813.1.7 Wiring systems ......................................................................................140
13.2 Motors...............................................................................................................14013.2.1 Motors with a converter supply ...............................................................14013.2.2 Reduced-voltage starting (soft starting) ..................................................140
13.3 Type of protection 'pD' .......................................................................................14213.3.1 Sources of protective gas .......................................................................14213.3.2 Automatic switch-off ...............................................................................14213.3.3 Alarm.....................................................................................................14213.3.4 Common source of protective gas...........................................................14213.3.5 Switching on electrical supply.................................................................14413.3.6 Motors with a converter supply ...............................................................144
13.4 Rooms for explosive gas atmosphere .................................................................14413.4.1 Pressurized rooms and analyser houses.................................................144
14 Additional requirements for type of protection 'n' .........................................................14414.1 General .............................................................................................................14414.2 Degree of ingress protection of enclosures (IEC 60034-5 and IEC 60529)...........14614.3 Wiring systems ..................................................................................................146
14.3.1 General .................................................................................................14614.3.2 Cable glands..........................................................................................14614.3.3 Conductor terminations ..........................................................................148
14.4 Motors...............................................................................................................14814.4.1 Machines with rated voltage greater than 1 kV ........................................14814.4.2 Motors with converter supply ..................................................................15014.4.3 Reduced-voltage starting (soft starting) ..................................................150
14.5 Luminaires ........................................................................................................15015 Additional requirements for type of protection 'o'– Oil immersion..................................15016 Additional requirements for type of protection 'q' – Powder filling .................................150
CO
PY
RIG
HT
Dan
ish
Sta
nd
ard
s. N
OT
FO
R C
OM
ME
RC
IAL
US
E O
R R
EP
RO
DU
CT
ION
. DS
/EN
600
79-1
4 +
AC
:201
1 (S
ik)
– 11 – DS/EN 60079-14:2011
11.3.4 Motorer med konverterforsyning .............................................................10911.3.5 Start ved reduceret spænding (soft start) ................................................109
11.4 Armaturer ..........................................................................................................10912 Yderligere bestemmelser for beskyttelsesmåde "i" – Egensikkerhed ...........................111
12.1 Indledende bemærkning.....................................................................................11112.2 Installationer der skal opfylde bestemmelserne for EPL "Gb" eller "Gc" .... ..........111
12.2.1 Udstyr....................................................................................................11112.2.2 er ... ...........................................................................................11312.2.3 Tilslutning af egensikre strømkredse ......................................................12112.2.4 Jordforbindelse af egensikre strømkredse...............................................12312.2.5 Verifikation af egensikre strømkredse .....................................................125
12.3 Installationer, der skal opfylde bestemmelserne for EPL "Ga" .............................12912.4 Specielle anvendelser........................................................................................131
13 Yderligere bestemmelser for overtrykskapslinger.........................................................13113.1 Beskyttelsesmåde "p" ........................................................................................131
13.1.1 Almindeligt.............................................................................................13113.1.2 Kanaler ..................................................................................................13313.1.3 Handling, der skal foretages ved overtrykssvigt ......................................13513.1.4 Flere overtrykskapslinger med fælles sikkerhedsindretning .....................13913.1.5 Udluftning ..............................................................................................13913.1.6 Beskyttelsesgas .....................................................................................13913.1.7 Ledningssystemer ..................................................................................141
13.2 Motorer .............................................................................................................14113.2.1 Motorer med konverterforsyning .............................................................14113.2.2 Start ved reduceret spænding (soft start) ................................................141
13.3 Beskyttelsesmåde "pD" ......................................................................................14313.3.1 Beskyttelsesgaskilder.............................................................................14313.3.2 Automatisk afbrydelse ............................................................................14313.3.3 Alarm.....................................................................................................14313.3.4 Fælles beskyttelsesgaskilde ...................................................................14313.3.5 Tilkobling af elektrisk forsyning ..............................................................14513.3.6 Motorer med konverterforsyning .............................................................145
13.4 Rum for eksplosiv gasatmosfære .......................................................................14513.4.1 Overtryksrum og analysehuse ................................................................145
14 Yderligere bestemmelser for beskyttelsesmåde "n"......................................................14514.1 Almindeligt ........................................................................................................14514.2 Kapslingsklasse (IEC 60034-5 og IEC 60529) ....................................................14714.3 Ledningssystemer..............................................................................................147
14.3.1 Almindeligt.............................................................................................14714.3.2 Forskruninger ........................................................................................14714.3.3 Ledertilslutninger ...................................................................................149
14.4 Motorer .............................................................................................................14914.4.1 Maskiner med mærkespænding højere end 1 kV .....................................14914.4.2 Motorer med konverterforsyning .............................................................15114.4.3 Start ved reduceret spænding (soft start) ................................................151
14.5 Armaturer ..........................................................................................................15115 Yderligere bestemmelser for beskyttelsesmåde "o" – Oliekapsling ...............................15116 Yderligere bestemmelser for beskyttelsesmåde "q" – Sand ... ..........................151
CO
PY
RIG
HT
Dan
ish
Sta
nd
ard
s. N
OT
FO
R C
OM
ME
RC
IAL
US
E O
R R
EP
RO
DU
CT
ION
. DS
/EN
600
79-1
4 +
AC
:201
1 (S
ik)
EN 60079-14:2008 – 12 –
17 Additional requirements for type of protection 'm' – Encapsulation ...............................15218 Additional requirements for type of protection 'tD' – Protection by enclosure ................152
18.1 Practices A and B ..............................................................................................15218.2 Practice A .........................................................................................................15218.3 Practice B .........................................................................................................15218.4 Motors supplied at varying frequency and voltages .............................................152
Annex A (normative) Verification of intrinsically safe circuits with more than one associated apparatus with linear current/voltage characteristics.........................................154Annex B (informative) Methods of determining the maximum system voltages and currents in intrinsically safe circuits with more than one associated apparatus with linear current/voltage characteristics (as required by Annex A) ..........................................156Annex C (informative) Determination of cable parameters .................................................162Annex D (informative) Safe work procedure guidelines for explosive gas atmospheres ......166Annex E (normative) Potential stator winding discharge risk assessment – Ignition risk factors ..............................................................................................................................168Annex F (normative) Knowledge, skills and competencies of 'Responsible Persons', 'Operatives' and 'Designers' ..............................................................................................170Annex G (informative) Examples of dust layers of excessive thickness..............................176Annex H (normative) Frictional sparking risks with light metals and their alloys .................178Annex I (informative) Introduction of an alternative risk assessment method encompassing “equipment protection levels” for Ex equipment...........................................180 Annex ZA (normative) Normative references to international publications with their corresponding European publications ................................................................................190 Annex ZB (informative) ATEX Categories and Equipment Protection Levels (EPL's) ..........196
Bibliography .....................................................................................................................198
Figure 1 – Correlation between the maximum permissible surface temperature and depth of dust layers ............................................................................................................56Figure 2 – Selection chart for cable entry devices into flameproof enclosures for cables complying with item b) of 10.4.2 ...............................................................................98Figure 3 – Earthing of conducting screens .........................................................................114Figure B.1 – Series connection – Summation of voltage.....................................................158Figure B.2 – Parallel connection – Summation of currents .................................................158Figure B.3 – Series and parallel connections – Summations of voltages and summations of currents .....................................................................................................160Figure G.1a Excessive layer on top of equipment ............................................................176Figure G.1b Excessive layer on top of equipment due to low ignition temperature of the dust ............................................................................................................................176Figure G.1c Excessive layer at the sides of equipment ....................................................176Figure G.1d Completely submerged equipment ...............................................................176Figure G.1 – Examples for dust layers of excessive thickness with the requirement of laboratory investigation .....................................................................................................176
Table 1 – Equipment protection levels (EPLs) where only zones are assigned......................46
CO
PY
RIG
HT
Dan
ish
Sta
nd
ard
s. N
OT
FO
R C
OM
ME
RC
IAL
US
E O
R R
EP
RO
DU
CT
ION
. DS
/EN
600
79-1
4 +
AC
:201
1 (S
ik)
– 13 – DS/EN 60079-14:2011
17 Yderligere bestemmelser for beskyttelsesmåde "m" – Indstøbning ...............................15318 Yderligere bestemmelser for beskyttelsesmåde "tD" – Beskyttelse med kapsling..........153
18.1 Metode A og B...................................................................................................15318.2 Metode A...........................................................................................................15318.3 Metode B...........................................................................................................15318.4 Motorer, der forsynes ved varierende frekvens og spænding...............................153
Tillæg A (normativt) Verifikation af egensikre strømkredse med mere end én tilhørende udstyrsenhed med lineære strøm/spændingskarakteristikker .............................155Tillæg B (informativt) Metoder til bestemmelse af de maksimale systemspændinger og -strømme i egensikre strømkredse med mere end én tilhørende udstyrsenhed med lineære strøm/spændingskarakteristikker (som foreskrevet i tillæg A).................................157Tillæg C (informativt) Bestemmelse af parametre .... .............................................163Tillæg D (informativt) Retningslinjer for sikker arbejdsprocedure for eksplosive gasatmosfærer .................................................................................................................167Tillæg E (normativt) Risikovurdering vedrørende potentiel udladning fra statorvikling – Risikofaktorer vedrørende antændelse ..............................................................................169Tillæg F (normativt) Ansvarlige personers, operatørers og konstruktørers viden, færdigheder og kompetencer.............................................................................................171Tillæg G (informativt) Eksempler på støvlag af usædvanlig stor tykkelse ...........................177Tillæg H (normativt) Risiko ved friktionsgnistdannelse med letmetaller og deres legeringer .........................................................................................................................179Tillæg I (informativt) Introduktion af en alternativ metode til risikovurdering, som omfatter "udstyrs beskyttelsesniveauer" for Ex-udstyr.................................................181 Tillæg ZA (normativt) Normative henvisninger til internationale publikationer med de tilsvarende europæiske publikationer ................................................................................191 Tillæg ZB (informativt) ATEX-kategorier og materielbeskyttelsesniveauer (EPL'er) ............197
Litteraturliste ....................................................................................................................199
Figur 1 – Sammenhæng mellem den højest tilladte overfladetemperatur og tykkelsen af støvlaget ....................................................................................................57Figur 2 – Udvælgelsesskema for indføringer i tryksikre kapslinger for er, der er i overensstemmelse med 10.4.2, pkt. b) ...... .........................................99Figur 3 – Jordforbindelse af ledende skærme ....................................................................115Figur B.1 – Serieforbindelse – Opsummering af spændinger ..............................................159Figur B.2 – Parallelforbindelse – Opsummering af strømme ...............................................159Figur B.3 – Serie- og parallelforbindelser – Opsummering af spændinger og opsummering af strømme..................................................................................................161
Figur G.1a Usædvanligt tykt støvlag oven på udstyr........................................................177
Figur G.1b Usædvanlig tykt støvlag oven på udstyr som følge af støvets lave antændelsestemperatur ....................................................................................................177
Figur G.1c Usædvanlig tykt støvlag på siderne af udstyr .................................................177
Figur G.1d Fuldstændig nedsænket udstyr......................................................................177Figur G.1 – Eksempler på støvlag af usædvanlig stor tykkelse med krav om laboratorieundersøgelse ...............................................................................177
Tabel 1 – Udstyrs beskyttelsesniveauer (EPL'er), zone . ..........................47
CO
PY
RIG
HT
Dan
ish
Sta
nd
ard
s. N
OT
FO
R C
OM
ME
RC
IAL
US
E O
R R
EP
RO
DU
CT
ION
. DS
/EN
600
79-1
4 +
AC
:201
1 (S
ik)
EN 60079-14:2008 – 14 –
Table 2 – Relationship between types of protection and EPLs..............................................48 Table 3 – Relationship between gas/vapour or dust subdivision and equipment group ..........50Table 4 – Relationship between gas or vapour ignition temperature and temperature class of equipment..............................................................................................................52Table 5 – Limitations of areas .............................................................................................74Table 6 – Minimum distance of obstruction from the flameproof flange joints related to the gas group of the hazardous area ...................................................................................94Table 7 – Assessment for T4 classification according to component size and ambient temperature ......................................................................................................................126Table 8 – Determination of type of protection (with no flammable release within the enclosure) ........................................................................................................................132Table 9 – Use of spark and particle barriers ......................................................................134Table 10 – Action to be taken when the pressurization with the protective gas fails for electrical equipment without an internal source of release..................................................136Table 11 – Summary of protection requirements for enclosures .........................................142Table 12 – Dust tightness practice A .................................................................................152Table 13 – Dust tightness practice B .................................................................................152Table I.1 – Traditional relationship of EPLs to zones (no additional risk assessment) .........184Table I.2 – Description of risk of ignition protection provided..............................................186
CO
PY
RIG
HT
Dan
ish
Sta
nd
ard
s. N
OT
FO
R C
OM
ME
RC
IAL
US
E O
R R
EP
RO
DU
CT
ION
. DS
/EN
600
79-1
4 +
AC
:201
1 (S
ik)
– 15 – DS/EN 60079-14:2011
Tabel 2 – Forhold mellem beskyttelsesmåder og EPL'er ......................................................49 Tabel 3 – Forhold mellem underopdeling af gas/damp eller støv og udstyrsgruppe ...............51Tabel 4 – Forhold mellem antændelsestemperatur for gas eller damp og udstyrets temperaturklasse ................................................................................................................53Tabel 5 – Begrænsning af arealer .......................................................................................75Tabel 6 – Forhindrings mindste afstand fra den tryksikre flangesamling i forhold til det farlige områdes gasgruppe..................................................................................................95Tabel 7 – Bedømmelse for T4-klassifikation i henhold til komponentstørrelse og omgivelsestemperatur .......................................................................................................127Tabel 8 – Bestemmelse af beskyttelsesmåde (uden brændbart udslip inde i kapslingen) ....133Tabel 9 – Anvendelse af gnist- og partikelbarrierer ............................................................135Tabel 10 – Handling, der skal foretages, når overtrykket med beskyttelsesgassen svigter til elektrisk materiel uden intern udslipskilde...........................................................137Tabel 11 – Sammendrag af beskyttelsesbestemmelser for kapslinger ................................143Tabel 12 – Støvtæthedsmetode A .....................................................................................153Tabel 13 – Støvtæthedsmetode B .....................................................................................153Tabel I.1 – Traditionelt forhold mellem EPL'er og zoner (ingen yderligere risikovurdering).................................................................................................................185 Tabel I.2 – Beskrivelse af risiko ved ydet antændelsesbeskyttelse ..................................... 187
CO
PY
RIG
HT
Dan
ish
Sta
nd
ard
s. N
OT
FO
R C
OM
ME
RC
IAL
US
E O
R R
EP
RO
DU
CT
ION
. DS
/EN
600
79-1
4 +
AC
:201
1 (S
ik)
EN 60079-14:2008 – 16 –
INTRODUCTION
Preventive measures to reduce the explosion risk from flammable materials are based on three principles, which shall be applied in the following order:
1) Substitution 2) Control 3) Mitigation
Substitution involves, for example, replacing a flammable material by one which is either not flammable or less flammable.
Control involves, for example:
a) reducing the quantity of flammables; b) avoiding or minimising releases; c) controlling the release; d) preventing the formation of an explosive atmosphere; e) collecting and containing releases; and f) avoiding ignition sources.
NOTE 1 With the exception of item f), all of the above are part of the process of hazardous area classification.
Mitigation involves, for example:
1) reducing the number of people exposed; 2) providing measures to avoid the propagation of an explosion; 3) providing explosion pressure relief; 4) providing explosion pressure suppression; and 5) providing suitable personal protective equipment.
NOTE 2 The above items are part of consequence management when considering risk.
Once the principles of substitution and control (items a) to e)) have been applied, the remaining hazardous areas should be classified into zones according to the likelihood of an explosive atmosphere being present (see IEC 60079-10 or IEC 61241-10). Such classification, which may be used in conjunction with an assessment of the consequences of an ignition, allows equipment protection levels to be determined and hence appropriate types of protection to be specified for each location.
For an explosion to occur, an explosive atmosphere and a source of ignition need to co-exist. Protective measures aim to reduce, to an acceptable level, the likelihood that the electrical installation could become a source of ignition.
By careful design of the electrical installation, it is frequently possible to locate much of the electrical equipment in less hazardous or non-hazardous areas.
When electrical equipment is to be installed in areas where dangerous concentrations and quantities of flammable gases, vapours, mists or dusts may be present in the atmosphere, protective measures are applied to reduce the likelihood of explosion due to ignition by arcs, sparks or hot surfaces, produced either in normal operation or under specified fault conditions.
CO
PY
RIG
HT
Dan
ish
Sta
nd
ard
s. N
OT
FO
R C
OM
ME
RC
IAL
US
E O
R R
EP
RO
DU
CT
ION
. DS
/EN
600
79-1
4 +
AC
:201
1 (S
ik)
– 17 – DS/EN 60079-14:2011
INTRODUKTION
Præventive foranstaltninger for at reducere eksplosionsfaren fra brændbare materialer er ba-seret på tre principper, som skal tages i anvendelse i følgende orden:
1) Erstatning 2) Kontrol3) Reduktion
Erstatning omfatter fx udskiftning af et brændbart materiale med et andet, som enten ikke er brændbart eller mindre brændbart.
Styring omfatter fx:
a) at reducere mængden af brændbart materiale; b) at undgå eller minimere udslip; c) at kontrollere udslippet; d) at forhindre dannelsen af en eksplosiv atmosfære; e) at indsamle og dæmme op for udslip; og f) at undgå antændelseskilder.
NOTE 1 Med undtagelse af punkt f) er alt det ovennævnte en del af processen for klassifikation af farlige områ-der.
Reduktion omfatter fx:
1) at reducere antallet af personer, der påvirkes; 2) at sørge for foranstaltninger til at undgå spredning af en eksplosion; 3) at sørge for aflastning af eksplosionstryk; 4) at sørge for undertrykkelse af eksplosionstryk; og 5) at sørge for egnet udstyr til personbeskyttelse.
NOTE 2 Ovennævnte punkter er en del af konsekvensledelse, når faren overvejes.
Når principperne for erstatning og styring (punkt a) til e)) er taget i anvendelse, bør de reste-rende farlige områder klassificeres i zoner i henhold til sandsynligheden for, at en eksplosiv atmosfære er til stede (se IEC 60079-10 eller IEC 61241-10). En sådan klassifikation, som kan anvendes i forbindelse med en bedømmelse af konsekvenserne af en antændelse, gør det muligt at bestemme beskyttelsesniveauer for udstyr og således at specificere passende beskyttelsesforanstaltninger for hvert sted.
For at en eksplosion skal kunne forekomme, skal en eksplosiv atmosfære og en antændel-seskilde nødvendigvis være til stede samtidig. Sandsynligheden for, at den elektriske installa-tion kan blive en antændelseskilde, skal reduceres til et acceptabelt niveau ved hjælp af be-skyttelsesforanstaltninger.
Ved omhyggelig konstruktion af den elektriske installation er det ofte muligt at anbringe meget af det elektriske udstyr i mindre farlige eller ufarlige områder.
Når elektrisk udstyr skal installeres i områder, hvor farlige koncentrationer og mængder af brændbare gasser, dampe, tåger eller støv kan være til stede i atmosfæren, tages der be-skyttelsesforanstaltinger i anvendelse for reducere sandsynligheden for eksplosion som følge af antændelse fra lysbuer, gnister eller varme overflader, der dannes enten under normal drift eller under specificerede fejlforhold.
CO
PY
RIG
HT
Dan
ish
Sta
nd
ard
s. N
OT
FO
R C
OM
ME
RC
IAL
US
E O
R R
EP
RO
DU
CT
ION
. DS
/EN
600
79-1
4 +
AC
:201
1 (S
ik)
EN 60079-14:2008 – 18 –
Many types of dust that are generated, processed, handled and stored, are combustible. When ignited they can burn rapidly and with considerable explosive force if mixed with air in the appropriate proportions. It is often necessary to use electrical apparatus in locations where such combustible materials are present, and suitable precautions must therefore be taken to ensure that all such apparatus is adequately protected so as to reduce the likelihood of ignition of the external explosive atmosphere. In electrical apparatus, potential ignition sources include electrical arcs and sparks, hot surfaces and frictional sparks.
Areas where dust, flyings and fibres in air occur in dangerous quantities are classified as hazardous and are divided into three zones according to the level of risk.
Combustible dust can be ignited by equipment in several ways:
by surfaces of the apparatus that are above the minimum ignition temperature of the dust concerned. The temperature at which a type of dust ignites is a function of the properties of the dust, whether the dust is in a cloud or layer, the thickness of the layer and the geometry of the heat source;
by arcing or sparking of electrical parts such as switches, contacts, commutators, brushes, or the like;
by discharge of an accumulated electrostatic charge;
by radiated energy (e.g. electromagnetic radiation);
by mechanical sparking or frictional sparking associated with the apparatus.
In order to avoid dust ignition hazards it is necessary that:
the temperature of surfaces on which dust can be deposited, or which would be in contact with a dust cloud, is kept below the temperature limitation specified in this standard;
any electrical sparking parts, or parts having a temperature above the temperature limit specified in this standard:
are contained in an enclosure which adequately prevents the ingress of dust, or
the energy of electrical circuits is limited so as to avoid arcs, sparks or temperatures capable of igniting combustible dust;
any other ignition sources are avoided.
Several types of protection are available for electrical equipment in hazardous areas (see IEC 60079-0), and this standard gives the specific requirements for design, selection and erection of electrical installations in explosive atmospheres.
This part of IEC 60079 is supplementary to other relevant IEC standards, for example IEC 60364 series as regards electrical installation requirements. This part also refers to IEC 60079-0 and its associated standards for the construction, testing and marking requirements of suitable electrical equipment.
This standard is based on the assumption that electrical equipment is correctly installed, tested, maintained and used in accordance with its specified characteristics.
Inspection, maintenance and repair aspects play an important role in control of hazardous area installations and the user’s attention is drawn to IEC 60079-17 and IEC 60079-19 for further information concerning these aspects.
In any industrial installation, irrespective of size, there may be numerous sources of ignition apart from those associated with electrical equipment. Precautions may be necessary to ensure safety from other possible ignition sources, but guidance on this aspect is outside the scope of this standard.
CO
PY
RIG
HT
Dan
ish
Sta
nd
ard
s. N
OT
FO
R C
OM
ME
RC
IAL
US
E O
R R
EP
RO
DU
CT
ION
. DS
/EN
600
79-1
4 +
AC
:201
1 (S
ik)
– 19 – DS/EN 60079-14:2011
Mange støvtyper, som frembringes, forarbejdes, håndteres og opbevares, er brændbare. Når de antændes, kan de brænde hurtigt og med betragtelig eksplosiv kraft, hvis de blandes med luft i passende forhold. Det er ofte nødvendigt at anvende elektrisk udstyr på steder, hvor så-danne brændbare materialer er til stede, og der skal derfor træffes passende foranstaltninger til at sikre, at alt sådant udstyr er tilstrækkeligt beskyttet til at reducere sandsynligheden for antændelse af den ydre eksplosive atmosfære. I elektrisk udstyr omfatter potentielle antæn-delseskilder elektriske lysbuer og gnister, varme overflader og friktionsgnister.
Områder, hvor støv, svævestøv og fibre i luft forekommer i farlige mængder, klassificeres som farlige og inddeles i tre zoner efter risikoniveauet.
Brændbart støv kan antændes af udstyr på adskillige måder:
af udstyrets overflader med temperaturer, som er over det pågældende støvs laveste an-tændelsestemperatur. Den temperatur, som en støvtype antændes ved, er en funktion af støvets egenskaber, om støvet er i en sky eller et lag, lagtykkelsen og varmekildens form;
af lysbuer eller gnister fra elektriske dele som fx omskiftere, kontakter, kommutatorer, børster o.l.;
af udladning af en akkumuleret elektrostatisk ladning;
af udstrålet energi (fx elektromagnetisk stråling);
af mekaniske gnister eller friktionsgnister i forbindelse med udstyret.
For at undgå antændelsesfarer er følgende nødvendigt,
at temperaturen på overflader, der kan afsættes støv på, eller som kan være i kontakt med en støvsky, holdes under den temperaturgrænse, der er angivet i denne standard.;
at alle elektriske gnistdannende dele eller dele, der har en temperatur over den tempera-turgrænse, der er angivet i denne standard,
indesluttes i en kapsling, som tilstrækkeligt forhindrer indtrængen af støv, eller
elektriske kredses energi begrænses sådan, at lysbuer, gnister eller temperaturer, der er i stand til at antænde brændbart støv, undgås;
at alle andre antændelseskilder undgås.
Der er adskillige beskyttelsesmåder til rådighed for elektrisk udstyr i farlige områder (se IEC 60079-0), og denne standard angiver de specifikke krav til konstruktion, udvælgelse og opbygning af elektriske installationer i eksplosive atmosfærer.
Denne del af IEC 60079 supplerer andre relevante IEC-standarder, fx IEC 60364-serien med hensyn til bestemmelser for elektriske installationer. Denne del henviser også til IEC 60079-0 og de tilknyttede standarder for konstruktions-, afprøvnings- og mærkningsbestemmelserne for egnet elektrisk udstyr.
Denne standard er baseret på den antagelse, at elektrisk udstyr er korrekt installeret, afprø-vet, vedligeholdt og anvendt i henhold til dets angivne egenskaber.
Eftersyns-, vedligeholdelses- og reparationsaspekter spiller en vigtig rolle i styringen af in-stallationer i farlige områder, og brugerens opmærksomhed henledes på IEC 60079-17 og IEC 60079-19 for yderligere oplysninger vedrørende disse aspekter.
I enhver industriinstallation kan der uanset størrelsen være talrige antændelseskilder ud over dem, der knytter sig til elektrisk udstyr. Foranstaltninger kan være nødvendige af hensyn til sikkerheden fra andre mulige antændelseskilder, men vejledning om dette aspekt er uden for denne standards gyldighedsområde.
CO
PY
RIG
HT
Dan
ish
Sta
nd
ard
s. N
OT
FO
R C
OM
ME
RC
IAL
US
E O
R R
EP
RO
DU
CT
ION
. DS
/EN
600
79-1
4 +
AC
:201
1 (S
ik)
EN 60079-14:2008 – 20 –
In IEC 61241-1, for protection by enclosure 'tD', two different types of practice, A and B, are specified and are intended to provide an equivalent level of protection.
Both of these practices are in common use and the requirements of each should be followed without mixing either the apparatus requirements or selection/installation requirements of the two practices. They adopt different methodology with the primary differences being:
Practice A Practice B
Written principally as performance based requirements Written as both performance and prescriptive based requirements
Maximum surface temperature is determined with 5 mm layer of dust and installation rules require 75 °C margin between the surface temperature and ignition temperature of the particular dust
Maximum surface temperature is determined with 12,5 mm layer of dust and installation rules require 25 °C margin between the surface temperature and ignition temperature of the particular dust
A method of achieving the required dust ingress protection by the use of resilient seals on joints and rubbing seals on rotating or moving shafts or spindles and determining dust ingress according to IEC 60529 -IP Code
A method of achieving the required dust ingress protection by specified widths and clearances between joint faces and, in the case of shafts and spindles, specified lengths and diametrical clearances between moving and stationary parts and determining dust ingress according to the heat cycling test
CO
PY
RIG
HT
Dan
ish
Sta
nd
ard
s. N
OT
FO
R C
OM
ME
RC
IAL
US
E O
R R
EP
RO
DU
CT
ION
. DS
/EN
600
79-1
4 +
AC
:201
1 (S
ik)
– 21 – DS/EN 60079-14:2011
I IEC 61241-1 er der for beskyttelse med kapsling "tD" angivet to forskellige metoder, A og B, og de er beregnet til at give samme beskyttelsesniveau.
Begge disse metoder er i almindelig brug, og bestemmelserne for hver af dem bør følges uden at sammenblande de to metoders udstyrsbestemmelser eller udvælgel-ses-/installationsbestemmelser. De anvender forskellig metodik, og de primære forskelle er:
Metode A Metode B
Væsentligt skrevet som ydelsesmæssigt baserede be-stemmelser
Skrevet som både ydelsesmæssige og forskriftsmæs-sige bestemmelser
Den højeste overfladetemperatur bestemmes med et støvlag på 5 mm, og installationsbestemmelserne fore-skriver en margen på 75 °C mellem overfladetemperaturen og det pågældende støvs antændelsestemperatur
Den højeste overfladetemperatur bestemmes med et støvlag på 12,5 mm, og installationsbestemmelserne foreskriver en margen på 25 °C mellem overfladetem-peraturen og det pågældende støvs antændelsestem-peratur
En metode til at opnå den foreskrevne beskyttelse mod indtrængen af støv ved at anvende elastiske pakninger i sammenføjninger og gummipakninger på roterende eller bevægelige aksler eller spindler samt at bestemme ind-trængen af støv i henhold til IEC 60529 – IP-kapslings-klasser
En metode til at opnå den foreskrevne beskyttelse mod indtrængen af støv ved foreskrevne bredder af og af-stande mellem sammenføjningsflader og for aksler og spindler foreskrevne længder af og diametrale afstande mellem bevægelige og stationære dele samt at be-stemme indtrængen af støv i henhold til den cykliske varmeprøve
CO
PY
RIG
HT
Dan
ish
Sta
nd
ard
s. N
OT
FO
R C
OM
ME
RC
IAL
US
E O
R R
EP
RO
DU
CT
ION
. DS
/EN
600
79-1
4 +
AC
:201
1 (S
ik)
EN 60079-14:2008 – 22 –
EXPLOSIVE ATMOSPHERES –
Part 14: Electrical installations design, selection and erection
1 Scope
This part of IEC 60079 contains the specific requirements for the design, selection and erection of electrical installations in hazardous areas associated with explosive atmospheres.
Where the equipment is required to meet other environmental conditions, for example, protection against ingress of water and resistance to corrosion, additional methods of protection may be necessary. The method used should not adversely affect the integrity of the enclosure.
The requirements of this standard apply only to the use of equipment under normal or near normal atmospheric conditions. For other conditions, additional precautions may be necessary. For example, most flammable materials and many materials which are normally regarded as non-flammable might burn vigorously under conditions of oxygen enrichment. Other precautions might also be necessary in the use of equipment under conditions of extreme temperature and pressure. Such precautions are beyond the scope of this standard.
These requirements are in addition to the requirements for installations in non-hazardous areas.
This standard applies to all electrical equipment including fixed, portable, transportable and personal, and installations, permanent or temporary.
It applies to installations at all voltages.
This standard does not apply to
– electrical installations in mines susceptible to firedamp; NOTE This standard may apply to electrical installations in mines where explosive gas atmospheres other than firedamp may be formed and to electrical installations in the surface installation of mines.
– inherently explosive situations and dust from explosives or pyrophoric substances (for example explosives manufacturing and processing);
– rooms used for medical purposes; – electrical installations in areas where the hazard is due to hybrid mixtures of combustible
dust and explosive gas, vapour or mist.
This standard does not take into account of any risk due to an emission of flammable or toxic gas from the dust.
2 Normative references
The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.
IEC 60034-1, Rotating electrical machines – Part 1: Rating and performance
IEC 60034-5, Rotating electrical machines – Part 5: Degrees of protection provided by the integral design of rotating electrical machines (IP code) – Classification
CO
PY
RIG
HT
Dan
ish
Sta
nd
ard
s. N
OT
FO
R C
OM
ME
RC
IAL
US
E O
R R
EP
RO
DU
CT
ION
. DS
/EN
600
79-1
4 +
AC
:201
1 (S
ik)
– 23 – DS/EN 60079-14:2011
EKSPLOSIVE ATMOSFÆRER –
Del 14: Konstruktion, udvælgelse og opbygning af elektriske installationer
1 Gyldighedsområde
Denne del af IEC 60079 indeholder de specifikke bestemmelser for konstruktion, udvælgelse og opbygning af elektriske installationer i farlige områder, der er tilknyttet eksplosive atmo-sfærer.
Hvor det er påkrævet, at udstyret skal overholde andre miljømæssige forhold, fx beskyttelse mod indtrængen af vand og modstandsdygtighed over for korrosion, kan yderligere beskyttel-sesmetoder være nødvendige. Den anvendte metode bør ikke ugunstigt påvirke kapslingens integritet.
Bestemmelserne i denne standard gælder kun for brugen af udstyr under normale eller næ-sten normale atmosfæriske forhold. For andre forhold kan yderligere foranstaltninger være nødvendige. Fx kan de fleste brændbare materialer og mange materialer, som normalt be-tragtes som ikke-brændbare, brænde voldsomt under iltberigede forhold. Andre foranstaltnin-ger kan også være nødvendige ved brugen af udstyr under ekstreme temperatur- og trykfor-hold. Sådanne foranstaltninger ligger uden for denne standards gyldighedsområde.
Disse bestemmelser gælder i tillæg til bestemmelserne for installationer i ufarlige områder.
Denne standard gælder for alt fastmonteret, bærbart, transportabelt og personligt elektrisk udstyr samt installationer, hvad enten de er permanente eller midlertidige.
Den gælder for installationer ved alle spændinger.
Denne standard gælder ikke for
– elektriske installationer i miner, hvor der er mulighed for grubegas; NOTE Denne standard kan være gældende for elektriske installationer i miner, hvor andre eksplosive gas-atmosfærer end grubegas kan dannes, og for elektriske installationer i miners overfladeinstallation.
– situationer, der i sagens natur er eksplosive, og støv fra sprængstoffer eller pyrofore stof-fer (fx fremstilling og bearbejdning af sprængstoffer);
– rum, der anvendes til medicinske formål; – elektriske installationer i områder, hvor faren er en følge af hybride blandinger af antæn-
deligt støv og eksplosiv gas, damp eller tåge.
Denne standard tager ikke hensyn til eventuel risiko som følge af udsendelse af brændbar eller giftig gas fra støvet.
2 Normative referencer
Følgende referencedokumenter er uundværlige for anvendelsen af dette dokument. For date-rede referencer gælder kun den angivne udgave. For udaterede referencer gælder den sene-ste udgave af referencedokumentet (herunder eventuelle amendments).
IEC 60034-1, Rotating electrical machines – Part 1: Rating and performance
IEC 60034-5, Rotating electrical machines – Part 5: Degrees of protection provided by the integral design of rotating electrical machines (IP code) – Classification
CO
PY
RIG
HT
Dan
ish
Sta
nd
ard
s. N
OT
FO
R C
OM
ME
RC
IAL
US
E O
R R
EP
RO
DU
CT
ION
. DS
/EN
600
79-1
4 +
AC
:201
1 (S
ik)
EN 60079-14:2008 – 24 –
IEC 60050-826, International Electrotechnical Vocabulary – Part 826: Electrical installations
IEC 60060-1, High-voltage test techniques – Part 1: General definitions and test requirements
IEC 60079 (all parts), Explosive atmospheres
IEC 60079-0, Explosive atmospheres – Part 0: Equipment – General requirements
IEC 60079-1, Explosive atmospheres – Part 1: Equipment protection by flameproof enclosures “d”
IEC 60079-2, Explosive atmospheres – Part 2: Equipment protection by pressurized enclosure «p»
IEC 60079-5, Explosive atmospheres – Part 5: Equipment protection by powder filling «q»
IEC 60079-6, Explosive atmospheres – Part 6: Equipment protection by oil immersion “o”
IEC 60079-7, Explosive atmospheres – Part 7: Equipment protection by increased safety “e”
IEC 60079-11, Explosive atmospheres – Part 11: Equipment protection by intrinsic safety "i"
IEC/TR 60079-13, Electrical apparatus for explosive gas atmospheres – Part 13: Construction and use of rooms or buildings protected by pressurization
IEC 60079-14, Electrical apparatus for explosive gas atmospheres – Part 14:Electrical installations in hazardous areas (other than mines)
IEC 60079-15, Electrical apparatus for explosive gas atmospheres – Part 15: Construction, test and marking of type of protection "n" electrical apparatus
IEC 60079-16, Electrical apparatus for explosive gas atmospheres – Part 16:Artificial ventilation for the protection of analyzer(s) houses
IEC 60079-18, Electrical apparatus for explosive gas atmospheres – Part 18:Construction, test and marking of type of protection encapsulation "m" electrical apparatus
IEC 60079-19, Explosive atmospheres – Part 19: Equipment repair, overhaul and reclamation
IEC 60079-25, Electrical apparatus for explosive gas atmospheres – Part 25: Intrinsically safe systems
IEC 60079-26, Explosive atmospheres – Part 26: Equipment with equipment protection level (EPL) Ga
IEC 60079-27, Electrical apparatus for explosive gas atmospheres – Part 27: Fieldbus intrinsically safe concept (FISCO) and Fieldbus non-incendive concept (FNICO)
IEC 60079-28, Explosive atmospheres – Part 28: Protection of equipment and transmissionsystems using optical radiation
IEC 60079-29-1, Explosive atmospheres – Part 29-1: Gas detectors – Performance requirements of detectors for flammable gases
IEC 60079-29-2, Explosive atmospheres – Part 29-2: Gas detectors – Selection, installation, use and maintenance of detectors for flammable gases and oxygen
CO
PY
RIG
HT
Dan
ish
Sta
nd
ard
s. N
OT
FO
R C
OM
ME
RC
IAL
US
E O
R R
EP
RO
DU
CT
ION
. DS
/EN
600
79-1
4 +
AC
:201
1 (S
ik)
– 25 – DS/EN 60079-14:2011
IEC 60050-826, International Electrotechnical Vocabulary – Part 826: Electrical installations
IEC 60060-1, High-voltage test techniques – Part 1: General definitions and test requirements
IEC 60079 (all parts), Explosive atmospheres
IEC 60079-0, Explosive atmospheres – Part 0: Equipment – General requirements
IEC 60079-1, Explosive atmospheres – Part 1: Equipment protection by flameproof enclosures “d”
IEC 60079-2, Explosive atmospheres – Part 2: Equipment protection by pressurized enclosure «p»
IEC 60079-5, Explosive atmospheres – Part 5: Equipment protection by powder filling «q»
IEC 60079-6, Explosive atmospheres – Part 6: Equipment protection by oil immersion “o”
IEC 60079-7, Explosive atmospheres – Part 7: Equipment protection by increased safety “e”
IEC 60079-11, Explosive atmospheres – Part 11: Equipment protection by intrinsic safety "i"
IEC/TR 60079-13, Electrical apparatus for explosive gas atmospheres – Part 13: Construction and use of rooms or buildings protected by pressurization
IEC 60079-14, Electrical apparatus for explosive gas atmospheres – Part 14:Electrical installations in hazardous areas (other than mines)
IEC 60079-15, Electrical apparatus for explosive gas atmospheres – Part 15: Construction, test and marking of type of protection "n" electrical apparatus
IEC 60079-16, Electrical apparatus for explosive gas atmospheres – Part 16:Artificial ventilation for the protection of analyzer(s) houses
IEC 60079-18, Electrical apparatus for explosive gas atmospheres – Part 18:Construction, test and marking of type of protection encapsulation "m" electrical apparatus
IEC 60079-19, Explosive atmospheres – Part 19: Equipment repair, overhaul and reclamation
IEC 60079-25, Electrical apparatus for explosive gas atmospheres – Part 25: Intrinsically safe systems
IEC 60079-26, Explosive atmospheres – Part 26: Equipment with equipment protection level (EPL) Ga
IEC 60079-27, Electrical apparatus for explosive gas atmospheres – Part 27: Fieldbus intrinsically safe concept (FISCO) and Fieldbus non-incendive concept (FNICO)
IEC 60079-28, Explosive atmospheres – Part 28: Protection of equipment and transmissionsystems using optical radiation
IEC 60079-29-1, Explosive atmospheres – Part 29-1: Gas detectors – Performance requirements of detectors for flammable gases
IEC 60079-29-2, Explosive atmospheres – Part 29-2: Gas detectors – Selection, installation, use and maintenance of detectors for flammable gases and oxygen
CO
PY
RIG
HT
Dan
ish
Sta
nd
ard
s. N
OT
FO
R C
OM
ME
RC
IAL
US
E O
R R
EP
RO
DU
CT
ION
. DS
/EN
600
79-1
4 +
AC
:201
1 (S
ik)
EN 60079-14:2008 – 26 –
IEC 60079-31, Explosive atmospheres – Part 31: Equipment dust ignition protection by enclosure “tD”1
IEC 60243-1, Electrical strength of insulating materials – Test methods – Part 1: Tests at power frequencies
IEC 60332-1-2, Tests on electric and optical cables under fire conditions – Part 1-2: Test for vertical flame propagation for a single insulated wire or cable-Procedure for 1KW pre-mixed flame
IEC 60364 (all parts) Low-voltage electrical installations
IEC 60364-4-41, Low-voltage electrical installations – Part 4-41: Protection for safety –Protection against electric shock
IEC 60529, Degrees of protection provided by enclosure (IP code)
IEC 60950 (all parts), Information technology equipment – Safety
IEC 61010-1, Safety requirements for electrical equipment for measurement, control, and laboratory use - Part 1: General requirements
IEC 61241 (all parts), Electrical apparatus for use in the presence of combustible dust
IEC 61241-0, Electrical apparatus for use in the presence of combustible dust – Part 0: General requirements
IEC 61241-1, Electrical apparatus for use in the presence of combustible dust – Part 1: Protection by enclosures "tD"
IEC 61241-2-1, 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
IEC 61241-4, Electrical apparatus for use in the presence of combustible dust – Part 4:Type of protection "pD"
IEC 61241-10, Electrical apparatus for use in the presence of combustible dust – Part 10: Classification of areas where combustible dusts are or may be present
IEC 61241-11, Electrical apparatus for use in the presence of combustible dust – Part 11: Protection by intrinsic safety 'iD'
IEC 61285, Industrial process control – Safety of analyser houses
IEC 61558-2-6, Safety of power transformers, power supply units and similar – Part 2-6: Particular requirements for safety isolating transformers for general use
IEC 62305-3, Protection against lightning – Part 3 Physical damage to structures and life hazard
ISO 10807, Pipework – Corrugated flexible metallic hose assemblies for the protection of electric cables in explosive atmospheres
———————1 To be published
CO
PY
RIG
HT
Dan
ish
Sta
nd
ard
s. N
OT
FO
R C
OM
ME
RC
IAL
US
E O
R R
EP
RO
DU
CT
ION
. DS
/EN
600
79-1
4 +
AC
:201
1 (S
ik)
– 27 – DS/EN 60079-14:2011
IEC 60079-31, Explosive atmospheres – Part 31: Equipment dust ignition protection by enclosure “tD”1
IEC 60243-1, Electrical strength of insulating materials – Test methods – Part 1: Tests at power frequencies
IEC 60332-1-2, Tests on electric and optical cables under fire conditions – Part 1-2: Test for vertical flame propagation for a single insulated wire or cable-Procedure for 1KW pre-mixed flame
IEC 60364 (all parts) Low-voltage electrical installations
IEC 60364-4-41, Low-voltage electrical installations – Part 4-41: Protection for safety –Protection against electric shock
IEC 60529, Degrees of protection provided by enclosure (IP code)
IEC 60950 (all parts), Information technology equipment – Safety
IEC 61010-1, Safety requirements for electrical equipment for measurement, control, and laboratory use - Part 1: General requirements
IEC 61241 (all parts), Electrical apparatus for use in the presence of combustible dust
IEC 61241-0, Electrical apparatus for use in the presence of combustible dust – Part 0: General requirements
IEC 61241-1, Electrical apparatus for use in the presence of combustible dust – Part 1: Protection by enclosures "tD"
IEC 61241-2-1, 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
IEC 61241-4, Electrical apparatus for use in the presence of combustible dust – Part 4:Type of protection "pD"
IEC 61241-10, Electrical apparatus for use in the presence of combustible dust – Part 10: Classification of areas where combustible dusts are or may be present
IEC 61241-11, Electrical apparatus for use in the presence of combustible dust – Part 11: Protection by intrinsic safety 'iD'
IEC 61285, Industrial process control – Safety of analyser houses
IEC 61558-2-6, Safety of power transformers, power supply units and similar – Part 2-6: Particular requirements for safety isolating transformers for general use
IEC 62305-3, Protection against lightning – Part 3 Physical damage to structures and life hazard
ISO 10807, Pipework – Corrugated flexible metallic hose assemblies for the protection of electric cables in explosive atmospheres
———————1 Kommende publikation
CO
PY
RIG
HT
Dan
ish
Sta
nd
ard
s. N
OT
FO
R C
OM
ME
RC
IAL
US
E O
R R
EP
RO
DU
CT
ION
. DS
/EN
600
79-1
4 +
AC
:201
1 (S
ik)
