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TÜV 10 ATEX 2539 X
Group II
4 II (3)G
Conditions in Hazardous Areas (ATEX 94/9/EG)
[Ex ia] IIB T4
1 0044
Conditions Marking
Equipment can beused without restriction
–
Observe specialoperating conditions
X
Ex component withpart certificate cannotbe used alone;CE conformity is onlycertified after installationin complete equipment
U
Associa-tedequip-ment [ ]
Useoutsidehazardousarea,effectivein Ex area
EN60079-0(2006)
[Ex ib] IIB
EN60079-0(starting fromEdition 5.0)
[Ex ib Ga] IIB
Equip-ment
Usewithinhazardousarea
EN60079-0(2006)
Ex ib IIB T4
EN60079-0(starting fromEdition 5.0)
Ex ib IIB T4 Ga
Flamma-ble sub-stances
Class Division Group Zone Temporary behavior ofthe flammable sub-stance in Ex area
Gases,vapors,liquids
Class I 1 A, B , C, D 0 or 1 Permanent ly, for longperiods, frequently
Occasionally
2 A, B, C, D 2 Normally not, only fora short period
Dust Class II 1 E, F, G 20 or 21 Permanently, for longperiods, frequently
Occasionally
2 E, F 22 Normally not, only fora short period
Fibers Class III 1 – 20 or 21 Constantly
Occasionally
2 – 22 Normally not, only fora short period
Gas ignition temperatures
Ammonia 630°C
Methane 595°C
Hydrogen 560°C
Propane 470°C
Ethylene 425°C
Butane 365°C
Acetylene 305°C
Cyclohexane 259°C
Diethyl ether 170°C
Carbon disulfide 95°C
Gas Ignition Temperatures
Ammonia 630°C
Methane 595°C
Hydrogen 560°C
Propane 470°C
Ethylene 425°C
Butane 365°C
Acetylene 305°C
Cyclohexane 259°C
Diethyl ether 170°C
Carbon disulfide 95°C
Year “ATmosphère EXplosible” EC directive
Approvalnumber
Group A: Acetylene, B: Hydrogen, C: Ethylene, D: PropaneGroup E: Metal dust, F: Coal dust, G: Grain dust
Gas Conditions Group I
Methane Minessusceptibleto firedamp(coal mining)
150°C With deposits of coal dust onthe operating equipment
450°C Without deposits of coal duston the operating equipment
Ex mark perDirective 94/9/EG (ATEX)
Associa-tedequip-ment [ ]
Use outsidehazardous area,effective in Ex area
ANSI/ISA60079-0 [AEx ib] IIB
Equip-ment
Use withinhazardousarea
ANSI/ISA60079-0 AEx ib IIB T6
Flammablesubstances
Temporary behavior of theflammable substance in Exareas
Classification of thehazardous area
Gases,vapors,liquids
Permanently, for long periods,frequently
Zone 0
Occasionally Zone 1
Normally not, only for a shortperiod
Zone 2
Passive Components Energy Storing Devices Energy Sources*
Pt100 Capacitor Thermocouple
Switch Coil Photo cells
Distributionboxes
*RequirementsU 1 1.5 V; I 1 100 mA; P 1 25 mW
ResistorsValues must be exactly defined and consideredwhen determining overall system safety
Flammablesubstances
Temporary behavior offlammable substances
Classification of ha-zardous areas
Required marking for equipmentto be used per CENELEC
IEC 600079-0(starting fromEdition 5.0)
Device Group Category Equipm. Protect.Level (EPL)
Gases,vapors,liquids
Permanently, for longperiods, frequently
Zone 0 II 1G, (1)G Ga, [Ga]
Occasionally Zone 1 II 2G, (2)G Gb, [Gb]
Normally not, only fora short period
Zone 2 II 3G, (3)G Gc, [Gc]
Dust Permanently, for longperiods, frequently
Zone 20 II III (IEC 60079-0,startingfromEdition5.0)
1D, (1)D Da, [Da]
Occasionally Zone 21 II III (IEC 60079-0,startingfromEdition5.0)
2D, (2)D Db, [Db]
Normally not, only fora short period
Zone 22 II III (IEC 60079-0,startingfromEdition5.0)
3D, (3)D Dc, [Dc]
Methane,coal dust
Constantly Coal mining I M1 Ma
Methane,coal dust
Frequently Coal mining I M2 Mb
CENELECMarking
TypicalGas
Ignition Energy/µJ
III AII BII C
MethanePropaneEthyleneHydrogen
280> 18060 ... 180> 40
CENELECMarking
TypicalGas
Ignition Energy/µJ
III AII BII C
MethanePropaneEthyleneHydrogen
280> 18060 ... 180> 40
IEC 60079-0 (starting from Edition 5.0)CENELECMarking
Typical dusts
III AIII BIII C
Flammable lintNon-conducting dustConducting dust
US marking
Protection type for electrical equipmentin gas explosive hazardous areas
Protection principle Zone Standard Class/Zone Application
EN IEC UL
o Oil encapsulation Exclusion of the Ex atmosphere 1 or 2 EN 60079-6 IEC 60079-6 UL 60079-6
Class I, Zone 1
Transformers, starting resistors,switching devices
q Sand encapsulation Spark prevention 1 or 2 EN 60079-5 IEC 60079-5 UL 60079-5Transformers, relays,safety fuses, switches
mamb
Molded encapsulation Exclusion of the Ex atmosphere0, 1, 2
1, 2EN 60079-18 IEC 60079-18 UL 60079-18 Relays, sensors, solenoid valves
pxpypz
Pressure encapsulation Exclusion of the Ex atmosphere0, 1, 2
1, 22
EN 60079-2 IEC 60079-2 ISA 60079-2Class I,Div. 1/2
Switch and control cabinets
d Pressure-tight encapsulation Propagation prevention 1 or 2 EN 60079-1 IEC 60079-1 UL 60079-1Switch and command systems,heating equipment, lights
e Increased safety Spark prevention 1 or 2 EN 60079-7 IEC 60079-7 UL 60079-7 Class I, Zone 1 Junction and connection boxes, housings,terminal blocks
iaibic
Intrinsic safety Ignition energy limitation
0, 1, 2
1, 22
EN 60079-11 IEC 60079-11 UL 60079-11 Class I, Div. 1Measuring and control technology, sensors,actuators
EN 60079-25 IEC 60079-25 UL 60079-25 Intrinsically safe systems
EN 60079-27 IEC 60079-27 UL 60079-27 Intrinsically safe fieldbus systems (FISCO)
nA Non-sparking equipment Comparable with Ex e 2
EN 60079-15 IEC 60079-15 UL 60079-15 Class I, Zone 2 Approved for Zone 2nC Sparking equipment Comparable with Ex d 2
nR Vapor-proof equipment Protection by housing 2
op isop prop sh
Optical radiationIntrinsically safe
ProtectedLocked
12
3
EN 60079-28 IEC 60079-28 UL 60079-28 Optoelectronic devices
Protection type for electrical equipmentin areas with flammable dust
Protection principleZone Standard Class/Zone Application
EN IEC UL
tD Protection by housing Exclusion of the Ex atmosphere 21 or 22 EN 61241-1 IEC 61241-1 Class II, Div. 1 Junction and connection boxes, switchingdevices and switchgear units, lights
iaD, ibD Intrinsic safetyEnergy limitation of sparksand temperatures
20, 21 or 22 EN 61241-11 IEC 61241-11 UL 913 Class II, Div. 1Measuring and control technology, sensors,actuators
pD Pressure encapsulation Exclusion of the Ex atmosphere 21 or 22 EN 61241-4 IEC 61241-4 NFPA 496Class II, Div.1/2
Switch and control cabinets, motors
maD, mbD Molded encapsulation Exclusion of the Ex atmosphere 20, 21 or 22 EN 61241-18 IEC 61241-18Command, signaling and display devices,sensors
Protection Type
Category
1G Use in a defined area
(1)G Use outside hazardous area,effective up to the described area
Gas Conditions Group I
Methane Mines susceptible tofiredamp(coal mining)
150°C With deposits of coal dust onthe operating equipment
450°C Without deposits of coal duston the operating equipment
ID No. Notified Body/Official Testing Agency(Examples)
Country
0 04 4 TÜV Nord G erma ny
0102 P TB Germany
01 58 E XA M G er many
06 37 I BE xU Ge rm any
0 08 0 I NE RI S Fr an ce
0081 LC IE France
0 34 4 K EMA Nethe rlan ds
0402 SP Sweden
0163 LOM Spain
0 60 0 EECS (BA SEEFA ) U K
0518 SCS UK
www.wago.comPlease find additional information at
Ex Marking acc. to Standard (Example)
Dust Group
Gas Group / Ignition Energy Permissible Surface Temperature per IEC 505
Protection Type
Intrinsic Safety, Simple Electrical Equipment
Conditions in Ex Areas Ex Marking acc. to Standard
Gas Group / Ignition Energy
Conditions in Hazardous Areas, USA Permissible Surface Temperature per IEC 505 / NEC 500
Protection Type
0 8 8 8 - 0
1 4 5 / 0 0 0 6 - 3
6 0 1
E x - P o s t
e r 0 4 / 2 0 1 1 - 0
1 D E + G B
· P r i n t e d i n G e r m a n y
· S u b j e c t t o d e s i g n c h a n g e s
UL/FM
Group II
ATEX/IEC
Explosion Protection –
Real Progress in Safety
Class/Zone Categorization Class/Division Categorization
EC Type Examination Certificate Additional Conditions
T1=450°C
T2=300°C
T3=200°C
T4=135°C
T5=100°CT6= 85°C
T1=450°C
T2=300°C
T3=200°C
T4=135°C
T5=100°CT6= 85°C
T2A=280°CT2B=260°CT2C=230°CT2D=215°CT3A=180°CT3B=165°C
T4A=120°CT3C=160°C