Intrinsic Safety and !he ATEX Directive

The ATEX markings are in addition to the

standard Zone markings and indicate compliance to the new directives,

European requlrements centered around the safety 01 hazardous area eqUlpment that became mandatory on July 1, 2003. AII equipment exported nto European member countries must meet the ATEX hazardous and essential health and salety requirements for acceptance. 94/9JEC

I EX = Explosim I I = Mlning industry protection 11 = St.riace Industry Apparatus Group

M1 = Present continuously - equipment cannot be

de-energized (mining)

M2 = Present conti1uously - equipment can be de-energized (mining)

1 = Hazard present continuously 2 = Hazard present

10 to 100 hrslannum

3 ~- Hazard present less than

10 to 100 hrsl!mUm

(.,) = Mounted in safe area No Parentheses = Mounted in

hazardous area

Category

Hazardoos Locations Are Grouped According To Their Ignition Properties,

TYPICALGAS

Acelylene Hydrogen Ethylene Propane Methane' MetalOust Coal Dust Graln DuS! Fibers

G=Gas

D = Dus!

lEC GAS

GROUP lIe

118 + H, IIB IIA I

NORTH AMERICAN

GROUP A 8 C O

E F G

MINIIIUM IGNlnON ENERGY

20 ~J 20 ~J 60~ 100 ~J

I Mtning apphcatlOn under Junsdlctlon 01 MSHA

CENELEC & North American Marking (Zone)

CI< ss I = GasNapor Cl!ss 11 = Oust Cl;ss 111 = Fiber or flying

(No group

designation)

DIv. 1 = Il)'litable mix1ure present

oontinuously or i1terrnit1ently

DIv. 2 = Ignitable mixture is not norrnally

present

TYptCALGAS

A = Acetylene B = Hydrogen C = EtIlylene D = Propane

T1 .. 45QC

T2 .. 3OQC

T2 A ,,280"C

T2 B ,,26O"C

T2 C ,,23O"C

T2D s215C

T3 s200C

T3 A .. 18O"C

T3 B " 165C

T3 C .. 1SOOC T4 ,,1asoC

T4 A s 12O"C

T5 " l00"C T6 s85C

elass 1, Division 1, Groups A, B, e, D, T5

Intrinsic Safety and elass 1, Zone 1, A E x d [ia] lIe T5

North American Marking (Oivision) the ATEX Oirective Marking

CIlla I = GasNapor CIass 11 = Dust CIass 111 = Fiber Of flyi1g

(No group designation)

Zone O ~. Ignitable conoentrations of gases or vapors are present connuousy or

lar long periods of time

Zone 1 = 1\)'litabIe concentrations 01 gases or vapors are ~keIy lo exisl under normal operaIing conditions

Zone 2 ~ 19ltabIe concernIions

E = lo CENELEC Staldards

A = 10 American Stardards

Ex=ExpIosfor1 protection

m = Encapsulation (Zone 1) d = Aameproot (Zone 1)

e = Increased sety (Zone 1)

ia = Intnnsic safety (Zone O) lID = h1rinsic safeIy dusI (Zone 20)

r----1 lb = Intnnsic safeIy (Zone 1) o = 0iI irMIersion (lone 1) q = Powder filing (lone 1)

P = Pressunzed and purgad (lone 1)

nA = Nonspar1 0.90 mm, MIC>O.80~

TI :s 45O"C

T2 ,,3OO"C

T3 s2OO"C

T4 s 135"C

T5 s 100C

T6 s 85C

US (MEC 500), C8nada (cee _,lB) MarIng

of gases or vapors are not likely to occur under normal condrtions and ff they do. only for short periods nC = SparI 2.5 mm or small sol id bodies

4 Protection against contact by tools, wires, objects > 1 mm or small solid bodies

5 Complete protection against con1act. I ngress 01 dust not in harmlul quantities

6 Complete protection against contact Protec1ion against Ingress 01 dust

NEMA Rating

1

2

3

3R

3S

4 &4X

6&6P

12 & 12K

13

Protection Against I ngress 01 Liquids

O No protection

1 Protection against drops 01 con den sed water (i.e., no harmful ellect)

2 Protection against liquid drops at 150 from vertical

3 Protection against rain up to 60 from vertical

4 Protection against splashing from any direclion

5 Protection against waler jets lrom any direction under stated conditions

6 Protection against heavy sea water under stated condtons

7 Protection against water immersion under stated condltlons 01 pressure and time

8 Protection against indelinite immersion in water under specified pressure

lEC Classification

tP 10

IP 11

tP 54

IP 14

IP54

IP 56

tP67

IP 52

tP 54

Comparisol1 based on tests per lEC 60 529. Cannot be used to convert lEC classifications to NEMA type numbers

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Subject to modificatlons 0 2006 Pepper1+Fuchs:ll lnc., TWlnsburg, Ohlo ISP 0806 (909925, supercedes 90773n Prin1ed in U.$.A.