Designation
Kind of ignition
protection
„c“
Constructive
safety
DIN EN 13463-5
„d“
Pessureproof
encapsulation
Ex d
DIN EN 60079-1
„e“
increased
safety
Ex e
DIN EN 60079-7
Production of sparks, light arcs or inadmissible temperatures which
could act as a source of ignition is prevented by additional measures
and an increased degree of safety.
Non-sparking
equipment
Ex nA
DIN EN 60079-15
Explosion-capable mixtures can penetrate into the housing of the
operating equipment, but may not be ignited. Sparks and ignition-
capable temperatures must be avoided.
Group
Group II
IIA
IIB
IIC
z. B. Propane ...
z. B. Ethylene ...
z. B. Hydrogen ...
Temperature
class
T1
T2
T3
T4
450 °C
300 °C
200 °C
135 °C
I: Methane
IIA: Acetone, Ammoniac, Methane, Methanol, Propane, Toluene
IIB: Town gas
IIC: Hydrogen
IIA: Ethyl alcohol, n-Butane
IIB: Ethylene
IIC: Acetylene
IIA: Otto fuels, Diesel fuels, fuel oils
IIB: Hydrogen sulphide
IIA: Acetaldehyde, ethyl ether
Table 2:
Identification
5.2
Certification according to ATEX directive 2014/34/EU
EC type test certification
Types
Certification number
Identification
Kind of ignition
protection
AW-EX
ZELM 05 ATEX0279X
II 2G c Ex e IIB T4
c, Ex e
AXCBF-EX
Sira 07 ATEX 6341X
II 2G c T*
Tu = -20°C ... max. 60°C
(T* is equal to temperature classification of the
motor)
c, Ex e, Ex d, Ex nA
AXC-EX
RVK-EX
ZELM 03 ATEX0198X
II 2G c Ex e IIB T3
c, Ex e
DVEX
SP07ATEX31..X
II 2G c Ex e IIB T3
c, Ex e
Table 3:
EX identification
Description
45
