5 Description
With a view to the selection of materials, the EX fans full the requirements of Standard DIN EN 14986 (Construction of
fans for use in explosion-capable areas) as a result of specic protective measures in the area of possible contact sur-
faces between rotating and stationary components (rotor/admission nozzle)
5.1 Identication
Example
0820 II 2G c Ex e IIB T3 Gb Sira 07ATEX6341X
CE sign
0820 Notied ofce (quality assurance system)
Device certied for Ex area
II Device group (here: use above ground)
2G Device category and classication (G = gas, D = dust)
c
Ex e
Kind of ignition protection „c“ = constructive safety (not electric)
Kind of ignition protection („d“ = pressure-proof encapsulation, „e“ increased safety, „nA“ =
not sparking)
IIB Groups
T3 Temperature class
Gb EPL (Equipment Protection Level)
Sira 07ATEX6341X EC type test certicate number
Table 1: Identication
Designation
Device group II All areas with explosive atmosphere except mining industrie under-
ground and on the surface at mine gases.
Device category/
classication
„2G“ 2 Category 2 / zone 1 / high safety Devices of this category are inten-
ded for use in areas in which it can be expected that an explosion-
capable atmosphere of gases, vapours, mists occasionally occurs.
„3G“ 3 Category 3 / zone 2 / normal safety / Devices of this category are
intended for use in areas in which it cannot be expected that an
explosion-capable atmosphere occurs as a result of gases, vapours,
mists, but if it does occur, then in all probability only rarely and for a
short period of time.
G Gases/vapours/mists
Table 2: Identication
44
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