5
Description
With a view to the selection of materials, the EX fans fulfil the requirements of Standard DIN EN 14986 (Construction of
fans for use in explosion-capable areas) as a result of specific protective measures in the area of possible contact sur
-
faces between rotating and stationary components (rotor/admission nozzle)
5.1
Identification
Example
0820
II 2G c Ex e IIB T3 Gb Sira 07ATEX6341X
CE sign
0820
Notified office (quality assurance system)
Device certified for Ex area
II
Device group (here: use above ground)
2G
Device category and classification (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 certificate number
Table 1:
Identification
Designation
Device group
II
All areas with explosive atmosphere except mining industrie under-
ground and on the surface at mine gases.
Device category/
classification
„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:
Identification
Description
44
