5.52.624.01.01.00
7
Example of ATEX classification:
II
2
G
Ex
IIB
T4
Gb
CE-marking
European Union
explosion-proof operating material
II
device group / application
I
II
danger of mine damp
other areas prone to explosion
2
device category
1
2
3
for use in zone 0
for use in zone 1
for use in zone 2
G
EX atmosphere
G
D
...caused by gas, steam, fog
...caused by dust
Ex
Marking for EX-standards
for electrical devices of the EN 60079 series
IIB
explosion group II (gases)
IIA
IIB
IIC
limit gap widths (MESG) > 0,9 mm
limit gap widths (MESG)
≤ 0,9 to ≥ 0,5 mm
limit gap widths (MESG) < 0,5 mm
T4
Temperature class - gases
(for dust only the temperature in °C
is stated)
T1
T2
T3
T4
T5
T6
limit temperature 450 °C
limit temperature 300 °C
limit temperature 200 °C
limit temperature 135 °C
limit temperature 100 °C
limit temperature 85 °C
Gb
EPL (equipment protection level)
Ga
Gb
Gc
e.g. Group II (for gases, vapours, mist):
level of protection: very high (complies with zone 0)
level of protection: high (complies with zone 1)
level of protection: enhanced (complies with zone 2)
2.6.1
EX category
Gas
Dust
EX - Zone
1+2
21+22
Device category
2G + 3G
2D + 3D
Explosion Group
IIB
IIIA
Temperature class
T3
T4
T200°C
T135°C
DANGER!
The classification for the device can be found on the EX-type plate on the device. The devices must
only be used in the classification stated or in a lower classification.
2.6.2
Surface temperature of the devices
DANGER!
The temperature class mentioned on the EX-type plate on the unit must be observed, - make sure
that the max. surface temperature is even fallen short of.
DANGER!
The maximum surface temperature of the equipment must always be lower than the ignition
temperature of the gas/vapour/dust/air mixture. Equipment which has been classified in higher
temperature classes is, of course, also approved for use in applications with lower temperature
classes. As gas/air mixtures for T5 do not occur with normal use, and only very rarely occur for T6,
for specific gas/air mixtures such as carbon disulphide (IIC), our hoists are not rated for these
temperature classes and must not be used for these classes.
