9 – Pvd3675_Gb_Ey_Septembre_2017
1.2.3.2. ATEX/IECEx dusty atmospheres
II 3 GD Ex nA IIC T3 Gc IP65 / Ex tc IIIC T200°C Dc IP65
I Mines
Very high
level of
D Combustible dust
ATEX protection
ta
Protection by
enclosure
III Dust
A
flying
T1 450 °C
Very high
level of
IP65
protection
tb / tc
Protection by
enclosure
T2 300 °C
Mb
protection
II Surface
Very high
level of
pb / pc
Pressurized
enclosure
B
Non
conductive
dust
T3 200 °C
Very high
level of
protection
ia / ib / ic
Intrinsic safety
T4 135 °C
Db
protection
3
of protection
ma / mb / mc
Encapsulation
C
Conductive
dust
T5 100 °C
Dc
of protection
T6 85 °C
Suitable for ATEX/IECEX servomotors
1.2.4. Special conditions for the ATEX/IECEx servomotors
The EC certifications are marked with a X. It seems the using of the
motor must be in accordance with special conditions explained below:
In case of fail of a screw used to assemble the parts of
new part must have a quality class superior or equal to 8.8.
In case of an using in dusty explosive atmospheres, the user
must perform regular cleaning operations on the motor to avoid