Parker EX Series, Техническое руководство

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– Pvd3665_Gb_Ex_August 2022
1.2.4.2. EX ATEX/IECEx gazeous or dusty atmospheres
II 2 GD Ex db IIB T4 Gb IP65 / Ex tb IIIC T135°C Db IP65
Suitable for ATEX/IECEX servomotors
1.2.5. Special conditions for the ATEX 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 the flameproof
enclosure, the new part must have a quality class superior or equal to
8.8 for EX3-EX4-EX6 and superior or equal to 12.9 for EX8.
In case of an using in dusty explosive atmospheres, the user
must perform regular cleaning operations on the motor to avoid
dust deposits.
II 2 D Ex tb III C T135 °C Db IP65
I
M
ine
s
M1
Very high
level of
protection
D
Combu
stib
le
d
u
st
A
TEX
p
ro
te
ctio
n
ta
Protection by
enclosure
III
Dust
A
Combustible
flying
T1 450 °C
Ma
Very high
level of
protection
IP65
M2
High level of
protection
tb / tc
Protection by
enclosure
T2 300 °C
Mb
High level of
protection
II
S
u
rf
ac
e
1
Very high
level of
protection
pb / pc
Pressurized
enclosure
B
Non
conductive
dust
T3 200 °C
Da
Very high
level of
protection
2
High level of
protection
ia / ib / ic
Intrinsic safety
T4 135 °C
Db
High level of
protection
3
Normal level
of protection
ma / mb / mc
Encapsulation
C
Conductive
dust
T5 100 °C
Dc
Normal level
of protection
T6 85 °C