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4
Unit structure
Identification of explosion-protected drives
Operating Instructions – Explosion-Protected MOVI-SWITCH
®
Drives
18
Example 2: Operating resources in protection type t for dust explosion protection
provided by the enclosure: II 3D Ex tc IIIC T120 °C Dc
Example 1
Example 2
Meaning
Designation ac-
cording to EU Di-
rective
CE marking
0102
Identification number of the notified body (here: PTB),
only for category 2
Explosion protection mark
II
Equipment group
2
3
Equipment category
G
D
•
G for areas containing potentially explosive mixtures
of gas, steam, fog, and air.
•
D for areas where dust may create potentially explos-
ive atmospheres.
Ex
Designation ac-
cording to standard
Symbol indicating that the equipment complies with one
or more protection types.
eb
tc
Information on protection type/protection level
•
eb: Increased safety
•
tc: Protection by enclosure
IIC
IIIC
Information on:
•
IIC: Gas group
•
IIIC: Dust group
T3
T120 °C
T3: Temperature class
T120 °C: Maximum surface temperature in degrees
Celsius
Gb
Dc
Equipment protection level (EPL)
25988670/EN – 04/2020