WEG W22 Premium E3 Manual De Instalación, Operación Y Mantenimiento página 76

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Class
Class I
Class II
Class I
Class II
Class II
Class I
* Other temperature classes are available upon request.
Apparatus Equipment
grouping category
3
2
II
3
2
I 2
* Other temperature classes are available upon request.
76 Manual of Electric Motors
Marking according to NEC
Division or Zone
Div. 1
Div. 1
Zona 1
Zona 21
Zona 22
Div. 2
Marking according to ATEX
Gas, dust or
Ex equipment
mine
G
Ex
D
M
Apparatus grouping
for gas or dust
Gr. C and D
Gr. E, F and G
IIB
IIIC
IIIB
Gr. A, B, C and D
Apparatus
Type of
grouping for
protection
gas or dust
nA II
e II
IIB
d
IIC
IIB
de
IIC
tc IIIB
tb IIIC
d I
Temperature class
T4
T4
T4
T125 °C
T125 °C
T3
Equipment
Temperature
Protection
class
Level (EPL)
T3 Gc
T3
Gb
T4
Dc
T125 °C
Db
T4 Mb