Protection mode
II
product group
3
product category
Gas: II 3G Ex mc ec nC IIA T... Gc X
G
explosive atmosphere with gas or vapours
Ex
suitable for explosive atmosphere
mc
encapsulated for zone 2
ec
increased safety
nC
sealed device for zone 2
IIA
explosion group
T...
temperature class (T4 < 135 °C) - (T5 < 100 °C) - (T6 < 85 °C)
Gc
Product Level (EPL) - equipment for use in explosive atmospheres due to the presence of gas, with an "increased"
level of protection, which is not a source of ignition during normal operation and which has some additional
protective measures to ensure that it remains an inactive source of ignition in case of events expected regularly
X
particular conditions of use (*)
Dust: II 3D Ex mc tc IIIC T...°C Dc X
D
explosive atmosphere with dust
Ex
suitable for explosive atmosphere
mc
encapsulated for zone 22
tc
protection by enclosure for zone 22
IIIC
explosion group
T...
temperature class expressed in °C
Dc
Product Level (EPL) - equipment for use in explosive atmospheres due to the presence of dust, with an "increased"
level of protection, which is not a source of ignition during normal operation and which has some additional
protective measures to ensure that it remains an inactive source of ignition in case of events expected regularly
X
particular conditions of use (*)
* see paragraph 3.2 - "Special conditions for safe use"
JW...-1
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Madas Technical Manual - 1|1.3J - REV. 0 of 1
Aug 2019
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