Different protection techniques are used to
address the hazardous zones :-
ZONES
|
||
Ex d
|
Flameproof
(Explosion proof) Enclosure
|
1, 2
|
Ex e
|
Increased
Safety
|
1, 2
|
Ex ia
|
Intrinsically
Safe
|
0, 1, 2
|
Ex ib
|
Intrinsically
Safe
|
1, 2
|
Ex o
|
Oil
Immersion
|
2
|
Ex p
|
Pressurized
Apparatus (Purged Apparatus)
|
1, 2
|
Ex q
|
Powder
Filling (Sand Filling)
|
2
|
Ex m
|
Encapsulation
|
1, 2
|
Ex n or
Ex N
|
Non
incentive or/and normally no sparking circuits
|
2
|
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