Glossary

Equipment category

Classification of equipment depending on the required degree of protection. (Zones) G = Gas atmosphere 1G = Zone 0, Zone 1, Zone 2 suitable 2G = Zone 1 , Zone 2 suitable 3G = Zone 2 suitable D = Dust atmosphere 1D = Zone 20, Zone 21, Zone 22 suitable 2D = Zone 21, Zone 22 suitable 3D = Zone 22 (does not apply to conductive dusts)

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