M&C TechGroup MP47 Ex Operator's manual - Handbuch (Seite 86)

KNF Motor M 56 Ex Use
Translation of orignal Operating and Installation Instructions, english, KNF 121220-121648 01/13 6
2.4.5. Types of protection
Marking Description
d Flameproof enclosure
e Increased safety
i Intrinsic safety
p Pressurization
m Encapsulation
o Oil
immersion
q Sand filling
nA Non sparking
nC Several meanings
nR Vapor proof housing
nL Energy-limited
(varies between North America and Europe)
nP Simplified pressurization
Tab. 7
2.4.6. Equipment protection level
Marking Description
Ga Device with a “very high” protection level
Gb Device with a “high” protection level
Gc Device with “extended” protection level
Tab. 8