JUMO SafetyM STB Notice De Mise En Service page 80

II (2) G [Ex eb Gb] IIC
II (1) D [Ex ta Da] IIIC
II (2) D [Ex tb Db] IIIC
II (1) (2) (3) G [Ex eb Gb] IIC
II (1) (1) (3) D [Ex ta Da] IIIC
II (1) (2) (3) D [Ex tb Db] IIIC
Equipment Protection Level:
Gb: for use in zone 1 or 2 for gases
Da: for use in zone 20, 21 or 22 for dust
Db: for use in zone 21 or 22 for dust
Standard series designation according to EN 50495
"eb" increased safety for category 2,
"ta" protection with housing for category 1, a: zone 20, 21 or 22 for dust
"tb" protection with housing for category 2, b: zone 21 or 22 for dust
Standard series designation according to EN 60079 for electrical devices
ignition protection "e" increased safety according to EN 60079-7
ignition protection "t" dust explosion protect. with housing accord. to EN 60079-31
Standard designation
Category according to ATEX directive 2014/34/EU
G: explosive atmosphere consisting of gas, vapor or mist
D: explosive atmosphere consisting of dust
Safety devices according to EN 50495
- for category 2 applications for ignition protection type increased safety „e" accord. EN 60079-7
- for category 1 applications for ignition protection type by housing „ta" accord. EN 60079-31
- for category 2 applications for ignition protection type by housing „tb" accord. EN 60079-31
Guidelines designation for device group II (non-firedamp endangered mine workings)
Designation explosionproof device according to ATEX directive 2014/34/EU
1.) The monitored electrical equipment does not represent a potential ignition source during normal operation
suivant EN 50495 et EN 60079-7
suivant EN 50495 et EN 60079-31
Standard designation according to EN 60079-0
Explosion group II C gases, low ignition energy such as hydrogen
III C conductive dusts
b: zone 1 or 2 for gas
1)
7 ATEX
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