Category 3G for zone 2

Category 3G for zone 2

Zone 2 is defined as where no explosive atmosphere is present, or might only rarely occur. Fans of at least category 3G must be used for Zone 2. This is often the case for solvent-laden exhaust air or in the vicinity of a Zone 1.

Fans for Zone 2 must not contain any sources of ignition in normal operation. Internal and similar minimum distances and material pairings must be observed internally. The drive motor must be equipped with at least Ex nA-motors of category 3G.