ATEX 2G/3G and 2D/3D Product specification: ATEX fans for housing/built-in version. Manufactured in conformity with ATEX 94/9 EC and tested for use in zones 1 and 2 plus 21/22. Oil and petrochemicals industry Plant and manufacturing systems engineering Ignition protection types for special Ex motors De: version in explosion-proof housing The housing can resist the pressure of an explosion and prevents the force of the explosion being transferred outwards. E: Increased safety Avoid sparks or electric arcs close to internal or external parts. nA: non-sparking operating equipment Does not ignite in ambient explosive atmospheres in normal operation and under defined abnormal operating conditions. td: Protection provided by housing Max. surface temperature and the ingress of dust are restricted. Properties & special features: Surface finish: electrically conductive Special sealed versions to separate the different zones. From 2 x shaft seal through to carbon labyrinth seal incl. sealing gas connection. Different versions for zone 1 and 2 or 21/22 Fans for explosion groups IIa, IIb and IIC hydrogen