Cooling device for electrical cabinet for explosive environments, has welded sealed housing containing components not certified for explosive environments, and second housing for certified components

摘要

The device (10) is joined to the cabinet (100) wall by a flange to form a gas- and dust-tight unit with a through opening in the attachment area. A sealed welded first housing (11) for components of the cooling device that are not certified for use in explosive environments has a hot air inlet opening with a non-return flap and a cold air outlet opening in the housing wall and a peripheral flange for a seal. A second housing (30) contains certified components.