1.1 This European Standard specifies the constructional requirements for fans constructed to Group II G (of explosion groups IIA, IIB and hydrogen) categories 1, 2 and 3, and Group II D categories 2 and 3, intended for use in explosive atmospheres.NOTE Operation conditions for the different categories of fans used in this European Standard are defined in Clause 4.1.2 This European Standard does not apply to group I fans (fans for mining), cooling fans or impellers on rotating electrical machines, cooling fans or impellers on internal combustion engines.NOTE 1 Requirements for group I fans are given in EN 1710.NOTE 2 The requirements for electrical parts are
DS/EN 14986:2007 history
2007DS/EN 14986:2007 Design of fans working in potentially explosive atmospheres