ENS0310 is the electromagnetic compatibility requirement applied to the off-highway machinery of the group that builds agricultural and construction equipment under several brand names, and it appears on this site under both the group designator and the corporate name of one of its brands, since the same document is cited in the specifications of the different product lines. The requirements it states reflect the working conditions of the machinery rather than those of a road vehicle: the machine operates in a field or on a site where other equipment and welding plant are nearby, it carries mobile radio equipment used to coordinate the work, and it runs for long periods with the engine and the hydraulics under load so that the disturbance generated by the machine itself is continuous rather than intermittent. Immunity is therefore emphasised, at levels appropriate to that environment. The document is applied alongside the European off-highway EMC standard.