A PROTECTIVE DEVICE FOR SHIELDING AN ELECTRICAL APPARATUS AGAINST ENVIRONMENTAL CONDITIONS

摘要

A protective device for shielding an electrical component part during its operation comprises a protective cover (2, 12) preformed of a film-like material in such a way that the preforming conforms to the topography of said component part in predetermined respects, said protective cover being designed so as to envelope said component part substantially from all sides. The basic part of the protective cover is a thin but rigid plastic film (15) formed by deep drawing, blowing, pressing or rolling. A joining structure (4a, 4b) on the edges of the protective cover parts mechanically locks the parts to each other. Gaps on the protective cover enable contacts through it (9, 10). EMC shielding is provided by a metal plating (16) on the protective cover, said plating having gaps to provide visual connections between the part to be protected and its environment. The metal plating may comprise multiple layers which may be separated by intermediate layers. The protective cover may have a perforation (22) along which it can be torn open. Protective covers are manufactured in the form of a long tape with joining necks (13) connecting adjacent parts.