Electrical apparatus for the generation, transmission, distribution and/or usage of electrical energy and method for recovering a substance from an insulation medium of such an apparatus

Electrical apparatus for generation, transmission, distribution and/or usage of electrical energy, the electrical apparatus comprising housing enclosing an electrical apparatus interior space, at least a portion of said electrical apparatus interior space comprising at least one insulation space, in which an electrical component is arranged and which contains an insulation medium surrounding the electrical component, the insulation medium comprising an organofluorine compound and at least one further component in gaseous phase,

• the electrical apparatus further comprising a gas flow generating device designed to generate a flow of an initial gas mixture through an outlet opening arranged in the housing out of the insulation space, the initial gas mixture containing the organofluorine compound and the at least one further component of the insulation medium,
• wherein downstream of the outlet opening a substance recovery device is arranged, the substance recovery device comprising a separator for separating the organofluorine compound from the at least one further component of the initial gas mixture, said separator being or comprising a liquefaction device adapted for liquefying and/or a solidification device adapted for solidifying the organofluorine compound,
• the apparatus further comprising an organofluorine compound recycling channel leading from the substance recovery device to an organofluorine compound inlet opening arranged in the housing and designed such to reintroduce the organofluorine compound into the insulation space,
• wherein upstream of the organofluorine compound inlet opening an organofluorine compound treatment device is arranged for removing impurities from the organofluorine compound to be reintroduced into the insulation space.