Patent attributes
An inspection or maintenance system is provided comprising an electrical interface, wherein the inspection or maintenance system comprises an inspection or maintenance unit and an external unit, which can be coupled to the inspection or maintenance unit electrically. The inspection or maintenance unit comprises a housing and the housing has a first electrically conducting portion and at least a second electrically conducting portion. The electrically conducting portions are electrically isolated from each other, the external unit comprises a first electrical contact and at least a second electrical contact, wherein the electrically conducting portions and the electrical contacts are configured such that the first electrical contact can be brought into electrical contact with the first electrically conducting portion and the at least one second electrical contact can be brought into electrical contact with the at least one second electrically conducting portion.