We Claim:
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1. An electric device (1), comprising a functional part (3), a tank (4) and a cable box (6) connected to the tank (4), the tank (4) and the cable box (6) being filled with an insulating liquid (5), the functional part (3) being positioned in the tank (4), an electric connection system (27) for connecting a power cable (2) through the cable box (6) to the functional part in
the tank (4)
and a current measuring device (14) for measuring electric current in the electric connection system (27), wherein the cable box (6) comprises a housing (8), wherein the current measuring device (14) is located adjacent to the housing (8) of the cable box (6), wherein the cable box (6) comprises a pocket (15) and an electrically conductive grounded shield (17), wherein the pocket (15) is delimited at least partially by the electrically conductive grounded shield (17) located in the
cable box (6),
wherein the current measuring device (14) is located in the pocket (15), wherein the shield (17) is arranged circumferentially around a portion of the electric connection system (27) and a portion of the insulating liquid (5) and is positioned between the portion of the electric connection system (27) and the current measuring device (14) in a direction radially outwards from the portion of the electric connection system (27), wherein the shield (17) is mechanically and electrically connected to the housing (8) or integrally formed with the housing (8).
2. The electric device (1) of claim 1, wherein the current measuring device (14) is immersed in the insulating liquid
(5) .
3. The electric device (1) of any of the preceding claims, wherein the current measuring device (14) is located in an interface region (18) of the cable box (6), adjacent to an interface to the tank (4) .
4. The electric device (1) of any of the preceding claims, wherein the current measuring device (14) is located in a lead-in region of the cable box (6) adjacent to a location where the power cable (2) is connected to the cable box (6).
5. The electric device (1) of any of the preceding claims, wherein the volume of the cable box (6) is separated from the volume of the tank (4) by an insulating barrier (9) formed as a wall.
6. The electric device of any of the preceding claims, being a transformer or a reactor.
7. The electric device of any of the preceding claims, wherein the cable box (6) is located on a lower part of the tank (4) where the temperature during operation is lower than at a top part of the tank (4).
8. A use of the electric device (1) of any of the preceding claims in an offshore wind power collecting and/or distributing station.