A coil device includes a coil part having a coil, a case accommodating the coil part, a coolant accommodated in the case, and a fluid volume adjusting part for supplying the coolant to the case or discharging the coolant from the case. The coil part floats on the coolant.

A tank assembly has heat-generating equipment contained therein. The tank assembly includes a heat pipe having an opening, wherein an interior of the heat pipe contains a liquid and a gas. The tank assembly further includes a tank fixed to the heat pipe and sealing the opening of the heat pipe. The tank houses at least one of a disconnector switch and a circuit breaker operatively connected to the disconnector switch. The sealing of the opening of the heat pipe prevents the liquid and the gas from entering the tank. The heat pipe extends beyond a side of the tank, and has a cooling portion.

A tank assembly has heat-generating equipment contained therein. The tank assembly includes a heat pipe having an opening, wherein an interior of the heat pipe contains a liquid and a gas. The tank assembly further includes a tank fixed to the heat pipe and sealing the opening of the heat pipe. The tank houses at least one of a disconnector switch and a circuit breaker operatively connected to the disconnector switch. The sealing of the opening of the heat pipe prevents the liquid and the gas from entering the tank. The heat pipe extends beyond a side of the tank, and has a cooling portion.

An inductor includes a printed wiring board (PWB) and a plurality of electrically-conductive heat pipes operatively connected to the PWB. The PWB includes electrically conductive traces electrically connected to the plurality of electrically-conductive heat pipes. The traces and plurality of electrically conductive heat pipes form an inductor winding. A method of manufacturing an inductor includes mounting a plurality of electrically conductive heat pipes to a printed wiring board (PWB), wherein the PWB includes electrically conductive traces to connect the plurality of electrically-conductive heat pipes to form an inductor winding.

An inductor includes a printed wiring board (PWB) and a plurality of electrically-conductive heat pipes operatively connected to the PWB. The PWB includes electrically conductive traces electrically connected to the plurality of electrically-conductive heat pipes. The traces and plurality of electrically conductive heat pipes form an inductor winding. A method of manufacturing an inductor includes mounting a plurality of electrically conductive heat pipes to a printed wiring board (PWB), wherein the PWB includes electrically conductive traces to connect the plurality of electrically-conductive heat pipes to form an inductor winding.

The present invention relates to an electrical device comprising a gas-insulated transformer or reactor. The electrical device comprises a housing enclosing an interior space, at least a portion of which defining an insulation space containing a dielectric insulation fluid comprising an organofluorine compound, and an electrical component being arranged in the insulation space and being surrounded by the insulation fluid. The electrical component comprises at least one winding. The electrical device further comprises an electrical connector for bringing the apparatus from non-operational state to operational state by connecting at least one winding to a power grid. The device further comprises an auxiliary power source which is connectable to at least one winding when the apparatus is in the non-operational state.

The present invention relates to an electrical device comprising a gas-insulated transformer or reactor. The electrical device comprises a housing enclosing an interior space, at least a portion of which defining an insulation space containing a dielectric insulation fluid comprising an organofluorine compound, and an electrical component being arranged in the insulation space and being surrounded by the insulation fluid. The electrical component comprises at least one winding. The electrical device further comprises an electrical connector for bringing the apparatus from non-operational state to operational state by connecting at least one winding to a power grid. The device further comprises an auxiliary power source which is connectable to at least one winding when the apparatus is in the non-operational state.

An underground modular transformation centre that is resistant to disasters and adverse conditions, having a transformer without fins. The tank has electrical connection outlets in the lower lateral zones. This tank is also provided with piping in which holes are drilled, positioned in diametrically opposing points inside the tank, and threading on the external part thereof protruding from the tank. Also provided are threaded casings on the lateral panel of the tank in order to accommodate temperature detectors.

In one aspect, a medium voltage power converter includes a plurality of slices each having: a transformer including a plurality of primary windings to couple to a utility source of input power and a plurality of secondary windings; and a plurality of power cubes coupled to the plurality of secondary windings, each of the plurality of power cubes comprising a low frequency front end stage, a DC link, and a high frequency silicon carbide (SiC) inverter stage to couple to a high frequency load or to a high speed machine.

A tank assembly has heat-generating equipment contained therein. The tank assembly includes a heat pipe having an opening, wherein an interior of the heat pipe contains a liquid and a gas. The tank assembly further includes a tank fixed to the heat pipe and sealing the opening of the heat pipe. The tank houses at least one of a disconnector switch and a circuit breaker operatively connected to the disconnector switch. The sealing of the opening of the heat pipe prevents the liquid and the gas from entering the tank. The heat pipe extends beyond a side of the tank, and has a cooling portion.