A coupling arrangement for a line for transmitting high power electrical energy as well as for transmitting a pressurized fluid, the line having at least one fluid channel and at least one electrical conductor, consisting of a first and second coupling piece, in each case comprising at least one fluid channel and at least one electrical connecting element, wherein, in a coupled position of the first and second coupling piece, a liquid-tight connection of the fluid channels and an electrically conductive connection exists between the electrical connecting elements and, in a decoupled position of the first and second coupling piece, the fluid channels and the electrical connecting elements are separated from one another, wherein the coupling arrangement encompasses an intermediate position, which is provided between the coupled and decoupled position, in which the first and second coupling piece are connected to one another in a liquid-tight manner.