Electrostatic coalescing device

The invention relates to an electrical appliance comprising one or several sheet-shaped electrodes (1) and a connecting device (30) for electrically connecting said one or several electrodes to a voltage source. The connecting device comprises a casing (31) having two or more tubular casing parts (32), each of which enclosing a channel filled with a dielectric medium, and an elongated conductor for feeding electric power from the voltage source to said one or several electrodes. The conductor extends through the channels of said casing parts and is surrounded by the dielectric medium therein. The conductor extends through a hole in an electrically conductive member of each individual electrode. The conductor is electrically connected to the conductive members of the electrodes and each individual electrode has a part (4) arranged between two of said casing parts (32) with the two casing parts clamped against opposite sides of the intermediate electrode part.