| 摘要 |
A current transformer has a hollow tube made from an electrical conductor which is bent at its center so as to form a loop which functions as a primary winding and two parallel straight portions at the ends of the tube which function as leads for the primary winding. The tube has a longitudinally-extending fluid-carrying passageway for a dielectric fluid formed at its center. Both ends of the tube are open and communicate with the inside of a reservoir for a dielectric fluid. A longitudinally-extending electrically-insulating member is inserted into the fluid-carrying passageway of one of the straight portions of the tube so as to decrease the cross-sectional area of the passageway in that portion and increase its resistance to flow. The increase in flow resistance produces a temperature difference within the tube, promoting circulation of the dielectric fluid by convection. |
