| 摘要 |
<p>A corona test set has at least a reactor (42) and power separation filter (60) of a high voltage circuit placed in an oil-filled conductive tank (10). The exciter may also be placed in the same tank enclosure which is of much smaller size than the equivalent voltage rating test set in air. High voltage taken from the circuit passes out of the tank through high voltage bushings. A preferred form of bushing is a quick coupling cable-receiving device having an insulator (34) extending into the tank and a frusto-conical metallic extension (30) extending away from the tank with a tubular internal wall (110) connected to these respective parts at opposite ends to form a further oil-filled compartment separate from the tank. Clamping and sealing means can be provided to hold a terminated cable in position so that demineralized and deionized water can be circulated through the entire space between the cable itself and the internal wall of the oil-filled bushing compartment. <IMAGE></p> |
