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    • 7. 发明授权
    • High voltage apparatus
    • 高压设备
    • US4963819A
    • 1990-10-16
    • US251050
    • 1988-09-26
    • Graham J. ClarkeGordon E. HibbertHelge JensenRobin J. T. Clabburn
    • Graham J. ClarkeGordon E. HibbertHelge JensenRobin J. T. Clabburn
    • G01R15/16
    • G01R15/16
    • The invention provides a high voltage capacitor suitable for measuring the voltage of an overhead power line. The capacitor dielectric is mounted directly on to the power line conductor, which serves as one electrode of the capacitor. The other electrode of the capacitor is mounted on to the outer surface of the dielectric, and is protected at each side by a guard ring. Stress control is provided between the outer capacitor electrode and the guard rings and also at the outer edges of the guard rings. The capacitor may be enclosed in an earthed housing, which can contain one or more current transformers. The apparatus can be used for fault detection and location, and may be used in combination with a power cable or a switch.
    • 本发明提供了适用于测量架空电力线的电压的高压电容器。 电容器电介质直接安装在作为电容器的一个电极的电力线导体上。 电容器的另一个电极安装在电介质的外表面上,并在每一侧被保护环保护。 在外部电容器电极和保护环之间以及保护环的外边缘处提供应力控制。 电容器可以封闭在可以包含一个或多个电流互感器的接地壳体中。 该装置可用于故障检测和定位,并可与电力电缆或开关组合使用。
    • 9. 发明授权
    • Composite electrical insulator and method of forming same
    • 复合电绝缘子及其形成方法
    • US4845318A
    • 1989-07-04
    • US158065
    • 1988-02-12
    • Robin J. T. ClabburnJohn S. T. Looms
    • Robin J. T. ClabburnJohn S. T. Looms
    • H01B17/00G02B6/44H01B17/32H01B19/00H02G15/02H02G15/184
    • G02B6/442H01B17/32Y10T29/49227
    • The invention provides an electrical insulator comprising a cylindrical core (2) of an insulating refractory material, such as porcelain, onto a portion of the curved surface of which a sleeve (8) of insulating polymeric material is fitted. Metal end-caps (4), for electrically connecting the insulator, are fitted to the ends of the porcelain core such that there is an exposed portion (10) of the curved surface of the core between the sleeve and each end-cap. Thus, any damaging electrical activity which takes place at the metal end-caps is directed primarily onto the surface of the porcelain core (2), and not onto the surface of the electrically vulnerable polymeric sleeve (8), which serves to protect mechanically the relatively brittle porcelain core. Optionally, the polymeric sleeve (8) may have a convoluted or a shedded outer surface (12) to increase the leakage path length of the insulator, or to prevent the formation of a continuous moisture path, or both.
    • 本发明提供了一种电绝缘体,其包括绝缘耐火材料(例如瓷器)的圆柱形芯(2),其在弯曲表面的一部分上安装有绝缘聚合物材料的套筒(8)。 用于电连接绝缘体的金属端盖(4)装配到瓷芯的端部,使得在套筒和每个端盖之间存在芯的弯曲表面的暴露部分(10)。 因此,在金属端盖处发生的任何有害的电活动主要指向瓷芯(2)的表面,而不是指向电气易损的聚合物套筒(8)的表面,其用于机械地保护 比较脆的瓷芯。 可选地,聚合物套筒(8)可以具有回旋或脱落的外表面(12),以增加绝缘体的泄漏路径长度,或防止形成连续的湿气路径,或两者。