公开(公告)号：EP0172634B1

公开(公告)日：1989-12-13

申请号：EP85304698.5

申请日：1985-07-01

申请人： RAYCHEM LIMITED

发明人： Clarke, Graham James ,  Hibbert, Gordon Edward ,  Clabburn, Robin James Thomas ,  Jensen, Helge

IPC分类号： G01R15/06

CPC分类号： G01R15/16

公开(公告)号：EP0172634A1

公开(公告)日：1986-02-26

申请号：EP85304698.5

申请日：1985-07-01

申请人： RAYCHEM LIMITED

发明人： Clarke, Graham James ,  Hibbert, Gordon Edward ,  Clabburn, Robin James Thomas ,  Jensen, Helge

IPC分类号： G01R15/06

CPC分类号： G01R15/16

摘要： The invention provides a high voltage capacitor suitable for measuring the voltage of an overhead power line. The capacitor dielectric (16B) is mounted directly on to the power line conductor (2), which serves as one electrode of the capacitor. The other electrode (18) of the capacitor is mounted on to the outer surface of the dielectric (16B), and is protected at each side by a guard ring (20). Stress control (22, 24) is provided between the outer capacitor electrode (18) and the guard rings (20) and also at the outer edges of the guard rings (20). The capacitor may be enclosed in an earthed housing (30). which can contain one or more current transformers (34, 36, 38). The apparatus can be used for fault detection and location, and may be used in combination with a power cable or a switch.