公开(公告)号：US10591517B2

公开(公告)日：2020-03-17

申请号：US15699277

申请日：2017-09-08

Applicant: ROLLS-ROYCE plc

Inventor： Steven Fletcher ,  Stuart J. Galloway ,  Patrick Norman

IPC: G01R19/165 ,  G01R31/08 ,  H02H3/20 ,  G01R15/18 ,  H02H1/00

Abstract: An electrical fault detector is shown for installation in electrical network (101) of the type comprising a first voltage source (104) and a second voltage source (107), each of which have a respective positive rail (105,108) connected by a positive concentrator (110) and a respective negative rail (106,109) connected by a negative concentrator (111). The detector comprises an inductor (112) for location in one of: the positive concentrator between the connections of the positive rails thereto, and the negative concentrator between the connections of the negative rails to thereto. The detector also comprises a fault identification device (113) configured to monitor the voltage across the inductor, and generate a fault signal in response to the voltage across the inductor exceeding a threshold.