Ground fault detection

Details Ground fault detection Ground fault detection

H - Electricity

02

H

H02H 3/17 (2006.01)

Patent

CA 2660382

The present invention relates to a ground fault detection arrangement for a synchronous three-phase electrical machine, and an electrical system comprising a ground fault detection arrangement and a synchronous three-phase electrical machine. The ground fault detection arrangement injects an off-nominal frequency voltage between a neutral point of the synchronous three-phase electrical machine and ground and measure resultant currents to detect a ground fault.

La présente invention concerne un agencement de détection de défaut de masse pour une machine électrique synchrone triphasée, et un système électrique comprenant un agencement de détection de défaut de masse, ainsi qu'une machine électrique synchrone triphasée. L'agencement de détection de défaut de masse injecte une tension de fréquence non nominale entre un point de neutre de la machine électrique synchrone triphasée et la masse et mesure des courants résultants afin de détecter un défaut de masse.

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