| 摘要 |
Method and device for detecting earth leakage faults 2 in distribution systems for high voltage with delta/star- connected transformer 1 where the detection is carried out by a detecting device 3 for detecting the negative sequence voltage which appears on the star-side of the transformer in the event of an earth leakage fault. The detecting device is provided with delayed outputs 4, 6 to prevent functioning in the event of short-term network interruptions and to activate signalling and remedial devices. <IMAGE> |
