Con Edison said the blackout that plunged parts of Manhattan into darkness Saturday night was due to a substation's relay protection system that "did not operate as designed." The utility company said ...

The objective of protective relays and protective schemes is to protect electrical equipment such as transformers, lines, cables, bus bars, etc. during abnormal system conditions. Hence, protective ...

With the new PCA2 protection condition analyser from Megger, it is now possible to test simultaneously all of the key elements of substation protection systems – including protection relay, circuit ...