Power systems today operate in an environment where reliability and safety must be maintained despite rising loads, expanding ...

Alliance brings power and utility companies a cutting-edge solution for driving relay setting development efficiency, ensuring data accuracy and achieving NERC PRC-027-1 compliance MARLBOROUGH, Mass., ...

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 ...

ABB has installed more than 700,000 SPACOM relays used for power system protection and reliable power system operation world-wide. With the older generation of relays now aging, ABB is developing new ...

To be competitive, some electrical contractors often supply low-voltage (LV) service entrance switchboards and switchgear that meet the minimum safety requirements of ...

Solid-state relays provide robust solutions for electronic switching in load control applications and hold many advantages over electromechanical relays. New, emerging solid-state relay designs offer ...

Members can download this article in PDF format. Power systems employ diodes to perform a variety of functions. For example, diodes can protect against damage due to power-source reverse-polarity ...

Con Edison blamed their relay protection system Monday for the weekend power outage in New York City, saying the system didn’t operate as designed, according to preliminary findings from the company. ...

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 ...