For relays to work efficiently and protect electrical equipment they need to be checked periodically. Regular inspection
and maintenance of relays is paramount in protecting electrical systems from unscheduled outages. A number of problems
can occur without proper maintenance. Relays will nuisance trip when set too low. If not coordinated, the wrong
relay may trip and bring down large portion of the system.
Many factors can influence the operation of protective relays. These include changes in load, replacement of
equipment, dust or dirt from the environment or age. Regular maintenance, calibration and testing by trained personnel
|Edison ESI has the trained professionals and state-of-the-art test equipment to assure your protection system is
properly calibrated and in good working condition.
We offer power system analysis to determine the proper relay settings and the maintenance and testing expertise
to keep your distribution system functioning safely and effectively. Plus detailed test reports to provide you
with the ongoing records you need. Regardless of the manufacturer or vintage of your protective relays we can inspect
and maintain them for your peace of mind.
Our expert substation and generation protective relay technicians specialize in startup testing and function testing
of protective relays and controls.
We have wide-range capability to test a variety of relays from older electro-mechanical relays to new, microprocessor-based
If necessary, we can also perform power system studies to determine proper coordination and device evaluation.