electricalscho

A protection system that is designed to operate only for abnormal conditions within a clearly defined zone of the power system.

A single relay that can be used alone or in combinations with others.

Allows inputs to be measured in one direction only. The stated output range indicates the minimum and maximum input levels.

An enclosure for use underground that may be either a handhole or manhole.

(URD) Refers to the system of electric utility equipment that is installed below grade.