Job Description:

• 1) Tests, cleans, repairs, and adjusts relays used to protect and control functions of equipment, such as circuit breakers, transformers, and automatic switches in generating stations, substations, and distribution facilities: Connects relay to test board and adjusts test board controls to simulate operating conditions.

• 2) Observes ammeters, voltmeters, and related test board recording and indicating instruments to determine if relay performs all functions correctly, according to specifications of manufacturer and relay history card.

• 3) Analyzes reactions of relay to tests to identify cause of malfunction.

• 4) Tightens bolts, springs, and electrical connections, and adjusts screws to correct malfunction.

• 5) Adjusts electrical, thermal, and timing elements to calibrate relay, according to installation specifications.

• 6) Dismantles, cleans, or replaces worn or defective relays, using handtools and brush or feather.

• 7) Records test results, repairs, adjustments, and related data on relay history card.

• 8) May periodically inspect and test relays at functioning points.

• 9) May test and repair related equipment, such as telemetering and supervisory-control devices.