Description
Inspect, test, repair, or maintain electrical equipment in generating stations, substations, and in-service relays.
- • Construct, test, maintain, and repair substation relay and control systems.
- • Inspect and test equipment and circuits to identify malfunctions or defects, using wiring diagrams and testing devices such as ohmmeters, voltmeters, or ammeters.
- • Consult manuals, schematics, wiring diagrams, and engineering personnel to troubleshoot and solve equipment problems and to determine optimum equipment functioning.
- • Notify facility personnel of equipment shutdowns.
- • Open and close switches to isolate defective relays, performing adjustments or repairs.
- • Prepare and maintain records detailing tests, repairs, and maintenance.
- • Analyze test data to diagnose malfunctions, to determine performance characteristics of systems, or to evaluate effects of system modifications.
- • Test insulators and bushings of equipment by inducing voltage across insulation, testing current, and calculating insulation loss.
- • Repair, replace, and clean equipment and components such as circuit breakers, brushes, and commutators.
- • Disconnect voltage regulators, bolts, and screws, and connect replacement regulators to high-voltage lines.
- • Schedule and supervise the construction and testing of special devices and the implementation of unique monitoring or control systems.
- • Run signal quality and connectivity tests for individual cables, and record results.
- • Schedule and supervise splicing or termination of cables in color-code order.
- • Test oil in circuit breakers and transformers for dielectric strength, refilling oil periodically.
- • Maintain inventories of spare parts for all equipment, requisitioning parts as necessary.
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Advanced Manufacturing
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Tasks & skills:
O*NET occupational data (work activities, skills, knowledge).
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This site includes information from O*NET by the U.S. Department of Labor, Employment and Training Administration (USDOL/ETA), used under the CC BY 4.0 license. Career Clutch has modified some of this information for student readability. USDOL/ETA has not approved, endorsed, or tested these modifications. O*NET® is a trademark of USDOL/ETA.
Last reviewed: Jan 2026
