Electrical and Electronics Repairers, Powerhouse, Substation, and Relay — Tasks

Task statements

• Inspect and test equipment and circuits to identify malfunctions or defects, using wiring diagrams and testing devices such as ohmmeters, voltmeters, or ammeters.
• Prepare and maintain records detailing tests, repairs, and maintenance.
• Consult manuals, schematics, wiring diagrams, and engineering personnel to troubleshoot and solve equipment problems and to determine optimum equipment functioning.
• Analyze test data to diagnose malfunctions, to determine performance characteristics of systems, or to evaluate effects of system modifications.
• Open and close switches to isolate defective relays, performing adjustments or repairs.
• Notify facility personnel of equipment shutdowns.
• Repair, replace, and clean equipment and components such as circuit breakers, brushes, and commutators.
• Run signal quality and connectivity tests for individual cables, and record results.
• Maintain inventories of spare parts for all equipment, requisitioning parts as necessary.
• Construct, test, maintain, and repair substation relay and control systems.
• Test insulators and bushings of equipment by inducing voltage across insulation, testing current, and calculating insulation loss.
• Schedule and supervise the construction and testing of special devices and the implementation of unique monitoring or control systems.
• 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.
• Disconnect voltage regulators, bolts, and screws, and connect replacement regulators to high-voltage lines.