Diagnostic Test Technician (DTT) thru Senior

Oncor • Big Spring, TX

4d

About The Position

Oncor Electric Delivery Company LLC is a regulated electricity transmission and distribution business headquartered in Dallas, Texas. It operates the largest transmission and distribution system in Texas, delivering electricity to nearly 4 million homes and businesses through more than 145,000 miles of transmission and distribution lines.

The Diagnostic Test Technician performs diagnostic tests on system equipment, analyzes test data, documents results, and recommends action to help maintain safe and reliable equipment service. The senior level also directs and coordinates others assisting with diagnostic testing, prepares power equipment for testing, performs minor repairs, and provides training when called upon. The role may require travel for training or to assist other areas of the company, as well as response to routine and emergency callouts.

Success is measured by completing required DTT objectives training, maintaining current diagnostic requirements and knowledge of new DTT-related technology, and completing the workload accurately and on time.

Requirements

• For the DTT level: High school diploma, GED, or equivalent and 12 months of transmission field or prior related industry experience working with high-voltage electrical equipment; alternatively, an associate degree in an electrical technology field may be accepted in lieu of these requirements.
• For the DTT Senior level: High school diploma, GED, or equivalent and 3 or more years of related experience working with high-voltage electrical equipment; alternatively, an associate degree in an electrical technology field may be accepted in lieu of these requirements.
• Basic understanding and working knowledge of electrical circuit theory and computer skills.
• Demonstrated leadership abilities.
• Effective problem-solving abilities.
• Effective communication skills.
• Willingness to travel for training and to assist in other company areas.
• Willingness and ability to respond to routine and emergency callouts.

Nice To Haves

• Applicants with 1 or more years of experience working directly with a Diagnostic Test Technician are encouraged to apply.

Responsibilities

• Perform tests on insulating media of substation equipment, including power factor, dielectric breakdown, moisture content, total combustible gas, and dissolved gases.
• Perform diagnostic testing, troubleshooting, and facilitate repairs or replacement of station batteries and battery chargers to support reliable direct-current power to substation equipment.
• Record and analyze test results, including trend analysis, to assess equipment condition and suitability for return to service or identify needed repairs.
• Develop wiring diagrams that reflect test circuits from equipment schematics for subsequent installation and testing activities.
• Check out, calibrate, troubleshoot, and repair test equipment as needed.
• Perform switching operations and initiate actions to restore service at transmission and distribution substations so testing can be conducted safely without interrupting customer service.
• Participate in evaluating the acceptability of new test equipment and computer systems or programs against company standards and test requirements.
• Prepare and process documentation so test results are understood and appropriate actions are taken.
• Perform all work consistently with established safety procedures.
• At the senior level, direct and coordinate the work of others assisting in diagnostic testing.
• At the senior level, prepare power equipment for testing by grounding, disconnecting, reconnecting, and ungrounding it, and make necessary minor repairs.
• At the senior level, provide classroom and field training regarding diagnostic testing when called upon.
• At the senior level, maintain records and computer databases of test results for historical reference and trend analysis.
• At the senior level, analyze test data to determine whether and when suspect equipment requires additional testing.
• At the senior level, use a computer-based maintenance scheduler to ensure equipment testing follows appropriate maintenance intervals and results are retained.
• Perform all essential aspects and functions of the job and other specific job requirements.
• Travel to attend training and assist in other company areas, and respond to routine and emergency callouts.

Benefits

• Annual incentive program.
• Medical, dental, vision, and life insurance.
• Wellness incentives of up to $2,000 in 2026 and other well-being resources.
• 401(k) with dollar-for-dollar company match up to 6%.
• 401(k) match with student debt program.
• Cash balance pension plan.
• Adoption assistance.
• Mental health resources.
• Employee resource groups.
• Tuition reimbursement.
• Competitive vacation, 10 company holidays, and 2 personal holidays.
• Paid parental leave.
• Salary continuation for up to 6 months for approved employee illness or injury.
• Commuter benefits.
• Electric vehicle incentive program.
• Appliance purchase plan.

What This Job Offers

• Job Type: Full-time
• Career Level: Entry Level
• Education Level: High school or GED