Test Technician - Medium/High Voltage (Union)
Asplundh Electrical Testing, LLC
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Job summary
Asplundh Electrical Testing (AET) is seeking a Test Technician for medium to high voltage work. The role focuses on hands-on testing, safety, and problem-solving in field environments.
You will perform HV tests (insulation resistance, power factor, TTR, winding and resistance checks), interpret drawings, and assist with system commissioning and maintenance. Travel to client sites is required and a valid driver’s license is essential.
Qualifications
- 2–5+ years in electrical testing or substation maintenance.
- Hands-on with HV apparatus testing and common test equipment.
- NETA/NICET certification required.
- Valid driver’s license and willingness to travel.
Responsibilities
- Perform field testing and inspection of HV equipment and substation systems.
- Conduct insulation resistance, power factor, transformer turns ratio, winding resistance, and contact resistance tests.
- Assist with commissioning and maintenance of substation equipment up to HV levels.
- Support relay testing using standard industry test sets (Omicron CMC, Doble tools).
- Document test results and prepare field service reports.
Skills
Education
Tools
Job description
Date Posted: Sep 20, 2026
Requisition Number: 6994
Salary Range: USD $30.00 - USD $55.00 (Annually)
At Asplundh Electrical Testing (AET), we power reliability across critical infrastructure—and our technicians are at the heart of that mission. We value professionals who come from hands-on, mission-critical electrical environments and bring a strong commitment to safety, ownership, and problem-solving. If you have experience working on complex electrical systems and thrive under pressure, this is a role where your skills directly translate.
Join us and be part of a team known for safety, quality, and technical excellence.
- Apparatus Testing & Maintenance
- Perform field testing and inspection of circuit breakers, power transformers, instrument transformers (CTs/PTs), switchgear, cables, and bus systems
- Conduct electrical tests including:
- Insulation resistance (Megger)
- Power factor / Doble testing
- Transformer turns ratio (TTR)
- Winding resistance
- Contact resistance
- Breaker timing and mechanical inspections
- Assist with commissioning, troubleshooting, and maintenance of substation equipment up to HV levels
- Relay Testing Support
- Assist with basic protective relay testing and functional verification during commissioning and maintenance activities
- Support relay-related work using standard industry test sets such as:
- Omicron CMC
- Doble test equipment
- Megger relay test tools
- Help perform simple relay checks and system verification, such as:
- Functional checks of protection schemes
- Verification of wiring, inputs/outputs, and control logic
- Participate in end-to-end or system-level testing activities under supervision, without responsibility for advanced relay programming or settings development
- Interpret single-line diagrams, wiring schematics, and equipment drawings
- Troubleshoot electrical equipment issues and assist in root cause analysis
- Accurately document test results and prepare field service reports
- Ensure compliance with NETA standards, safety regulations, and company procedures
- Travel to client sites and work in outdoor substation environments
- Required
- 2–5+ years of experience in electrical testing, substation maintenance, or field service
- Hands-on experience with medium- and high-voltage apparatus testing
- Familiarity with common test equipment such as:
- Megger
- Doble
- Vanguard or similar
- Basic understanding of protective relays and control circuits (exposure, not specialization)
- Ability to read and interpret electrical drawings and schematics
- Valid driver’s license and willingness to travel
- Experience in a NETA-accredited testing environment
- NETA/NICET certification
- Exposure to protective relay testing equipment (Omicron, Doble test sets, etc.)
- Associate degree or technical certification in Electrical Technology or related field
- OSHA 10/30 or equivalent safety training
Asplundh Electrical Testing (AET) has been a leading provider of independent electrical testing services since 1981. Headquartered in Foxboro, MA, with regional offices across the country, AET specializes in substation commissioning, acceptance testing, and maintenance for clients in electrical transmission, distribution, and generation. As a NETA-certified company and a member of Asplundh Engineering Services—a subsidiary of Asplundh Infrastructure Group—AET is committed to delivering reliable, high-quality services at competitive prices.
As part of the Asplundh family, AET benefits from extensive resources and a century of experience. Together, we provide utilities with comprehensive end-to-end services, from design to construction, testing, and maintenance, ensuring reliability and peace of mind.
At AET, we believe in tackling challenges together with our customers, leveraging our collective experience and resources to achieve success in every project.
#LI-HYBRID
At Asplundh Electrical Testing (AET), we power reliability across critical infrastructure—and our technicians are at the heart of that mission. We value professionals who come from hands-on, mission-critical electrical environments and bring a strong commitment to safety, ownership, and problem-solving. If you have experience working on complex electrical systems and thrive under pressure, this is a role where your skills directly translate.
Join us and be part of a team known for safety, quality, and technical excellence.
- Apparatus Testing & Maintenance
- Perform field testing and inspection of circuit breakers, power transformers, instrument transformers (CTs/PTs), switchgear, cables, and bus systems
- Conduct electrical tests including:
- Insulation resistance (Megger)
- Power factor / Doble testing
- Transformer turns ratio (TTR)
- Winding resistance
- Contact resistance
- Breaker timing and mechanical inspections
- Assist with commissioning, troubleshooting, and maintenance of substation equipment up to HV levels
- Relay Testing Support
- Assist with basic protective relay testing and functional verification during commissioning and maintenance activities
- Support relay-related work using standard industry test sets such as:
- Omicron CMC
- Doble test equipment
- Megger relay test tools
- Help perform simple relay checks and system verification, such as:
- Functional checks of protection schemes
- Verification of wiring, inputs/outputs, and control logic
- Participate in end-to-end or system-level testing activities under supervision, without responsibility for advanced relay programming or settings development
- Interpret single-line diagrams, wiring schematics, and equipment drawings
- Troubleshoot electrical equipment issues and assist in root cause analysis
- Accurately document test results and prepare field service reports
- Ensure compliance with NETA standards, safety regulations, and company procedures
- Travel to client sites and work in outdoor substation environments
- Required
- 2–5+ years of experience in electrical testing, substation maintenance, or field service
- Hands-on experience with medium- and high-voltage apparatus testing
- Familiarity with common test equipment such as:
- Megger
- Doble
- Vanguard or similar
- Basic understanding of protective relays and control circuits (exposure, not specialization)
- Ability to read and interpret electrical drawings and schematics
- Valid driver’s license and willingness to travel
- Experience in a NETA-accredited testing environment
- NETA/NICET certification
- Exposure to protective relay testing equipment (Omicron, Doble test sets, etc.)
- Associate degree or technical certification in Electrical Technology or related field
- OSHA 10/30 or equivalent safety training
Asplundh Electrical Testing (AET) has been a leading provider of independent electrical testing services since 1981. Headquartered in Foxboro, MA, with regional offices across the country, AET specializes in substation commissioning, acceptance testing, and maintenance for clients in electrical transmission, distribution, and generation. As a NETA-certified company and a member of Asplundh Engineering Services—a subsidiary of Asplundh Infrastructure Group—AET is committed to delivering reliable, high-quality services at competitive prices.
As part of the Asplundh family, AET benefits from extensive resources and a century of experience. Together, we provide utilities with comprehensive end-to-end services, from design to construction, testing, and maintenance, ensuring reliability and peace of mind.
At AET, we believe in tackling challenges together with our customers, leveraging our collective experience and resources to achieve success in every project.
#LI-HYBRID
- Asplundh Tree Expert, LLC and its family of companies are Equal Opportunity Employers. We consider all qualified applicants without regard to any legally protected characteristic.
- If you require reasonable accommodation during the application or hiring process, please contact our ADA Coordinator at 1-800-248-8733, ext. 3656.
- Employment offers are contingent upon successful completion of applicable pre-employment requirements, which include background screening, drug testing, and employment eligibility verification.
- Compensation determination is based on market data, job scope and individual qualifications.
- We offer a competitive total rewards package inclusive of health and welfare and retirement benefits, as well as paid time off and holiday pay benefits.
- Unsolicited resumes without an executed agency agreement become the property of the company.
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