ZipRecruiter

Log In

1

Transformer Testing Jobs in California (NOW HIRING)

Delta Star, Inc.

Tester B DSW

San Carlos, CA · On-site

$33.44 - $34.09/hr

Preventative auto testing * Use transformer diagnostic instruments and measurement systems with attention to calibration and accuracy. * Perform product inspections and report any non-conformances ...

next page

Showing results 1-20

All JobsTransformer Testing JobsTransformer Testing Jobs in California

Transformer Testing information

See California salary details

$18

$33

$50

How much do transformer testing jobs pay per hour?

As of Jul 4, 2026, the average hourly pay for transformer testing in California is $33.63, according to ZipRecruiter salary data. Most workers in this role earn between $26.83 and $38.89 per hour, depending on experience, location, and employer.

What are the 4 types of transformers?

In transformer testing roles, the four main types of transformers are power transformers, distribution transformers, instrument transformers, and specialty transformers. Power transformers are used in transmission networks, distribution transformers step down voltage for consumers, instrument transformers provide measurement and protection functions, and specialty transformers serve specific applications like isolation or impedance matching. Understanding these types helps ensure proper testing and maintenance in electrical systems.

What are the key skills and qualifications needed to thrive in the Transformer Testing position, and why are they important?

Excelling in Transformer Testing requires a strong background in electrical engineering, knowledge of transformer operations, and hands-on experience with diagnostic and testing procedures. Familiarity with testing equipment such as insulation resistance testers, turns ratio testers, and adherence to industry standards like IEC or IEEE is essential, and certifications in electrical safety or high-voltage testing are often preferred. Attention to detail, strong problem-solving abilities, and effective communication skills help professionals identify faults and work collaboratively with maintenance or engineering teams. These competencies are crucial for ensuring transformer reliability, safety, and compliance with industry and regulatory requirements.

How much do transformer testers make?

Transformer testers typically earn between $50,000 and $80,000 annually, depending on experience, certifications, and location. Entry-level positions may start lower, while experienced technicians with specialized skills can earn higher salaries, especially if working overtime or in industrial environments.

What is a Transformer Testing job?

A Transformer Testing job involves inspecting, evaluating, and ensuring the proper functioning of electrical transformers. This includes testing parameters like insulation resistance, winding resistance, turns ratio, and oil quality to identify faults or inefficiencies. Professionals in this role use specialized equipment and follow industry standards to maintain transformer reliability. They may work in manufacturing, power plants, or service companies to ensure transformers operate safely and efficiently.

Is there a legit product tester job?

A product tester job involves evaluating products for quality, functionality, and safety, often requiring attention to detail and reporting skills. These roles can be found with manufacturers, market research firms, or online testing platforms, and may require basic knowledge of the product category and sometimes a certification or background check. Legitimate opportunities are typically advertised through reputable companies and do not require upfront fees.

What are the typical daily responsibilities of someone working in Transformer Testing?

Professionals in Transformer Testing typically spend their days performing electrical tests on new, repaired, or in-service transformers to assess their health and ensure compliance with industry standards. Their work includes setting up test equipment, recording and interpreting test data, and troubleshooting any detected issues. Collaboration with engineers, maintenance personnel, and safety teams is common to coordinate testing schedules and report findings. Additionally, they may be responsible for preparing detailed test reports and recommending corrective actions if potential faults are identified. This role offers a dynamic mix of hands-on technical tasks and teamwork, ideal for those who enjoy problem-solving and working in industrial or power utility environments.

What is a testing transformer?

A testing transformer is an electrical device used to evaluate the performance and safety of power transformers by applying controlled voltage and current conditions. It helps identify issues such as insulation failure or winding faults and is essential in quality control and maintenance processes in electrical testing environments.
What are the most commonly searched types of Transformer Testing jobs in California? The most popular types of Transformer Testing jobs in California are:
What are popular job titles related to Transformer Testing jobs in California? For Transformer Testing jobs in California, the most frequently searched job titles are:
What job categories do people searching Transformer Testing jobs in California look for? The top searched job categories for Transformer Testing jobs in California are:
Transformer Testing jobs near you
Infographic showing various Transformer Testing job openings in California as of June 2026, with employment types broken down into 10% As Needed, 67% Full Time, 13% Part Time, and 10% Temporary. Highlights an 84% Physical, 3% Hybrid, and 13% Remote job distribution, with an average salary of $69,952 per year, or $33.6 per hour.
Tester B DSW

Tester B DSW

Delta Star, Inc.

San Carlos, CA • On-site

$33.44 - $34.09/hr

Full-time

Medical, Dental, Vision, Life, Retirement, PTO

Posted 20 days ago

Job description

This is an exciting time to be joining Delta Star!
We are Delta Star! The largest, American-owned medium power transformer manufacturer in the United States and the premier manufacturer of mobile transformers and mobile power substations in North America.
We are an industry-leader that has harnessed the power of electricity to reliably connect you to an essential part of modern-day life. Giving you the peace of mind you deserve to go out and make the world a better place!
Summary
Delta Star Inc. is seeking a dedicated and detail-oriented Tester to support quality testing operations for our power and mobile transformers. If you have a foundation in electrical theory, hands-on troubleshooting skills, and a strong commitment to quality, this could be the next step in your career.
What You'll Do
As a Tester, you'll play a hands-on role in performing control circuit and transformer testing procedures to ensure product performance and compliance with specifications. You'll work with engineering documentation and testing instruments, contributing to the overall quality and reliability of our equipment.
A Day in the Life
In this role, you'll follow detailed test procedures, wiring schematics, and technical drawings to conduct functional and performance testing. You'll document quality control results, assist senior technicians with advanced testing, and help ensure that every transformer leaving the facility meets Delta Star's standards. You'll also participate in inspection activities and contribute to continuous improvement efforts.
Specific Duties
  • Recognize and complete all required Quality Control documentation accurately and in a timely manner.
  • Perform control functional tests on basic transformer control circuitry.
  • Conduct standard transformer tests including:
    • Turns ratio
    • Insulation resistance (megger)
    • Power factor (bushing and overall)
    • Dissipation factor
    • Phase relationship
    • CT ratio and polarity
    • 10kV excitation
    • Oil hipot
  • Assist with advanced testing procedures under the supervision of senior technicians, including:
    • Induced voltage with RIV/Partial Discharge
    • Impulse and heat run testing
    • Load and no-load losses
    • Sound level testing
    • Preventative auto testing
  • Use transformer diagnostic instruments and measurement systems with attention to calibration and accuracy.
  • Perform product inspections and report any non-conformances, material defects, or unusual conditions to the supervisor.
  • Participate in quality improvement initiatives and team training.

What We're Looking For
We're looking for a hands-on, quality-driven technician with a strong work ethic and a passion for learning. You should be comfortable working in a fast-paced manufacturing environment and eager to grow your technical skillset.
Position Requirements
  • High school diploma or equivalent required; technical training or coursework in electrical theory preferred.
  • Basic understanding of electrical theory and troubleshooting techniques.
  • Ability to read and interpret schematics, wiring diagrams, and technical documents.

Skills & Competencies
  • Experience using electrical measurement and diagnostic tools.
  • Strong attention to detail with the ability to follow complex procedures.
  • Ability to work both independently and as part of a team.
  • Excellent organizational and documentation skills.
  • Willingness to assist senior team members and take part in continuous training.

Why Join Us?
At Delta Star, you'll be part of a supportive and forward-thinking team that values professionalism, efficiency, and exceptional service. We offer a comprehensive benefits package to support you and your family, including medical, dental, vision, life, and disability insurance. We also provide a 401(k) plan with matching contributions, an Employee Stock Ownership Plan (ESOP), and a corporate bonus plan.
You'll enjoy paid time off, sick pay, floating holidays, and access to flexible spending accounts and consumer benefits. Additionally, we provide a benefit bank, a wellness center to support your health and well-being, and education assistance to help you grow in your career. At Delta Star, we're committed to helping you thrive both personally and professionally.
Pay Transparency
We are committed to fair and transparent pay practices. Compensation for this position will be determined within the posted salary range based on factors such as candidate qualifications, relevant experience, internal equity, market competitiveness, skills, and certifications. For union-represented roles, pay is established by the applicable collective bargaining agreement.
Other Duties
Please note this job description is not designed to cover or contain a comprehensive listing of activities, duties or responsibilities that are required of the employee for this job. Duties, responsibilities, and activities may change at any time with or without notice.
AAP/EEO Statement
Delta Star is an EEO/Affirmative Action Employer and does not discriminate on the basis of age, race, color, religion, gender, sexual orientation, gender identity, gender expression, national origin, protected veteran status, disability or any other legally protected status.

Apply