Transformers

Power transformers are critical components in the generation, transmission, and distribution of electrical power. With decades of experience, Intertek provides comprehensive testing, inspection, and certification services for power transformers, ensuring safety, reliability, and regulatory compliance across global markets.

We offer testing and certification for power transformers up to 1000 MVA and voltages up to 850 kV, helping you meet the most demanding project requirements and operational standards.

ETL Listing for Power Transformers

Today, more end-users are demanding independent, ongoing verification and validation of the equipment they rely on. Intertek supports this need by offering the ETL Listing, helping you build confidence with your customers and stakeholders.

Founded in 1938, the ASTA team delivers both IEC Type Test Certification and equipment approval, with every project witnessed by an ASTA Observer. These experts ensure that testing is conducted in line with ASTA requirements and applicable standards, verifying the accuracy of test results. Certification of Type Testing provides independent, objective evidence of compliance for the equipment tested at a specific point in time.

The ETL Mark demonstrates compliance with relevant North American safety standards, including IEEE, ANSI, and UL. It is recognised by Authorities Having Jurisdiction (AHJs) across the United States and Canada, helping you access these critical markets with confidence.

Products and Standards we support:

• Oil-immersed power transformers:
  IEC 60076-1, IEC 60076-2, IEC 60076-3, IEC 60076-5, IEC 60076-10, IEEE C57.12.00, IEEE C57.12.90
• Dry-type power transformers:
  IEC 60076-11, IEEE C57.12.01, IEEE C57.12.91

We also provide additional testing services based on national standards and specific customer requirements, ensuring full compliance and peace of mind for every project.