IEC 60076 — Transformer Glossary

Primary international standard series for power transformers, covering ratings, temperature rise, insulation levels, tests, and tolerances.

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IEC 60076

Primary international standard series for power transformers, covering ratings, temperature rise, insulation levels, tests, and tolerances.

IEC 60076 consists of multiple parts: Part 1 (General), Part 2 (Temperature rise), Part 3 (Insulation levels and dielectric tests), Part 4 (Tappings and connections), Part 5 (Short-circuit withstand), Part 7 (Loading guide), Part 10 (Sound levels), Part 11 (Dry-type), Part 14 (Liquid-immersed using high-temperature insulation). This standard is the baseline specification for transformer procurement across Europe, Middle East, Africa, and most of Asia. ETS designs all products to IEC 60076 as the primary standard.

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Where this term matters in the ETS portfolio.

transformersEHV Power TransformersExtra high voltage power transformers for transmission grids, generation step-up, and interconnection applications at 220–400 kV.

transformersDistribution Liquid TransformersReliable liquid-filled distribution transformers for utility and commercial applications.

transformersCast Resin Dry Type TransformersIndoor-rated dry-type transformers for clean and sensitive environments.

transformersSolar PV Application TransformersSpecialised transformers for photovoltaic power plants and inverter stations.

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IEEE C57North American standard series for power and distribution transformers. The counterpart to IEC 60076 for ANSI/IEEE markets.

UL ListingCertification by Underwriters Laboratories that a product meets specific safety standards. Mandatory for utility-grade transformers in North America.