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Hydrogen Technologies Standards form the basic framework for market ramp-up
More information
Climate change Standards and specifications support climate targets
More information
Smart Farming Standards and specifications are drivers for the digitalization of agriculture
More information

Standards [CURRENT]

UNE 21428-1-1
Three-phase liquid-immersed distribution transformers 50 Hz, from 25 kVA to 3150 kVA with highest voltage for equipment not exceeding 36 kV. Part 1: General requirements. Section 1: Requirement for dual voltage transformers in high-voltage.

Edition 2021-12-01

Original language Spanish

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Hydrogen Technologies Standards form the basic framework for market ramp-up

Climate change Standards and specifications support climate targets

Smart Farming Standards and specifications are drivers for the digitalization of agriculture

UNE 21428-1-1 Three-phase liquid-immersed distribution transformers 50 Hz, from 25 kVA to 3150 kVA with highest voltage for equipment not exceeding 36 kV. Part 1: General requirements. Section 1: Requirement for dual voltage transformers in high-voltage.

Want to learn more?

UNE 21428-1-1
Three-phase liquid-immersed distribution transformers 50 Hz, from 25 kVA to 3150 kVA with highest voltage for equipment not exceeding 36 kV. Part 1: General requirements. Section 1: Requirement for dual voltage transformers in high-voltage.