Designation of phase differences by hour numbers in three-phase AC systems (Endorsed by Asociación Española de Normalización in October of 2021.)
Edition 2021-10-01

Three-phase network distribution transformers
Edition 2008-06-01

Three-Phase Submersible Distribution Transformers
Edition 2006-03-01

Testing of three-phase synchronous machines during refurbishment
Edition 2015-09-01

Energy efficiency test methods for three-phase variable frequency drive systems
Edition 2014-08-01

Testing of three-phase squirrel cage induction motors during refurbishment
Edition 2020-04-01

Test method, marking requirements, and energy efficiency levels for three-phase induction motors
Edition 2022-10-01

Three-phase, pad-mounted distribution transformers with separable insulated high-voltage connectors
Edition 2021-03-01

Three-Phase Live-Front Pad-Mounted Distribution Transformers
Edition 2008-04-01

Single-Phase and Three-Phase Liquid-Filled Distribution Transformers
Edition 2006-03-01