Standards UNE - Spanish national standards - Page 1378

Short-circuit currents in three-phase a.c. systems - Part 1: Factors for the calculation of short-circuit currents according to IEC 60909-0

Standard published on 27.7.2005

Short-circuit currents in three-phase a.c. systems - Part 4: Examples for the calculation of short-circuit currents

Standard published on 30.5.2002

Radiation protection - Performance criteria for laboratories performing initial cytogenetic dose assessment of mass casualties in radiological or nuclear emergencies - General principles and application to dicentric assay (ISO 21243:2022) (Endorsed by Asociación Espanola de Normalización in November of 2025.)

Standard published on 1.11.2025

Agricultural equipment -- Mechanical connections between towed and towing vehicles -- Implement hitch rings and attachment to tractor drawbars

Standard published on 22.12.2010

Aerospace series - Aluminium alloy Al-P16- - T6151 - Plates - 6 mm < a = 120 mm

Standard published on 1.10.2019

Water quality - Multi-compound class methods - Part 1: Criteria for the identification of target compounds by gas and liquid chromatography and mass spectrometry (ISO 21253-1:2019)

Standard published on 21.10.2020

Water quality - Multi-compound class methods - Part 2: Criteria for the quantitative determination of organic substances using a multi-compound class analytical method (ISO 21253-2:2019)

Standard published on 21.10.2020

Lasers and laser-related equipment - Test methods for laser-induced damage threshold - Part 1: Definitions and general principles (ISO 21254-1:2025) (Endorsed by Asociación Espanola de Normalización in October of 2025.)

Standard published on 1.10.2025

Lasers and laser-related equipment - Test methods for laser-induced damage threshold - Part 2: Threshold determination (ISO 21254-2:2011) (Endorsed by AENOR in December of 2011.)

Standard published on 1.12.2011

Lasers and laser-related equipment - Test methods for laser-induced damage threshold - Part 3: Assurance of laser power (energy) handling capabilities (ISO 21254-3:2011) (Endorsed by AENOR in December of 2011.)

Standard published on 1.12.2011