Fibre optic interconnecting devices and passive components - Fibre optic spatial switches - Part 1: Generic specification

Fibre optic interconnecting devices and passive components - Performance standard - Part 071-02: Non-connectorized single-mode fibre optic 1 × 2 and 2 × 2 spatial switches for category C - Controlled environments (IEC 61753-071-02:2020 + AMD1:2024); German version EN IEC 61753-071-02:2020 + A1:2024

IEC 61753-071-6: Fibre optic interconnecting devices and passive components performance standard - Part 071-6: Non-connectorised single mode 1xN spatial switches for category O - Outside plant environments

IEC 61753-073-6 Ed 1.0: Fibre optic interconnecting devices and passive components performance standard - Part 073-6: Non-connectorised medium scale single-mode MxN component spatial switches for category O - Outside plant environment

Spatial distribution of daylight - CIE standard general sky

Non-destructive testing - Qualification of radiographic film digitisation systems - Part 1: Definitions, quantitative measurements of image quality parameters, standard reference film and qualitative control (ISO/DIS 14096-1:2025); German and English version prEN ISO 14096-1:2025

Non-destructive testing - Qualification of radiographic film digitisation systems - Part 1: Definitions, quantitative measurements of image quality parameters, standard reference film and qualitative control (ISO/DIS 14096-1:2025)

Low-voltage auxiliary power systems - Part 2-2: Design criteria - Low-voltage d.c. auxiliary power systems for substations

Low-voltage auxiliary power systems - Design criteria - Low-voltage a.c. auxiliary power systems for substations