EN IEC 60794-2-20:2025

IEC 60794-2-20:2024 is part of a family specification covering multi-fibre optical cables for indoor use. The requirements of the sectional specification IEC 60794-2 are applicable to cables covered by this document. Annex B contains a blank detail specification and general guidance in case the cables are intended to be used in installations governed by the MICE table of ISO/IEC 11801-1. This fourth edition cancels and replaces the third edition published in 2013. This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition:a) update of the normative references;b) review update of parameters and requirements for mechanical tests and environmental tests, maintaining alignment with additional relevant standards in the IEC 60794-2 series;c) addition of cabled fibre attenuation requirements;d) addition of cable design examples.This document is to be used in conjunction with IEC 60794-1-1:2023, IEC 60794-1-2:2021, IEC 60794‑1‑21:2015 and IEC 60794‑1‑21:2015/AMD:2020, IEC 60794-1-22:2017, IEC 60794‑1-23:2019 and IEC 60794‑2:2017.