光纤电缆第3-12部分:室外电缆房屋布线用导管和直埋光纤通信电缆详细规范

[中文适用范围]： ThispartofIEC 60794 is a detailed specification for duct and directly buried optical telecommunication cables for use in premises cabling to ensure compatibility with ISO/lEC 11801-1-andISO/IEC 24702.-Those-standards have This document's requirements-t0 ensure that the ISO/lEC 11801-1 models work for generic cabling and system performances. Values in this document support these models. The requirements of the family specification IEC 60794-3-10 are applicable to cables covered bythisdocument.Particular requirements detailed in Clause 5 either define a specific option relative to the requirements of IEC 60794-3-10 or define additional requirements. [外文原描述]： IEC 60794-3-12:2021 RLV contains both the official IEC International Standard and its Redline version. The Redline version is available in English only and provides you with a quick and easy way to compare all the changes between the official IEC Standard and its previous edition. IEC 60794-3-12:2021 is a detailed specification for duct and directly buried optical telecommunication cables for use in premises cabling to ensure compatibility with ISO/IEC 11801-1. This document's requirements ensure that the ISO/IEC 11801-1 models work for generic cabling and system performances. Values in this document support these models. The requirements of the family specification IEC 60794-3-10 are applicable to cables covered by this document. Particular requirements detailed in Clause 5 either define a specific option relative to the requirements of IEC 60794-3-10 or define additional requirements. This third edition cancels and replaces the second edition published in 2012. This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition: - addition of references to ISO/IEC 11801-1; - removal of references to ISO/IEC 24702; - incorporation of the OM5 cabled fibre performance category; - incorporation of the OS1a cabled fibre performance category; - cabled fibre performance categories OM1, OM2 and OS1 are no longer normative, and are retained for information.