IEC 60794-3-12:2021 pdf download

IEC 60794-3-12:2021 pdf download.Optical fibre cables – Part 3-12: Outdoor cables – Detailed specification for duct and directly buried optical telecommunication cables for use in premises cabling
1 Scope
This part of IEC 60794 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.
2 Normative references
The following documents are referred to in the text in such a way that some or all of their content constitutes requirements of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. IEC 60793-2-10:2019, Optical fibres – Part 2-10: Product specifications – Sectional specification for category A1 multimode fibres IEC 60793-2-50:2018, Optical fibres – Part 2-50: Product specifications – Sectional specification for class B single-mode fibres IEC 60794-1-1, Optical fibre cables – Part 1-1: Generic specification – General IEC 60794-1-2, Optical fibre cables – Part 1-2: Generic specification – Basic optical cable test procedures – General guidance IEC 60794-3, Optical fibre cables – Part 3: Outdoor cables – Sectional specification IEC 60794-3-10, Optical fibre cables – Part 3-10: Outdoor cables – Family specification for duct, directly buried and lashed aerial optical telecommunication cables
4 General requirements
The cable shall comply with the family specification, IEC 60794-3-10, and meet the requirements which are defined in it, including requirements in the sectional specification, IEC 60794-3. Particular requirements detailed in Clause 5 are optional, relative to the requirements of IEC 60794-3-10, or define additional requirements. The optical fibre contained in cables covered by this document shall comply with one of the following standards, and meet the normative requirements defined within them as applicable:  IEC 60793-2-50:2018, Annex A IEC 60793-2-50:2018, Annex F (single-mode B-652.D fibre sub-category); (single-mode B-657 fibres); IEC 60793-2-10:2019, Annex A A1-OM5). (multimode fibre sub-categories A1-OM3, A1-OM4 and To ensure compatibility with the ISO/IEC 11801 series, optical performance level requirements are presented in terms of the performance classification codes for cabled optical fibre as follows: • OS1a: single-mode fibre, sub-categories B-652.D or B-657; • OS2: • OM3: • OM4: • OM5: single-mode fibre, sub-categories B-652.D or B-657; multimode fibre sub-category A1-OM3; multimode fibre sub-category A1-OM4; multimode fibre sub-categoryA1-OM5. NOTE OM1 These codes are informative from the perspective of the requirements defined in this document. The OS1, and OM2 performance classification codes for cabled optical fibre are no longer normative in ISO/IEC 11801 (Parts 1 through 6). See ISO/IEC 11801-1:2017, Annex F, for more information.
5 Particular requirements
5.1 General These requirements either define a specific option relative to the requirements of IEC 60794 ‑3‑10 or define additional requirements. 5.2 MICE (mechanical, ingress, climatic and chemical and electromagnetic) characteristics Cables intended for installation in conformity with ISO/IEC 11801 -1 and related standards may require the specification of additional tests to ensure their suitability in the applicable environments defined by the mechanical, ingress, climatic and chemical and electromagnetic (MICE) classification. Such tests are outside the scope of IEC 60794 cable specifications, and MICE criteria are not part of the requirements for IEC 60794 specifications. The MICE tests may be the same as, similar to, or substantially different from, the tests required by IEC 60794 specifications, specifically those in IEC 60794-1-21, IEC 60794-1-22 and IEC 60794-1-23. Cables manufactured per IEC 60794 specifications, may or may not meet the MICE criteria. For supplemental discussion, see IEC TR 62362. 5.3 Transmission requirements Attenuation of cabled fibre 5.3.1 Depending on the fibre category, the attenuation coefficient of the cabled fibre shall be less than the maximum values in Table 1 for the multimode fibres and less than the maximum values in Table 2 for single-mode fibres – for the wavelengths listed in Table 2. The fibre category and performance level shall be agreed between customer and supplier.