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- Standard / BS-EN-60794-1-21%3A20
BS EN 60794-1-21:20
BS EN 60794-1-21:20
BS EN 60794-1-21 is an internationally adopted standard that defines standardized mechanical test procedures for optical fiber cables used in telecommunications equipment, hybrid cables combining optical fibers with electrical conductors, and associated fiber units, including microduct fiber units. Originally published in 2015 and updated through Amendment 1 in 2020, this standard supersedes the mechanical test sections previously contained in the second edition of IEC 60794-1-2 (2003). At Presto, our mechanical testing instruments support laboratories in performing compliant optical cable evaluations aligned with this standard's requirements.
Significance
With the rapid development of the internet industry and the global fiber optic network infrastructure, it is very important to ensure optical cable's mechanical strength in the process of laying and operation. The standard defines repeatable, uniform test methods such as tensile performance (Method E1), crush resistance, bend, and impact testing, which support manufacturers and network operators in assessing cable integrity when subject to actual mechanical elements in the network. Compliance helps manufacturers comply with procurement specifications, achieve regulatory approval, and minimize in-field failures from damage during installation. This standard defines the standard on optical fiber cables used in a wide range of telecommunications applications and covers an extensive set of test methods for mechanical properties. Key tests include tensile performance, evaluating attenuation change and fiber elongation under short-term and long-term loading, with minimum sample lengths of 50 meters under tension. The general definitions and requirements are taken from IEC 60794-1-20 and the complete test method index is found in IEC 60794-1-2. The standard must be used in conjunction with IEC 60794-1-1.Scope