IEC 60794-1-136:2026 pdf download,Optical fibre cables – Part 1-136: Generic specification – Basic optical cable test procedures – Determination of the maximum applicable push force during cable installation by blowing.
This 2026 international standard serves as a dedicated testing subsection under the IEC 60794 core cable specification system, exclusively establishing unified test rules to quantify the maximum safe push force for optical cables installed via pneumatic blowing into pre-laid microducts. Its applicable scope mainly covers slim-size microduct optical cables without rigid reinforced structural components such as solid GRP strength rods, widely used in FTTH, outdoor 5G access and urban underground communication pipelines. The standard elaborates standardized laboratory test setups, regulated ambient testing conditions, detailed operational sequences and uniform data logging rules to avoid inconsistent testing results caused by varied test fixtures or manual operations.

Apart from standardized testing workflows, this document defines clear judgment benchmarks to identify critical push thresholds where cable buckling, sheath deformation or internal fiber damage starts to occur inside ducts. Test outcomes from this standard become official reference parameters for cable manufacturers to mark product mechanical limits and for construction teams to set safe blowing parameters on-site. By unifying global evaluation criteria for blowing push resistance, the specification effectively prevents over-pressing damage during pneumatic installation, cuts construction failure rates, and improves long-term reliability of blown fiber cabling systems across worldwide telecommunication engineering projects.