Russian cable industry workers celebrate their professional holiday on October 25. On this day 141 years ago German engineer Karl Siemens was granted a certificate allowing him to work at the company "Siemens and Galsk" built in St. Petersburg. The plant produced insulated wire and telegraph cables, which marked the beginning of domestic cable production.
One of the fastest growing trends in the cable industry today is the creation of cables that transmit information on optical fibers. With better characteristics compared to copper: less attenuation and higher bandwidth, optical cables can transmit at high speed huge amounts of data over long distances. It has a positive impact on the development of telecommunications and increases the level of digitalization in our country
GOST R 52266-2020, Fibre optical cables. General specifications, came into force in September 2020, replacing the document of the same name fifteen years ago.
The updated document establishes requirements for the classification of optical cables, their technical parameters, rules of reception, transportation and storage, as well as safety and environmental protection requirements. It regulates control methods, installation and operation instructions. Defines the manufacturer's guarantees.
The new version of the document was attended by prominent representatives of the industry: Rostelecom, MegaFon, representatives of cable manufacturing plants and nuclear industry. The document systematized the requirements: technical, safety and control methods of optical cables.
Over the 15 years since GOST R 52266-2004 came into effect, the optical industry has undergone a huge number of changes, which are also taken into account in the new document.
GOST R 52266-2020 simplifies the procedure of interaction between consumer and supplier of fiber optic products.
The new GOST differs from the existing international documents by more stringent safety and reliability requirements. This primarily concerns the resistance and durability to climatic and biological influences, which are prescribed in the document taking into account the harsh nature of our country.
For example, overhead cables must be resistant to ambient temperatures from plus 70 ° C to minus 60 ° C; underground - from plus 50 ° C to minus 50 ° C and to freezing in ice.
However, requirements improved in comparison with international experience are not limited to climatic parameters only.
According to GOST R IEC 794-1-93, Optical fibre cables. Generic specification, optical fibre cable suitability criteria are defined in normative and technical documentation. As a result, one manufacturer can take for this criterion optical integrity of the cable, and the other - the attenuation coefficient.
The new GOST specifies in detail all requirements and testing methods applied to optical cables in our country. In addition to the above parameters, such criteria as the appearance of the cable, the deformation of the fiber, the removal force of the acrylic primary protective coating, electrical resistance of conductive cores and their insulation are used.