Contens №3-2018

Science and technology

M.K. Kamensky, Cand. Sc. (Engineering), Deputy Division Manager OJSC VNIIKP;
T.A. Nedaikhlib, Senior Engineer OJSC VNIIKP;
A.A. Frik, Cand. Sc. (Engineering), Head of Laboratory OJSC VNIIKP
Power cables wiht aluminium alloy conductors for electrical wiring in residential buildings

OK «RUSAL» developed 8000 series aluminum alloys having a number of advantages over electrical aluminum. Cable and wire with current carrying conductors made of these alloys were developed and put into commercial production with the aim of increasing aluminum consumption. Comprehensive investigations were carried out to assess the feasibility of using cable and wire with aluminum alloy conductors for electrical wiring in residential and commercial buildings. Based on positive results of the performed investigations it is recommended to amend the federal regulations concerning the selection and application of cable and wire in building wiring.
Key words
current carrying conductor; aluminum alloys; heat treatment of alloy; contact connections; wiring products; transient electrical resistivity; allowable. heating temperature; physical and mechanical characteristics; cable applications; electrical wiring.
V.V. Bannov, Cand. Sc. (Engineering), Technical Director of JSC «Samara Cable Company»;
A.K. Bul’khin, Cand. Sc. (Engineering), Chairman of Board of Directors of JSC «Samara Cable Company»;
V.F. Klyuchnikov, Cand. Sc. (Economy), General Director of JSC «Samara Cable Company»;
V.B. Popov, Professor of «Communication and Measurement Lines in Telecommunications» Department of Povolzhsky State University of Telecommunications and Informatics
Results of experimental study of copper conductor cable resistance to low ambient temperature

The paper describes the tests of communication cable and signal and blocking cable for resistance to temperature factors, specifically to low temperature, in order to assess their applicability for installation and operation in the Extreme North and Siberia regions. The results of cable tests for resistance to temperature cycling and bending at subzero temperatures are presented.
Key words
copper conductor communication cable; signal and blocking cable; cable sheath tests; cable resistance to subzero temperatures.
A.L. Zubilevich, Cand. Sc. (Engineering), Professor of «Guiding Telecommunication Environments» Departament (MTUCI);
S.A. Sidnev, Cand. Sc. (Engineering), Assistant Professor of Management Department (MTUCI);
Contact: mtuci@mtuci.ru
V.A. Tzarenko,  Post-graduate student of Management Department  (MTUCI)
Choice of the number of redundant optical fibers in communication cables

The ability of the network to perform the specified functions under certain conditions for a given time is one of the main tasks in the design, construction and operation of communication lines. In the article, optical communication lines are divided into, conventionally speaking, traditional ones and laid in hard-to-reach terrain. To the last case it is necessary to attribute underwater optical cables, suspended and underground OK, laid in places, access to which is difficult or impossible for the maintenance personnel. The paper deals with the redundancy of optical fibers for communication cables laid in hard-to-reach terrain.
Key words
optic fiber cables (OFC); optical fibers (OF); redundancy; reliability; expected costs of redundancy.
V.L.G. Vasilets, Cand. Sc. (Engineering), Chief Polymer Material Spesialist «Zavod Yuzhkabel» PJSC;
V.M. Zolotarev, Dr. Sc. (Engineering), General Director «Zavod Yuzhkabel» PJSC;
E.V. Chuleeva, Cand. Sc. (Engineering), Director of Research and Development Centre «Zavod Yuzhkabel» PJSC
Fire safety composite materials based on olefin copolymers. Directed control of prosessing, physicomechanical and thermophysical properties

Flame retardant polymer composites based on olefin copolymers were studied with the aim of controlled regulation of their processing and some performance characteristics. The methods developed for such regulation of properties are described. The dependences of rheological, physical-and-mechanical and thermal-and-physical properties, as well as oxygen index on the polymer compound formulation were studied with the chemical composition, dispersity of fire-retardant fillers and the effect of modifying additive taken into account.
Key words
flame retardant polymer composites; fire-retardant fillers; rheological properties; physical-and-mechanical properties; thermal-and-physical properties.


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