Contents № 1–2009

   Analysis and forecasts

Dr I.B. Peshkov, Prof., President of Electrocable Association; 
Contact: elektrokabel@rosmail.ru

E.B. Uvarov
, Deputy General Director of Electrocable Association
Performance results of the cable industry of Russia and other CIS countries in 2008


The successful five years of high growth rates of cable production in Russia and other CIS countries ended in the fourth quarter of 2008. The global financial crisis caused a slack in investment activities and reduction of production volumes in manufacturing industry which resulted in a 6% decline of production output at cable plants in 2008, including a 7,4 % reduction of cable and wire production volumes in Russia. At the same time a continuing growth of production is still observed for cable products that are in great demand: self-supporting wires for overhead power transmission lines, fiber-optic cables.

Key words

Volume of output, dynamics, cable production, energy cable and wire, optical cable, self-supporting wire for overhead power transmission lines.

E.B. Uvarov, Deputy General Director of Electrocable Association

The analysis and forecast of global and Russian copper market development

The copper market is subjected to cyclical fluctuations. The structure of copper consumption and production is analyzed according to regions and product types. The Russian cable industry is the main player on the local copper market.  Three major holdings keep the leading position in the copper production in Russia. Cast rod production prevails in the copper turnout structure.

Key words

Copper, volume of output, production output, volume of consumption, copper market, price, copper rod, export of copper, copper replacement, raw materials market.

Dr I.B. Peshkov, Prof., President of Electrocable Association 

The state and prospects of aluminium usage in cable industry


The global and Russian aluminium markets are analyzed. Information on the volumes of aluminium processing at the cable plants of the Electrocable Association is given. The basic technical and economic characteristics of aluminium and copper are compared. Future trends of wider aluminium application in the production of cable and wire are discussed.

 Key words

Aluminium, advantages, drawbacks, price, aluminium rod, volume of output, production output, recycling volume, copper replacement, bimetal conductor.

Science and technology

Leppanen J., Product Manager, Maillefer Extrusion Oy
Chamov A.V., Deputy Head of Representative Office Maillefer SA, Ph.D. 

Extra high voltage cable production with Maillefer catenary and vertical vulcanizing lines


The paper discusses the basic technical features of the insulating process in the medium, high and super-high voltage cable production with the use of Maillefer catenary and vertical vulcanizing lines. The authors describe the Entry Heat Treatment system incorporated in the catenary vulcanizing lines, the Post Heater conception and the МРН system applied in the vertical vulcanizing lines. The described technological decisions enable to increase the efficiency of power cable production and the product quality.

Key words

Medium-voltage cable, high-voltage cable, extra high-voltage cable,  cross-linked polyethylene, vertical continuous vulcanization line, catenary continuous vulcanization line, preliminary thermal treatment, post heading. 

V.F. Grafov, seniour lecturer; Irkutsk State Technical University;
S.M. Dedlovsky, Technical Director; OAO «Irkutskkabel»;
I.E. Kuklin, serviceman; OAO «Irkutskkabel»;
N.A. Strokin, Dr Phys.-Math. Sc., Prof.; Irkutsk State Technical University;
Contact: strokin@istu.edu

V.A. Temerov, Manager of Technical Department; OAO «Irkutskkabel»;
S.I. Fadyushin, Engineer; OAO «Irkutskkabel»;
E.V. Fedotov, Manufacturing Engineer; OAO «Irkutskkabel»
Improvement of sector-shaped conductor insulating technology. Assurance of uniform insulation thickness around the conductor periphery.


The paper deals with the important problem of present-day cable production: application of uniform thickness insulation around the periphery of sector-shaped current-carrying conductors.
The authors suggested and tested under operating conditions a new method for stabilizing the insulation thickness around the conductor periphery: redistribution of the plastic compound melt over the sector elements and optimization of the relative position of the technological tooling and the conductor sector.

Key words

Insulation, current-carrying conductor, sector form, insulation thickness, thickness uniformity, core, mandrel, matrix, extrusion head. 
A.P. Svendrovsky, Cand. Tech. Sc., Director;
Contact: ermis@mail.tomsknet.ru
V.V. Red’ko, Cand. Tech. Sc., Manager of High-Voltage Equipment Department;
About the possibility of cable insulation testing by dc high voltage


In Russia dynamic tests of cable dielectric strength are carried out with a.c. high voltage, while in the USA and European countries d.c. high voltage tests are much more cost-effective and safer than a.c. voltage testing.
It has been proved experimentally that d.c. voltage test results in a number of cases are as reliable as a.c. voltage test results. Suggestions with regard to the test voltage value are given.

Key words

Cable insulation, voltage test, alternating current, direct current, value, test voltage, advantages, reliability.

S.H. Cree, T. Geussens, J.B. Kjellqvist, Dow Europe GmbH, Horgen, Switzerland;
A. Mendelsohn, Y. Gau, The Dow Chemical Company, New Jersey, USA
Contact: TRassokhin@dow.com

Material Developments for High Voltage Cables


The paper presents the latest developments of Dow Wire & Cable intended for the manufacturers of high voltage power cables. Super-clean insulation materials of cross-linked polyethylene, as well as improved semiconducting screen materials for high and super high voltage cables are among these innovations. The paper also deals with other polymers applied in high voltage cable production: cable sheathing materials based on thermoplastic semiconducting compositions and improved high density polyethylene

Key words

Insulation, high voltage cable, power cables, semiconducting screen, cross-linked polyethylene, material purity, semiconducting compound, sheath, high density polyethylene. 
Dr V.N. Korshunov, Prof. of the Moscow Technical Communication and Informatics University
Contact: mtuci@mtuci.ru

Optical cable carrying capacity


The cost of communication via optical cable (OC) is in reverse relationship with the general data transmission rate, which is in its turn limited by the OC transmission capacity.
The OC transmission capacity is determined by the number of optical fibers, total width of the transmission spectrum and limit spectral efficiency (the value of 6 b/s presented in the paper may be used for the latter). Formulas for calculating the OC transmission capacity are given.
Key words

Optical cable, data transmission rate, transmission capacity, bandwidth capability efficiency, spectral efficiency, optical fiber, distortion of a signal 


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