Dr. G.I. Meshchanov, President of Electrocable Association
Production of MV and HV energy cables at the Electrocable Association plants
The paper provides information about the production of basic types of cable products, the output of 6–35 kV and 110–220 kV power cable production within the recent years, describes prospects for the replacement of impregnated paper insulated power cables with XLPE cables. The state of MV and HV cable production is estimated, the availability of regulating documents and manufacturing equipment is overviewed. Data on the production capacities and the operating rates of the Electrocable Association plants are given.
Power cable, HV, MV, production capacity, regulating documents Science and Technology
Dr. I.B. Peshkov, Professor, President of International Intercable Association
Underwater cables: current state and trends of development (a review)
The review is devoted to the history and current state of underwater power supply and data transmission cable lines. The author provides information on HVDC cable lines installed in Italy and USA, on HVAС cable lines used to supply power to oil-gas platforms and to transmit electrical energy from the offshore wind farms in Denmark, Norway and Saudi Arabia. Underwater fiber optic cable links are also dealt with. Evaluation of the current state and prospects for future development of underwater cable market is given. The review is based on the information from the leading foreign companies of the International Cablemakers Federation (ICF).
Underwater cable, optic cable, power cable, history, market development
A.N. Gorobets, Engineer; A.A. Kryuchkov, Cand. Sc. (Chemistry), Leading Researcher; V.L. Ovsienko, Cand. Sc. (Engineering), Head of Laboratory; T.A. Stepanova, Research Engineer; M. Yu. Shuvalov, Dr. Sc. (Engineering), Director of Energy Cable and Wire Division, JSC VNIIKP The use of thermal analysis as a means to study thermal conductivity of polymer materials for cable products
Long-term experience of using the differential scanning calorimetry for the investigation of thermal conductivity of various materials is presented in a generalized way. The procedure for the determination of the thermal-conductivity coefficient is described, the factors limiting its application when solving some research tasks are considered. The authors provide the results of the determination of the thermal-conductivity coefficient of several polymer materials for cable products, including the new flame retardant halogen-free polymer compounds.
Thermal analysis, thermal conductivity, thermal-conductivity coefficient, polymer material
Yu.A. Zelenetsky, OAO “Zavod “Microprovod”
About the improvement of technical documentation for enameled wires
The current system of technical documentation for enamel insulated winding wires is getting out of date and fails to promote the market advance of high technology domestic wires. The proposed system includes GOST of general specification type (OTU) with the specifications of the leading international norm level and the specifications (TU) of manufacturing plants. The advantages of the proposed system are described and the examples of its implementation are given based on the experience of the “Microprovod” plant.
A.V. Andrianov, Engineer, JSC VNIIKP; V.K. Andrianov, Cand. Sc. (Engineering), Department Manager, JSC VNIIKP; E.V. Bykov, Cand. Sc. (Physics and Mathematics), Technical Director, ZAO “Electroneftemash”
About the statistics of pin-hole damages of winding wires and inter-turn short-circuits in windings
The paper presents a statistical model which can be used to estimate the probability of inter-turn short-circuits in windings based on data about pin-hole damages in a winding wire. An example is given where the obtained results are used to standardize the number of pin holes in winding wires, as well as to explain the basic regularities of the decrease of the average enamel wire insulation breakdown voltage observed during thermal ageing.
Pin-hole damages, winding wires, inter-turn short-circuits, statistical model