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On the basis of corrosion rate of structural metals as well as values of deposition streams of main atmospheric corrosion stimulators, the country area was divided on 3 distinctly different zones of atmospheric corrosive aggressivity. The usability of corrosion products determination as well as of carried out classification of atmospheric environments corrosion aggressivity for elaboration of technology of energetic lines anticorrosive protection is indicated. Source

The typical chemical compositions of anticorrosive paints was briefly discussed. Comparative testing of commonly employed anticorrosive coatings resistivity for destructive action of UV-radiation has been carried-out. These testing was accomplished in two chambers; In the climatic chamber Wheatherometer Atlas according to appropriate standards and in home-made chamber with high-energetic UV radiation. The effect of HALS photostabiliser on the coatings durability was also tested (Varnish coats' researches intended for anticorrosive protection of metal constructions). The kinds of paints have been selected with best resistance to destructive action of UV radiation, recommended for anticorrosion protection of power lines towers. Source

Szmaja A.,Instytut Elektrotechniki Oddzial Technologii | Szubzda B.,Instytut Elektrotechniki Oddzial Technologii
Przeglad Elektrotechniczny | Year: 2010

Works on creation electrolyte of two organic solvents are presented, one of which has a large ability for the dissociation of dissolved ionic compound, the second-a low viscosity. Conductivity of organic electrolytes has been studied at different concentrations of lithium salts LiClO 4, where the primary polar solvent was propylene carbonate (PC), and co-solvent improves the viscosity were successively: benzene, DEC, dioxane, DMC, DME, EC, THF in different proportions to the PC. Source

Kogut K.,Instytut Elektrotechniki Oddzial Technologii | Mazurek B.,Instytut Elektrotechniki Oddzial Technologii | Kasprzyk K.,Instytut Elektrotechniki Oddzial Technologii | Zboromirska-Wnukiewicz B.,Instytut Elektrotechniki Oddzial Technologii
Przeglad Elektrotechniczny | Year: 2010

This paper describes the mechanism of an electric flashover on the surface of polyamide samples and samples of the polyamide with the glass fiber, which are used as an insulating housing of the metal oxide surge arrester. During the impulse voltage tests it was claimed that the surface flashovers occurring, which lead to the damage of the surge arresters. During the discharges, the stratification between varistors pile and insulating, which lead to lower surface strength are occurred. The role of a surface charge in the development of surface discharge was shown. It was found that the glass fiber used in polyamide housing of the surge arrester can be cause the increasing the electrical and mechanical strength. In this work the flashover voltage was measured. Pictures of the surface discharges by high impulse voltage tests, AC and DC tests were recorded. On the basis of this the impact of the glass fiber on the flashover voltage, the character of the surface discharge and role of the surface charge which determine the flashover was defined. Source

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