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9 // 2009



ISSN: 2074-7489
26-10/09

NEWS IN POWER-ENGINEERING

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One of the vital problems is getting of technical conditions and additional powers from energy supplying organizations

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Increasing of efficiency of equipment diagnostics


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Market of transformers: three phases of crisis?

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High-voltage cables with cross-linked polyethylene insulation: cost effectiveness, reliability, environmental friendliness requirements
Application of cross-linked polyethylene insulation in high-voltage cables (also called plastic insulation, thus cables with such insulation are called XLPE insulated cables) gives certain advantages comparing to medium and high pressure oil-filled cables.

Key words: high-voltage cables, insulation, polietilen.

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Choosing measuring transformers

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Frequency converters: selection criterions
Frequency converters actively conquer the market and it is extremely topical today to increase qualification of technicians and engineers. An author of the article doesnt aim to clarify the topic fully but tries to help equipment developers to orientate themselves better when choosing and applying frequency converters in everyday practice.

Key words: frequency converters, equipment, themselves.

Equipment for cables insulation testing

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Instrumental heat recording: problems of tariff regulation
With every passing day the process of changing to instrumental heat recording gathers pace. However absence of competent tariff policy makes the market of heat supply unstable. Unpredictability of consumption volumes which means volumes of service realization could cause serious financial problems to heat supply system. That is why the management of many heat supply organizations which understand the necessity of countrywide recording doesnt rush to implement it in practice.

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Modular individual heating units: advantages and disadvantages

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Effectiveness analyses of heat pump units of different types

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Features of heat-insulating materials used in enclosures for refrigerant systems

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Processes peculiarities in adsorptive air separation units
Adsorptive generators of oxygen and nitrogen which use the method of pressure swing adsorption, have their own peculiar characteristics. Some of them are highlighted in this article. The article analyses the influence of humidity in initial air on generators operation. It is noted that during oxygen generator operation there are significant nonisothermal effects. An article considers the reasons of their occurrence.

Key words: adsorption, air, nitrogen, oxygen generator.

Noise with the compressors operating and its reduction

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Gas meters. Selection principles

Heat control in power-engineering

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Technique of check of working capacity of the device of protective switching-off

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Repairing standard for energy consumption
Forecasting of energy consumption during the period of enterprise capital repair is made as a rule on the basis of statistical data of previous periods. It would be reasonable if the list of conducted works had been analogous to the previous period. Otherwise the forecast of energy consumption based on data for previous periods is not completely accurate.

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Increasing of competitive ability of repair enterprises in electrical energy industry

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Commercial account of waste water problems and features

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Choosing safety equipment for protection against the effect of electrical arc

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Russian Federation Government Regulation from April 7, 2008212 About the statement of an order of the organisation of works on delivery of permissions to the admission in operation of power installations




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