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4(64)

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Technical sciences and technologies

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The basic directions of improvement of the functioning quality of electric networks of 6-110 kV
Annotation: The main directions of increasing the reliability and electrical safety of power distribution networks are considered in the article. The schemes of the main directions of development and improvement of electric grids are given.
Author: M.N. Ivanov, R.A. Kappel
Year of release: 2016
Number of the journal: 4(64)
Heading: Technical sciences and technologies
Keywords: General-purpose electric network, electromagnetic compatibility, conductive electromagnetic interference, neutral point, improvement of the operation of electric networks
Development of a new fermented dairy product with functional properties
Annotation: The article deals with the development of technologies for the preparation of fermented dairy products, which makes it possible to consider the scientific task of creating yoghurt products with the use of starter cultures as an actual one.
Author: A.N. Lukash
Year of release: 2016
Number of the journal: 4(64)
Heading: Technical sciences and technologies
Keywords: environmental conditions, human health improvement, prophylactic agent, bio-yoghurt, fermentation starter, immunity
The effect of conductive electromagnetic interference on the phase-to-ground fault current in 6-35 kV networks
Annotation: The article presents a study of the effect of a resistor in a network neutral point from 6 to 35 kV on the conductive electromagnetic interference with the ground-fault current. A mathematical model is proposed.
Author: Ye.V. Ivanova, Sh.A. Rakymzhan, D.M. Ivanov
Year of release: 2016
Number of the journal: 4(64)
Heading: Technical sciences and technologies
Keywords: ground-fault current, resistor in the network neutral point, conductive electromagnetic interference
Review of methods of diagnosis of failures of electric motor
Annotation: In the article different methods of diagnosis of failures of electric equipment which are most often found in the industry today. The classification of methods for diagnosing motor failures is presented, and the advantages and disadvantages of existing methods for diagnosing failures in electric equipment are revealed. Based on the description of the methods of diagnosing electric equipment failures, a comparative table was compiled. Analyzing the comparative table of methods for diagnosing failures of electric equipment, the most current method for diagnosing the technical condition of the electric motor was determined.
Author: A.V. Baharev, A. D. Umurzakova, Yu.N. Dementev
Year of release: 2016
Number of the journal: 4(64)
Heading: Technical sciences and technologies
Keywords: asynchronous three-phase engine, short-circuited electrical motor, diagnosis, monitoring, electric drive, vibration monitoring, spectrum analysis