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<article article-type="research-article" dtd-version="1.3" xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xml:lang="ru"><front><journal-meta><journal-id journal-id-type="publisher-id">omna</journal-id><journal-title-group><journal-title xml:lang="ru">Омский научный вестник</journal-title><trans-title-group xml:lang="en"><trans-title>Omsk Scientific Bulletin</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">1813-8225</issn><issn pub-type="epub">2541-7541</issn><publisher><publisher-name>Омский государственный технический университет</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.25206/1813-8225-2024-189-93-102</article-id><article-id custom-type="edn" pub-id-type="custom">XSIHVC</article-id><article-id custom-type="elpub" pub-id-type="custom">omna-318</article-id><article-categories><subj-group subj-group-type="heading"><subject>Research Article</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="ru"><subject>ЭНЕРГЕТИКА И ЭЛЕКТРОТЕХНИКА</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>ENERGY AND ELECTRICAL ENGINEERING</subject></subj-group></article-categories><title-group><article-title>Алгоритмы оценки основных параметров надежности низковольтного оборудования схем цеховых сетей</article-title><trans-title-group xml:lang="en"><trans-title>Algorithms for estimating the main reliability parameters of low-voltage equipment of shop-floor network schemes</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Петрова</surname><given-names>Р. М.</given-names></name><name name-style="western" xml:lang="en"><surname>Petrova</surname><given-names>R. M.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Петрова Рената Маратовна, аспирант кафедры «Электроснабжение промышленных предприятий»</p><p>г. Казань</p></bio><bio xml:lang="en"><p>Petrova Renata Maratovna, Graduate Student of Power Supply of Industrial Enterprises Department</p><p>Kazan</p></bio><email xlink:type="simple">1998renata@mail.ru</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-5379-847X</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Грачева</surname><given-names>Е. И.</given-names></name><name name-style="western" xml:lang="en"><surname>Gracheva</surname><given-names>E. I.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Грачева Елена Ивановна, доктор технических наук, доцент, профессор кафедры «Электроснабжение промышленных предприятий»</p><p>AuthorID (РИНЦ): 692465</p><p>AuthorID (SCOPUS): 57211789327</p><p>г. Казань</p></bio><bio xml:lang="en"><p>Gracheva Elena Ivanovna, Doctor of Technical Sciences, Associate Professor, Professor of Power Supply of Industrial Enterprises Department</p><p>AuthorID (RSCI): 692465</p><p>AuthorID (SCOPUS): 57211789327</p><p>Kazan</p></bio><email xlink:type="simple">grachieva.i@bk.ru</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru">Казанский государственный энергетический университет<country>Россия</country></aff><aff xml:lang="en">Kazan State Power Engineering University<country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2024</year></pub-date><pub-date pub-type="epub"><day>30</day><month>03</month><year>2024</year></pub-date><volume>0</volume><issue>1</issue><fpage>93</fpage><lpage>102</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Петрова Р.М., Грачева Е.И., 2024</copyright-statement><copyright-year>2024</copyright-year><copyright-holder xml:lang="ru">Петрова Р.М., Грачева Е.И.</copyright-holder><copyright-holder xml:lang="en">Petrova R.M., Gracheva E.I.</copyright-holder><license license-type="creative-commons-attribution" xlink:href="https://creativecommons.org/licenses/by/4.0/" xlink:type="simple"><license-p>This work is licensed under a Creative Commons Attribution 4.0 License.</license-p></license></permissions><self-uri xlink:href="https://onv.omgtu.ru/jour/article/view/318">https://onv.omgtu.ru/jour/article/view/318</self-uri><abstract><p>В статье представлена классификация предохранителей, рубильников, автоматических и пакетных выключателей. Определены законы изменения вероятностных характеристик надежности исследуемых аппаратов, а также кабельных линий низкого напряжения. Определены виды функций изменения основных параметров надежности и показаны соответствующие графические зависимости. Проведено сравнение полученных результатов значений вероятности времени безотказной работы с требованиями ГОСТ и паспортными данными. Исследуемые вероятностные параметры низковольтных аппаратов и кабельных линий проверены на соответствие принятому закону распределения случайных величин.</p></abstract><trans-abstract xml:lang="en"><p>The article presents the classification of fuses, breakers, circuit breakers and packet switches. The laws of change of probabilistic reliability characteristics of the studied devices, as well as low-voltage cable lines are determined. Types of functions of change of basic reliability parameters are determined and corresponding graphical dependences are shown. The comparison of the obtained results of the values of probability of failure-free operation time with the requirements of GOST and passport data is carried out. The investigated probabilistic parameters of low-voltage devices and cable lines are checked for compliance with the accepted law of distribution of random variables.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>система внутрицехового электроснабжения</kwd><kwd>вероятность времени безотказной работы</kwd><kwd>вероятность времени отказа</kwd><kwd>предохранитель</kwd><kwd>рубильник</kwd><kwd>автоматический выключатель</kwd><kwd>пакетный выключатель</kwd><kwd>кабельная линия</kwd></kwd-group><kwd-group xml:lang="en"><kwd>power supply system</kwd><kwd>probability of uptime</kwd><kwd>probability of failure time</kwd><kwd>fuse</kwd><kwd>breaker</kwd><kwd>circuit breaker</kwd><kwd>packet breaker</kwd><kwd>cable line</kwd></kwd-group></article-meta></front><back><ref-list><title>References</title><ref id="cit1"><label>1</label><citation-alternatives><mixed-citation xml:lang="ru">Сафин А. Р., Петров Т. И., Копылов А. М. 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