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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">probener</journal-id><journal-title-group><journal-title xml:lang="ru">Известия высших учебных заведений. ПРОБЛЕМЫ ЭНЕРГЕТИКИ</journal-title><trans-title-group xml:lang="en"><trans-title>Power engineering: research, equipment, technology</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">1998-9903</issn><issn pub-type="epub">2658-5456</issn><publisher><publisher-name>Kazan State Power Engineering  University</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.30724/1998-9903-2019-21-1-2-10-18</article-id><article-id custom-type="elpub" pub-id-type="custom">probener-861</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</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>POWER ENGINEERING</subject></subj-group></article-categories><title-group><article-title>ИССЛЕДОВАНИЕ ПАРАМЕТРОВ НАДЕЖНОСТИ НИЗКОВОЛЬТНЫХ КОММУТАЦИОННЫХ АППАРАТОВ ПО ЭКСПЛУАТАЦИОННЫМ ДАННЫМ ПРОМЫШЛЕННЫХ ПРЕДПРИЯТИЙ</article-title><trans-title-group xml:lang="en"><trans-title>INVESTIGATION OF THE PARAMETERS OF RELIABILITY OF LOW VOLTAGE COMMUTATION DEVICES ON OPERATING DATA OF INDUSTRIAL ENTERPRISES</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>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 Ивановеа – д-р техн. наук, профессор кафедры «Электроснабжение промышленных предприятий» (ЭПП) Казанского государственного энергетического университета (КГЭУ).</p><p>г.Казань</p></bio><bio xml:lang="en"><p>Elena I. Gracheva – Kazan State Power Engineering University</p><p>Kazan</p></bio><email xlink:type="simple">grachieva.i@bk.ru</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Садыков</surname><given-names>Р. Р.</given-names></name><name name-style="western" xml:lang="en"><surname>Sadykov</surname><given-names>R. R.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Садыков Руслан Рустемович – начальник отдела Приволжские электрические сети, филиала ОАО «Сетевая Компания».</p></bio><bio xml:lang="en"><p>Ruslan R. Sadykov – JSC "Grid Company".</p></bio><email xlink:type="simple">ru059@mail.ru</email><xref ref-type="aff" rid="aff-2"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Хуснутдинов</surname><given-names>Р. Р.</given-names></name><name name-style="western" xml:lang="en"><surname>Khusnutdinov</surname><given-names>R. R.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Хуснутдинов Рустем Рауфович – канд. физ.-мат. наук, доцент кафедры «Электроснабжение промышленных предприятий» (ЭПП) Казанского государственного энергетического университета (КГЭУ).</p></bio><bio xml:lang="en"><p>Rustem R. Khusnutdinov – Kazan State Power Engineering University</p><p>Kazan</p></bio><email xlink:type="simple">khrr@yandex.ru</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Абдуллазянов</surname><given-names>Р. Э.</given-names></name><name name-style="western" xml:lang="en"><surname>Abdullazyanov</surname><given-names>R. E.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Абдуллазянов Рустем Эдвардович – канд. техн. наук, доцент кафедры «Релейная защита и автоматизация электроэнергетических систем» (РЗА) Казанского государственного энергетического университета (КГЭУ).</p></bio><bio xml:lang="en"><p>Rustem E. Abdullazyanov. – Kazan State Power Engineering University</p><p>Kazan</p></bio><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Казанский государственный энергетический университет</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Kazan state power university</institution><country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-2"><aff xml:lang="ru"><institution>Приволжские электрические сети, Филиал ОАО «Сетевая компания»</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Privolzhsky electrical networks, Branch of JSC "Grid Company"</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2019</year></pub-date><pub-date pub-type="epub"><day>10</day><month>04</month><year>2019</year></pub-date><volume>21</volume><issue>1-2</issue><fpage>10</fpage><lpage>18</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Грачева Е.И., Садыков Р.Р., Хуснутдинов Р.Р., Абдуллазянов Р.Э., 2019</copyright-statement><copyright-year>2019</copyright-year><copyright-holder xml:lang="ru">Грачева Е.И., Садыков Р.Р., Хуснутдинов Р.Р., Абдуллазянов Р.Э.</copyright-holder><copyright-holder xml:lang="en">Gracheva E.I., Sadykov R.R., Khusnutdinov R.R., Abdullazyanov R.E.</copyright-holder><license xml:lang="ru" license-type="creative-commons-attribution" xlink:href="https://creativecommons.org/licenses/by/4.0/" xlink:type="simple"><license-p>Данная работа распространяется под лицензией Creative Commons Attribution 4.0.</license-p></license><license xml:lang="en" 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://www.energyret.ru/jour/article/view/861">https://www.energyret.ru/jour/article/view/861</self-uri><abstract><p>Резюме: В статье представлен алгоритм оценки параметров надежности – вероятности времени работоспособного состояния электрических аппаратов на основании статистических данных об отказах автоматических выключателей, установленных в цепях управления и защиты таких потребителей, как компрессоры, насосы и вентиляторы на промышленных предприятиях. Исследованы теоретическая и статистическая функции вероятности безотказной работы автоматических выключателей в зависимости от срока и режимов эксплуатации. Определен вид распределения параметров надежности низковольтных аппаратов на примере автоматов ВА-57. Получены аналитические и графические зависимости основных показателей надежности.</p></abstract><trans-abstract xml:lang="en"><p>Abstract: The article presents an algorithm for estimating reliability parameters - probability of failure-free operation time and failure rate of low-voltage switching devices based on statistical data on failures of circuit breakers installed in control and protection circuits of such consumers as compressors, pumps and fans in industrial enterprises. The theoretical and statistical functions of the probability of the failure-free operation time of automatic circuit breakers depending on the service life and the number of operation cycles have been investigated and a hypothesis has been put forward and confirmed on the normal distribution law of the random variable (probability of failure-free operation o automatic circuit breakers) using the "agreement criteria" - the Kolmogorov test and Pearson's criterion.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>статистический анализ</kwd><kwd>автоматический выключатель</kwd><kwd>магнитный пускатель</kwd><kwd>вероятность безотказной работы</kwd><kwd>интенсивность отказов</kwd></kwd-group><kwd-group xml:lang="en"><kwd>automatic circuit breaker</kwd><kwd>magnetic starter</kwd><kwd>probability of failure-free operation</kwd><kwd>failure rate</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">Lei C., Tian W., Zhang Y., Jia R., Winter R. 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