REFINED SELECTION OF ALLOWABLE CROSS-SECTIONS OF ELECTRICAL CONDUCTORS AND CABLES IN THE POWER CIRCUITS OF INDUSTRIAL ELECTRICAL EQUIPMENT TAKING INTO ACCOUNT EMERGENCY OPERATING MODES
Purpose. Implementation and clarification of the existing engineering approach for determination in industrial power engineering for allowable sections of cable-conductor products (CCP) Sil of electric wires and cables in the circuits of electrical equipment of the general industrial installations c...
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| Дата: | 2019 |
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| Формат: | Стаття |
| Мова: | English Ukrainian |
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National Technical University "Kharkiv Polytechnic Institute" and State Institution “Institute of Technical Problems of Magnetism of the National Academy of Sciences of Ukraine”
2019
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| Онлайн доступ: | http://eie.khpi.edu.ua/article/view/2074-272X.2019.3.06 |
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| Назва журналу: | Electrical Engineering & Electromechanics |
Репозиторії
Electrical Engineering & Electromechanics| id |
eiekhpieduua-article-171434 |
|---|---|
| record_format |
ojs |
| institution |
Electrical Engineering & Electromechanics |
| collection |
OJS |
| language |
English Ukrainian |
| topic |
электроэнергетика электрические провода и кабели цепей электроустановок общепромышленного назначения расчетный выбор предельно допустимых сечений проводов и кабелей в цепях электрооборудования 621.3.022 621.315.3 537.311.8 electric power engineering electric wires and cables of circuits of electrical installations of the general industrial purpose calculation selection of allowable sections of wires and cables in the circuits of electrical equipment 621.3.022 621.315.3 537.311.8 |
| spellingShingle |
электроэнергетика электрические провода и кабели цепей электроустановок общепромышленного назначения расчетный выбор предельно допустимых сечений проводов и кабелей в цепях электрооборудования 621.3.022 621.315.3 537.311.8 electric power engineering electric wires and cables of circuits of electrical installations of the general industrial purpose calculation selection of allowable sections of wires and cables in the circuits of electrical equipment 621.3.022 621.315.3 537.311.8 Baranov, M. I. REFINED SELECTION OF ALLOWABLE CROSS-SECTIONS OF ELECTRICAL CONDUCTORS AND CABLES IN THE POWER CIRCUITS OF INDUSTRIAL ELECTRICAL EQUIPMENT TAKING INTO ACCOUNT EMERGENCY OPERATING MODES |
| topic_facet |
электроэнергетика электрические провода и кабели цепей электроустановок общепромышленного назначения расчетный выбор предельно допустимых сечений проводов и кабелей в цепях электрооборудования 621.3.022 621.315.3 537.311.8 electric power engineering electric wires and cables of circuits of electrical installations of the general industrial purpose calculation selection of allowable sections of wires and cables in the circuits of electrical equipment 621.3.022 621.315.3 537.311.8 |
| format |
Article |
| author |
Baranov, M. I. |
| author_facet |
Baranov, M. I. |
| author_sort |
Baranov, M. I. |
| title |
REFINED SELECTION OF ALLOWABLE CROSS-SECTIONS OF ELECTRICAL CONDUCTORS AND CABLES IN THE POWER CIRCUITS OF INDUSTRIAL ELECTRICAL EQUIPMENT TAKING INTO ACCOUNT EMERGENCY OPERATING MODES |
| title_short |
REFINED SELECTION OF ALLOWABLE CROSS-SECTIONS OF ELECTRICAL CONDUCTORS AND CABLES IN THE POWER CIRCUITS OF INDUSTRIAL ELECTRICAL EQUIPMENT TAKING INTO ACCOUNT EMERGENCY OPERATING MODES |
| title_full |
REFINED SELECTION OF ALLOWABLE CROSS-SECTIONS OF ELECTRICAL CONDUCTORS AND CABLES IN THE POWER CIRCUITS OF INDUSTRIAL ELECTRICAL EQUIPMENT TAKING INTO ACCOUNT EMERGENCY OPERATING MODES |
| title_fullStr |
REFINED SELECTION OF ALLOWABLE CROSS-SECTIONS OF ELECTRICAL CONDUCTORS AND CABLES IN THE POWER CIRCUITS OF INDUSTRIAL ELECTRICAL EQUIPMENT TAKING INTO ACCOUNT EMERGENCY OPERATING MODES |
| title_full_unstemmed |
REFINED SELECTION OF ALLOWABLE CROSS-SECTIONS OF ELECTRICAL CONDUCTORS AND CABLES IN THE POWER CIRCUITS OF INDUSTRIAL ELECTRICAL EQUIPMENT TAKING INTO ACCOUNT EMERGENCY OPERATING MODES |
| title_sort |
refined selection of allowable cross-sections of electrical conductors and cables in the power circuits of industrial electrical equipment taking into account emergency operating modes |
| title_alt |
УТОЧНЕННЫЙ ВЫБОР ДОПУСТИМЫХ СЕЧЕНИЙ ЭЛЕКТРИЧЕСКИХ ПРОВОДОВ И КАБЕЛЕЙ В СИЛОВЫХ ЦЕПЯХ ПРОМЫШЛЕННОГО ЭЛЕКТРООБОРУДОВАНИЯ С УЧЕТОМ АВАРИЙНЫХ РЕЖИМОВ РАБОТЫ |
| description |
Purpose. Implementation and clarification of the existing engineering approach for determination in industrial power engineering for allowable sections of cable-conductor products (CCP) Sil of electric wires and cables in the circuits of electrical equipment of the general industrial installations characterized flowing in malfunction of current ik(t) of short circuit (SC) with different amplitude-temporal parameters (ATPs). Methodology. Scientific and technical bases of electrical power engineering, electrophysics bases of technique of high voltage and high pulse currents, theoretical bases of the electrical engineering. Results. The results of the developed engineering approach are resulted in the calculation determination on the condition of thermal resistibility of CCP permissible sections of Sil of the uninsulated wires, insulated wires and cables with copper (aluminum) cores (shells), polyvinyl chloride (PVC), rubber (R) and polyethylene (PET) insulation, on which in malfunction of their operation the current ik(t) of SC can flow with the set by normative documents of ATP. It is shown that divergence between the values of basic calculation coefficient of Cik by existing and offered to the engineering calculations selection of permissible sections of Sil of cores (shells) of the tested wires and cables for normal of their operating time at the nominal current load of CCP makes no more (3-8) %, and in the mode of de-energizing of CCP arrives at to (9-26) %.. Analytical correlation is got for the specified calculation determination of integral of action of Jak of current ik(t) of SC (Joule integral) in the power circuits of the tested electrical equipment. It is set that in the circuits of of the general industrial installations (for permanent time of slump of Ta=20 ms of aperiodic constituent of current of SC) maximum possible amplitudes of density of δilm≈Imk/Sil of SC current at time of his disconnecting tkC=100 ms for the uninsulated wires with copper (aluminum) cores make according to approximately 0.64 (0.36) кА/mm2, for cables with copper (aluminum) cores (shells), PVC and R insulation – 0.47 (0.30) кА/mm2, and for cables with copper (aluminum) cores ( shells) and PET insulation – 0.39 (0.25) кА/mm2. At time of disconnecting tkC=160 ms of SC current in the circuits of electrical equipment (Ta=20 ms) permissible amplitudes of current density of δilm of SC for the unsuolated wires with copper and aluminum cores are accordingly about 0.52 (0.29) кА/mm2, for cables with copper (aluminum) cores (shells), PVC and R insulation of 0.39 (0.25) кА/mm2, and for cables with copper (aluminum) cores (shells) and PET insulation – 0.32 (0.21) кА/mm2. Originality. First by a calculation the specified numeral values of sections of Sil and amplitudes of density δilm of SC current are determined for the uninsulated wires, insulated wires and cables with copper (aluminum)cores shells), PVC, R and PET insulation. New analytical correlation is offered for the calculation estimation of thermal resistibility of tested CCP to the action of current of SC. Practical value. The obtained results will be useful in the increase of thermal resistibility of CCP with copper (aluminum) cores (shells), PVC, R and PET insulation, widely applied in the power circuits of electrical equipment of the general purpose industrial installations. |
| publisher |
National Technical University "Kharkiv Polytechnic Institute" and State Institution “Institute of Technical Problems of Magnetism of the National Academy of Sciences of Ukraine” |
| publishDate |
2019 |
| url |
http://eie.khpi.edu.ua/article/view/2074-272X.2019.3.06 |
| work_keys_str_mv |
AT baranovmi refinedselectionofallowablecrosssectionsofelectricalconductorsandcablesinthepowercircuitsofindustrialelectricalequipmenttakingintoaccountemergencyoperatingmodes AT baranovmi utočnennyjvybordopustimyhsečenijélektričeskihprovodovikabelejvsilovyhcepâhpromyšlennogoélektrooborudovaniâsučetomavarijnyhrežimovraboty |
| first_indexed |
2024-06-01T14:39:17Z |
| last_indexed |
2024-06-01T14:39:17Z |
| _version_ |
1800670027176738816 |
| spelling |
eiekhpieduua-article-1714342019-06-25T12:05:34Z REFINED SELECTION OF ALLOWABLE CROSS-SECTIONS OF ELECTRICAL CONDUCTORS AND CABLES IN THE POWER CIRCUITS OF INDUSTRIAL ELECTRICAL EQUIPMENT TAKING INTO ACCOUNT EMERGENCY OPERATING MODES УТОЧНЕННЫЙ ВЫБОР ДОПУСТИМЫХ СЕЧЕНИЙ ЭЛЕКТРИЧЕСКИХ ПРОВОДОВ И КАБЕЛЕЙ В СИЛОВЫХ ЦЕПЯХ ПРОМЫШЛЕННОГО ЭЛЕКТРООБОРУДОВАНИЯ С УЧЕТОМ АВАРИЙНЫХ РЕЖИМОВ РАБОТЫ Baranov, M. I. электроэнергетика электрические провода и кабели цепей электроустановок общепромышленного назначения расчетный выбор предельно допустимых сечений проводов и кабелей в цепях электрооборудования 621.3.022 621.315.3 537.311.8 electric power engineering electric wires and cables of circuits of electrical installations of the general industrial purpose calculation selection of allowable sections of wires and cables in the circuits of electrical equipment 621.3.022 621.315.3 537.311.8 Purpose. Implementation and clarification of the existing engineering approach for determination in industrial power engineering for allowable sections of cable-conductor products (CCP) Sil of electric wires and cables in the circuits of electrical equipment of the general industrial installations characterized flowing in malfunction of current ik(t) of short circuit (SC) with different amplitude-temporal parameters (ATPs). Methodology. Scientific and technical bases of electrical power engineering, electrophysics bases of technique of high voltage and high pulse currents, theoretical bases of the electrical engineering. Results. The results of the developed engineering approach are resulted in the calculation determination on the condition of thermal resistibility of CCP permissible sections of Sil of the uninsulated wires, insulated wires and cables with copper (aluminum) cores (shells), polyvinyl chloride (PVC), rubber (R) and polyethylene (PET) insulation, on which in malfunction of their operation the current ik(t) of SC can flow with the set by normative documents of ATP. It is shown that divergence between the values of basic calculation coefficient of Cik by existing and offered to the engineering calculations selection of permissible sections of Sil of cores (shells) of the tested wires and cables for normal of their operating time at the nominal current load of CCP makes no more (3-8) %, and in the mode of de-energizing of CCP arrives at to (9-26) %.. Analytical correlation is got for the specified calculation determination of integral of action of Jak of current ik(t) of SC (Joule integral) in the power circuits of the tested electrical equipment. It is set that in the circuits of of the general industrial installations (for permanent time of slump of Ta=20 ms of aperiodic constituent of current of SC) maximum possible amplitudes of density of δilm≈Imk/Sil of SC current at time of his disconnecting tkC=100 ms for the uninsulated wires with copper (aluminum) cores make according to approximately 0.64 (0.36) кА/mm2, for cables with copper (aluminum) cores (shells), PVC and R insulation – 0.47 (0.30) кА/mm2, and for cables with copper (aluminum) cores ( shells) and PET insulation – 0.39 (0.25) кА/mm2. At time of disconnecting tkC=160 ms of SC current in the circuits of electrical equipment (Ta=20 ms) permissible amplitudes of current density of δilm of SC for the unsuolated wires with copper and aluminum cores are accordingly about 0.52 (0.29) кА/mm2, for cables with copper (aluminum) cores (shells), PVC and R insulation of 0.39 (0.25) кА/mm2, and for cables with copper (aluminum) cores (shells) and PET insulation – 0.32 (0.21) кА/mm2. Originality. First by a calculation the specified numeral values of sections of Sil and amplitudes of density δilm of SC current are determined for the uninsulated wires, insulated wires and cables with copper (aluminum)cores shells), PVC, R and PET insulation. New analytical correlation is offered for the calculation estimation of thermal resistibility of tested CCP to the action of current of SC. Practical value. The obtained results will be useful in the increase of thermal resistibility of CCP with copper (aluminum) cores (shells), PVC, R and PET insulation, widely applied in the power circuits of electrical equipment of the general purpose industrial installations. Приведены результаты разработанного инженерного электротехнического подхода к уточненному расчетному выбору предельно допустимых сечений Sil электрических неизолированных проводов, изолированных проводов и кабелей с поливинилхлоридной (ПВХ), резиновой (Р) и полиэтиленовой (ПЭТ) изоляцией и медными (алюминиевыми) жилами (оболочками) по условию их термической стойкости, по которым в силовых цепях электроустановок общепромышленного назначения в аварийном режиме протекает ток ik(t) короткого замыкания (КЗ) с заданными параметрами. На основании этого подхода осуществлен уточненный выбор сечений Sil для указанных проводов (кабелей) силовых цепей исследуемого электрооборудования. Выполнена расчетная оценка предельно допустимых амплитуд плотностей δilm тока ik(t) КЗ в рассматриваемых проводах и кабелях силовых цепей указанных электроустановок. Полученные результаты будут способствовать повышению термической стойкости электрических неизолированных проводов, изолированных проводов и кабелей с ПВХ, Р и ПЭТ изоляцией и медными (алюминиевыми) жилами (оболочками), широко применяемых в силовых цепях электроустановок общепромышленного назначения. National Technical University "Kharkiv Polytechnic Institute" and State Institution “Institute of Technical Problems of Magnetism of the National Academy of Sciences of Ukraine” 2019-06-25 Article Article application/pdf application/pdf http://eie.khpi.edu.ua/article/view/2074-272X.2019.3.06 10.20998/2074-272X.2019.3.06 Electrical Engineering & Electromechanics; No. 3 (2019); 37-43 Электротехника и Электромеханика; № 3 (2019); 37-43 Електротехніка і Електромеханіка; № 3 (2019); 37-43 2309-3404 2074-272X en uk http://eie.khpi.edu.ua/article/view/2074-272X.2019.3.06/171130 http://eie.khpi.edu.ua/article/view/2074-272X.2019.3.06/171131 Copyright (c) 2019 M. I. Baranov https://creativecommons.org/licenses/by-nc/4.0 |