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...

Descripción completa

Guardado en:

Detalles Bibliográficos
Autor principal:	M. I. Baranov
Formato:	article
Lenguaje:	EN RU UK
Publicado:	National Technical University "Kharkiv Polytechnic Institute" 2019
Materias:	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 Electrical engineering. Electronics. Nuclear engineering TK1-9971
Acceso en línea:	https://doaj.org/article/e809280dc40b4dc8a9f4e653c3d47de7
Etiquetas:	Agregar Etiqueta Sin Etiquetas, Sea el primero en etiquetar este registro!

id	oai:doaj.org-article:e809280dc40b4dc8a9f4e653c3d47de7
record_format	dspace
institution	DOAJ
collection	DOAJ
language	EN RU UK
topic	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 Electrical engineering. Electronics. Nuclear engineering TK1-9971
spellingShingle	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 Electrical engineering. Electronics. Nuclear engineering TK1-9971 M. I. Baranov 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
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.
format	article
author	M. I. Baranov
author_facet	M. I. Baranov
author_sort	M. I. Baranov
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
publisher	National Technical University "Kharkiv Polytechnic Institute"
publishDate	2019
url	https://doaj.org/article/e809280dc40b4dc8a9f4e653c3d47de7
work_keys_str_mv	AT mibaranov refinedselectionofallowablecrosssectionsofelectricalconductorsandcablesinthepowercircuitsofindustrialelectricalequipmenttakingintoaccountemergencyoperatingmodes
_version_	1718380941410304000
spelling	oai:doaj.org-article:e809280dc40b4dc8a9f4e653c3d47de72021-12-02T17:25:26ZREFINED SELECTION OF ALLOWABLE CROSS-SECTIONS OF ELECTRICAL CONDUCTORS AND CABLES IN THE POWER CIRCUITS OF INDUSTRIAL ELECTRICAL EQUIPMENT TAKING INTO ACCOUNT EMERGENCY OPERATING MODES10.20998/2074-272X.2019.3.062074-272X2309-3404https://doaj.org/article/e809280dc40b4dc8a9f4e653c3d47de72019-06-01T00:00:00Zhttp://eie.khpi.edu.ua/article/view/2074-272X.2019.3.06/171130https://doaj.org/toc/2074-272Xhttps://doaj.org/toc/2309-3404Purpose. 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.M. I. BaranovNational Technical University "Kharkiv Polytechnic Institute"articleelectric power engineeringelectric wires and cables of circuits of electrical installations of the general industrial purposecalculation selection of allowable sections of wires and cables in the circuits of electrical equipmentElectrical engineering. Electronics. Nuclear engineeringTK1-9971ENRUUKElectrical engineering & Electromechanics, Iss 3, Pp 37-43 (2019)

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

Ejemplares similares