Change of the thermal profile in the modern MCCB by the different electrical contact resistance

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26220%2F15%3APU115947" target="_blank" >RIV/00216305:26220/15:PU115947 - isvavai.cz</a>

Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Change of the thermal profile in the modern MCCB by the different electrical contact resistance

Popis výsledku v původním jazyce

The paper deals with the change of temperature rise of the MCCB at the steady state. The critical parts under the study are main contacts and contact lever. The movable contact in focus is modern, rotoactive system which moves contact along a circular path and his material is harder than the fixed one. It causes sequential sag of the movable contact followed by a deformation of the fixed one. Consequently, the contact area between the pair of contacts is increasing, but the contact material is losing during the arc quenching. Rests and dirt layers appear on the contact surfaces and causes increase electric and thermal resistances between contacts. Temperature rise of the device with additive layers after arcing increases against new one at the steady state. The profile of the temperature rises are computed using finite volume method (FVM). The first part of the paper focuses on the calculation of the thermal losses of the electrical current path at rated current with the different elec

Název v anglickém jazyce

Change of the thermal profile in the modern MCCB by the different electrical contact resistance

Popis výsledku anglicky

The paper deals with the change of temperature rise of the MCCB at the steady state. The critical parts under the study are main contacts and contact lever. The movable contact in focus is modern, rotoactive system which moves contact along a circular path and his material is harder than the fixed one. It causes sequential sag of the movable contact followed by a deformation of the fixed one. Consequently, the contact area between the pair of contacts is increasing, but the contact material is losing during the arc quenching. Rests and dirt layers appear on the contact surfaces and causes increase electric and thermal resistances between contacts. Temperature rise of the device with additive layers after arcing increases against new one at the steady state. The profile of the temperature rises are computed using finite volume method (FVM). The first part of the paper focuses on the calculation of the thermal losses of the electrical current path at rated current with the different elec

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

BJ - Termodynamika

OECD FORD obor

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Projekt

Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2015

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Plasma Physics and Technology

ISSN

2336-2626

e-ISSN

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Svazek periodika

2

Číslo periodika v rámci svazku

3

Stát vydavatele periodika

CZ - Česká republika

Počet stran výsledku

4

Strana od-do

77-81

Kód UT WoS článku

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EID výsledku v databázi Scopus

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