Dimensioning components installed in electrical panels with respect to operational temperature

Aronis, CG; Karagiannopoulos, CG; Bourkas, PD; Theodorou, NJ

dc.contributor.author	Aronis, CG	en
dc.contributor.author	Karagiannopoulos, CG	en
dc.contributor.author	Bourkas, PD	en
dc.contributor.author	Theodorou, NJ	en
dc.date.accessioned	2014-03-01T01:22:12Z
dc.date.available	2014-03-01T01:22:12Z
dc.date.issued	2005	en
dc.identifier.issn	1350-2344	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/16484
dc.subject.classification	Engineering, Electrical & Electronic	en
dc.subject.other	Differential equations	en
dc.subject.other	Electric circuit breakers	en
dc.subject.other	Electric connectors	en
dc.subject.other	Electric fuses	en
dc.subject.other	Heat transfer	en
dc.subject.other	Laplace transforms	en
dc.subject.other	Mass transfer	en
dc.subject.other	Mathematical models	en
dc.subject.other	Surfaces	en
dc.subject.other	Temperature distribution	en
dc.subject.other	Thermodynamic stability	en
dc.subject.other	Component-conductor system	en
dc.subject.other	Dimensioning components	en
dc.subject.other	Disconnectors	en
dc.subject.other	Electrical panels	en
dc.subject.other	Fuse disconnectors	en
dc.subject.other	Fuse holders	en
dc.subject.other	Operational temperature	en
dc.subject.other	Electric conductors	en
dc.title	Dimensioning components installed in electrical panels with respect to operational temperature	en
heal.type	journalArticle	en
heal.identifier.primary	10.1049/ip-smt:20051103	en
heal.identifier.secondary	http://dx.doi.org/10.1049/ip-smt:20051103	en
heal.language	English	en
heal.publicationDate	2005	en
heal.abstract	Circuit breakers, disconnectors, fuse disconnectors and fuse holders installed in LV electric panels sometimes suffer overheating, mainly due to inadequate dissipation of the heat generated. A theoretical and experimental investigation is attempted of the mechanisms that can affect heat transfer to a component-conductor system, as well the mass and the external surface area of the component. The resulting system of differential equations is solved using the Laplace transform in the s-plane. The time-dependent temperature distribution in the component-conductor system is provided by an analytical expression, and a simple formula is given for the component's stabilised temperature. Results from the models are compared with experimental measurements performed on a fuse holder and are shown to be consistent. The model accuracy is also investigated. It is convincingly shown that excessive (or additional) external surface area of the component's metallic parts reduces the component temperature. Above a certain level, this can make the component act as a cooler of the conductor. In addition, an increase of the component's mass slows temperature stabilisation. The proposed model could effectively support component design as it involves all the technical characteristics of the system, so that the requirements of international standards are fulfilled in relation to the prevention of overheating. © IEE, 2005.	en
heal.publisher	IEE-INST ELEC ENG	en
heal.journalName	IEE Proceedings: Science, Measurement and Technology	en
dc.identifier.doi	10.1049/ip-smt:20051103	en
dc.identifier.isi	ISI:000227279300007	en
dc.identifier.volume	152	en
dc.identifier.issue	1	en
dc.identifier.spage	36	en
dc.identifier.epage	42	en