Determination of heat circumstances in the motor protection switch considering air flow

Author

Hrovat, G. ; Hamler, A.

Author_Institution

Fac. of Electr. Eng. & Comput. Sci., Maribor Univ.

Volume

42

Issue

4

fYear

2006

fDate

4/1/2006 12:00:00 AM

Firstpage

1071

Lastpage

1074

Abstract

This paper presents the determination of heat conditions in the motor protection switch, with consideration to the air flow inside the switch. The finite-element method (FEM) was used for the calculation of the temperature conditions. Because of the temperature-dependent material properties and the geometrical peculiarities of the model, a sequential procedure for the calculation of the heat circumstances was developed. The specificity of the model is that the inside air is separated into two domains. These two domains are physically completely separated, but they have an indirect influence on each other through the thermal conductivity of partition walls

Keywords

finite element analysis; switchgear protection; temperature distribution; air flow; finite element method; heat circumstances; motor protection switch; switchgear; thermal conductivity; Finite element methods; Heat transfer; Laplace equations; Numerical models; Protection; Resistance heating; Solids; Switches; Temperature; Thermal conductivity; Finite-element method (FEM); fluid flow; switchgear;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/TMAG.2006.871620

Filename

1608395