Influence of the Ventilation Apertures on Low Voltage Switchboard Heating

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Abstract:

The paper presents a computer model, developed in the software programme Comsol, for studying the influence of the ventilation apertures on low voltage (LV) switchboard heating. Results have been obtained, concerning the distribution of the LV switchboard thermal field and air velocity field in cases of closed LV switchboards and switchboards with ventilation apertures both at natural and forced ventilation. The influence of the ventilation apertures location, as well as of the air velocity at forced ventilation, on heating the current carrying circuits in the LV switchboard has been studied.

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368-373

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May 2016

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© 2016 Trans Tech Publications Ltd. All Rights Reserved

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[1] IEC 60947-1: 2007 Low-voltage switchgear and controlgear – Part 1: General rules.

Google Scholar

[2] IEC 61439-1: 2011 Low-voltage switchgear and contolgear assemblies – Part 1: General rules.

Google Scholar

[3] IEC 60890 – A method of temperature-rise assessment by extrapolation for partially type-tested assemblies (PTTA) of low-voltage switchgear and cоntrolgear.

Google Scholar

[4] Overtemperature calculation tool, User's Guide, ABB, (2008).

Google Scholar

[5] COMSOL Version 4. 2, User's guide, (2011).

Google Scholar

[6] I. Hadzhiev, D. Malamov, I. Yatchev: Influence of overall dimensions and materials of a switchboard on the thermal field distribution, Proceedings of the XVIII-th International Symposium on Electrical Apparatus and Technologies – SIELA 2014, Bourgas, Bulgaria, pp.73-76.

DOI: 10.1109/siela.2014.6871860

Google Scholar

[7] I. Hadzhiev: Influence of the cooling conditions on heating a low voltage switchboard, VI-th scientific conference, Sozopol 2014, Bulgaria.

Google Scholar

[8] I. Yatchev, D. Malamov, I. Hadzhiev: Simplified Thermal Model of an Automatic Circuit Breaker, Proceedings of Technical University of Sofia, Volume 63, Issue 5, 2013, pp.399-407.

Google Scholar