Document Type

Article

Publication Date

1980

Abstract

Due to eddy currents, high temperatures often occur in structural parts adjacent to conductors carrying large currents. This paper deals with this problem and specifically with the minimum safe height and orientation of steel beams in a reinforced concrete ceiling above a three-phase transformer delta closure.

The power losses in the steel members due to induced eddy currents are calculated, from which the temperature increases are determined,

properly accounting for convection and radiation effects. The methods presented are substantiated by experimental data and applied to a practical installation.

Comments

Online version of an article originally published as: Induced Heating in Steel-Beam Reinforced Ceilings over Three-Phase Transformer Delta Closures Ryff, P.F. Bulat, V. IEEE Transactions on Power Apparatus and Systems, Nov. 1980 Volume: PAS-99 , Issue: 6: 2448 - 2452 Digital Object Identifier: 10.1109/TPAS.1980.319812