Experimental validation of a thermal model for the ampacity derating of electric cables in wrapped trays

Author

de Cassia A.Figueiredo, R. ; Carneiro, Sandoval, Jr. ; Cruz, Manuel Ernani C

Author_Institution

Eletronucl.-Eletrobras Termonucl. SA, Rio de Janeiro, Brazil

Volume

14

Issue

3

fYear

1999

fDate

7/1/1999 12:00:00 AM

Firstpage

735

Lastpage

742

Abstract

As a safety measure for certain applications in nuclear power stations, cable trays must be wrapped with a fireproof material. In this paper a new implementation of a thermal model is presented, suitable for the determination of the ampacity derating of electric cables in wrapped trays. Model simulation predictions have been compared with field tests to validate the model. Better agreement between simulations and experimental results is obtained when the standard procedure to determine the power loss in the cable mass is modified to account for the actual measured height of the cable mass in the tray

Keywords

electric conduits; flameproofing; nuclear power stations; power cables; sensitivity analysis; ampacity derating; cable trays; electric cables; field tests; fire protection; fireproof material; insulated conductors; model simulation predictions; nuclear power stations; power loss determination; safety measure; sensitivity analysis; thermal model; wrapped trays; Cable insulation; Conducting materials; Heat transfer; Nuclear measurements; Power generation; Power measurement; Predictive models; Protection; Temperature; Testing;

fLanguage

English

Journal_Title

Power Delivery, IEEE Transactions on

Publisher

ieee

ISSN

0885-8977

Type

jour

DOI

10.1109/61.772308

Filename

772308