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Air terminations for lightning protection of structures

Farag, A.S. and Shwehdi, M. and Belhadj, C.A. and Cheng, T.C. and Penn, D. (1998) Air terminations for lightning protection of structures. Electrical Insulation and Dielectric Phenomena, 1998. Annual Report. conference, 1.

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Abstract

The most recent knowledge on physics of discharges derived from researchers on long air gap sparks is considered to assess the conditions for the inception of upward leaders from earthed structures. The protection angles of rods or wires are determined by means of simplified physical models of lightning which takes into account the electric field on earthed objects. Shielding criteria is then defined which takes into account the risk of damage of the protected structure related with the statistical distributions of the lightning parameters involved in the phenomenon. Spacing between air terminations and protected structure to withstand induced voltage stresses is examined. Thermal effects at the impact point are summarized and practical sizing of air-termination elements are given



Item Type:Article
Date:October 1998
Date Type:Publication
Subjects:Computer
Divisions:College Of Engineering Sciences > Electrical Engineering Dept
Creators:Farag, A.S. and Shwehdi, M. and Belhadj, C.A. and Cheng, T.C. and Penn, D.
ID Code:14371
Deposited By:KFUPM ePrints Admin
Deposited On:24 Jun 2008 16:33
Last Modified:12 Apr 2011 13:15

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