NDLI: Direct Lightning Strikes to the Lightning Protective System of a Residential Building: Triggered-Lightning Experiments

Content Provider	IEEE Xplore Digital Library
Author	Rakov, V. A. Uman, M. A. Fernandez, M. I. Mata, C. T. Rambo, K. J. Stapleton, M. V. Sutil, R. R.
Copyright Year	1981
Abstract	Lightning triggered from natural thunderclouds using the rocket-and-wire technique was employed in order to subject to direct lightning strikes the lightning protective system of a test house at the Intemational Center for Lightning Research and Testing (ICLRT) at Camp Blending, Florida. The electrical circuit of the test house was connected to the secondary of a padmount distribution transformer located a distance of about 50 m from the house. The transformer primary was connected to a 650-m long unenergized underground power cable. The test house had two ground rods, one for the lightning protective system grounding and the other for the power supply system grounding. The two rods were about 3 m apart and were connected by a metallic cable. Lightning current was injected into the lightning protective system ground rod, and the currents and voltages at different points in the test system were measured. The waveshapes of currents in the ground rods of the test house differed markedly from the current waveshapes in other parts of the overall system. The ground rods at the test house appeared to filter out the higher-frequency components of the lightning current, allowing the lower-frequency components of the current to enter the house's electrical circuit; that is, the ground rods appeared to exhibit a capacitive behavior rather than the often expected resistive behavior. This effect was observed for dc grounding resistances of the rods (driven in sandy soil with conductivity of about 2.
Starting Page	63
Ending Page	63
Page Count	1
File Size	409773
File Format	PDF
ISSN	02721724
Volume Number	22
Issue Number	2
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2002-02-01
Publisher Place	U.S.A.
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Lightning Circuit testing System testing Grounding Power system protection Underground power cables Power supplies Power cables Voltage Current measurement surge protective devices ground rods lightning protective system
Content Type	Text
Resource Type	Article
Subject	Electrical and Electronic Engineering

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