Scheduled System Maintenance:
On Wednesday, July 29th, IEEE Xplore will undergo scheduled maintenance from 7:00-9:00 AM ET (11:00-13:00 UTC). During this time there may be intermittent impact on performance. We apologize for any inconvenience.
By Topic

Transient-Voltage Aspects of Grounding

Sign In

Cookies must be enabled to login.After enabling cookies , please use refresh or reload or ctrl+f5 on the browser for the login options.

Formats Non-Member Member
$31 $13
Learn how you can qualify for the best price for this item!
Become an IEEE Member or Subscribe to
IEEE Xplore for exclusive pricing!
close button

puzzle piece

IEEE membership options for an individual and IEEE Xplore subscriptions for an organization offer the most affordable access to essential journal articles, conference papers, standards, eBooks, and eLearning courses.

Learn more about:

IEEE membership

IEEE Xplore subscriptions

2 Author(s)
Brinner, T.R. ; PM&D Eng., Inc., Broken Arrow, OK, USA ; Durham, R.A.

Lightning damages millions of dollars of electrical equipment each year. With the protective devices currently available, this should not happen. Unfortunately, in most cases, little consideration is given to the effects of grounding on the effectiveness of surge suppression. When the surge suppression device cannot be directly connected at the terminals of the equipment to be protected, the impedance of the connecting means must be examined. High ground resistance and lead inductance greatly diminish the effectiveness of surge suppression. This paper describes a circuit approach to lightning protection starting with a discussion of infinite ground, ground resistance, and lead inductance. These concepts are then applied to various types of pole-top grounding. Normally, the grounding terminal of transformer secondary windings connects to the common terminal of the lightning arresters. This is demonstrated to be a central cause for much of the ensuing damage. Usually, several surge suppression devices are connected to a single ground wire, and the transient voltages on that wire not only reduce the effectiveness of the devices but, because of their bilateral characteristics, can also actually cause damage. Multiple ground wires terminating on a primary low-resistance ground have proven very effective in minimizing equipment damage. The integrity of ground bonding for personnel safety is still preserved. The only alteration is how and where ground wires are connected. This solution greatly increases the efficacy of lightning protection, without sacrificing safety or code compliance.

Published in:

Industry Applications, IEEE Transactions on  (Volume:46 ,  Issue: 5 )