Talk:Lightning arrester

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Should safety be mentioned in the main article ?[edit]

At first glance it seems the topic of lightning arresters, a subset of the wikicategory "Electrical Safety," would at least mention safety. Lightning strikes can have many byproducts, like electric overvoltage, overstress, over-current, surge, flash-over, arc-over, side-flash, explosion, fire, electromagnetic interference, and electromagnetic pulse, some of which can destroy insulation, but can also affect personnel safety and devices and equipment.

Electrical engineering references however often mention just the protection of insulation and equipment. I guess since arresters deal with non-destructively managing lightning current and lightning's effects closer to points of entry to electrical transmission or distribution systems, the primary concern cited is the protection of insulation from flash. Air terminators, gas discharge devices, metal shielding structures, roof mesh systems, equipotential bonding systems (ensuring metal parts don't have different voltages with respect to each other), and prudently-distanced cable and conductor routing, etc., are used firstly for protection of the electric energy delivery system. These are the first line of defense.

And as lightning effects travel down the transmission line toward the end points -- structures and buildings inhabited or used by people -- mitigation of the effects may be more specific to the traveling surge itself, which can still be of a magnitude to spark, arc, flash over, or side-flash. This secondary collaborative defense then may be the function of surge protection devices, e.g., transient voltage protectors, metal oxide devices, series mode suppressors, used with and in electrical equipment and devices being protected, but may also include some protective solutions mentioned in the paragraph above.

The ideal arrester deals with the overvoltage and current quickly, normalizes quickly, and does not degrade. DonL (talk) 06:23, 6 September 2010 (UTC)[reply]

Inclusion in Surge Protection Devices?[edit]

To my understanding, a Lightning Arrestor provides two functions;

direction stroke termination protection of transmission/distribution systems--> usually results in destruction of arrestor necessitating replacement,
induced current (transient voltage) isolation & routing to earth.

It is primarily used in electric power supply distribution systems (transmission & local distribution) and in such manner is an over-sized SPD, although "Lightning Arrestors" were developed prior to SPD/TVSS/etc designed for residential/commercial/light industrial applications.

I suggest its inclusion as a subcategory of the Surge protector page where lightning characteristics are described relevant to lightning arrestors. Borealdreams (talk) 15:08, 12 March 2012 (UTC)[reply]

Copyright problem removed[edit]

Prior content in this article duplicated one or more previously published sources. The material was copied from: http://electrical-engineering-portal.com/complete-overview-of-lightning-arresters-part-3, which itself seems to violate copyright of this book. Copied or closely paraphrased material has been rewritten or removed and must not be restored, unless it is duly released under a compatible license. (For more information, please see "using copyrighted works from others" if you are not the copyright holder of this material, or "donating copyrighted materials" if you are.) For legal reasons, we cannot accept copyrighted text or images borrowed from other web sites or published material; such additions will be deleted. Contributors may use copyrighted publications as a source of information, but not as a source of sentences or phrases. Accordingly, the material may be rewritten, but only if it does not infringe on the copyright of the original or plagiarize from that source. Please see our guideline on non-free text for how to properly implement limited quotations of copyrighted text. Wikipedia takes copyright violations very seriously, and persistent violators will be blocked from editing. While we appreciate contributions, we must require all contributors to understand and comply with these policies. Thank you. Moonriddengirl ^(talk) 20:27, 17 May 2014 (UTC)[reply]