[RE-wrenches] Fwd: Grounding on a glacier??

[toddcory at finestplanet.com]

NASA had a similar problem on the space station. They used (I think - research this) some kind of static discharge unit on the exterior of the station.

Todd



On Wednesday, July 22, 2009 6:13am, "jason pozner" <zzyyzzx11 at gmail.com> said:






Hey all,

I am trying to figure out how to mitigate problems found with a 12v 500w simple DC system without a ground.  This system is at 14,500' on Denali (Mt McKinly).  We experienced a somewhat "festive" fireworks display on the 4th of July as static current from a storm seemed to travel through one of the antennae, and energized some radio equipment.  There is no grounded conductor, as there is no grounding electrode, as there is no ground to put it in.  The camp is situated on about 500' of glacial ice.  The conductivity of the ice is questionable, and to make the puzzle a bit more fun the camp is raised and taken down at the beginning and end of every climbing season (Apr-July), though the site is the same.  The loads are primarily for communications for search and rescue purposes, and  reliability, and simplicity are paramount.  I have been exploring the avenue of a surge arrestorsThanks, and was wondering if any of you could make a recommendation on a product that can either be reset or cheap enough to have a few replacements on hand.  Everything is flown in or carried to the site, and repair/replacement needs to be simple enough so non-technical minded personnel can perform and re-set the system.

Thanks,

Jay Pozner
Nunatak Alternative Energy Solutions
Crested Butte, CO
(970) 349-3432
[mailto:nunatakenergy at gmail.com] nunatakenergy at gmail.com




-- 
Nunatak Alternative Energy Solutions
Jay Pozner and Lena Wilensky
(970)349-3432
[http://www.nunatakenergy.com] www.nunatakenergy.com

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