On Fri, Jan 9, 2009 at 10:20 AM, Roger Weichert <rweicher@bigpond.net.au> wrote:
>> In my previous job, my colleague was involved in the development
>> of the lightening barriers. I believe that Gas Discharge Tube was
>> used along with other components.
>> http://www.am.pepperl-fuchs.com/products/productsubfamily.jsp?division=PA&productsubfamily_id=1328
>>
> Thanks for the leads Xiaofan  ...  I should be able to recommend a
> protection device from that lot.
>
> Because the communications line is located around the circumference of the
> dairy  ...  a length of over 60 metres   ...  should there be more than one
> of these devices  ...  or should one suffice?
>
I am not familiar with the application of lightening barriers. Maybe
you can give them a call.

I know they are often used here in Asia where lightening is a
really a big problem. My friend from Dallas visited Singapore in
November and he told me lightening was so close to the balcony
of his hotel room (56th Floor in CBD area) that he was really
frightened the first evening.

Xiaofan
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