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Lightning impacts on OM1P and Pico 2

 
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coranet
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PostPosted: Mon May 07, 2012 4:06 pm    Post subject: Lightning impacts on OM1P and Pico 2 Reply with quote

We have installed a 20 node Open-Mesh network in an RV park in the mountains of Colorado. Elevation 9,000 ft. (See it on Cloudtrax at CORA). This network has been in place for three years. We installed both OM1P and Pico 2 units. The system has worked well except that, during electrical storms that we have frequently in the summer, we had lost over 10 units (both OM1Ps and Pico2). They have either failed completely or the receiver front end has been damaged.

We have mounted them on grounded steel poles and have plugged the power modules into lightning arrestors. Still are seeing failures.

Has anyone seen these kinds of problems and, if so, what do you do to resolve the problem?
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codyc1515
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PostPosted: Tue May 08, 2012 1:11 am    Post subject: Reply with quote

You should be using a Outdoor Shielded Ethernet. Other than that, if they are on poles at that elevation there is probably not a lot that you can do. What I have seen people do before is have a longer metal bar extending above the node that should receive a lightning strike instead of the node. You will see that cellphones towers tend to do this.

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coranet
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PostPosted: Tue May 08, 2012 3:17 pm    Post subject: Reply with quote

These units have not been directly stuck. The units that recently failed were on steel, grounded poles. I will order RJ45 lightning arrestors to see if this helps. One of our problems is that the upper campground sits on a rocky ridge. The grounding system is very poor.
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webcoaster
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PostPosted: Thu May 10, 2012 6:53 am    Post subject: Reply with quote

Use Shielded outdoor cable with proper ends as noted.
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coranet
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PostPosted: Thu May 10, 2012 4:30 pm    Post subject: Reply with quote

This is an image of a OM1P. Am I missing something?


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coranet
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PostPosted: Thu Jul 12, 2012 11:37 pm    Post subject: Continued problems with weather with OM1P Reply with quote

We have installed shielded cat5 cables/connectors on our OM1P units. Ground rods have also been installed if the grounding was not adequate. Several days ago we had a serious electrical storm and lost at least two units. They still show on the dashboard but the RSSI numbers are really low, and much fewer neighbors. Any thoughts?
We are speculating that the receive section of these units are sensitive to static discharges (ie lightning) and are damaged by it. Open-Mesh claims that no one else (on the planet!) is having these kinds of problems. We have lost (or damage 12 units so far) HELP!
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sronan
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PostPosted: Fri Jul 13, 2012 2:51 am    Post subject: Reply with quote

I was very impressed by your earlier posting with the diagram; nevertheless perhaps you will find a useful tip or two via a google search like:
ubiquiti static discharge lightning
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codyc1515
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PostPosted: Tue Jul 31, 2012 2:08 pm    Post subject: Re: Continued problems with weather with OM1P Reply with quote

coranet wrote:
Open-Mesh claims that no one else (on the planet!) is having these kinds of problems.

That claim sounds incredibly fishy and I have also had units die on me before within months of purchasing, only being used indoors! I have since been using mainly Ubiquiti gear and find it to be more reliable.

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