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treichhart
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solar setup question.

Hey Guys
I am going probably going to be on a water tower that doesnt have any electrical setup so I was figured using solar.
The water tower is going to be my core tower and here is the plans for right now and add more equipment down the road:
6 rockets = 3 rockets m2's and 3 rockets m5's
1 nanobridge m5.
Routerboard 750 G and maybe a switch also.
so the question is what size of battery and solar panel I need.
my location is currently in coldwater, ohio.
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Dave-D
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Re: solar setup question.

I would use a real big one. Dave
No disclaimer. Nothing to sell. I need to fix that.
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urmom
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Re: solar setup question.

I would use a real big one. Dave


agreed.

but maybe get a girl to say what a 'real big one' is. Men aren't very good with measurements.
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Dave-D
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Re: solar setup question.

You have to hand it to the girls! Dave
No disclaimer. Nothing to sell. I need to fix that.
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WHT
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Re: solar setup question.

but maybe get a girl to say what a 'real big one' is. Men aren't very good with measurements.
Excuse me ?!?!?!?!?!?! :manhappy:
WHT = Short Form Acronym for "You couldn't handle me even if I came with instructions!"
Well engineered projects are indistinguishable from crazy ideas.

Speed, distance, reliability, cost...Pick three.
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urmom
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Re: solar setup question.

Excuse me ?!?!?!?!?!?! :manhappy:


haha. yes! its true.

I've met some guys that think 3 inches are equal to 8. if you know what i mean.
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vst_man
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Re: solar setup question.

tycon has a neat solar charger....packetflux for the PoE, Mikrotik, (2) 215watt solar panels, and (4) 12vdc 110Ah AGM batteries. Run all at 12vdc. some other things to look at; samlex BBM-1225, tycon TP-DCDC-1248D, web din controlled relay.

Build your solar BIGger than you need on paper.....you'll be happier knowing it's built to outlast the wqorst conditions.
Lick'n Chicken :icon_wink:
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walrus0
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Re: solar setup question.

for that size of site with six rockets and a mikrotik, in the dead middle of winter you need to be concerned about the cumulative monthly kWh produced by your panels in december and january. I would not install it with less than two 280W solar modules and a good quality charge controller.
If you have a particularly unique or challenging project, professional consulting services are available in central Asia, south Asia (AF, PK, IN, BD) and the Vancouver, BC area. Please contact me for more details.
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treichhart
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Re: solar setup question.

the reason why i was asking this because I dont know how much it would cost me to get electric installed at the tower.
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urmom
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Re: solar setup question.

the reason why i was asking this because I dont know how much it would cost me to get electric installed at the tower.


there are PLENTY of online calculators for exactly what you're asking about.

here's one:

tyconpower.com/learning_center/learning_center.htm
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Dave-D
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Re: solar setup question.

There is one way to find out how
much it would cost to get some
power installed. Call a local
electrician and ask.

That was a flash idea I had. Dave
No disclaimer. Nothing to sell. I need to fix that.
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urmom
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Re: solar setup question.

There is one way to find out how
much it would cost to get some
power installed. Call a local
electrician and ask.

That was a flash idea I had. Dave


I wish i could give you cred for this.
you just made me fall in love with you
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EasyNet
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Re: solar setup question.

Im assuming your backhauling to there for bandwidth? So there wont be any other circuit equipment?
2-230watt Canadian Solar Panel and a 30amp morning star charge controller. I would recommend running a 24 volt setup(make sure you get panels with 40 plus volts output) so you can power everything straight off the charge controller. Then you would need about 600 amp hours worth of deep cycle batteries.
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treichhart
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Re: solar setup question.

Dave from what I was told it would have to be installed by the power company.
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Dave-D
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Re: solar setup question.

I got this new flash, Tim:

Call the local power company
and ask how much it will cost
to get power at that place. Dave
No disclaimer. Nothing to sell. I need to fix that.
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Nanflexal
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Re: solar setup question.

compute the total power of 6 Rocket M and nanobridge and RB (in watts) then multiply it by 24 hours and add 3 to 6 days backup power from your solar panel. Motolite SOlar master is base on 50% discharge and 20 hours capacity.
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walrus0
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Re: solar setup question.

I would suggest doing it backwards from nanflexal's suggestion. Use PVwatts:
rredc.nrel.gov/solar/calculators/PVWATTS/version1/
Calculate the cumulative kWh you'll generate in one month using an example solar setup, such as two 280W or two 295W modules.
pvwatts does not work with less than 1000W setups, so for 590W of solar panels, give it an example 1000W setup and then multiply all the results by 0.59.
once you have the monthly kWh production values for your site, particularly in december and january, you'll know how much power your set of two 295W solar panels will produce in one month.
then, take the cumulative kWh of all your rocket M5 and other devices over one month, and be sure that it's not greater than 65% of your december and january kWh produced by the solar array.
example:
8W devices x 6 devices = 48W constant load 24 hours a day
0.048 kW * 24 hours = 1.152 kWh consumed by load per day
1.152 * 30 days = 34.56 kWh consumed by load per month
add margin:
34.56 * 1.35 = 46.50 kWh per month generation capacity required.
If you have a particularly unique or challenging project, professional consulting services are available in central Asia, south Asia (AF, PK, IN, BD) and the Vancouver, BC area. Please contact me for more details.
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rockhead
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Re: solar setup question.

I would recommend running a 24 volt setup(make sure you get panels with 40 plus volts output) so you can power everything straight off the charge controller.


I suppose smoking all the radios with ~28V is a way to conserve power, but perhaps not a good way. On a 24V NOMINAL system you would a dc to dc converter to limit the output. Once the smoke is out of the chips its really tough to poke it back in.
Gnawing at the ankles of the telecom giants since 2008.
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LittleBill
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Re: solar setup question.

there are PLENTY of online calculators for exactly what you're asking about.

here's one:

tyconpower.com/learning_center/learning_center.htm


thanks for the calc link that thing is perfect for me
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urmom
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Re: solar setup question.

thanks for the calc link that thing is perfect for me


no problem :icon_mrgreen:
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