wireless internet dish/wind turbine tower [RE-wrenches]

[Rick Cullen - RV Power Products]

Solar Boost charge controllers will operate properly with battery positive
earth grounded rather than battery negative.

Rick Cullen
RV Power Products, Inc.
Providing quality MPPT solar charge controllers
Phone 760-597-1642 x102
Fax 760-597-1731

mail to: rick at rvpowerproducts.com
www.rvpowerproducts.com

----- Original Message -----
From: "Tom Simko" <tom at skylinesolar.com>
To: <RE-wrenches at topica.com>
Sent: Tuesday, February 18, 2003 6:43 PM
Subject: Re: wireless internet dish/wind turbine tower [RE-wrenches]


> BOB-O,
>
>  Huh... I didn't catch the minus sign, as in positive ground, got it now,
> thanks for pointing that little detail out! No, never done telecom before,
I
> will forge ahead with this assuming all loads will be as you say, from my
SW
> inverter powering their power supply. I'm still on the hook, waiting to
hear
> back on the $$ offer. My place is still their best choice last I heard.
>
> Tom Simko
> Skyline Solar
>
> on 2/18/03 7:36 AM, Bob-O Schultze, Electron Connection at
> econnect at snowcrest.net wrote:
>
> > Tom,
> > Dunno if you've ever done a telecom before, but when they say they
> > want -48VDC, that's what they mean-as in a positive ground system.
> > And THAT, honey, ain't so simple. You can find charge controllers
> > that will handle that, but the selection is poor and forget MPPT. Far
> > better to supply all the loads from your inverter, keep the system
> > grounds separate, and let THEIR power supply sort it out.
> > Bob-O
> >
> >> Tom Simko wrote:
> >>
> >>> Fellow Wrenchs,
> >>> Here's the power requirements for the proposed wireless internet
provider
> >>> dish they want to install on my wind turbine tower, not as bad as I
thought
> >>> it may be, of course it was sunny AND windy today, 2:00 am December 21
st or
> >>> so I may think differently!
> >>>
> >>> I plan to make them an offer they can't refuse: that I set them up
with an
> >>> autonomous PV powered system, with my own home off grid system as a
backup.
> >>> Also, I will move the proposed site OFF of my wind tower, (and its
potential
> >>> complications) and about 200' away to an outbuilding, where I already
have a
> >>> pole with a windsock about 30' high. I will offer to erect a 40'
length
> >>> (plenty high for their purposes and requirements) of 4" schedule 40
pipe,
> >>> bearing on a concrete footer, grounded of course, and secured to the
hanger
> >>> at about the 25' point, thus no guy wires. This will also allow them
free
> >>> access anytime without going into or around my shop, and its closer to
the
> >>> buried phone lines so it'll save them some money. I'll do all the
required
> >>> work with my own equipment, as its the kind of work I do anyway
(although
> >>> usually not at my own place, it'll be a short commute)!
> >>>
> >>> It appears that a simple 48 VDC PV system, to handle the router loads,
> >>> along with a 48 to 12 VDC converter to handle the 12 volts required by
the
> >>> radio unit, ought to do it. Then again.....It may be simpler to equip
my
> >>> 24VDC home system with 48 VDC and 12VDC converters, and supply all the
power
> >>> neeed from my main power center. I'm open to suggestions and comments.
My
> >>> home system is up to the job, I havn't used a generator for a couple
years
> >>> now. Below is the wireless ISP'rs requirements.
> >>>
> >>>
> >>> "I have looked at equipment that we may install at your location. The
> >>> equipment is not finalized yet as to manufacturer so I am giving you
what I
> >>> would consider maximums at this time.
> >>>
> >>> The router (Cisco systems, model 2621) 110VAC @1.5 amps 75w or if I
can
> >>> get it with a DC power module -38 to -75 VDC, 2.0 amps @75 watts.
> >>> Radio unit, 110VAC/DC 12V output 7 watts.
> >>>
> >>> Since you are completely green at your site and if these power
> >>> requirements exceed what you would want to deal with, and if you have
a
> >>> neighbor that would be interested in what we discussed, I would be
most
> >>> pleased to take a call from them."
> >>>
> >>>
>
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