There is no reason one couldn't do a custom POE that was AC.
A couple thoughts...
To maintain a max input of 48VDC, (to be under the low voltage codes),
and to deliver 50W topside, is going to require a 14-16AWG wire pair
and a 48V 60W supply at the bottom.
I suspect that you will need to get some DC-DC converters in various
sizes to run the equipment up there...
os10ru...@gmail.com wrote:
Isn't POE DC?
On May 9, 2009, at 5:37 PM, George Rogato wrote:
Or a person could buy a set of up down transformers to increase the
voltage going up the tower to avoid voltage drop.
Of course, running 110 up to the top is probably easier.
Jack Unger wrote:
You have the best solution - regulating at the top. Otherwise, as you
state, the voltage at the top will go up when the current load goes
down. The voltage at the top will go down when the current load
goes up.
MUCH better to regulate at the top...
os10ru...@gmail.com wrote:
I'd worry about what would happen as the load varies, specifically
if
the load gets substantially less which could lead to the device
getting overloaded. I'd rather sent up something unregulated and
regulate it at the top.
Greg
On May 8, 2009, at 5:58 PM, Kevin Neal wrote:
So..what about this...get an adjustable voltage power supply.
Install the
RG6 or whatever coax/wire would handle the load/distance. Adjust
the
voltage with a meter up top so that you have ~24-28v at your
equipment?
-Kevin
< all previous content "peached" 'cuz we were out of prunes>
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