A long time. In theory if I've got 300 watt load then I've got 300 watts
for charging, so at least 16 hours to go from dead to charged.
Most sites are more like 100-150 Watt, and they're only that high
because the Telrad stuff needs a lot of juice. Still probably 10-12
hours to fully recharge.
I haven't actually monitored the recharging, so I couldn't say how long
it /actually/ took, but it couldn't be any faster than that.
-Adam
On 11/26/2018 7:42 PM, SmarterBroadband wrote:
Wow 4x100SH. How long did they take to recharge after a 18 hour run
time? My worry is there will be so little left for the batteries if
you have say 400 Watts of site load?
Adam
*From:*AF [mailto:[email protected]] *On Behalf Of *Adam Moffett
*Sent:* Monday, November 26, 2018 12:59 PM
*To:* [email protected]
*Subject:* Re: [AFMUG] 48v Power Supply Switches
The BCM48A can take 10 gauge wire on the battery terminal.
I would assume the BCM48 is the same, but I don't have any of those.
Keep in mind the 360Watt unit at 48V means there can't be more than a
7.5amp load. On the 600Watt (BCM-48A) you can't have more than
12.5amp, and in fact there's a 12.5amp fuse on the battery circuit.
So you don't need wire for a larger load than that. #10 AWG is more
than sufficient.
I use 100ah x 4, so 4800 watt-hour. A site with 3 Trango Lynx and a
Telrad Compact ran for 18 hours without utility power, so the thing
does its job.
-Adam
On 11/26/2018 3:31 PM, SmarterBroadband wrote:
Ken
How many AH of battery do you hang off one of these units?
Battery connections look very small…
Adam
*From:* AF [mailto:[email protected]] *On Behalf Of *Ken Hohhof
*Sent:* Friday, November 23, 2018 1:35 PM
*To:* 'AnimalFarm Microwave Users Group' <[email protected]>
<mailto:[email protected]>
*Subject:* Re: [AFMUG] 48v Power Supply Switches
What are you doing for battery backup?
Another option we use at most of our medium size towers now is the
Traco TSP-BCM48 battery control module with a TSP360-148 power
supply. They do have a 600W version I think it is TSP-BCM48A and
TSP600-148 but I haven’t used them.
I’m going to guess you have AC UPS’s with a big-ass battery string?
*From:* AF <[email protected]
<mailto:[email protected]>> *On Behalf Of *Mathew Howard
*Sent:* Friday, November 23, 2018 1:57 PM
*To:* AFMUG <[email protected] <mailto:[email protected]>>
*Subject:* Re: [AFMUG] 48v Power Supply Switches
Yeah, 1000 watts does seem like overkill for... the biggest power
supply I've used on any of our towers is 480 watt, and I figured
that should be more than double what we actually are using. I
mostly use Meanwell 240 watt DIN rail mount power supplies these days.
On Fri, Nov 23, 2018 at 12:08 PM Ken Hohhof <[email protected]
<mailto:[email protected]>> wrote:
I assume you want an AC/DC power supply not a switch? Mean
Well is a good brand, personally I prefer the HRP series
especially if you putting it at a tower site because it is a
high reliability model with a wider temperature range, the
price difference won’t break the bank. I tend to keep HRP-150
and HRP-300 supplies on the shelf.
Also that’s a pretty big power supply. Do you really need
that much power? It makes sense to have some extra capacity
to handle inrush current, but probably not more than double.
Power supplies tend to be inefficient when run way below max
rating. If you really need 1000 watts, maybe a rectifier
shelf with N+1 redundant power modules would be a better
choice. Or for the higher power consumption radios like
licensed backhauls, some WISPs like to use a 100 or 150W power
supply for each radio.
*From:* AF <[email protected]
<mailto:[email protected]>> *On Behalf Of *Chuck McCown
*Sent:* Friday, November 23, 2018 10:01 AM
*To:* AnimalFarm Microwave Users Group <[email protected]
<mailto:[email protected]>>
*Subject:* Re: [AFMUG] 48v Power Supply Switches
I have always had great luck with Meanwell products.
*From:*Alex Davidson
*Sent:*Friday, November 23, 2018 8:11 AM
*To:*[email protected] <mailto:[email protected]>
*Subject:*[AFMUG] 48v Power Supply Switches
Hey guys, we are stepping up to some 48v equipment on a tower
and in looking into power supply switches. This seemed to be
something that would work for us (Mean Well SE-1000-48). Any
thoughts or pros and cons that yall have found with this unit.
Any units of similarity that might work well in place of this
one. Thanks
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