Yeah. This is just an opinion, but temperature compensation is a must
if the batteries are not in an air conditioned place.
-Adam
On 11/23/2018 8:37 PM, Ken Hohhof wrote:
The Traco units could become your new friends. Batteries last longer
with temperature controlled smart charging. I didn’t mention but just
as with your current approach, the voltage isn’t 48V, it’s the battery
voltage, more like 54-56 volts when the batteries are fully charged.
If you want an AC UPS, the Alpha FXM series is good stuff.
*From:* AF <[email protected]> *On Behalf Of *Mathew Howard
*Sent:* Friday, November 23, 2018 7:09 PM
*To:* AFMUG <[email protected]>
*Subject:* Re: [AFMUG] 48v Power Supply Switches
For 24v, Meanwell has the DR-UPS40, but since they don't make a 48v
version of that, I just have string of 48v batteries wired straight to
the power supply.
I avoid AC UPS's whenever possible.
On Fri, Nov 23, 2018, 3:36 PM Ken Hohhof <[email protected]
<mailto:[email protected]> wrote:
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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