I had a number of sites with the TSP-600 + BCM48A. If I recall
correctly from the docs, it would use any surplus wattage to charge the
battery.
So 600W - LoadW = chargingW.
With a 200W load that could take 4x100ah batteries from dead to full in
12 hours. I didn't think that was unreasonable charging time.
I never had the 360W units.
On 1/24/2020 1:14 PM, Ken Hohhof wrote:
Sorry, I got the acronyms wrong. I think I meant that at larger sites
we’re using the BCM, or TSP-BCM, or whatever it’s called. The one
that controls the power supply and powers the loads at the battery
voltage.
*From:* AF <[email protected]> *On Behalf Of *Ken Hohhof
*Sent:* Friday, January 24, 2020 12:06 PM
*To:* 'AnimalFarm Microwave Users Group' <[email protected]>
*Subject:* Re: [AFMUG] Smaller DC PSU/Charger combo
I don’t think so. Or keeping mind that the BCMU is also providing a
DC-DC converter function when it is running on battery, you could look
for a 12V system and then a smallish 12-48 converter.
Actually I would not run a 200 watt site off a BCMU or, for that
matter, a single 12V battery unless it’s a really big battery. The
runtime off a single battery won’t be very long, and the recharge time
off the BCMU will be even longer. I only use the BCMU at small sites
like you describe because the battery charging current is so low, it
could take days to recharge the batteries. If I need > 100 watts, I’m
using the BMU.
What size battery are you using, something like 100 Ah? One thought
would be to use 4 smaller batteries. I have a lot of sites with 4 x
22 Ah batteries. They fit in the bottom of our 24x30x10 NEMA boxes,
and I prefer to series batteries rather than parallel. 4 x 22 Ah is
roughly comparable to 1 x 100 Ah. If you can’t fit 4 x 22 Ah, maybe 4
x 9 Ah. I think I have at least one site with a BCMU and just a
single 9 Ah battery, but I think that site also has a whole farm
generator and the battery backup is mainly to cover the time for the
generator to come online.
*From:* AF <[email protected] <mailto:[email protected]>>
*On Behalf Of *Josh Baird
*Sent:* Friday, January 24, 2020 11:51 AM
*To:* AFMUG <[email protected] <mailto:[email protected]>>
*Subject:* [AFMUG] Smaller DC PSU/Charger combo
For micropops, we typically use some a Traco TSP-BCMU360 paired with a
Meanwell SDR-240-48. This is great, but it's a bit overkill for some
very small micropops (1-2 AP, BH) that we are looking at deploying. I
really don't need ~220-240W that this configuration supplies.
The challenge is that I don't want to use something like an AD-155C
which would require me to use 4 batteries 12V to get 48V. I like that
the BCMU360 can supply a 48V load with just a single 12V battery.
So - do I have any options for a smaller (physical footprint and
output power) solution that requires just a single 12V battery that
can supply a 48V load?
--
AF mailing list
[email protected]
http://af.afmug.com/mailman/listinfo/af_af.afmug.com
