Hey Dave,
Sorry for the delay to your question on the ASCO. Yes the 185 is the one I
use either with a service entrance rated CB or without. You can adjust time
so in a power outage the transfer is less than 2 seconds. Have had zero
issues since switching to them over 10 years ago.
Christopher
I'll let you all know once we sort this out.
A series of blade type disconnects could work. I'm not doing the AC
distribution past the inverters, but I need to consult with the electrical
contractor so I'm driving the bus at this point. Some combination of manual
and automated controls should
We don’t know how you have the AC distribution set up.
If you have a main that then distributes to sub panels, how about relays on
delay timers that go to each sub. 3-5 seconds would be more than enough.
Or mechanical discos with simple instructions of delay between each.
But yea people have
I definitely understand that I can't prevent it 100%, but I can surely
mitigate the likelihood. It's highly unlikely that all 10 refrigerators
will all start simultaneously based on temperature with the well pump and
two air conditioners except when power is first applied. Moreso than the
ATS
Which models do you like from ASCO Christopher? Something like this
below?
https://www.ascopower.com/us/en/product-range-presentation/66110-asco-series-185-power-transfer-switch/
[1]
Dave Angelini Offgrid Solar
"we go where powerlines
don't"
http://members.sti.net/offgridsolar/ [2]
e-mail
Jason,
Given all of the equipment you're looking at I'd consider using a small
shoe box sized PLC. Relays and timers are good but the PLC will give you a
lot more flexibility in a very small package and will be able to sense when
the ATS switch transfers. I enjoy using the ASCO unit as it offers
Outback inverters can do that, start and stop the genny, start up if loads
are above a programmed setting. I have used Lutron for a similar
application that turned one AC on at a time. You can use the inverter to
turn off load(s) if they is/are to high, it's all programable
Jerry
On Wed, Sep 11,
The Generac SMM senses the generator, probably won't work for solar.
It's easy to do a contactor with time delay relay, those devices are
available off the shelf.
As long as power goes off then back on, the time delay unit will back off
for the set time.
You can probably find a device that is an
Generac has a pretty cool device that really needs to get emulated in the
solar industry called the smart management module. It's a standalone smart
relay that can be programmed via dip switches to do just this, bring
devices on line in stages and drop them if the generator is getting
overloaded.
Jason, You may want XW pro. It is not much more than XW+ and will have a
better support for what you want in your microgrid. It also has twice the
warranty over xw+.
Dave Angelini Offgrid Solar
"we go where powerlines
don't"
http://members.sti.net/offgridsolar/ [1]
e-mail offgridso...@sti.net
You’ve got to plan on them all starting at once anyway. You can’t expect that
it’ll never happen.
And really how do you prevent it. The refrigerators and AC’s are on all the
time waiting for the thermostat to activate. And it’s not good to turn a
working fridge on/off especially is the
Hi Jason,
I would use soft start on everything that I can. The
mini-split already is soft start. There is a device that adds soft start to
appliances/loads below.
https://www.raymondinnovations.com/ [1]
In the
future Schneider and I assume Outback will have API's for their
electronics.
That is what I was thinking, but how will the contactor coils "know" when
the ATS switches to inverter power. I'm thinking I need to use an AUX relay
or a series of relays to produce the desired result. I don't think it will
be necessary when going from solar to generator in this case, but maybe.
Put the loads on contractors, control the contractors with adjustable time
delay relays. Stagger the timing.
> On Sep 11, 2019, at 2:41 PM, Jason Szumlanski
> wrote:
>
> In an off-grid situation I'm looking for a strategy to manage transfer from
> generator power to inverter power because I
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