[RE-wrenches] Sunnyboy TL with Batteries

[Bradley Bassett]

I've quoted a few systems with an IOTA charger and small inverter. I have
not had any feedback yet. I figure the separate battery charger and
inverter won't make the loads flicker so much when the sun comes and goes.
I'm not sure if the SPS comes back automatically when it's been overloaded
though. A 45A IOTA should only draw about 600W so if there is good sun it
should stay on I'd think. Since the system has to be manually switched over
anyway, I thought the customer could unplug the IOTA from the grid and plug
it into the SPS when there is an outage.

I have not really heard any feedback on the SPS in general.

Brad Bassett
AEE Solar

On Wed, Nov 11, 2015 at 2:33 PM, Benn Kilburn <benn at skyfireenergy.com>
wrote:

> Hi Ray,
> Keep in mind that the secure power supply (SPS) is limited to 1500W
> output, in full sun.
> Recently I was testing a SPS system on a fairly overcast day and was able
> to power a simple radio but not able to turn on a 500W work lamp.
> Also, the AC breaker supplying the inverter with the SPS has to be
> manually switched off (as per the manual) and then the switch for the SPS
> turned on for it to operate and then flip both switches again when grid
> power is back on before the inverter will operate in grid-connected mode
> again.
>
> Benn Kilburn
> SkyFire Energy Inc.
> 780-906-7807
>
>
> > On Nov 11, 2015, at 3:22 PM, Ray Walters <ray at solarray.com> wrote:
> >
> > Hi All;
> >
> > It just occurred to me that the new secure power supply model Sunny Boy
> TL inverters might be able to charge a battery based inverter through its
> regular AC input, and avoid some of the control issues inherent to regular
> AC coupled systems.  This would allow the secure power output to be wired
> to the regular AC input of the battery inverter, and then gain the
> advantages of full battery charge control.  This would require using a
> battery based inverter with 2 AC inputs, with regular grid to the grid
> input, and the secure power supply output from the Sunnyboy wired to the
> generator (or 2nd) AC input.  (or some relay arrangement for single AC in
> inverters)
> >
> > Anyone try this, or have good reasons this is a bad idea?  I'm literally
> thinking out loud, so don't hold it against me if this actually is dumb.
> >
> > Thanks,
> >
> > --
> > R.Ray Walters
> > CTO, Solarray, Inc
> > Nabcep Certified PV Installer,
> > Licensed Master Electrician
> > Solar Design Engineer
> > 303 505-8760
> >
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