Re: [RE-wrenches] Battery Backup for Older Enphase Systems

Drake Mon, 13 Nov 2017 07:52:29 -0800

Hi Nick,

Please send me your information. Currently I amfinishing up an Enphase M-250, AC coupled systemthat is designed to taper charge batteries bydropping out groups of inverters based on battery voltage.


Thanks,

Drake

Drake Chamberlin
Athens Electric LLC
OH License 44810
CO License 3773
NABCEP Certified Solar PV
740-448-7328


At 11:58 PM 11/11/2017, you wrote:

Hi Wrenches,

We now have the ability to provide frequencybased power curtailment. If you are AC Couplingwith a battery-based inverter that can fluctuatefrequency to regulate charge on the battery,then we can ramp our output up and down to regulate the charge more evenly.

If you have an AC Coupled system using Enphasemicroinverters, reach out to me and I will setyour company up with a grid profile that canprovide this option. Once your company has beengranted access to this profile, you can updatethe profile using either our Installer Toolkit (ITK) app or Enlighten.



Cordially,

Nick Soleil

Enphase Energy | Product Manager, Envoy and IQ Accessories


(707) 763-4784 x7267  // office

(707) 321-2937  // cell

[Enphase_esig_logo6.jpg]<https://enphase.com/>


Energy Evolved<http://enphase.com>

Powering Whats Next | The Enphase EnergyManagement System<http://ow.ly/HbVS3>



NABCEP Certified Solar PV Installer #03262011-300

California C10 Licensed Electrician #986315

Texas Master Electrician #284451




________________________________

From: RE-wrenches<re-wrenches-boun...@lists.re-wrenches.org> onbehalf of Gary Willett <g...@icarussolarservices.com>

Sent: Saturday, November 11, 2017 3:34 PM
To: re-wrenches@lists.re-wrenches.org
Subject: Re: [RE-wrenches] Battery Backup for Older Enphase Systems

DAVE:

How does the brute force OFF transitions of the 8K of Enphase AC-coupled
micro-inverters affect the AC loads being served by the Sonnen? Are
there any noticeable/measurable glitches in the Sonnen's distributed AC?

I am assuming the Enphase ON transitions are more graceful because of
the UL1741 prove-in period and the individual ramp-up of the individual
microinverters.

Regards,

Gary Willett PE
Icarus Engineering & Solar Services LLC

On 11/9/17 2:28 PM, Dave Tedeyan wrote:
> You could go with a Sonnen. That is meant to be AC coupled, and its a very
> simple install.
> Nice piece of equipment, but its expensive. We just installed one that has
> right around 8kw of Enphase M215 inverter output. So far, no issues.
>
> Cheers,
> Dave
>
>
> *--*
>
>
> *Dave Tedeyan*
> *Project Engineer*
>
> *Taitem Engineering, PC*
> 10 Verizon Lane, Lansing, NY 14882
> Voice: (607) 930-3481 x6
> www.taitem.com<http://www.taitem.com>
>
> On Thu, Nov 9, 2017 at 2:07 PM, John <j...@gosolar.co.nz> wrote:
>
>> We did one a few months ago using Outback VFX3024e, 1000 a/h battery bank

>> - basically an Off-Grid system but tied intothe switchboard, with customer

>> nominated circuits dedicated to the Off-Grid system.  The grid is acting
>> like the backup generator via a relay.
>>
>> The only little hiccup was that when the *generator* was called on, the
>> Off-Grid system had to sync in with the real Grid, it was not immediate.
>>
>> Apart from that - seems to work O.K.                    John,    GoSolar
>> Ltd,  Christchurch, N.Z.
>>
>> ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
>> ++++++++++++++++++++++++++++++++++++++++++++++++
>>
>> -----Original Message-----
>> From: RE-wrenches [mailto:re-wrenches-boun...@lists.re-wrenches.org] On
>> Behalf Of Matt Sherald
>> Sent: Friday, 10 November 2017 3:43 a.m.
>> To: RE-wrenches
>> Subject: [RE-wrenches] Battery Backup for Older Enphase Systems
>>
>> I'd appreciate some ideas as to what backup system designs work well with
>> the older Enhase equipment (M250/215 era).
>>
>> I've tried this at home with a XW4024, but the frequency rise causes the
>> lights to flicker and it is awfully unpleasant.
>>
>> A customer of mine has asked about backup to go with an array that uses
>> M250s and this prompted me to write.
>>
>> Thanks in advance!
>>
>> -Matt
>>
>> --
>> Matt Sherald
>> PIMBY Energy, LLC
>> NABCEP Certified Solar PV Installer®
>> 304-704-5943
>>
>> www.getpimby.blogspot.com<http://www.getpimby.blogspot.com>
>> www.getpimby.com<http://www.getpimby.com>
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Re: [RE-wrenches] Battery Backup for Older Enphase Systems

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