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
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 into the 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
www.getpimby.com
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