Hi Don and Wrenches,
I have commissioned four new Ensemble systems over the past two weeks.
All storage additions to existing PV systems with Enphase
microinverters. Although there are parts of the process that are a bit
clunky, we have not had the problems you mention. I followed the
instructions in the tech brief "Ensemble Commissioning via Installer
Toolkit 3.0," linked at
https://enphase.com/en-us/certification-support-program-guidelines
(direct link to the PDF is
https://enphase.com/sites/default/files/Tech%20Brief%20-%20Ensemble%20Commissioning%20via%20Installer%20Toolkit%203.0.pdf).
My experience is that each of the four Enpower microgrid interconnection
devices we've installed started up in passthrough mode, so if input
breakers are on in the MID, backup loads have had power before
commissioning is completed, and power has remained on for those backup
loads even after we turned off the PV and ESS disconnects to wait for
utility PTO after doing commissioning and functional testing.
It did take us some time to do the Envoy software update before
commissioning, and the system does require a second trip for functional
testing after the Encharge battery software updates have been done (up
to 12 hours). I haven't stuck on site for the Encharge/Enpower software
updates, but it looks like they are taking 4-6 hours for us, based on
percentage done by the time I've left the site (system sizes from 10.08
kWh to 20.16 kWh). Yeah, it's a second trip. I've used the trip to meet
with electrical inspectors for these first systems.
One "trick" I've used on the Envoy software update is that you once you
scan in the serial numbers of each Enpower & Encharge with the installer
toolkit and plug in the cell modem and wireless communications kit, the
installer toolkit will allow the Envoy software update to work, and you
can get it taken care of early in the day, while still hanging boxes,
running conduit, etc.
I would agree that there are definitely parts of the new installer
toolkit that aren't intuitive. I missed the "edit" button on the devices
page for a bit (which is not mentioned in the tech brief), and couldn't
figure out how to increase the device count, for example. I also had to
try the Envoy update twice for some of these systems, as it threw an
error code the first time around, so for some of the systems it took
closer to 45-50 minutes to get the Envoy software update done.
Hope the next one goes more smoothly for you! New products, new
challenges, I guess.
Best,
Louis Woofenden
d...@energysolarnow.com wrote on 9/30/20 2:59 PM:
Wrenches-
I'm having a lot of difficulty commissioning my first Enphase Ensemble
installation. This is on a pre-existing microinverter installation.
Have been on the phone with tech support several times; each time they
forward a Tech Brief about commissioning that has different and
slightly conflicting instructions. It seems the order of turning on
each box is critical. Because of already-obsolete software that they
ship with, the software must be updated before activating the Envoy,
Enpower, and Encharge or they will not work.
And for some reason the Envoy must have both Wifi and cell connection
before even starting commissioning, but the slower cell connection is
used for software download so it takes up to 12 hours.
This commissioning must be done on-site using their latest version of
Installer Toolkit on a smart phone. Sure, there are buttons in
Enlighten's Activation page to add an Enpower and Encharge, but these
do not work "yet".
Enphase tech support says they are working on making this a single-day
process rather than the current multi-day commissioning. This does not
even count the actual hardware installation time.
I would advise anyone against moving any loads to a new subpanel
before the entire system is commissioned and operating.
As of now I have an Enpower that mistakenly thinks it is off-grid when
the grid is present, so it has told the Envoy to shut down the PV
microinverters and batteries. These are relay controlled, therefore it
is not possible to have them connected without software control. It
has already committed the major crime of shutting down the backed-up
loads while the grid is still present. Enphase is working on it, but
seem to be developing software on the fly. I suppose their integration
process has been hit hard by pandemic distancing, and they are all
working remotely.
Has anyone else had a successful experience commissioning an Ensemble?
I'd like to hear about the doos-and-don'ts.
Don Barch
d...@energysolarnow.com <mailto:d...@energysolarnow.com>
_______________________________________________
List sponsored by Redwood Alliance
List Address: RE-wrenches@lists.re-wrenches.org
Change listserver email address & settings:
http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org
List-Archive: http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org
List rules & etiquette:
http://www.re-wrenches.org/etiquette.htm
Check out or update participant bios:
http://www.members.re-wrenches.org
--
--
Louis Woofenden
Engineering Director
Net Zero Solar, LLC
101. W. 5th St., Tucson, AZ 85705
Arizona ROC #248710, 259756, 259521
Phone:520.207.4053 <tel:520.207.4053>Ex. 3
Cell:520.237.5040 <tel:520.237.5040>
Fax:520.203.7230 <tel:520.203.7230>
NABCEP Certified PV Installation Professional™
_______________________________________________
List sponsored by Redwood Alliance
List Address: RE-wrenches@lists.re-wrenches.org
Change listserver email address & settings:
http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org
List-Archive: http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org
List rules & etiquette:
http://www.re-wrenches.org/etiquette.htm
Check out or update participant bios:
http://www.members.re-wrenches.org
