Xantrex versus Sunny Boy [RE-wrenches]
Matt Tritt
solarone at charter.net
Thu Aug 14 10:38:55 PDT 2003
EH,
We did a three phase SunnyBoy install that we thought was going to
require an isolation transformer for this very reason. I turned out not
to be needed in our case, but could that method work for you?
Matt T
-----Original Message-----
From: EH Roy [mailto:ehroy at solar-works.com]
Sent: Thursday, August 14, 2003 9:53 AM
To: RE-wrenches at topica.com
Subject: RE: Xantrex versus Sunny Boy [RE-wrenches]
Wrenches,
And you thought this thread was dead.
I have learned something in the last week or so that may enter into
these
considerations. Apparently a new interconnection standard was approved a
couple months ago - IEEE 1547. New York utilities are using it to
prevent us
from connecting single phase inverters, like the Sunny Boy, to 3-phase
service (208 VAC). Something about no reference to neutral. I must
confess
that I have not had a chance to find or read IEEE 1547 yet, so I stand
to be
corrected on what it requires.
This is really biting us on a 50-school project in NY. Others having
similar
problems? Can someone from SMA address this issue and provide some
clarification? I know you guys have written a nice document on
connecting
Sunny Boy Inverters to 3-phase service (prior to IEEE 1547). Any input
on
this? Kent? John B.?
Thanks,
E. H. Roy
Solar Works Inc.
64 Main Street
Montpelier, VT 05602
802 223-7804 x306
ehroy at solar-works.com
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