Xantrex versus Sunny Boy [RE-wrenches]

[EH Roy]

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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