Most facilities that have 480 volt service have either 120/208 or 120/240 volt
transformers to provide plug loads. You connect to one of these transformers.
If in the rare case you do not have any plug load transformer you provide a
120-480 or 120-277 volt transformer.
If your service is 277/480 V and you have 120-208 plug load transformer
servicing the building, and your critical loads are 120 208 three phase, you
can
service these loads with the Three phase 120 volt outbacks set to three phase.
If the load is about 10kW or larger you will need the new outback units (8kW in
a box)
DT
________________________________
From: Kristopher Schmid <sol...@legacysolar.com>
To: RE-wrenches <re-wrenches@lists.re-wrenches.org>
Sent: Thu, May 12, 2011 6:20:02 PM
Subject: [RE-wrenches] 120 volt inverter to 480 3 phase
Esteemed wrenches,
One of my students asked me today how you would (or if you could) connect a 120
volt outback inverter to a 277/480 volt 3 phase service. I said those three
little words that men find so hard to say, "I don't know". Help, please.
--
Thanks,
Kris Schmid
Legacy Solar, LLC
864 Clam Falls Trail
Frederic, WI 54837
715-653-4295
www.legacysolar.com
sol...@legacysolar.com
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