Jason:
A possible solution might be a 3-pole / 3-wire manual transfer switch,
or an automatic transfer switch that has manual transfer capability.
If the three Xantrex XW inverters are in a WYE configuration and set up
as a "separately derived system", you will need a 4-pole / 4-wire ATS so
the neutral can be switched too.
Put the 3-phase grid connection on the "utility in" of the ATS
Put the 3-phase service panel on the "load out" of the ATS
Put the Xantrex 3-phase AC outputs on the "generator in" side of the ATS
Here are some sources you may want to peruse:
EMERSON / ASCO:
http://www.emersonnetworkpower.com/en-US/Products/PowerSwitchingandControls/PowerTransferSwitches/Pages/default.aspx
GENERAL ELECTRIC:
http://www.gedigitalenergy.com/powerquality/ATSHome.htm
RONK: http://www.ronkelectrical.com/pdfstech/METERRITE%20GL.pdf
EATON / CUTLER-HAMMER:
http://www.eaton.com/Electrical/USA/ProductsandServices/ElectricalDistribution/ATS/index.htm
Regards,
Gary Willett, PE
Icarus Engineering / Solar Services LLC
NABCEP Certified Solar PV Installer # 031310-246
<mailto:g...@icarussolarservices.com>
On 5/16/2011 3:34 PM, Jason Szumlanski wrote:
I am looking for an external output bypass assembly for a Xantrex 3 x
XW4024 system. My customer wants to be able to completely bypass the
inverter output and operate loads straight from the grid - similar to
what can be done in an Outback FlexWare system with their I/O bypass
assemblies.
This customer just wants the option of running loads direct from
utility. It has nothing to do with the inverter input side.
Any off-the-shelf solutions out there?
Jason Szumlanski
Fafco Solar
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