Hey there Orion, I had Quick Charge build a custom charger for us before and it has been working great. They can build just about anything you have in mind. We bought ours through Derek @ IBE batteries.
Otherwise I believe the best solution is the one you mentioned, just have the Genewreck power loads directly through a x-fer switch. Best regards, Mark Dickson Oasis Montana Inc. _____ From: re-wrenches-boun...@lists.re-wrenches.org [mailto:re-wrenches-boun...@lists.re-wrenches.org] On Behalf Of Orion Thornton Sent: Monday, September 28, 2009 12:43 PM To: 'RE-wrenches' Subject: [RE-wrenches] Battery Charger Wrenches, We recently installed a grid-tie battery backup system using two Outback GVFX 3648 inverters. The client has an existing Generac backup generator, 8 kW @ 240VAC. From the beginning we told the client that the power quality from the Generac may not be within tolerance to integrate with the grid-tie inverters and charge batteries. This assumption was confirmed today when we commissioned and tested the system. The output frequency of the Generac was 58 hz. To get to the point does anyone have a battery charger they recommend for this application?-8 kW @ 240VAC generator output to 48VDC battery bank. Or maybe another suggestion to be able to integrate the generator into the system, we are also planning on manually transferring the generator output to power the critical loads if an inverter goes down. It also seems that the dc genset controls through the mate would be the best way to control the battery charger-any thoughts? Thanks in advance for any input. Orion Thornton Project Manager Independent Power Systems NABCEP Certified PV Installer (W) 406.587.5295 (C) 406.249.9912 www.solarips.com <http://www.solarips.com/>
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