[RE-wrenches] FM60/rectifier for gen charging

[toddcory at finestplanet.com]

Ahh, the old "DT kludge". I have done this here at my home because the GFX only has one AC input... grr... so this is a good workaround. As long as you take the 120 or 240 down to ~ 60 volts, you will be fine. My 3 kW xmfr (got used online - very heavy and expensive) has a 240 volt input/outputs and a 120 volt output/inputs. This is the 2:1 ratio you are after. Run the output through a heavy duty bridge rectifier (I used 80 amp at 600 PIV from digikey) on a good heat sink (also from digikey). The output goes to the MX/FM 60/80. You can adjust the output (if you need to) in the CC menu.

Todd


On Monday, April 26, 2010 10:32pm, "Mendocino Solar Service" <msolar at mcn.org> said:

> Hi Wrenches,
> 
> If I may, I'd like to forward this from a Wrench formerly on the list, now
> semi-retired:
> 
> "I know this subject has been discussed, but I couldn't find the archive. I'd like
> to know pros and cons of using the Outback FM 60 or FM 80 as a charger - using a
> 7000 watt (6000 prime) generator as the power source.  If I use a 6000w step down
> transformer, can I get all 6000 watts (3000 watts per leg) into one rectifier?  
> If not, I guess I will need two FM 60 or FM 80's  ( one for each leg of the
> generator).   I'm not sure a 6000 watt step down transformer is still available.
> 
> "I would like to have a parts list, and a source for the parts.  A wiring diagram
> would also be helpful.
> Thanks, Eric"
> 
> Bruce Erickson
> Mendocino Solar Service
> PO Box 1252
> Mendocino, CA 95460
> 707-937-1701
> 
> 
> 
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