SB 3048 half power in 48/24 mode [RE-wrenches]

[Bob-O Schultze, Electron Connection]

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Lee,
Both the SB50 and the SB3048 controllers are current limited on the 
OUTPUT-as you've just found out. Had you called Rick @ RV Power 
Products or had a distributor who knew more about RE than buy 
low-sell higher, you could have saved yourself some grief. I agree 
that it's a crying shame that the 3048 won't give you 50A or so OUT @ 
24V. I've expressed this to Rick enough times that he doesn't want to 
hear it anymore!! Be patient. There is a new kid on the block that 
will have a 48V IN, 50A @ 24V OUT MPPT machine in under six months. I 
know it doesn't help you in this situation, but....
Best, Bob-O

>A litte surprised!  I started using SB 3048s on 24V systems thinking I
>could use smaller wire with the higher voltage.  But using the 3048 in
>48/24 volt mode cuts the power-handling capability in half, and reduces
>a 1440 watt controller to a 720 watt controller.  So with the larger
>arrays I now need 2 pairs of wires and 2 solar boosts to use the 48v/24
>v option.  Has anyone else run into this?  Are there some larger arrays
>out there that are putting out half power because the SB 3048 in 48/24V
>is current liniting at half the array's capability?  Any simple
>solutions?  Thanks.  Lee Tavenner.


-- 
Bob-O Schultze, Electron Connection
PO Box 203, Hornbrook, CA 96044
800.945.7587 or 530.475.3402
fax 530-475-3401
www.electronconnection.com

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