Paralleling Battery Banks [RE-wrenches]
William Miller
wrmiller at charter.net
Sun Dec 31 10:20:43 PST 2006
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Hugh:
This is a very significant point you have raised. In the past I might have
been a bit cavalier about opening battery breakers, but no more! I have
drafted a warning sign that will remain in memory in my label printer.
I always find something illuminating in your posts. Thank you.
William Miller
At 12:02 AM 12/31/2006, you wrote:
>Take care that pulling a fuse will not leave the charging sources
>connected to the inverter and controls without any battery. I would use a
>separate fuse(s) for any charging sources, so that this is not
>possible. A wind or hydro turbine that shares a fuse with the inverter
>can be a source of dangerously high voltage if the fuse is pulled. Charge
>controllers may or may not be able to deal with the turbine output in the
>absence of batteries. I am not sure about PV but I would imagine that the
>same problem would arise to a lesser extent (lower open circuit voltage).
>
>I guess if you put a separate inverter fuse on each battery string, then
>you need multiple fuses for the charging sources as well. Or else place a
>conspicuous sign indicating the dangers of pulling out all the battery fuses.
>--
>Hugh
>
>Scoraig Wind Electric
>http://www.scoraigwind.co.uk/
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