Temp Compensation [RE-wrenches]

[Ray Walters]

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HI All;

Its that time of year, and we're having problems with temp  
compensated  controllers raising the battery voltage above the  
operating voltage of the inverter (say 32 v on a 24 v system) I know  
the batteries should be kept warmer (say in an underground vault or  
better insulated) I've only seen this problem with modsine inverters  
that don't have adjustable set points, and batteries not well insulated.

It would be nice if charge controllers had a limit on the temp  
compensation. Also how come Blue SKy and Magnum have their sensors  
bolt to the battery terminal? It leaves it more exposed to air temp.  
Could those be run down to the bottom of the batteries to get more of  
a core temp, like we do with the Outback and Xantrex sensors?
FInal question: does the inverter temp sensor also adjust its cut in/  
cut out voltages, or is it just for battery charging? (ie, could I  
put a temp sensor on the inverter too and have it not shut off?)

Thanks,

Ray Walters
Solarray.com
NABCEP # 04170442	




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