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Busbar voltage from SD-8

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peter(at)sportingaero.com
Guest

Posted: Mon May 10, 2010 11:46 am Post subject: Busbar voltage from SD-8

Hi,



I wonder if I could pick your collective brains? I've just started 

flying a One Design that has only an SD-8 to generate power, with a 

PC-680 battery. The bus bar voltage is around 15.1 volts (verified on 2 

independent instruments). I realise that this is at the top end of the 

desirable range, but is it too high? There are very few electrical 

services that I can switch on to provide a load to the system. I believe 

there is an adjuster screw on the voltage regulator - but that takes a 

couples hours of panels unscrewing to access.



So my question is 15.1volts too high for a steady state busbar voltage? 

Do I need to do something about it right away or could it wait for 5 hours?



Regards, Peter

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nuckolls.bob(at)aeroelect
Guest

Posted: Mon May 10, 2010 4:39 pm Post subject: Busbar voltage from SD-8

At 02:31 PM 5/10/2010, you wrote:

 	  Quote: 	
		  

<peter(at)sportingaero.com>



Hi,



I wonder if I could pick your collective brains? I've just started 

flying a One Design that has only an SD-8 to generate power, with a 

PC-680 battery. The bus bar voltage is around 15.1 volts (verified 

on 2 independent instruments). I realise that this is at the top end 

of the desirable range, but is it too high? There are very few 

electrical services that I can switch on to provide a load to the 

system. I believe there is an adjuster screw on the voltage 

regulator - but that takes a couples hours of panels unscrewing to access.



So my question is 15.1volts too high for a steady state busbar 

voltage? Do I need to do something about it right away or could it 

wait for 5 hours?


	


   It's not a recipe for fast-destruction of the battery . . .

   but we'd like to see it lower. 14.6 volts is a good target.

   I'd make the adjustment.



   Bob . . .

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