[RE-wrenches] Low Voc for effective string?

[Sindelar Solar]

Bill, I wouldn't, especially with FLAs. I have seen this situation here, 
where the summer highs are similar, with a few homeowner/hack 
installations and no, 60-cell modules will not finish the charge in hot 
weather. Strings of three work just about perfect with modern charge 
controllers, especially in winter, as they range high enough but well 
below 150VDC limits.

Allan

On 9/11/2018 4:04 PM, Bill Battagin wrote:
>
> I've been on hold with OB for about 40 minutes now and I need to know 
> if 2 SW PVs with a Voc of 39.9 and a Vmpp of 31.3 will do an effective 
> job of charging a 48 volt LA battery especially with temps of 95 
> degrees.  Anybody have experience with this or similar,  Appreciate 
> the feedback.  It just seems I'm a little low in Vmpp if I want to 
> equalize when its hot.  Will it be even more questionable in 10 years 
> as PVs age?
>
> OB did just pickup only to tell me I need Java for the string sizing 
> tool and he can't help me with this configuration.
>
> Bill
>
> -- 

*Allan Sindelar*
allan at sindelarsolar.com <mailto:allan at sindelarsolar.com>
NABCEP Certified PV Installation Professional
New Mexico EE98J Journeyman Electrician
Founder (Retired), Positive Energy, Inc.
*505 780-2738 cell*

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