Brian,
Expanding on William's suggestion, you might also consider a conventional 240V time switch on the AC1 input, to limit the times when grid charging might occur. The inherent limitation of this approach is that it while it would effectively prevent charging during peak hours, it would defeat allowing the grid to charge when really needed, so the owners would have to pay more attention to their usage habits. This may not be so bad, as it would only affect short-term usage and would not depend on weather patterns varying the solar insolation.
Allan

Allan Sindelar
al...@positiveenergysolar.com
NABCEP Certified PV Installation Professional
NABCEP Certified Technical Sales Professional
New Mexico EE98J Journeyman Electrician
Founder, Positive Energy, Inc.

A Certified B CorporationTM
3209 Richards Lane
Santa Fe, New Mexico 87507

505 424-1112 office 780-2738 cell
www.positiveenergysolar.com

 

On 10/4/2013 3:28 PM, William Miller wrote:

Brian:

 

Indeed LBX can have the unintended consequence of charging during peak hours if the loads draw the batteries down during that time.  This can be avoided if you can control the loads so all or most do not operate during peak hours.

 

William

 

PS:  The obvious logic is that if you can control the loads to operate minimally or not at all during peak hours, you don’t need inverters and batteries anyway.

 

Wm

 

From: re-wrenches-boun...@lists.re-wrenches.org [mailto:re-wrenches-boun...@lists.re-wrenches.org] On Behalf Of Brian Mehalic
Sent: Friday, October 04, 2013 1:39 PM
To: RE-wrenches
Subject: Re: [RE-wrenches] Trace SWs in Energy Management Mode

 

Thanks, I was thinking about using LBX, but the customer is really not too excited about it.  And based on the manual, Energy Management Mode seems like it fits the bill, but it doesn't seem to be going back into stand-alone/inverter mode when the timer is supossed to turn off.


 

Brian Mehalic
NABCEP Certified Solar PV Installation Professional™ R031508-59

IREC ISPQ Certified Affiliated Instructor/PV US-0132

 

PV Curriculum Developer and Instructor

Solar Energy International
http://www.solarenergy.org

 

On Fri, Oct 4, 2013 at 3:42 PM, <eric.bent...@schneider-electric.com> wrote:


Hi Brian,
LBX would be better for the way this customer is using the system, because it only connects
 to the grid when the batteries get low. Unfortunately, the timers do not affect LBX, so charging
may occur during the peak rate....or it may not :C)

Rgds,

_____



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