Re: [RE-wrenches] FLA battery setpoints with larger arrays

2015-05-23 Thread Ray Walters
Having the LVD be temperature compensated so that the load is always disconnected above the freeze point of the battery would be a Huge Improvement on the whole concept of LVD. In combination with State of Charge monitoring, like the Whiz bang Jr, would be the most effective, and just program

Re: [RE-wrenches] FLA battery setpoints with larger arrays

2015-05-23 Thread b...@midnitesolar.com
On 5/23/2015 11:37 AM, Luke Christy wrote: Jay's point about adding PV to offset daytime AC for the battery bank brings up the issue of active cooling. How many folks out there are installing some form of cooling for LA battery banks, and how are you implementing it? As long as some FLA bat

Re: [RE-wrenches] FLA battery setpoints with larger arrays

2015-05-23 Thread Ray Walters
Hi Folks; In our area, below 0F cold is definitely an issue, but I agree it does extend battery life if it doesn't freeze. From a design stand point you can end up with a really large battery: double the size to account for only discharging it 50% for freeze protection, then double it again

Re: [RE-wrenches] FLA battery setpoints with larger arrays

2015-05-23 Thread Luke Christy
Jay's point about adding PV to offset daytime AC for the battery bank brings up the issue of active cooling. How many folks out there are installing some form of cooling for LA battery banks, and how are you implementing it? The issue of excess heat being an enemy of battery life has had me c

Re: [RE-wrenches] Discrepency between inverter kWH reading andsolar production meter

2015-05-23 Thread Carl Adams
Kevin, My experience with inverter based kilowatt hour readings is that they are always optimistic. My experience with SolarEdge shows the SolarEdge kilowatt hour reading runs about 2 percent higher then the utility grade meter. I have found similar discrepancies with SMA , Fronius and other invert