What's New

Just found that I had a misunderstanding about the cycle mode 6.

The MaxChgTime* is not the variable that is used during the cycle mode 6 to stop the charge due to it running too long. That is the case for regular charging, but in mode 6, we use the MaintRunTme* variable that we have been setting at 540 minutes, so some of you have been having chargers stop prematurely do to exceeding this time. R3 is the code.
The fix is to simply put the same recommended 1400 minutes into the MaintRunTme* variable.

Hot water tank as energy storage component test 1
To better understand the dynamics of using my hot water tank as a energy storage load, I turned it off overnight, so I could see how much power it took to get it back to the setpoint. The heaters were turned off yesterday when the sun went down, and turned... more
The transfer relay is wired in and working.
Got the new transfer relay box mounted and wired in. This powers the big load manager buss in the main panel, from either the grid or the inverter, and can be remote controlled. It was a sunny day today, so I moved the hot water heater over the the new hig... more
Getting the lead out
I needed the big Trojan T105 batteries for the solar battery bank, so I needed to make a replacement. Most of the yard buggy use is to move something from one part of the yard to the other, or to collect wood, so the buggy only needs enough battery to make... more
AC source transfer relay is finished
Finally got the big 50A transfer relay system built. The big relays need 120VAC to operate the coils, so I used 2 of the same 2A solid state relays that we used on the grid charger to turn them on and off. The SSR feature opto isolated dc inputs that will ... more
Assembling the parts for the load manager
Started by building a modified electrical box with giant heat sink on the cover. Added 8 big Solid State Relays (SSR), and have ordered some interface IC's. I built up a grid charger computer board to use as the controller. The big transfer relay assembly ... more
50A 600VAC transfer relay
The big loads wired to the new isolated section of the breaker panel will want to be be powered by either the inverter or the grid,depending on the availability of the sun to keep the batteries up during the high current draw required. Need to remember tha... more
preparing to connect the big loads
My big breaker panel is nearly empty, and my new breaker panel is nearly full, so after looking at all my options, I chose to cut the main buss bars in the big panel to break it into two separate panels in the same box. Doing this live was not an option, s... more
running off grid all day
This time of year, the days get longer, the nights are shorter, so the total time where the battery's need to power the house is just at the point where the system stays on inverter power all night, and with the huge solar array, the batteries are fully re... more
Final assembled pack core
The main threaded rod clamps were tightened, and the insulating strips were hot glued in position so they can't slide out. The 3 main plates will be the attachment to the outer pack, and each had 5 # 8 screws, which should make a very secure attachment. Ne... more
assembling the pack core
Now that I have made all the required parts, it is time to do the final core pack assembly, hopefully with no shorts. The first issue was the small burr on the punched holes, that would be a very big job to remove. The fear is that the clamps would only ap... more
plugging in the discharger
To avoid any confusion as to the correct way to plug the discharger into the charger,this photo shows the correct orientation and relationship of the charger and discharger connections.... more
Beating on the system/ use it or loose it
Today was a nice day, and the batteries made it all night for the first time, so I decided to test the system by pushing it a bit. I set up a 1.5KW electric heater, and let it heat the solar/battery room all day. Unfortunately I forgot to turn off the heat... more