Re: [RE-wrenches] Need a hand with Sunny Island/Sunny boy AC couple

2023-10-22 Thread Mac Lewis via RE-wrenches
Hi William, I think you will find that the state of charge discrepancy will be a continual problem to contend with in voltage mode. The state of charge algorithm that the SI uses (and bases all decisions) is complex and not very Lithium compatible when at the ends of the state of charge spectrum

Re: [RE-wrenches] Need a hand with Sunny Island/Sunny boy AC couple

2023-10-22 Thread Chris Sparadeo via RE-wrenches
Hi William, You will want to make sure that the eVaults are all running that same firmware and that terminator switches and battery ID #s are set correctly. High SOC and large incoming current could definitely be the reason why voltage skyrocketed up. Best, Chris On Sat, Oct 21, 2023 at 9:39 PM

Re: [RE-wrenches] Need a hand with Sunny Island/Sunny boy AC couple

2023-10-21 Thread William Miller via RE-wrenches
12 kw PV nominal. Low tilt angle and old panels so reality is far less. 5 e-vault 18.5 kWh batteries 4 SI 6048 2 SB 6000 US System operational for some years with flooded batteries. Just installed the e-vaults. I reset the system to factory defaults. I am not sure how to verify the system will pro

Re: [RE-wrenches] Need a hand with Sunny Island/Sunny boy AC couple

2023-10-21 Thread Ray Walters via RE-wrenches
What is the array size vs the battery size?  Sounds like a big array on a small battery for the voltage to go that high that fast. Ray Remote Solar On 10/21/2023 5:46 PM, William Miller via RE-wrenches wrote: Friends: I’m kinda stuck on a project setting up a SI/SB AC coupled system off grid

Re: [RE-wrenches] Need a hand with Sunny Island/Sunny boy AC couple

2023-10-21 Thread Jay via RE-wrenches
Hi williamCan you tell us which SI/SB you have?JayOn Oct 21, 2023, at 5:49 PM, William Miller via RE-wrenches wrote:Friends:I’m kinda stuck on a project setting up a SI/SB AC coupled system off grid. When the SB inverters ramp up the battery voltage jumps to 69 pretty quickly and the system shuts

[RE-wrenches] Need a hand with Sunny Island/Sunny boy AC couple

2023-10-21 Thread William Miller via RE-wrenches
Friends: I’m kinda stuck on a project setting up a SI/SB AC coupled system off grid. When the SB inverters ramp up the battery voltage jumps to 69 pretty quickly and the system shuts off. I checked the mini-grid frequency and it does ramp up to about 62+ but apparently not soon enough to curtail