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  • Post in thread: Single vs. Multiple Class-T Fuses

    I took my EVE280 cells and unrolled them then laid T-Fuses out on them and rolled them back up to be extra safe before commissioning mine :/
  • Post in thread: What Would Cause LiFeP04 Battery Voltage To Spike During Charging ? XW Pro

    Had a similar issue, turned out to be a very loose connection. If you are taking the previously stated advice of disassembling and testing each battery you might end up "fixing" it when you reassemble it all ;)
  • Post in thread: Solar array ground mount ballast.

    Updating a little as I had to shift materials. 4x4 = drk brn 2x6 = lt brn 2x8 = green Flipped panel orientation to reduce footprint, this makes the diagonals 12ft. Added 3 sets of wire cross braces ... going to pretension with gripples, will tie blocks to ground with same wire / gripples and...
  • Post in thread: DIY Large insulated water drain back tank?

    16ga ***This is not an original concept*** 12 panels build a tank, each panel attached top/bottom to the adjacent panel. A stack of 4 panels go on top the previous, sheet metal corners with 2 screws per C Channel intersection min, likely might do 4. If I don't go this route I might build it...
  • Post in thread: free standing service panel (pedestal)

    A service panel is where you would normally mount your disconnect, meter, and maybe junction boxes and you would get "service" from the power company to that panel. Typically these are two 4x4's burred at least 4 ft in the ground (we can't do that) and then plywood attached to that. We have...
  • Post in thread: Power Outage Causes EG4 Operation Faults

    in our place we installed a Reliance manual transfer switch for our critical loads. We then wired the circuits we wanted to run on it and the GEN side of the transfer switch was set to the output of the Inverter. We just keep those loads always set to GEN ... power goes out, we don't know about...
  • Post in thread: (image intensive) Re-purposing Radian Load Center for Battery bank and SMA SI Load Center

    I picked up a Outback radian box (empty) and a Outback Radian Load center off Craigslist earlier this year for $150 and planned on using it but didn't know where ... Originally I thought the Outback Radian box had all the components in it but found out later it did not so I decided it would...
  • Post in thread: Batrium SMA Sunny Island Integration issue?

    I have: PV String 1 > MN 600 > SPD > SB ( repeat for all 3 strings) All panels EGC > MN box > SB chassis SB emergency Power port EGC also to SB chassis And now SB N to SB Chassis The SB L1/L2 go to a normal breaker in the panel pedestal next to it which has 3 wires The breaker panel has an...
  • Post in thread: Batrium Installation

    EDIT: YES ... There is no PWR input on the Expansion 3 ... it gets it from the connected watchmon. The limits are the voltages you can send through relays SSR's up to 65vdc, the manual relays 30vdc ... both 5A
  • Post in thread: Two MN200 classics with breakers

    For those of you who have read my other posts you know I purchased a sma Prewired system from MN with two 200 classics then decided to go full SMA and do AC coupled. I don't need the classics and have removed them, their wires, breakers, sensors, etc from the control center. These have never...
  • Post in thread: Power Outage Causes EG4 Operation Faults

    Could use a split bus panel ? Top of the panel is feed by mains and has mains only loads. There would be a breaker here which goes into AIO AC IN. Then AIO AC Out goes to the bottom part of the panel where any loads which should be on the AIO are found. Otherwise ... you need the POCO to go to...
  • Post in thread: free standing service panel (pedestal)

    Visited the place we bought our 2x2x4 retaining wall blocks from for our array today to pick the last two up. Turns out they make a cover for underground electrical vaults which are roughly 6+" x 4'x5' ... thinking of picking three up and partially burying them in the ground to use as the...
  • Post in thread: Batrium SMA Sunny Island Integration issue?

    @ChrisFullPower ... turns out my IXXAT device wasn't setup to read at pins 4/5 with the version I have ... I am now tracking traffic on the can network live while the SMA is plugged up after switching to the right pins on my db9 connector Going to let it run a day then review the logs which...
  • Post in thread: Ground Mounting Solar Evacuated Tubes

    thought maybe you were using it for HRH as well ;)
  • Post in thread: Power Outage Causes EG4 Operation Faults

    Solved it with MSPaint. Really big unicorn diodes and the switch of the ATS on the POCO side of the equation ... POCO / AC IN / AC OUT ... one panel ;)
  • Post in thread: DIY Large insulated water drain back tank?

    I have seen a lot of builds for DIY storage tanks as well as indoor koi ponds that seem to use wood, typically 2x6 on edge 6" OC bolted together and tied together with plywood on either side, and I was thinking of using scrap C Channel I have left over from building. The C Channel is 16ga...
  • Post in thread: Batrium SMA Sunny Island Integration issue?

    94.8% SOC now .. still kicking at 30amps in boost mode with 1 minute before it switches to float mode. 1kw dump load still running ... I like it but it still means "work" till we have a real dump load of living on site.
  • Post in thread: anyone recognize this brand of manifold?

    UPDATE: For those that come across this and wondered what my solution was, I ended up swagging the manifold coper pipe up a bit to allow for a 3/4 brass union to be soldered on.
  • Post in thread: Final LFP Charging settings with Batrium BMS?

    Same old 3.3 settled voltage state, not being able to climb past with the .1A at 98% SoC. Will now set to the non-longlife setting, ramp start / end voltages match, set SoC manually to 88 to trigger a charging cycle given the battery is at 3.3 right now, and selected default settings for...
  • Post in thread: Ground Mounting Solar Evacuated Tubes

    Its a double envelope home that has two massive earth tubes in the Thermal Buffer Zone ... which is where our HRV will pull new air from to condition the living space air. The air changes per hour will be good for living. I have seen those ... pretty cool, first time I have ever heard someone...
  • Post in thread: shared neutral from combiner box?

    Thank you. We are going to be setting up our system this year and it should be interesting for sure. There are some other posts I plan to make soon which haven't been covered yet so I hope to contribute to the community where I can.
  • Post in thread: Ground Mounting Solar Evacuated Tubes

    Will reply to my own thread as I find information. Solar Hot Water Rules of Thumb Load Est: 20gal / person / day (seems high vs the way we use hot water) Collector Sizing: 1sqft per gal hot water needed Storage: 1(cold areas) - 2 (warmer areas) gal for each sqft of collector This means given I...
  • Post in thread: Batrium Watchmon Install

    Thank you both for your input. Pictured, although redrawn by hand as a rough representation, is the WatchMoCore + CellMate-K9 bundle ? https://www.batrium.com/collections/kits/products/watchmon-core-k9 Because it is built into the prewired SMA Midnite Panel? It wont be hard to ensure it is...
  • Post in thread: (image intensive) Re-purposing Radian Load Center for Battery bank and SMA SI Load Center

    Updates: Got everything wired up, was about to turn the ON switch "live" in video when I saw it wouldn't work as I expected because the battery was connected to the contactor then the contactor to the plate ... the issue being nothing would get power upon switching the switch to ON :D I had...
  • Post in thread: Batrium SMA Sunny Island Integration issue?

    @ChrisFullPower when you get it running let me know your firmware version ... I recall mine being ahead of what was on the site for download.
  • Post in thread: DIY Large insulated water drain back tank?

    Oh it will be lol ... our original "plan" was a 2 story 10k tank you would use to store rain water but built inside, it has since sized down to this. Tons of people build tanks of this size for indoor koi ponds, we do have in floor drains near this area. The 3/4 internal poly iso, R5? , was...
  • Post in thread: Two MN200 classics with breakers

    North east USA, I can ship but buyer pays shipping.
  • Post in thread: Two MN200 classics with breakers

    $1200 can take it all. I think the above without wires is 1500-1600 NIB.
  • Post in thread: How Often dO YoU Top Balance YoUr LFP BaNk?

    My batrium BMS resets my 100% SoC daily right now ... it is hooked up as a battery backup right now but every day at least once a day the battery is topped off and all cells go into bypass mode and the SoC is set to 100% ... So in some ways they are constantly top ballanced with this system :D
  • Post in thread: Batrium SMA Sunny Island Integration issue?

    bridging N tro the SB Frame ground worked for Island mode Now I need to get my "third" wire over to this thing. Just noticed I never brought over the EGC from the panel this thing hooks to >__< Just L1/L2
  • Post in thread: SOLVED: Batrium charging issue, seeking advice on debugging

    So far it is working better than before ... Key thing I see now is voltages ranging from 335-3.5 as it is top balancing with default ramped settings ... the requested Ah is only 6.0 as it thinks it is at 94% SOC ... when the voltage starts to bypass I think it drops to 0.6Ah ... first time...
  • Post in thread: Batrium SMA Sunny Island Integration issue?

    Had the relay trip while I was in the room so I pulled the short set of logs (as they are easier to manage) and looked at them. Don't see any errors (35A) being thrown ... only active warning (which is always there) is that the temp sensor isn't connected on the SMA SI (why have that if you...
  • Post in thread: Batrium Ramped Charging / Discharging

    No, full wire diagram here https://diysolarforum.com/threads/image-intensive-re-purposing-radian-load-center-for-battery-bank-and-sma-si-load-center.52698/post-687216 Battery > Meanwell 24dc power supply > Batrium CORE I haven't had this long and as soon as I saw the announcement from Batrium...
  • Post in thread: Batrium SMA Sunny Island Integration issue?

    just broke out book and saw that lol ... was about to post since I answered my own question.
  • Post in thread: SOLVED: Batrium charging issue, seeking advice on debugging

    UPDATE: All resolved, will continue to keep an eye on the terminal bolts. sometime around or before 02:50 last night the cells all bypassed and the Batrium marked that as 100% SoC (ignore the timestamps as the unit doesn't know its time zone) Looks like some cells bypassed a good 70watts over...
  • Post in thread: Batrium SMA Sunny Island Integration issue?

    yeah I have that downloaded :D was a lot of help that and this site for faster calculations vs doing it all by hand https://cryptii.com/pipes/integer-encoder
  • Post in thread: Batrium SMA Sunny Island Integration issue?

    AGAIN! ... 0430 today it looks like the power shut off ... I came in and the BMS again had reset itself to a default state, the battery voltage was about 30% SOC this time. I reset it all, and reset the SOC the configured the SI for VRLA and started things up to find the SI dumping 6000w into...
  • Post in thread: Batrium SoC stays same as voltage creeps down

    Varies but since I have the grid hooked up to the inverter the batteries are not really in use right now. This morning low voltage is 3.32, high 3.34, requested charging amps .6, actual charging amps .7, SoC 280.000 indicated. If I were to disconnect loads and simply let it sit it would...
  • Post in thread: LifePO4 batteries - what is your cutoff voltage?

    Using the default "long life" settings for batrium which places the low shunt cutout at 50.4 for discharging. It does have a low SoC cutout as well but it isn't enabled right now ... default is 20%, resume at 25% (meaning it will allow discharging at 25% SoC or greater.
  • Post in thread: Interesting Battleborn batteries failure

    Wonder if they pulled and tested the wires yet or swapped them around.
  • Post in thread: SMA Sunny Island wiring set up?

    This has been confusing me for the last couple of days. PV > SB (out) > AC1 BAT > SI > AC1 1) In the situation you have posted both the grid and the generator are optional, meaning this is an "offgrid" setup ... how does the SB know the "grid" is active (and thus produces max output of SB vs...
  • Post in thread: What generator works with SMA sunny island?

    Tried another green today, generac by briggs and stratton, wheel house 5500. No dice. Voltage was pretty high but in range, 130 per leg. Bounced between 126 and 130 range. Also tried to configure as grid and grid Gen and neither worked. There is a Honda with digital Avr i can rent and...
  • Post in thread: Batrium SMA Sunny Island Integration issue?

    Interesting, I didn't realize this but it 100% makes sense why this would be the case. I know I can semi-easily ground one end of this cable at the BMS ... the other end at the SI will be a little trickier ... will likely have to peal the cable back, expose the shielding, wrap and bond another...
  • Post in thread: SMA Sunny Island wiring set up?

    @Hedge Where did you get your SMA load shed relay? I looked around a bit and nothing was popping up less stuff in Europe ... even emailed SMA USA to see where I could get one but they haven't responded
  • Post in thread: What generator works with SMA sunny island?

    Update, and an odd one. I am seeing 200VAC on S1's AC2 on occasion with nothing hooked up to it. Also S1 has a asterisk after it which normally means AC2 input is in spec.
  • Post in thread: Batrium SMA Sunny Island Integration issue?

    As a side note / thought I just had ... Technically I could migrate the load shed function to use the Batrium Expansion board relays as a SoC limit / range but I want the SI to ideally control the load shed relays. The wiring would likely go SMA SI Bat + (4 pin connector) > Batrium Exp Relay >...
  • Post in thread: Batrium SMA Sunny Island Integration issue?

    The errors thrown right after the relay shuts off are the Low Battery Modes (bat preservation modes) ... these settings look like they have default values. I looked at the firmware versions, Got (in this order #1 - #4) 7.302, 7.300, 1.004, 1.000 ... not sure what the current firmware version is...
  • Post in thread: Batrium SMA Sunny Island Integration issue?

    The only thing this problem is preventing me from doing is buttoning up the system ... so the covers are off for now. It "runs" it just doesn't run like I want it to (that is with the SMA not throwing errors in its logs) ... We have had one light flicker event, but I didn't witness it so I...
  • Post in thread: Any way to commission a Sunny Boy without AC?

    Now thinking I need to drag my 280ah 48vdc battery up there which is a PITA and connect it to a currently crated MN SMA SI temporarily, commission that SI, then commission the SB, remove the battery and take it back home ... I swear that thing weighs at least 180 lbs :/ Thought about wiring up...
  • Post in thread: Final LFP Charging settings with Batrium BMS?

    It does BUT not for LFP batteries ... if you set the unit to LFP then it requires COMs from an external BMS In the SMA SI CAN protocol 0x351 is required and sets battery charge voltage, dc charge current limit, dc discharge current limit, and discharge voltage ... if you don't pass these it wont...

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