Buying a diy box also?
SRNE 20KW parallel ASP journey.
- Thread starter 42OhmsPA
- Start date
42OhmsPA
Who likes Electrical Gremlins?
No. There's room on my shelf / rack for 2 more packs, I designed it to hold 6 when I built it.
Someday I'll build out a cabinet like Zwy.
42OhmsPA
Who likes Electrical Gremlins?
Said shelf here.
Post in thread 'SRNE 20KW parallel ASP journey.' https://diysolarforum.com/threads/srne-20kw-parallel-asp-journey.85905/post-1161200
I'm thinking I'll run this pack 16S2P. I might even reconfigure the EVE cells the same way. It's extremely rare I run over 60A through each of the 4 current packs, C rates are low. Keeping 4 packs will also help keep BMS SOC somewhat accurate, even though I don't use comms. 6 would be miserable, 4 already irritates me enough...
Post in thread 'SRNE 20KW parallel ASP journey.' https://diysolarforum.com/threads/srne-20kw-parallel-asp-journey.85905/post-1161200
I'm thinking I'll run this pack 16S2P. I might even reconfigure the EVE cells the same way. It's extremely rare I run over 60A through each of the 4 current packs, C rates are low. Keeping 4 packs will also help keep BMS SOC somewhat accurate, even though I don't use comms. 6 would be miserable, 4 already irritates me enough...
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Brucey
Velcro Man
I'm very close myself.
Brucey
Velcro Man
Maybe zwy can kit out that style of cabinets with everything installed except the cells, for the diy market after he retires from his main job. Shipping won't be pretty.
42OhmsPA
Who likes Electrical Gremlins?
I saw the Hithiums sold out of US stock and the REPT have been dropping daily. It was time to pull the trigger.
timselectric
If I can do it, you can do it.
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Yup, it's that time of year for me, too.
But the LF280K's that I usually get, are sold out.
I Guess I'm going to have to try out either the LF304's , or the MB31's.
I have about a month to decide.
But the LF280K's that I usually get, are sold out.
I Guess I'm going to have to try out either the LF304's , or the MB31's.
I have about a month to decide.
Zwy
Emperor Of Solar
I'm still working over 60 hours per week even in semi retirement. Come another 2 weeks, I'll have the occasional 100 hour week during heat waves.
Building the boxes could be done easily. But for the price of used ones out there, why bother?
Get the box similar to the one in the shop. 20" deep. It will make it much easier, even if you only put in 4 packs the full length. If you can find one, find the 72" W x 20" D. That would be perfect for 8 packs with more room in the center. The 62" works but the RH door will have to be be unbolted if you want to get in deep for maintenance.
B-Mod
Solar Wizard
My partially finished combiner box. 6 10k Asp"s combined for 3 phase 200 amp output
cs1234
Solar Wizard
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- May 9, 2022
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That looks very nice and organized.
ricardocello
Watching and Learning
Those power distribution blocks (“A” “B” “C”) are awesome!
And not cheap either!
timselectric
If I can do it, you can do it.
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You can find them on Ebay, pretty cheap.
1/10 of regular price.
1/10 of regular price.
B-Mod
Solar Wizard
And very large! Way too big of a foot print for this size box. But it was cheap ish. Not too many choices when you need 4/0 output sized wire.
B-Mod
Solar Wizard
Pretty much cramming in is much stuff as I can in a little box and save some room for future updates, growth, lol.
Sorry to be the 'Karen' but I hope you never have to troubleshoot that box.
ZePrez
New Member
If this is not asking too much . Would you share material list and connections for this combiner? Great job!!!
ZePrez.
B-Mod
Solar Wizard
I built it, I can fix it. Actually my daughter wired it, so maybe I am f***"ed.
ricardocello
Watching and Learning
For tight spots like that, I prefer 200C silicone wiring as it is very flexible.
THHN gives me arthritis.
THHN gives me arthritis.
42OhmsPA
Who likes Electrical Gremlins?
I give up fighting the sun for the day.
New record achieved.
Need to get those last panels on the 4th MPPT if I want to break 100 in a day.
Oh now FedEx is supposed to deliver tomorrow, delayed a day.... This time of year I'm in no hurry for more cells (now there will be a week of clouds).
New record achieved.
Need to get those last panels on the 4th MPPT if I want to break 100 in a day.
Oh now FedEx is supposed to deliver tomorrow, delayed a day.... This time of year I'm in no hurry for more cells (now there will be a week of clouds).
B-Mod
Solar Wizard
Operation 3 phase is not working good. I have 3 inverters in 3 phase, setting 31 is 3p1, 3p2, 3p3, setting 38 is 120v, and setting 68 is 0, Voltages from inverters to neutral stay rock steady at 120v, but phase to phase if a 20 to 30amp load in single phase, say a to b phase, that voltage will drop as low as 190v, and goes lower as you add load. Not sure what is going on here. I would have all six inverters hooked up but I am waiting on a db15 cable to get here before I can do that.
Last edited:
timselectric
If I can do it, you can do it.
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120v to neutral, while 190v between legs?
B-Mod
Solar Wizard
B-Mod
Solar Wizard
20 amps of load added to a to contact phase. Look how voltages go up and down. Every thing was 208v with minimal house load. 1st meter is voltage a to b, a amperage. 2nd meter is b to c voltage, b amperage. 3rd meter is voltage a to c, c amperage.
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