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can 6000xp inverters thermal throttle

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gisean04

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Edinburgh, Texas. USA
I got 2 6000xp units with 14700w of solar panels between the 2 units. but I never seem to get above 9000w for any length of time. i once saw a spike to 10.4Kw but only for a minute or two. now I'm stuck at 8500w max and it holds that for 3 to 4 hours. Could my units be thermal throttling themselves? i have a 14Kw eg4 wall mount battery that it could fill, so I have no lack of power demand. i live in south Texas this week every day will be over 100F with a heat index of 123F, and humidity is high. My inverters are not in direct sunlight but are in the garage area with outside air temps. they have good airflow around them. attached are some temp and usage charts. any thoughts would be helpful. right now I'm just about 1/2 my power coming from solar but I know there is more it can do, I just cant figure out why it's not.
 

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Are you hitting your charge current limit? Are you exceeding 125 amps on either inverter to the battery?
Battery temp at 125 might be an issue for throttling.
 
PotusGobbleBottom said:
Someone else with experience with that battery will come along. I dont know anything about them.
Click to expand...
I wonder if I'm hitting the dc amp limit. I read the manual and I see a temp and amp limit.

The inverter has two MPPT PV charging circuits. MPPT #1 and #2 will utilize up to 17 amps, which means two strings can be paralleled for any modules having less than 8.5A (Imp) rating. When sizing strings for each MPPT, they MUST be the same model, brand and # per string (series and parallel).
 
Are you closed or open loop with the battery? I suspect you are hitting the battery charge limit and you could test this by turning on a power hungry device in your house like your stove or clothes dryer and see whether you can then get more PV production showing.
 
You say potato . . .
1716681084950.png
Blue line is PV I have about 19KW of panels, line peaks at 15KW. Drops off when batteries hit 100%.

There is another 12% loss between the production and output that means I get to use around 13200 of the 15000 to charge batteries and stuff. so around 70% of my rated PV as output. Your showing around 60% 9000/14700. . . This does not seem way far off, and I have probably the most optimal sunshine of anywhere in the world, Hot and dry. How many strings? How many panels each? String layout? (S/P?) I have 6 inputs 4x8x455w 1x8x250w 1x7x250w Panel spec? Optimal string voltage should be around 300-400v under load.

If 4x8x460ish try pulling 1 string and see if your output drops proportionally. Walk the strings pulling 1 at the time, verify they all have the same degradation of output when removed.

I have my sh*t in an small room off the garage with no AC, it hit 138 in the room last summer here, when the temps were over 120F. Numbers are pretty consistent.
 
ksmithaz1 said:
You say potato . . .
View attachment 217650
Blue line is PV I have about 19KW of panels, line peaks at 15KW. Drops off when batteries hit 100%.

There is another 12% loss between the production and output that means I get to use around 13200 of the 15000 to charge batteries and stuff. so around 70% of my rated PV as output. Your showing around 60% 9000/14700. . . This does not seem way far off, and I have probably the most optimal sunshine of anywhere in the world, Hot and dry. How many strings? How many panels each? String layout? (S/P?) I have 6 inputs 4x8x455w 1x8x250w 1x7x250w Panel spec? Optimal string voltage should be around 300-400v under load.

If 4x8x460ish try pulling 1 string and see if your output drops proportionally. Walk the strings pulling 1 at the time, verify they all have the same degradation of output when removed.

I have my sh*t in an small room off the garage with no AC, it hit 138 in the room last summer here, when the temps were over 120F. Numbers are pretty consistent.
Click to expand...
inverter 1 has 2 strings each strings are 2 sets of 7 panels in parallel 300w panels. inverter 2 as 1 string that 2 sets of 6 panels in parallel, and another string of 9 panels. all the strings are on the low end for voltage could that be my problem? I'm under 250v on average. I have the battery get full and drop off, this is not that. i put of pic of the output that show the battery still low. I'm not hitting the battery max charging amp. i have seen upwards of 10.4Kw.
 
Thatsalottapanels. I count 49. You have 4 MPPT's you might get better performance if you get your VOC up closer to 500, but 250 should be OK for actual.. I don't have the MPPT specs but if your voltage is too low you could clip if your panels provide more AMPS than the MPPT can use, it's a balance, but that likely is not it. What is your VOC on the panels? Lots of arguments about parallel vs series, but if you have unobstructed mounting you can probably string 12-14 panels, most 300W are under 40v, and you can push the VOC to 600 on the EG4 stuff. The higher the voltage the lower the line loss and amperage on each string. Only wasting time to shuffle the config.

There are settings in the unit for max charging rates as well. What are they set to? Even if you are closed loop I think if you have the max set too low it won't charge beyond that rate. Per another comment above, can you add more load and spike the PV?
 
ksmithaz1 said:
Thatsalottapanels. I count 49. You have 4 MPPT's you might get better performance if you get your VOC up closer to 500, but 250 should be OK for actual.. I don't have the MPPT specs but if your voltage is too low you could clip if your panels provide more AMPS than the MPPT can use, it's a balance, but that likely is not it. What is your VOC on the panels? Lots of arguments about parallel vs series, but if you have unobstructed mounting you can probably string 12-14 panels, most 300W are under 40v, and you can push the VOC to 600 on the EG4 stuff. The higher the voltage the lower the line loss and amperage on each string. Only wasting time to shuffle the config.

There are settings in the unit for max charging rates as well. What are they set to? Even if you are closed loop I think if you have the max set too low it won't charge beyond that rate. Per another comment above, can you add more load and spike the PV?
Click to expand...
i got way more load than I got PV.
1716686797377.png
 
ksmithaz1 said:
Thatsalottapanels. I count 49. You have 4 MPPT's you might get better performance if you get your VOC up closer to 500, but 250 should be OK for actual.. I don't have the MPPT specs but if your voltage is too low you could clip if your panels provide more AMPS than the MPPT can use, it's a balance, but that likely is not it. What is your VOC on the panels? Lots of arguments about parallel vs series, but if you have unobstructed mounting you can probably string 12-14 panels, most 300W are under 40v, and you can push the VOC to 600 on the EG4 stuff. The higher the voltage the lower the line loss and amperage on each string. Only wasting time to shuffle the config.

There are settings in the unit for max charging rates as well. What are they set to? Even if you are closed loop I think if you have the max set too low it won't charge beyond that rate. Per another comment above, can you add more load and spike the PV?
Click to expand...
this is what my solar panels are.

signaturesolar.com

9kW Pallet - Hyundai 300W Solar Panel (Black Frame) | Half-Cell Mono-Crystalline | HiA-S300HG | Full Pallet (30 Solar Panels) - 9kW Total

Signature Solar provides solar panels, off-grid solar systems, grid-tie, and hybrid systems. Quality solar inverters, bifacial solar panels, complete solar kits, solar batteries. Featuring brands such as EG4 Electronics with their solar battery, LifePower4 and EG4 LLifePower4 and EG4 LL
signaturesolar.com signaturesolar.com
 
Your PV curve looks normal and smooth. This would seem to indicate you are maxing out your PV. To that end looking at the panels:

gisean04 said:
this is what my solar panels are.

signaturesolar.com

9kW Pallet - Hyundai 300W Solar Panel (Black Frame) | Half-Cell Mono-Crystalline | HiA-S300HG | Full Pallet (30 Solar Panels) - 9kW Total

Signature Solar provides solar panels, off-grid solar systems, grid-tie, and hybrid systems. Quality solar inverters, bifacial solar panels, complete solar kits, solar batteries. Featuring brands such as EG4 Electronics with their solar battery, LifePower4 and EG4 LLifePower4 and EG4 LL
signaturesolar.com signaturesolar.com
Click to expand...
1716736304755.png

So if you have sets of 7 in parallel 9.33+9.33 = 18.6A

The 6000XP:

1716736449469.png

Maxes out at 17A. Any time you have a parallel situation You could be clipping an amp or so at peak times. With a 480v max you would be limited to 11 or 12 panels in a string. Your panels are slightly sub-optimal for the inverter MPPT's. If money is no object, I'd add a 3rd unit, and break it into 5 strings of ~10 panels each.
 
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