Hiya, solar panel is connected directly to the Bluetti
Hi @Paul2
the prodction of solar energy and how much it is can be influenced by many factors. Shadows, angle of the panel, idensity of light/sun. Its also possible that you solarpanel might defective or parts of it. You can try to part shadow it and see if the ooutput to the AC180 changes. If not, then something is wrong with the panel
Good day people. Wanting to confirm my proposed Bluetti set up for my off grid shop. I have AC 300+B300k +B300k. I am planning on this system via PV array: 6 each, Renergy 320W rooftop panels. The panel specs are: 320w, 43.82 OCV, 8.46A, 20A fuse rating. Any opinions on if got my math right or general comments??
Appreciate
Cheers
Hello @alvey1958,
Based on the information on the panels, and that the AC300’s max solar voltage per input can be 150 volts, and the total panel voltage will need to be some amount less than that, you can have a maximum of 3 panels in series (3 * 43.82 = 131.46 volts).
The AC300 also has a maximum current of 12 amps, again per input, and your panels can output a maximum of 8.46 amps. So, for your panels I would recommend having two arrays of 3 panels in series. Connect each array separately to each of the solar MPPT inputs on the AC300. This will utilize the full capacity of all 6 of your solar panels.
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Thank you for your response and expertise. I truely appreciate your assistance!!!
All makes sense.
Cheers!
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Hello I’m looking for help. I’m looking at installing solor panel to my AC300. The one’s I’m looking at buying are 400 watts, 37v, and 13.7 amps. My question is how can i use 4 ouf these and stay under the restrictions? Thanks
Hello,
Here is some important information regarding solar connections for the AC300:
- The AC300 has two MPPTs, and each can connect the number of solar panels shown in the image below.
- For optimal performance, it is recommended to connect all solar panels in series. The PV input voltage range for the AC300 is wide, from 12V to 150V, while the maximum input current is only 12A. Connecting in series increases both voltage and current, resulting in higher efficiency. Please note that different types of solar panels should not be mixed, as this can affect efficiency and may damage the panels over time.
- If the solar input current exceeds 12A, our device will limit the current, and any excess will be wasted. Therefore, while the current can exceed the limit, the voltage must not.
- The solar input power can exceed 2400 watts as long as the total PV open-circuit voltage (VOC) for each string does not exceed 150V.
If you have any further questions, please feel free to reach out!
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I just purchased 12 more panels that have a VOC of 37.3
These will go to my two Apex 300.
I got them from A1solar.
I already have two Ac300 with panels capable of 2400 watts input but usually I get a max of 21oo watts.
Hi all,
Newbie to solar arrays outside of the plug and play portable panels. I feel like I’ve hit a wall in my search to fully understand the math behind properly sizing solar setups. Hoping for some assistance to either validate my math or provide alternative option!
I have the AC200Max that I’ll be using to power my truck camper. Most things will be powered off a fuse panel running off the 12V/30A outlet - lights, fridge, fan, starlink, etc.
Currently, my Bluetti PV350 portable panel gets plugged in and I call it a day, but I’m looking to expand the solar input with some rigid panels on the roof for more consistent charging. Starting with ~200W and potentially expanding to ~400W down the road. I’ve seen good reviews for the CallSun solar panels and they’re reasonably priced.
My goal is to have the roof solar running full-time and, when needed, plugging in the portable panel to add some extra juice. Individually, everything seems like it would work fine. I’m struggling to figure if the combination of rigid and portable panels will work when hooked up together. Ideally everything in parallel to help when some are partially shaded. Based on the specs below, what would be my best option to get the most solar input without exceeding the power stations MPPT’s specs? I’ve included some math I’ve done below as well to see if I’m thinking about it correctly or if I’m way off. Open to recommendations if there are better options for wiring or panels that are better spec’d for the AC200MAX!
Specs below for reference:
-
Bluetti AC200MAX - Solar Input
Input: 900W Max
VDC: 10-145 VDC
Amps: 15A -
Bluetti PV350 Portable Panel
Power: 350W
Voltage Max Power: 37.5V
Current Max Power: 9.2A
VOC: 46.5 -
CallSun 200W Panel
Power: 200W
Voltage Max Power: 23.74V
Current Max Power: 8.43A
VOC: 27.31V
Below is based on all panels being hooked up at the same time to determine feasibility at max input
Initial Setup w/ 350W portable panel + (1) CallSun 200W rigid panel ran in parallel. Seems easiest and most efficient for both panels.
- 9.2A + 8.43A = 17.63A which is over the AC200MAX’s max solar amp rating but is under the VOC… is that ok? Does the MPPT handle a coupleamps higher than the listed rating? Is going over voltage the main concern? To be honest, I’m getting hung up on how the VOC’s interact when using panels with different VOCs in parallel since most examples online only show multiples of the same panel with the same specs.
If I wanted to add another CallSun 200W panel down the road, we’d have the 350W portable panel + (2) CallSun 200W rigid panels. Ideally wanting to run in parallel but assuming I’d need to run the CallSun’s in series to stay within the power stations amp requirements.
-
All in Parallel
9.2A + (8.43A x 2) = 26.06A
way over 15A… assuming that’s not recommended
46.5V + 27.31V = 73.81V
is this right? would they be added since they’re different or the difference doesn’t need to be accounted for as long as the individuals are within the 10-145V limit? -
CallSun in Series, 350W portable in parallel
9.2A + 8.43A = 17.63A
slightly over 15A
46.5V + (27.31V x 2) = 101.12V - within power station limits
I’ll stop rambling… Hopefully this all makes sense and some solar wizard can provide some assistance.
Thanks!
Hello,
- The AC200Max can connect the number of solar panels shown in the image for each input, and it is best to use solar panels of the same specifications.
- It is recommended to connect all panels in series because the AC200Max’s PV input voltage range is 10V to 145V, with a maximum input current of only 15A. Series connections increase voltage and current, making the overall efficiency higher. Please note that different types of solar panels should not be mixed, as this will affect efficiency and could damage the panels over time.
- If the solar input current exceeds 15A, our device will limit the current, but any excess will be wasted. Current can exceed limits, but voltage must not.
- Solar input power can exceed 900 watts, as long as the total PV VOC does not exceed 145V.
If you have any other questions, please feel free to contact me!
Sounds like the best option would be to have the permanent solar panel on the roof as the primary source of power. Say I was parked in a shaded area, I could then unplug them and swap in the portable panel - but not use them both at the same time.
Another idea… could I have the CallSun panels I listed previously on the roof wired into the AC200MAX solar input and then simultaneously use the D050S DC Charging Enhancer with the 350W portable solar panels? Will the internal MPPT and D050S DC Charging Enhancer even everything out so I can use them all together?
Hey guys
I am setting up an offgrid system with the ac500 + 2 b300k (maybe will add the new b500k)
I understand that there is 2 mppt charge controllers that both are capable of 1500 watts (150v 15amps)
I have 12 solar panels 325w 40voc 10Imp
I just want to know if there is benefit to doing 2 arrays 3s2p.
This should give maximum of 1800w at 120v and 20amps (roughly and theoretically)
I am just unsure whether the mppt would be able to pull the full 1500 watt limit if the array was producing that or would the fact that the array is 20amp and only be able to pull 3/4 of that, due to the 15amp limit.
I understand that the ac500 is “pulling” the power it needs so will only draw a maximum if 15 amps and over panelling wont cause damage to the system if i keep the voc below 150 but just want to confirm that it is not a complete waste doing 3s2p over just 3s.
If anyone has anyone links they have found helpful in understanding pv array grounding, bonding and surge / lightning protection having a bit of a hard time trying to wrap my head around the differences and what needs to be done to maximise safety of people/house/bluetti system
Thanks
Also i do have questions about grounding the ac500 but this is probably not the right thread. I understand that it is designed to use the ground through the ac charging port being plugged into a wall plug that is grounded, but if i am using the ac500 to power my tiny home through a 15amp ext lead that provides power to all the sockets in the tiny house then plugging the ac500 back into that socket that seems like it could cause issues? (this in australia and all our sockets have on/off switches so it could be in the off position)
Correct. Going over the Amps isnt a problem, overvoltage is. Also keep in mind to have a certain reserve with the 150V limit. Better to not fully utilize it because under certain circumstances, the voltage might be higher and kill your MPPT
Hello all, i brought a Dihool HASPD 2S 500V DC surge protection box. I will be running 2 strings of 3 400 watts solars panel in series to my bluetti ac300. My issue is i can see where i would run my wires into the box, but im confused on coming out of the box. Do i jus[quote=“BLUETTI, post:1, topic:35619, full:true”]
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t connect my wires with the wires already on the breaker? Same for the ground. The instructions for this thing sucks. Thanks
Questions, i just brought a Dihool solar disconnect switch/surge protector. The instructions are not good for Diyer’s. I have a 2 in 2 out 40 amp Dc 500v. I know where to insert the wires going in the box, the issue us wires coming out of box to my AC300. Do they just get inserted with the wires that are already in the slots? Thanks
Continuing the discussion from Solar Panel Q&A List - Post your questions about solar:
Group. For my off grid system: Apex300 + 2- B300 batteries, I am planning on connecting 2 Separate strings of 4 each Renogy 320watt pv panels wired in parallel. My question. Since in parallel, my total voltage will be within the limits of the controller, however the voltage of 4- 320watt pv panels exceeds the controler port limit of the Apex 300 by 80 watts : 1280 watts vs 1200 watt port. I have read that even though this over supply of dc input wattage will occur, the controller will limit the total to 1200watt max, so, no damage issue, just no use of the 80 watts of generated dc input. Is this a true statement/understanding about the controller limiting the dc watt input overage? No damage? Reminder, I will connect 2-strings of 4 panels- 1 string per 1200w controller port.
Sorry correction: i said “voltage” will exceed port limit of 1200watts- meant Wattage will exceed port limit of 1200 watt.oops