Too much Input Power for my Charge Controller?

My son has given me four JASolar PV panels. Each panel is rated at 325 W with a Vmp of 37.49 and a Voc of 46.48. I believe that makes them nominal 24V panels. The four panels will be run in series. I recently purchased an EPEVER 4210 charge controller and now I was wondering if it will be able to withstand the input of the four panels. The Charge controller states that Max. PV open circuit voltage is 100V. But does that mean the panels input will make a total of 96v (24V times 4), or will they input 149.96v (37.49Vmp times 4), or will they input 185.92v (46.48Voc times 4). I'm not so much concerned about how much power I may be losing as I am concerned about burning down my shed from this off grid system. I'm only going to connect it to a two 12v 200ah battery bank. In addition the Charge Controller also states that the Max. PV input power is 520W(12V) & 1040W(24V). Does this mean 325W times 4 will be 1300W and too much for the controller?
Thanks for any help.
Comments
KID #51B 4s 140W to 24V 900Ah C&D AGM
CL#29032 FW 2126/ 2073/ 2133 175A E-Panel WBjr, 3 x 4s 140W to 24V 900Ah C&D AGM
Cotek ST1500W 24V Inverter,OmniCharge 3024,
2 x Cisco WRT54GL i/c DD-WRT Rtr & Bridge,
Eu3/2/1000i Gens, 1680W & E-Panel/WBjr to come, CL #647 asleep
West Chilcotin, BC, Canada
http://www.epsolarpv.com/en/uploads/news/201710/1508812885787574.pdf
Yes that is correct!
Best to look at the manual before deciding to run them in series! or before deciding on a charge controller as @westbranch pointed out.
Yes, but not with 4 in series. Most quality charge controller can handle a bit of 'over paneling'. Epever has a handy chart in the manual;
The actual Max appears to be 92 volts VOC at STC (25degrees centigrade). 2 in series would be over the 92 volt max as I read your manual. So the panels would need to be 4 in parallel to work and not have a chance of damaging your charge controller. It might be worth asking them, but it looks like this is what they want from the manual.
Will the batteries be in series for 24 volts or in parallel for 12 volts?
As the chart above states the charge controller can handle quite a bit above that amount. In general you should only expect about 75% of the name plate value when the batteries can accept the full amount of incoming current, while in 'bulk'.
https://www.amazon.com/dp/B00YG2BZM0/ref=asc_df_B00YG2BZM05503684/?tag=hyprod-20&creative=394997&creativeASIN=B00YG2BZM0&linkCode=df0&hvadid=193994910693&hvpos=1o1&hvnetw=g&hvrand=1325996051958514102&hvpone=&hvptwo=&hvqmt=&hvdev=c&hvdvcmdl=&hvlocint=&hvlocphy=9022946&hvtargid=pla-313511126853
The charge controllers are rated on output current/amperage. The trick in this case is that MPPT type charge controller need a bit of 'head' room above the charging voltage. So the voltage may be too low to work well with the MPPT charge controller if you are running the batteries in series for 24 volts. If you are running them in parallel, then you were always going to have too much wattage coming in for the available 40 amp output. Even considering the 75% NOCT (Normal Operating Cell Temperature) value of about 1300/.75=925 watts 925/14 volts (charging voltage for 12 volts) = 66 amps.
2.1 Kw Suntech 175 mono, Classic 200, Trace SW 4024 ( 15 years old but brand new out of sealed factory box Jan. 2015), Bogart Tri-metric, 700 ah @24 volt AGM battery bank. Plenty of Baja Sea of Cortez sunshine.
2.1 Kw Suntech 175 mono, Classic 200, Trace SW 4024 ( 15 years old but brand new out of sealed factory box Jan. 2015), Bogart Tri-metric, 700 ah @24 volt AGM battery bank. Plenty of Baja Sea of Cortez sunshine.
https://www.solar-electric.com/dinrail-6-inches.html
and a breaker from NAWS
https://www.solar-electric.com/midnite-solar-mneac40-breaker.html
Nice to have a breaker on the output side as well to isolate the charge controller.
https://www.ebay.com/itm/8-AWG-8-Gauge-One-Pair-Black-Red-Solar-Panel-Cable-Wire-MC4-Connector-/262589569814
|| Midnight Classic 200 | 10, Evergreen 200w in a 160VOC array ||
|| VEC1093 12V Charger | Maha C401 aa/aaa Charger | SureSine | Sunsaver MPPT 15A
solar: http://tinyurl.com/LMR-Solar
gen: http://tinyurl.com/LMR-Lister ,
KID #51B 4s 140W to 24V 900Ah C&D AGM
CL#29032 FW 2126/ 2073/ 2133 175A E-Panel WBjr, 3 x 4s 140W to 24V 900Ah C&D AGM
Cotek ST1500W 24V Inverter,OmniCharge 3024,
2 x Cisco WRT54GL i/c DD-WRT Rtr & Bridge,
Eu3/2/1000i Gens, 1680W & E-Panel/WBjr to come, CL #647 asleep
West Chilcotin, BC, Canada
The in line fuses will be your 'combiner'
You don't have to have any lightning protection. That's the thing in the lower left hand corner, marked SPD 300.
If you are ground mounting these, I wouldn't worry and in fact if you are putting in your shed and there will be some space say a foot between the shed and panels, I'd 'float' the system rather than ground. This also throws out the Ground fault protection. There is some minor risk, I'd say very minor. and even some benefit, a near by lightning strike is less likely to damage your equipment.
Your branch connectors are pretty much what the bus bars are...
The top right thing is your charge controller, you have 40 amp breakers in front of and behind it
2.1 Kw Suntech 175 mono, Classic 200, Trace SW 4024 ( 15 years old but brand new out of sealed factory box Jan. 2015), Bogart Tri-metric, 700 ah @24 volt AGM battery bank. Plenty of Baja Sea of Cortez sunshine.
Solid connector;
Wired;
If you can't find the wired in 8 gauge.
I know they make the solid in 4 to 1, but I think it would be a huge pain if you had to disconnect them, particularly with fuses. I'm sure it would be tempting to have all the fuses in one place. I have no real experience with this, but know MC4 can be a pain to take apart even with the proper tools.
Second system 1890W 3 × 300W No name brand poly, 3×330 Sunsolar Poly panels, Morningstar TS 60 PWM controller, no name 2000W inverter 400Ah FLA 24V nominal used for water pumping and day time air conditioning.
5Kw Yanmar clone single cylinder air cooled diesel generator for rare emergency charging and welding.
2.1 Kw Suntech 175 mono, Classic 200, Trace SW 4024 ( 15 years old but brand new out of sealed factory box Jan. 2015), Bogart Tri-metric, 700 ah @24 volt AGM battery bank. Plenty of Baja Sea of Cortez sunshine.
2.1 Kw Suntech 175 mono, Classic 200, Trace SW 4024 ( 15 years old but brand new out of sealed factory box Jan. 2015), Bogart Tri-metric, 700 ah @24 volt AGM battery bank. Plenty of Baja Sea of Cortez sunshine.