NOTE: 1 Wifi module required per inverter when requiring remote monitoring (not required for inverter operation)
This fills a particular market niche that we just weren’t getting a product for.
Did you know that Growatt is the only Chinese inverter manufacturer that received the “All Quality Matters” Award by TuV Rhineland Germany.
Create a video of how you installed your system
The Solar Panels you chose, and why (Watts, Volts, Amps, Wire size chosen, length of run, using online volt drop calculator etc)
The Battery you chose, and why.
Inverters menu and operation (What mode you are using it as, and why)
Load testing your system
If you have two or more units, split phase operation
Charging via generator (optional)
How and where the unit is installed and hooked up.
You are welcome to call and ask me any questions you may have along the way, I am happy to guide you through the process, and not leave you blind.
I can make my own videos, but every day, something else seems to interrupt my day, so I am in effect buying your time.
If your video at least touches on some or all of these points, I will refund you $100 on this purchase
US Shipping & Stock. SPF 3000TL LVM – 48P solar 3KW 48V Split phase capable pure sine wave output (also available in 24V, 3KW), stack-able. Supports Li Ion and Lead Acid, and other chemistries between 40V and 58V. Tesla batteries not recommended, as they are actually 40V batteries sold as 48V. LiFePO4 are great, so are the Nissan Leaf Li-IONS
NOTE: These units do support the Growatt Batteries with Growatt BMS (these will be available later on in the year), for now, choose battery type “USR” or USER, and enter in your battery suppliers (Bulk, Float, Low Voltage Cutoff, and Charging Amps) – Your BMS will NOT communicate with the inverter
(If you want to mess with the BMS protocol to interface to your Arduino or whatever, the protocols can be found at usa-mpp-solar.com/manuals/gw)
Another note, there seems to be a lot of confusion about BULK and Float Charge Setting.
Bulk Charging, is usually the 90 or 95% or less than MAXIMUM Battery voltage, this is where the fast charging mode occurs. (usually around 58V) (contact your supplier)
Float Charging (holding charge), is the resting or nominal voltage of the Li Ion or LiFePO4, when it is fully charged, but now in a resting state with no load, usually around 51 to 52V for LiFePO4 (contact your supplier)
Low Voltage Cutoff, this is the voltage the inverter needs to turn off before depleting the battery – you want your inverter to shut off BEFORE your battery to dies, or the BMS to disconnects (usually around 47V or whatever the 20% charge voltage is)
This unit is not a knockoff like (POW EASUN etc.) This is a very well built / designed product, otherwise we wouldn’t sell or support it.
Supplied by a top tier support outlet here in the USA, (Utah).
Parallel Kits already built in,
super quiet operation.
Very detailed LCD display
5-in-1 unit. (Not Grid Tied – no feedback, only Grid assist – the load gets switch over to grid when all else fails)
1) 6000 W Pure Sine wave output expandable up to 18 kW (single or Split Phase configurable – will need to all be connected to the SAME battery, make sure its large enough to handle the load for the time – usually 2 days or more)
(6000 / 240 = 25A or 6000 / 120V = 50A)
2) 2 x 4.5kW MPPT Solar Charge controller (9kW of Solar)
3) 2 x 60 A (120A) 48V Utility Battery Charger (In case your battery level falls below your set point)
4) UPS function, wire it to the Utility power, if battery power is too low, the system automatically switches the load to Utility power
5) Single 120V 60Hz , Split phase (120V – 0 – 120V ) (includes parallel board for each unit)
6) Pure Sine wave output expandable up to 18 kW (single or Split Phase configurable – will need to all be connected to the SAME battery, make sure its large enough to handle the load for the time – usually 2 days or more)
Growatt is well known brand amongst solar professionals
The generator charger is a different beast to the solar charger. (Does not utilize the Bulk and Float Charge settings)
It works on a float valve type principle. (triggers when battery voltage drops below that on setting 12 – set the voltage higher than current battery voltage to start charging right away)
Stops charging from Generator when setting 13′ s voltage is reached
Will not start charging the battery again until it drops below battery voltage – in setting 12.
Setting 01 set to SBU to activate setting 12 and 13.
Setting 02, is the Max charging current from Solar + Utility/Generator
Setting 11, is the Maximum Generator/Utility charging current @ your battery voltage (not at 120V)
Setting 14, make sure this setting includes the option to charge from utility/generator (see manual)
Note, setting Setting 11 too high for your generator may cause your generator to falter at startup, and cause the Inverter Charger to lose synchronization with the Generator (58 to 63Hz), if in doubt start small, and work your way up.
Auto Start Function for the Generator (optional)
Inverter Dry Contact relay output triggers according to the above settings, when battery charge is requested (Normally Open/Normally Closed Contacts) , it is a simple 2 wire system, your generator will need to be a 2 wire start system (the generator needs to start itself when circuit is closed, and stop when circuit opens) – this can be wired directly to the dry contact input on the inverter
Hint, use this dry contact relay output like a switch to turn on a light or a buzzer (wire it in series with the battery , or inverter output to the light/buzzer ) to let you know the battery is low, and needs charging (manual notification)
If you have any questions, feel free to reach out.
- 3000TL LVM-48P User Manual
- Video: Parallel Configuration on 3000TL LVM-ES (Same process for 48P)
- Operation Overview
William (Bill) Johnston –
I’ve a licensed Solar Contractor for about 10 years and was looking for an inexpensive inverter solution for several disabled seniors and veterans in my community. But I wanted one with a better warranty and name recognition than MPP solar (no nock intended). I’ve worked on numerous Growatt systems overseas and they are very well built and reliable. I purchased a pair of the SPF 3000 LVM’s in 48vdc. They’ve been running flawlessly for almost 6 months. They’re not Grid-Tied but can be used as (what we used to call) Grid-Support daily. Should my battery voltage drop below my threshold it automatically reverts to Grid Power. I tied it into my Dedicated Load Panel and run it 24/7 off of my 250AH LifePo4 Battery Bank. It powers all major 110vac appliances such as refrigerator, deep freezer, microwave, toaster, toaster oven, coffee and espresso machines, all household ceiling lights/fans, WiFi router/modem, Alarm System, 2 Out buildings and 2 minisplits. They have been rock solid. I’ll be purchasing more shortly for customers. One Caveat these systems are a Great buy but you can’t compare them to a Sonnen, SMA, Outback or Sol-Ark, all of which we install, But they come at a great price and therefore make Solar an viable option for many more people. Ian will take good care of you and Growatt is a solid Tier 1 Manufacturer around the world.
james B bowser (verified owner) –
I HAVE PURCHASED THIS FROM WATTS247. THEY ARE INSTALLED AND RUNNING OFF BATTERY HOOKED TO GRID AT THIS TIME. THEY ARE WORKING WELL SO FAR. WILL BE PUTTING IN THE GROUND MOUNT SOLAR ARRAY SOON. THE IRONRIDGE SOLAR COMPONENTS ARE ON BACK ORDER. THEY ARE FROM A LOCAL SUPPLIER. I WILL UPDATE AFTER THE GROUND MOUNT IS INSTALLED AND THE SOLAR PANELS I AM GETTING FROM WATTS247 ARE HOOKED UP. I HAVE CALLED WATTS247 A COUPLE OF TIMES ALWAYS ANSWERS OR CALLS BACK VERY SOON.I WISH HE CARRIED ALL THE PRODUCTS I WANT.
We are trying to get there, solar combiner boxes first, as well batteries etc.
Our new warehouse has been delayed by 9 months , but now we are working feverishly on completing it. That way we will be able to carry more items
Thanks for the feedback
Don West –
Bought 2 and they work perfectly. Had an issue w/ FEDEX and Mike @ 24/7 resolved. Great support and customer service. Will add (2) more for 12kw to run completely off grid.