Growatt?

[John Frum]

It would appear so. I am concerned there is a typo. The surge rating is listed as 20ms - milliseconds. This should be seconds. I'd get clarification.

Again, it's only needed if you have surge loads, i.e. electric motors, power tools, compressor, etc.

It probably is 20 Ms.
About 1 cycle of alternating current.

 

[snoobler]

I wish it didn't come across as so ostensibly lining the pocketbooks of European executives. It seems their charge controllers are inflexible in their increments, as if everything were some sort of upsell."

I didn't have to make any assumptions based on your lack of knowledge of SCC specs. The above paints a pretty clear picture of your world view.

It only comes across that way because YOU see it that way. Rather than extend a benefit of a doubt, you assume the worst.

 

[snoobler]

It probably is 20 Ms.
About 1 cycle of alternating current.

Yeah, but for a LF inverter? Shame.

 

[Cancerfood]

Growatt 48V 6kW Split Phase 120V/240V Package 2 x 4500W MPPT (2 x SPF 3000TL)
I'm eventually going to stack two or 3 because I need 8000w to run my solar..
Questions:
1. Any pros and cons you can think of? the reason I like it a lot is the 2 yr factory warrantee.
2. What does the X2 mean in the image?
Thanks as always

Hello, I am curious how your system has come along? I too am in a similar spot and figure I will try out the growatt 6kw. What battery solution did you use?

 

[blfinish]

Hello, I am curious how your system has come along? I too am in a similar spot and figure I will try out the growatt 6kw. What battery solution did you use?

Still working on it, hit a cpl of snags. I actually moved up to the 12kw model as I just needed more power. I’m going with Big Battery 48v 104ah (4)
(24) 350amp panels clean edge
I’ll keep everyone posted.
Good luck.

 

[Cancerfood]

The data sheet says that the max pv array for the 12k is 7000kw. How are you going to wire up 8400kw pv to the inverter? I’ve heard that often a inverter can be over powered, but didn’t know if the growatts can.

 

[blfinish]

The data sheet says that the max pv array for the 12k is 7000kw. How are you going to wire up 8400kw pv to the inverter? I’ve heard that often a inverter can be over powered, but didn’t know if the growatts can.

Not sure on that just yet.

 

[mad.styles]

Does the growatt require a bms communication in order for it to work?

 

[blfinish]

Growatt 48V 12000T 12kW Split Phase 120V/240V output (100A at 120V ,50A at 240V) – Watts247.com

watts247.com

If you go to this you can get just about all the info you’ll need

 

[mad.styles]

Thanks for the reply. I was asking cuz i wanted to build my own diy battery banks and the bms I was using would not be able to communicate with the inverter. Base on what I read it seems that it did not require bms communication.

 

[Dzl]

Thanks for the reply. I was asking cuz i wanted to build my own diy battery banks and the bms I was using would not be able to communicate with the inverter. Base on what I read it seems that it did not require bms communication.

I am not aware of any inverter or all-in-one that needs BMS communication.

 

[blfinish]

I’m a real novice and have a few pros helping me out. Sorry I can’t be more help

 

[mad.styles]

I’m a real novice and have a few pros helping me out. Sorry I can’t be more help

No worries. This help since this one was one of my doubts about Growatt.

 

[Cancerfood]

Thanks for the reply. I was asking cuz i wanted to build my own diy battery banks and the bms I was using would not be able to communicate with the inverter. Base on what I read it seems that it did not require bms communication.

I too am building my own battery banks. I plan on 2 ea. 280ah 8s battery sets to make it 48 volts. I purchased two 8s Overkill bms’s for both sets. I’m wondering how to connect to the Growatt in this scenario.

 

[Dzl]

I too am building my own battery banks. I plan on 2 ea. 280ah 8s battery sets to make it 48 volts. I purchased two 8s Overkill bms’s for both sets. I’m wondering how to connect to the Growatt in this scenario.

What attracted you to 2 x 8S in series as apposed to 1 x 16S?

 

[Cancerfood]

I thought I was going to use a 24v solution and decided to jump to 48v after I already bought the 8s. So now I either need to get another 8s or buy a 16s bms. Overkill does not make a 16s. Being a newb, I am open to suggestions!

 

[blfinish]

After all of the great response I went up to the 12k unit spf 12000

 

[blfinish]

The data sheet says that the max pv array for the 12k is 7000kw. How are you going to wire up 8400kw pv to the inverter? I’ve heard that often a inverter can be over powered, but didn’t know if the growatts can.

I know some will be series and some parallel. That’s about it at the moment. Hopefully I will get most everything put together in the next cpl of wks

 

[Burke]

New to the forum, currently working on a critical circuit UPS for the house, and plan to add PV array next year some time once it is up and running. I experience a lot of brown outs, and short term power outages - maybe 30 minutes to 30 hours from history over the last 5 years. The brownouts killed at least one television already. I will be using street power to keep the battery charged to keep everything running, and gives me plenty of time to hook up the generator to keep the batteries charged if it is going to be a longer power outage.

I ordered the low frequency Growatt 6000T, split phase, transformer unit, it might be better if you have a larger 48V battery. You only need the one inverter as it outputs two 120V legs of phased AC so you can feed it into a standard sub panel, and you can feed your PV right into it so it will not need an additional MPPT controller for a 5KW or smaller array. I prefer the low frequency inverters vs the high frequency inverters for a number of reasons. This unit will also remote start and stop the Honda generator I have.

 

[Cancerfood]

New to the forum, currently working on a critical circuit UPS for the house, and plan to add PV array next year some time once it is up and running. I experience a lot of brown outs, and short term power outages - maybe 30 minutes to 30 hours from history over the last 5 years. The brownouts killed at least one television already. I will be using street power to keep the battery charged to keep everything running, and gives me plenty of time to hook up the generator to keep the batteries charged if it is going to be a longer power outage.

I ordered the low frequency Growatt 6000T, split phase, transformer unit, it might be better if you have a larger 48V battery. You only need the one inverter as it outputs two 120V legs of phased AC so you can feed it into a standard sub panel, and you can feed your PV right into it so it will not need an additional MPPT controller for a 5KW or smaller array. I prefer the low frequency inverters vs the high frequency inverters for a number of reasons. This unit will also remote start and stop the Honda generator I have.

What batteries are you connecting to the growatt and how are you going to connect the battery bms to talk to the Growatt? I am looking at the same unit but not clear about the bms piece. It states that The growatt will take a rs 45 com link to manage a battery system.