6kw 48v system. which Growatt set up to get?

[WilliamC]

Question for the experts. I am looking at a 6kw 48v system.
Look at the following two systems.

this deal is a (x2) double unit. $1398

Growatt 48V 6kW Split Phase 120V/240V Package 2 x 4500W MPPT (2 x SPF 3000TL)​

this deal is a single unit. $1323

Growatt 48V 6000T 6kW Split Phase 120V/240V output (50A at 120V ,25A at 240V)​

any reason to get one over the other?

 

[schmism]

the single 6kw unit is a Low frequency unit (has a big transformer) which handle startup surge much better.

Dual units you have some redundancy so if one unit goes down you can still run 120v loads. You also split the amp draw in 2 so you can run smaller wire to 2 units vs big single cable to the one 6kw unit. Also gives you 2 SCC that can track 2 arrays better. In case half of the PV gets shade at some time of the day vs the other half.

 

[markver]

Question for the experts. I am looking at a 6kw 48v system.
Look at the following two systems.

this deal is a (x2) double unit. $1398

Growatt 48V 6kW Split Phase 120V/240V Package 2 x 4500W MPPT (2 x SPF 3000TL)​

this deal is a single unit. $1323

Growatt 48V 6000T 6kW Split Phase 120V/240V output (50A at 120V ,25A at 240V)​

any reason to get one over the other?

I have the same question. Just curious if you made a purchase yet?

 

[Joe BoyKey]

This is the 6kw, which i own and Love, Joe.

It is HEAVY - 100 lbs, fan a little loud during heavy load, but gets her done.

 

[JohnMS]

Current off-grid system:
inverter - Growatt SPF 6000T DVM 120/240Vac split phase
solar panels - (9) Q CELL Q.PLUS L-G4.2 340 (panels 3S3P)
battery bank - (24) INTERSTATE GC2-ECL-UTL 6V wet cell (8S3P 48V)

Growatt same as Sigineer pdf attached, best i can tell. Owners manual for Sigineer is more complete than Growatt manual. All is working well thus far. Supplying power to 40'x40' shop + 30'x14' living area. Main load is 12000 BTU pioneer mini-split. Solar panels temporarily installed and will be moved to rack mount system away from barn when ground dries.

 

[Joe BoyKey]

Awesome: Growatt SPF-6000T-dvm, 48v 500ah Batteries, 4120w Panels + MakeSkyBlut V119 48v 60a charge/controller

 

[Maast]

Awesome: Growatt SPF-6000T-dvm, 48v 500ah Batteries, 4120w Panels + MakeSkyBlut V119 48v 60a charge/controller

Have you measured the idle loss on your inverter? I'm always interested in what a inverter burns while its just sitting there with no load but not on standby.
Thanks!

 

[schmism]

In grid bypass the units were drawing 73w combined from the battery (says the shunt)

 

[Joe BoyKey]

Have you measured the idle loss on your inverter? I'm always interested in what a inverter burns while its just sitting there with no load but not on standby.
Thanks!

No always have a load running my Garage - Freezer, Refrigerator, PC, 2 monitors lights, ect..

 

[Maast]

In grid bypass the units were drawing 73w combined from the battery (says the shunt)

Those look like the doubled 3kw package, just over 1% of capacity in idle isnt bad at all! I'm curious about the 6kw in one unit draw. I'm wondering if it'd be more efficient idle-wise to do the double package or just use the single unit.

I've got a upcoming WAY off grid project coming up and every watt counts as it won't have much roof space and there'll be really bad shading issues.

 

[Eerskie]

Rudely bumping this thread - I would also be very interested to hear what the idle draw on the 6000T is ...... appreciate any input!!

 

[Joe BoyKey]

.84 amps sais my battery monitor and Vue gen1 energy monitor, joe.

 

[Maast]

That'd be about 63 watts then assuming a 3.3v/cell. A little under 1% of capacity. Not bad!

 

[Kouros]

the single 6kw unit is a Low frequency unit (has a big transformer) which handle startup surge much better.

Dual units you have some redundancy so if one unit goes down you can still run 120v loads. You also split the amp draw in 2 so you can run smaller wire to 2 units vs big single cable to the one 6kw unit. Also gives you 2 SCC that can track 2 arrays better. In case half of the PV gets shade at some time of the day vs the other half.

I have the growatt 6K with the 18k spike low frequency. i am looking for help in the asheville area-with the build if y’all know of a company.

 

[Wits' End]

Glad I searched, before posting, I have this ready to paste:

Growatt 48V 6kW Split Phase 120V/240V Package 2 x 4500W MPPT (2 x SPF 3000TL)

Growatt 48V 6000T 6kW MPV (250V Solar Input) Split Phase 120V/240V output (50A at 120V ,25A at 240V)

My main question was ease of install, vs built-in back-up. I've decided to go with the 6k single unit, for the LF inverter. Once again I asked the wrong questions.
Thank You!

 

[MPRanger]

This is the 6kw, which i own and Love, Joe.

It is HEAVY - 100 lbs, fan a little loud during heavy load, but gets her done.

What happened to the video?

 

[Joe BoyKey]

It's been awhile, think it was this one, Joe.

copy and paste-https://www.youtube.com/watch?v=1cAh492Kjt0

 

[MPRanger]

Thank you for the working link, I was unable to find an equipment description in the details but I see two inverters in the background as well as a power source on the floor possibly. Is this a Growatt 6048? What is the red unit next to the growatt? I am waiting on the LVX6548 presently, waiting with optimism that someday my shop will come in. LOL

 

[Joe BoyKey]

Thank you for the working link, I was unable to find an equipment description in the details but I see two inverters in the background as well as a power source on

the floor possibly. Is this a Growatt 6048? What is the red unit next to the growatt? I am waiting on the LVX6548 presently, waiting with optimism that someday

@MPRanger On the wall now, will be moving to cabinet pictured below, powering my entire garage, Growatt SPF-600T-DVM low freq, split phase, Joe.

 

[Johnpaul2275]

Hello All,

I started a new thread earlier today with basically the same introduction and questions... but then I found this thread concerning the
Growatt 6k inverter. I am glad I did. The video here on this thread is encouraging.

I want to set up an emergency solar back up system using lithium batteries, off grid inverter/inverters along with a solar array.
The system would power essential household appliances such as, refrigerator, freezer, toaster oven, TV, radio, computer, and
several lights during a 3 or 4 day black out.

The Big Issue for me is the Well. I have a 400' deep well using a 1 1/2 hp pump 220 volt AC. I have been told it will draw
between 30 to 40 amps on start up. I will get the specifics if you guys are interested.

At the moment I have a 9k Wen Generator using propane. It drives the house fairly well but i'm concerned about generator noise.
At half load (approx 4k) it produces 5% distortion into the main breaker box. I've tried running the well pump in conjunction with the
essential appliances and the well pump spits and sputters while the generator revs-up to max load. At this point I shut down the well
immediately. A (Clean) pure sign wave inverter is what I really need and one that can handle the surge loads demanded by a deep well pump.

I was thinking about installing:

2 Growatt 6k 48v off grid low frequency split phase inverters. One would be used strictly for 220 like the deep well and possibly hot water heater;
while the other would be used primarily for 110 household needs. The idea of having 2 inverters is redundancy or back up instead of a single 12k unit. Needless to say, if one goes out, I still have a working unit for essential needs. I like the idea of low frequency inverters for surge power and the price per unit is more than reasonable considering the functionality these inverters provide.

Note: Naturally I would consult a licensed electrician to check my work and to hook up to the main breaker box.

Question: Do you think I am on the right track?

Thanks all