Easun SMG II 5,6KP vs SMX II S,6KW?

[Adrian R]

Does anyone know the difference between these 2 models of Easun hybrid inverter?
SMG II 5,6 KP

SMX II 5,6KW

They seem to be quite similar on the specs sheet.

Or maybe the difference compared to other Easun models? SML, SV, etc ...
Thank you

 

[Sleeper85]

Hi Adrian,

I'm just comparing these two models ?

EAsun SMG II 5.6kW would be based on a "Sumry" board
EAsun SMX II 5.6kW corresponds to the model "SRNE HF4850S80-H" see the links below.

5000W 5kva Solar Inverter High Voltage HF4850S80-H - SRNE Solar

Max.Voc：500V；Rated input voltage：220/230V HF Series is new hybrid solar charge inverter, which integrates PV charge &Grid(Generator) charge with AC sine wave output. Adopting DPS control algorithm, getting higher response speed, higher reliability and higher industrial standard.

www.srnesolar.com

I own an EAsun SMX and I have a friend who has the EAsun SMG.

The boards are different, the protocol to connect it with Home Assistant or Solar Assistant is different.

EAsun SMX board



EAsun SMG board



The iPower application on Windows works with the EAsun SMX.




Solar Assistant and EAsun model

Connecting a EASUN inverter

How to connect a EASUN inverter in SolarAssistant.

solar-assistant.io

 

[Adrian R]

Thank you very much! In terms of performance/ idle consumption/ fans working non stop on SMG 2, i don't know if they ever stop on SMX, what can you tell me?

 

[Sleeper85]

With SMX the fans seem to run gradually based on the inverter load percentage. When there is no consumption it does not work. With SMG they work all the time and therefore the temperature remains lower in SMG.

Here are the consumptions that I measured with SMX 5.6kW :

The yellow column represents the consumption of the inverter at different load level and is equal to the BMS - Wattmeter power.



Edited : 17/01/2023 - JK BMS measurement is not accurate for currents <= 1A. Below is the corrected consumption.


I don't have much experience with this inverter yet.
Probably you can find better but more expensive too.

 

[Adrian R]

Good to know. Thank you, I will be in touch. Have a great day!

 

[Sleeper85]

I edited my message concerning the no-load consumption of the EAsun SMX 5.6kW inverter.

JK BMS measurement is not accurate for currents <= 1A.

 

[Adrian R]

Thank you! How about Mppt performance with the solar panels on the SMX and the SMG?

 

[Sleeper85]

Concerning SMX I don't have much experience yet to talk about it but as the weather isn't very nice where I live and the PVs are very badly oriented for the winter.

In low light, the MPPT tracker continuously tracks the voltage range from Voc max to 90V.

I think this behavior would be improved with 2 strings of 4 panels in parallel but it is not possible as the PV input is max 22A.

It is a string of 8 Jinko panels of 415WC.

• Voc max 301.84V
• Max Imp 13.17A

I ask my friends about the behavior of SMG.

 

[Adrian R]

Thank you. Very nice graphs, how do you get them?

 

[Sleeper85]

My EAsun SMX is connected to Solar Assistant ?

 

[Sleeper85]

Regarding the behavior of my SCC MPPT you will find very interesting information on this topic.

Winter production and MPPT behavior at low light

Hello, I have already posted about the behavior of my MPPT controller but a member thinks that my production is abnormal and suggested that I create a new topic. My panels are oriented to the east on a roof with a slight slope of 15°, therefore on the blue line of the diagram below. To the...

diysolarforum.com

 

[Adrian R]

Thank you!
My SMG 2 is not good at all at charging during cloudy days. Same string on a Power One Aurora on grid inverter can produce 100 watt or more and SMG 2 doesn't do anything

 

[bishnoi]

With SMX the fans seem to run gradually based on the inverter load percentage. When there is no consumption it does not work. With SMG they work all the time and therefore the temperature remains lower in SMG.

hi, is it possible to stop the bad fans on SMG ?

 

[Adrian R]

I don't think so

 

[bishnoi]

thank you, I will try to cut them with 40º temp switch
and hope no fault code 1...
bonne année !

 

[Adrian R]

Please let me know if you are successful with that. I am thinking of doing the same. Thank you!

 

[Alex1]

Anyone tried to stop smg2 fans with temp. S
switch?

 

[Adrian R]

Me ... Not yet. On the other hand I am quite disappointed with the Mppt performance of SMG II. Today I was getting only about 124 watt from a string of 400 vdc and about 2500-3000 wp, while same string delivered 300 watt on a growatt min 6000 tl x on grid inverter!

 

[Alex1]

I dont know, i am new at this, dont have other inverter to test same string. Today was cloudy with little snow, no visible sun. when its rain white clouds i get most 80wp, for 3.6kw PV, but i have 20m of cables one way 6mm2 to inverter 11A max current for my strings of panels.

 

[mirekcafa]

Have a nice day, everybody,
I have an Easun SMXII 5.6 KW. After replacing the motherboard, the output to the appliances shows only 1/3 of the actual power consumption. In inverter 1/3 amp in monitoring 1/3 Wh and amp. The technician says it's a fault of the CT1 or CT2 components that are on the board. I have these components on my old board and was wondering if I should replace them. I'm afraid to interfere so would like advice if this is really the cause of the problem.

Translated with DeepL