Deye Hybrid Inverter Review - Off-grid [Sunsynk, Sol-Ark]

Solar Inverters
43

So, I will check the connection with Safeguard again. It can also be because of the type of safeguard. All the rest are fine.

45

I assume with UPS you mean the ac power provided on the inverters “backup LOAD” port.

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If power is not provided from grid (for example turned off for maintenance), the inverter should (must) not generate and potentially inject power to the grid.

Afaik the backup power provided on the load port is there instantly and without a noticeable delay for consumers

47

do you know if its possible to have this scenario with this inverter, my gen port will have another inverter with production, but the same AC wire have the pool pump running from it, can the gen port produce energy to some devices such as a pool pump (± 800w) and also act as microinverter?

48

@nunoacif, No, never connect any loads directly to the generator port.

49

but if i connect the other interver to the gen port, isn’t that a load itself?

50

A solar inverter is not a load; it’s a generation source that needs an AC voltage to function, so the Generator input will not work.

53

Hi Svarky.

Is this Deye good to accept V2l through gen port without tripping from BYD?
I am in Australia.

Thanks

54

@Thanwintun, I have not personally tested a Deye inverter with V2L connected to the generator input, but I have heard from other users that this works with KIA EVs. I don’t see why it would not work with BYD.

I was planning to test this myself in a few week’s time during the installation of another Deye inverter (for an off-grid customer)

56

Thanks for the info!

57

Deye Inverter Monitoring problems

I found the standard Solarman app, which is used with the Deye branded inverters, to be extremely unreliable and difficult to use. I have had nothing but problems connecting the inverter to any of the SolarMan Apps (I think there are 4 versions).

Fortunately, I discovered the Solar Assistant platform, which is a great alternative and works perfectly; plus, it provides detailed graphs of every aspect of the system, including loads, MPPT voltage and current, input power voltage and frequency (generator).
More importantly, it enables seamless remote control and configuration of all the settings. I’ve started another thread here with more details about the Solar Assistant App.

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58

You mention your house is completely off grid, does that mean all your switchboard is connected to the “LOAD” port ie. the backup load?

If this inverter was used for an on-grid connection and the grid went off, only the loads connected to LOAD is supplied?

I assume this would also mean that mean at the switchboard you would need to separate the backup loads onto a different bus from the house loads ?

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59

Thanks for the detailed review and follow responses, they have been very useful.

However, I will really like to know what the noise level is. Can it be used indoors - like close to an office desk?

60

Hello. I am considering to buy A Deye hybrid 5kW converter with split phase AC (living in Jamaica). I was using a Schneider Conext, which has “AC assist”, meaning that current is drawn from batteries as much as the battery charge allows, and above that mixed with grid. That is what I want. Disadvantage is that Schneider takes the first 2A (that is 480W) from the grid, presumably because of safety regulations, preventing unwanted injection into the grid. This is not acceptable because small users such as fridges will be on the grid all day. So I have added an Arduino microprocessor to switch the grid on and off depending on the load, but I find this not a desirable solution. How does this work with Deye, I read about “grid shaving”, but I did not get the details of it. Will the inverter take all the energy from the batteries when the batteries have enough charge? Or is there always grip power in the mix?

61

Yes, this will work no problem. There is a function to use the battery first to set the SOC and then it starts using the grid. Also, the battery draw

However, you will want to install the grid meter (included) and also use a
“managed” battery system with CANbus closed-loop communications. Something like Pylontech or EG4 batteries.

62

Thanks Svarky!! When the the battery is at SOC lower limit, and the solar panels deliver only a part of the load energy, will the inverter then mix bat/panel with grid, so as to maintain the SOC level? And is there a minimum current to draw from the grid?