Anyone got a Deye 10kW inverter - thoughts and experience?

[Sophon]

I have a cheap Chinese PowMr 8.2kW inverter. It runs OK most of the time, and handles 5-6kW loads fine for a short period. However, if we run constant loads of 2.5-3kW or higher for two or three hours, then the inverter at some point overheats resulting in it derating or shutting down.

 

I think it's time for a new, higher quality inverter. I was thinking about the Deye SUN-10K-SG02LP1-EU-AM3 inverter (I don't want to run two 5K inverters in parallel). Our absolute maximum load (when shower heater plus some other loads are running) is 6kW, and the maximum constant loads for extended time is around 3.5kW (when charging the EV). I would expect the Deye inverter to be able to handle that without any problems and without overheating. I can get this inverter on Lazada/Shopee for just under 70k baht.

 

Before buying, however, I would like to hear the experiences of other board members who have Deye inverters. Have any of you had any problems with overheating/derating when running large'ish loads? 

Also, I have two battery packs with different inverters connected in parallel without communication between inverter and batteries. That works well for me. Can the Deye inverters support batteries without establishing communication between inverter and batteries, i.e. you just input charging voltage, at what voltage to switch over to grid etc.

 

Thanks in advance for your input.

 

[Crossy]

I believe these units are active fan cooled rather than the convection cooled 5kW units.

 

We added fans to our 5k units due to them running hotter than I really like when working hard although they never de-rated or shut down on overheat. They are also "outdoors" (under the car port) so ambient is pretty high.

 

If you're not going to take it over 6kW most of the time then I suggest the 10k unit will do the job just fine.

 

@Sophon I've split these posts off into their own thread for more directed responses.

 

 

 

[BritManToo]

My PowMr has 2x fans on it.

Are your fans still working?

Have you tried adding a 12v computer case fan on the top?

 

Like @Crossy I add case fans to anything that gets a bit hot.

One of my GTIs gets a bit hot (1000w gti + 580w panel), so a 12v case fan permanently on.

(I have a 5k5 PowMr providing 80% and 2x 1000w gtis providing 30% for my home)

 

[ExpatOilWorker]

2 hours ago, Sophon said:

Deye SUN-10K-SG02LP1-EU-AM3 inverter (I don't want to run two 5K inverters in parallel). Our absolute maximum load (when shower heater plus some other loads are running) is 6kW, and the maximum constant loads for extended time is around 3.5kW (when charging the EV). I would expect the Deye inverter to be able to handle that without any problems and without overheating. I can get this inverter on Lazada/Shopee for just under 70k baht.

You and me are looking at the exact same unit. 

3 MPPT trackers and should handle your load with ease.

 

[Sophon]

3 hours ago, BritManToo said:

My PowMr has 2x fans on it.

Are your fans still working?

Have you tried adding a 12v computer case fan on the top?

 

Like @Crossy I add case fans to anything that gets a bit hot.

One of my GTIs gets a bit hot (1000w gti + 580w panel), so a 12v case fan permanently on.

(I have a 5k5 PowMr providing 80% and 2x 1000w gtis providing 30% for my home)

 

 

Yes, the fans are still working (and quit loud too), but I have not added any extra fans. The location of my equipment is right smack dab in the middle of termite and ant territory, and since the inverter is not sealed I expect critters to take up residence inside the inverter at some point in the future, so I don't want to add extra equipment to keep it cool. I'd rather change the inverter with a better sealed unit.

 

The overheating doesn't really seem to be closely related to ambient temperature. It overheats even in the cool season if running constant high'ish loads for an extended period. And it's not consistent, sometimes it overheats and other times it doesn't running similar loads and at similar or higher temperatures.

[Sophon]

2 hours ago, ExpatOilWorker said:

You and me are looking at the exact same unit. 

3 MPPT trackers and should handle your load with ease.

 

 

Yes, I would expect this inverter to be able to handle my load, and at the same time it would give me quite a lot of flexibility should I want to add more panels in the future or change the existing ones to others with different voltage/amperage characteristics.

 

Where did you get that screen shot from, that seems like a pretty good price?

[KhunLA]

@Sophon We have an 8kW Deye hybrid inverter, and noticed it was putting out 8.81 kW one late morning.  Less than half going to batteries, a bit more to the load, and guessing we were charging the BEV, besides ACs on and up to temp.  Rated @ 8.8 output

 

Must have peeked at the inverter before unplugging the car, to take dog to park, as see I apparently plugged the car back in afterward.  Sunny day as hitting 8 ish kWh a few times.

 

 

graph for 13 May 

 

 

Here's a long use & abuse day ... 50kWh.   We don't export, so will only produce/provide what's needed.  At most, the car will draw 2.3kW, using slow charger, so the rest is recharging batteries, and load to house.

 

 

Not bad, as 5 May, and pollution was probably high, even appears to have been sunny out, due to steady production curve, till not needed.

 

1000 kWh month, and we were even out of town for 2 day.

 

 

https://aseannow.com/topic/1268214-solar-8kw-hybrid-inverter-w10kwh-upgraded-to-20kwh-in-sept-2022-essbattery-not-diy/

 

 

We've easily had 40-50kWh days, as abuse the ACs pretty good, along with charging the car, and I bake quite a bit.   Had a few (3) 1000 kWh months.

[Sophon]

9 minutes ago, KhunLA said:

@Sophon We have an 8kW Deye hybrid inverter, and noticed it was putting out 8.81 kW one late morning.  Less than half going to batteries, a bit more to the load, and guessing we were charging the BEV, besides ACs on and up to temp.  Rated @ 8.8 output

 

Must have peeked at the inverter before unplugging the car, to take dog to park, as see I apparently plugged the car back in afterward.  Sunny day as hitting 8 ish kWh a few times.

 

 

graph for 13 May 

 

 

Here's a long use & abuse day ... 50kWh.   We don't export, so will only produce/provide what's needed.  At most, the car will draw 2.3kW, using slow charger, so the rest is recharging batteries, and load to house.

 

 

 

1000 kWh month, and we were even out of town for 2 day.

 

 

https://aseannow.com/topic/1268214-solar-8kw-hybrid-inverter-w10kwh-upgraded-to-20kwh-in-sept-2022-essbattery-not-diy/

 

 

We've easily had 40-50kWh days, as abuse the ACs pretty good, along with charging the car, and I bake quite a bit.   Had a few (3) 1000 kWh months.

 

So if I am reading your second graph correctly, you were pulling a load of 4-6 kW consistently for about six hours without problems, correct?

 

My existing inverter doesn't seem to have problems when charging the batteries, it's when a high house load require the inverter to convert DC from the panels or battery to AC for the house. What would you guess is the highest consistent load your inverter has to deal with, for instance when charging your EV? (I also use a granny charger).

[ExpatOilWorker]

1 hour ago, Sophon said:

 

Yes, I would expect this inverter to be able to handle my load, and at the same time it would give me quite a lot of flexibility should I want to add more panels in the future or change the existing ones to others with different voltage/amperage characteristics.

 

Where did you get that screen shot from, that seems like a pretty good price?

Shopee, but I just checked, the vendor is sold out.

Check with @UWEB, he is running 2 x 10 kW DEYE inverters, although 3-phase, and did charge his EV at 8 kW for 12 hours straight.

Do you plan to use smart load?

[ExpatOilWorker]

1 hour ago, Sophon said:

 

Yes, I would expect this inverter to be able to handle my load, and at the same time it would give me quite a lot of flexibility should I want to add more panels in the future or change the existing ones to others with different voltage/amperage characteristics.

 

Where did you get that screen shot from, that seems like a pretty good price?

61,500 baht is the best I can find now. Same as the distributor price.

 

[KhunLA]

31 minutes ago, Sophon said:

 

So if I am reading your second graph correctly, you were pulling a load of 4-6 kW consistently for about six hours without problems, correct?

 

My existing inverter doesn't seem to have problems when charging the batteries, it's when a high house load require the inverter to convert DC from the panels or battery to AC for the house. What would you guess is the highest consistent load your inverter has to deal with, for instance when charging your EV? (I also use a granny charger).

There's days, sometimes 2 in row, if coming back from an out & about and only 20% left in the car, it will be charging for 2 days.  March, April & May can be brutally hot, and if I'm in a baking mood, its easy to have a 50kWh day.  Oven is 2+kW, ACs (13 & 24BTUs) on high, car 2.3kW.   Could easily draw 6+kWh for 6 hrs, so 36+kWh.  Hot water heaters are only 3.5kW.  Rainy season, we'll run the water pump, as water storage tanks are full, so won't use city water.

 

Overnight, usually not more than 8kWh from batteries used, so they are recharged, usually from 0730 hrs onward.  Depending what else is drawing power, usually topped up before noon, if sun out.  

 

If get 6+kWh for 6 hrs = 36 + 8 for the batteries, so an easy 44+kWh without much trying.  Doesn't count the other 4 ish hours, as usually about a 10 hr / 14 hr split, production vs non production hours.

[KhunLA]

Here's our 3 highest use months, and really didn't need to go over 35kWh most days.  Near 50kWh days are probably charging the car and or MB.

 

 

 

[Sophon]

1 hour ago, ExpatOilWorker said:

Shopee, but I just checked, the vendor is sold out.

Check with @UWEB, he is running 2 x 10 kW DEYE inverters, although 3-phase, and did charge his EV at 8 kW for 12 hours straight.

Do you plan to use smart load?

 

No, I have no plans to run any smart functions.