Scorp007

30 Degrees Celsius ambient Solis S6 6KW Pro Tier 1 Inverter IGBT Core temp Historical Data

I did a Heavy load test yesterday ran the inverter at 4.8 to 4.9 KW load for 2 hours ambient temp was 27 degrees peak temp reached 59.8 Degrees note how fast the temp stabilised after the heavy sustained load In my opinion this is excellent heat management and performance the inverter did not derate during this test and generated no error codes or warnings it simply handled the load and managed the heat generated.

Some real world data.
By Contrast the S6 8KW Pro Tier 1 Inverter with active cooling same conditions as the 6KW unit shows the difference the active cooling makes vs passive note the temperature shown is IGBT Core temp typically 20 to 25 degrees Celsius higher than ambient internal temperatures.

I have a Sun-5k-sg01lp1EU which I have never heard the fan but under certain conditions a electronic buzz is heard but it is just audible. At the moment under low load it is quit at 29dB right next to the inverter. 4m away my fridge is running at 33dB.

I have a Sun-5k-sg01lp1EU which I have never heard the fan but under certain conditions a electronic buzz is heard but it is just audible. At the moment under low load it is quit at 29dB right next to the inverter. 4m away my fridge is running at 33dB.

This is a easy add on. As the Solis 4G mini is such a reliable inverter I would look at sites selling them 2nd hand. Price will be around R3000. Start up voltage is around 120V iirc. No need for a CT to prevent export as the Sunsynk will control the export.

Hello Everyone, I am pulling this review out of the archives for good reason. It is now almost 3 years later, and my long-term experience with the Solis S6 Pro inverters has been nothing but a pleasure.
These machines are incredibly reliable and robust in every aspect. I have run my full household completely off-grid on these inverters. Previously I used a Sunsynk that simply could not handle the punishment in a true off-grid scenario.
On a single 6kW unit I have successfully run:
Electric lawnmowers, chainsaws, angle grinders
Oil bath & inverter welders
Borehole pumps, drills, impact hammer drills, circulation pumps
Base load of 6 fridges/freezers, air fryer, microwave, electric geyser 2kW element, CCTV 8 cameras, computers, TV, sound system, external LED lights
12,000 BTU aircon (winter and summer)
I regularly pushed the inverter to its limits and used the 200% surge capacity for short bursts. All of this with zero noise from the inverter.
Other successful tests:
Generator integration Grid and Aux port works flawlessly and allows precise throttling of generator power draw.
2kW wind turbine on MPPT (constant voltage mode) and AC-coupled on Aux/backup port. Solis even created a special firmware to improve charging range. Their strong grid-forming capability makes them compatible with sensitive wind grid-tied inverters where others fail.
Parallel operation: Added a second 6kW unit one dedicated to PV, one to wind.
One unit was damaged during extreme experimentation Solis promptly replaced it under warranty. Their after-sales, technical support, and swap-out policy is second to none.
The Micro-Grid capability is absolutely amazing.
Internal transfer losses are almost zero.
I am deep into the experiment right now and will soon be adding a Solis 4.6kW grid-tied inverter into the micro-grid for further testing of TOU functions, charge and discharge rates, etc.
Their new Energy Management System (EMS) soon to be fully AI-powered makes perfect sense for grid-connected systems, from residential all the way to commercial solutions. It lets users set up Peak, Normal, and Off-Peak rates linked to intelligent charge and discharge schedules.
This maximises financial returns by optimising when to charge from the grid or solar, when to discharge to the loads, and when to export.
The upcoming self-learning AI mode will take it even further by automatically predicting solar generation, learning your actual consumption patterns, and making real-time decisions with minimal user input a big step forward for effortless optimisation. Up to this point I can only applaud Solis for a true Tier 1 product in every aspect.
The ability to create a micro-grid with their Hybrid inverters opens up huge potential for users who have multiple houses or buildings on the same property, with distributed batteries, inverters, PV, generator, or wind power systems all running seamlessly together on the same micro-grid.
Firmware upgrades are mostly for new features and battery compatibility.
The system has been so stable I went over a year without updates at times true “install and forget” performance in normal use.
I am now running an 8kW Solis Pro as the grid-forming master for my 6kW Solis Pro using CT clamp from the 6kW on the 8kW backup output. Each has its own battery bank and power source.
I am also planning a formal review of the Solis 5kW Off-Grid models soon.
Strong note: these are currently the only off-grid inverters that are NRS certified. We will be asking Solis for some units to give away.
Highly recommended!

Can I just add we find PCBs made to order where they at times make the tracks thinner and that affects us as we measure a volt drop to simulate the current drawn by devices. This is against our spec. Anything to lower their cost. Not fun to have to change SMD resistors due to this problem.
Aluminium is half the price of copper and we know how much cables are used world wide. $$$$ at stake.

Interesting @Scorp007. I’ve never seen a cable with copper coating and Al internals. Seems like a lot of work to sell a cable cheaper.
This article has some good information on tinned copper if interested.
https://www.crutchfield.com/S-JaPyDhdZ0JB/learn/what-is-tinned-copper-wire.html

He good news is @TaliaB has been discharge and he is busy recharging hopefully to 100% SOC on a family farm.
His oxygen levels still need to recover and could take a while.
Thanks for the support on behalf of our friend.

He good news is @TaliaB has been discharge and he is busy recharging hopefully to 100% SOC on a family farm.
His oxygen levels still need to recover and could take a while.
Thanks for the support on behalf of our friend.

Good to have AfriForum asking the right questions and based on what laws can a metro try and boost it's income - until all that can afford it moves to off grid
R2,400 fee for people with solar panels on their roofs in...
AfriForum has demanded that the Municipality of Emfuleni explain why it wants to charge residents who use rooftop solar R463 per month and a R2,400 application fee.

He good news is @TaliaB has been discharge and he is busy recharging hopefully to 100% SOC on a family farm.
His oxygen levels still need to recover and could take a while.
Thanks for the support on behalf of our friend.

Or buy another Sunsynk 8kW and give the free gift to one of us 😀😀😀😀

Good to have AfriForum asking the right questions and based on what laws can a metro try and boost it's income - until all that can afford it moves to off grid
R2,400 fee for people with solar panels on their roofs in...
AfriForum has demanded that the Municipality of Emfuleni explain why it wants to charge residents who use rooftop solar R463 per month and a R2,400 application fee.

He good news is @TaliaB has been discharge and he is busy recharging hopefully to 100% SOC on a family farm.
His oxygen levels still need to recover and could take a while.
Thanks for the support on behalf of our friend.

He good news is @TaliaB has been discharge and he is busy recharging hopefully to 100% SOC on a family farm.
His oxygen levels still need to recover and could take a while.
Thanks for the support on behalf of our friend.

I am very happy that the inverter keeps my voltage level spot on during time of use activated. Been using it for 17 months.
I am also off grid most of the time. I do switch the grid on via a timer after 4h00 just to always have some battery capacity.
I thus use as little as 100-300wh grid during the 4h to 8h30 period. Most day even in winter no grid even in this morning period. Only when thick clouds during the day like we had the last month do I switch grid on at other times but only if needed.

"I do still believe the inverter's idea of SOC and the real SOC is not always aligned, meaning any inverter setting that is based on SOC is kinda a hit and miss situation."
This is perhaps the case on most inverters as most will be using voltage and not measure energy via a shunt if comms are not used and voltage settings.
I am wondering about the statement that the Deye might not adhere to the maximum load when in island mode. I would guess the 12kW calculates the same as the 5kW. My 5kW is set to only provide 4kW load and can confirm that it has switched of about 3 times when the setting is exceeded.
My experience is not applicable to the batteries you have but see no reason why not to run in voltage mode until you got the upgrade with other batteries and going back to using comms.
I am running 4 battery banks on voltage mode and they have their own BMS for the protection/balancing features. 2 are DIY.
Use the inverter SOC only as a guidance and not if you want to say use 20-100% of the battery. My inverter will report over 50% most mornings but it does not concern me even if the real SOC is 35 or 65%.

I am very happy that the inverter keeps my voltage level spot on during time of use activated. Been using it for 17 months.
I am also off grid most of the time. I do switch the grid on via a timer after 4h00 just to always have some battery capacity.
I thus use as little as 100-300wh grid during the 4h to 8h30 period. Most day even in winter no grid even in this morning period. Only when thick clouds during the day like we had the last month do I switch grid on at other times but only if needed.

"I do still believe the inverter's idea of SOC and the real SOC is not always aligned, meaning any inverter setting that is based on SOC is kinda a hit and miss situation."
This is perhaps the case on most inverters as most will be using voltage and not measure energy via a shunt if comms are not used and voltage settings.
I am wondering about the statement that the Deye might not adhere to the maximum load when in island mode. I would guess the 12kW calculates the same as the 5kW. My 5kW is set to only provide 4kW load and can confirm that it has switched of about 3 times when the setting is exceeded.
My experience is not applicable to the batteries you have but see no reason why not to run in voltage mode until you got the upgrade with other batteries and going back to using comms.
I am running 4 battery banks on voltage mode and they have their own BMS for the protection/balancing features. 2 are DIY.
Use the inverter SOC only as a guidance and not if you want to say use 20-100% of the battery. My inverter will report over 50% most mornings but it does not concern me even if the real SOC is 35 or 65%.

If you have permanent WiFi at home the easy way if allowed would be to fit a smart MCB at the geyser and you can program your on/off cycles and also via the APP on your phone override it at any time. These units can also measure the power used by the load connected through it.

He good news is @TaliaB has been discharge and he is busy recharging hopefully to 100% SOC on a family farm.
His oxygen levels still need to recover and could take a while.
Thanks for the support on behalf of our friend.

He good news is @TaliaB has been discharge and he is busy recharging hopefully to 100% SOC on a family farm.
His oxygen levels still need to recover and could take a while.
Thanks for the support on behalf of our friend.

He good news is @TaliaB has been discharge and he is busy recharging hopefully to 100% SOC on a family farm.
His oxygen levels still need to recover and could take a while.
Thanks for the support on behalf of our friend.

He good news is @TaliaB has been discharge and he is busy recharging hopefully to 100% SOC on a family farm.
His oxygen levels still need to recover and could take a while.
Thanks for the support on behalf of our friend.

He good news is @TaliaB has been discharge and he is busy recharging hopefully to 100% SOC on a family farm.
His oxygen levels still need to recover and could take a while.
Thanks for the support on behalf of our friend.