Hi, nice list of do's and don't of a Sunsynk Inverter... Though, how do you know if you have bad communication cables? We had a parallel problem in our 2 units - 8 kW Deye Hybrid Inverters with 2 units - 5 kWh GSL LiFePo4 Batteries. We connected the 2 Inverters via CAN port with 00 Lithium Mode. Then we connected the "Master" Inverter to the Master Batter, the Slave Inverter to the Slave Battery. Then we connected the Batteries via RS485 B. They work each one independently but they don't work when paralleled. What could possibly be the problem?
Hi Keith I in the process off installing Sunsynk Sun 5K Hybrid Inverter (With wifi and CT) .If I have reached my 5 k and I require another 2 k .Does it fetch the 2 k from the grid?
Hi there, do you have a document on this advice and optimal settings?. It looks like the Sunsynk isn't as plug-n-play as others and needs configuring more than other brand inverters. Thanks
Keith Can you make the inverter recognise a second solar generation, not connected directly to the unit. Ie a garage pumping 2kw into the mains. While the unit is connected to 4 kw from the main house?
Hi Heith I have just done a 5kw installation myself. No batteries yet. It seems to be an overachiever so far and I am highly impressed. Question: The last 3 nights we had serious lightning storms in our area. It seems that the system switches off and does not come back on. In the morning everything seems fine, but in the top left-hand corner, it says OFF. No power is generated even though the sun is shining. I then do a shutdown procedure and a startup procedure as per the manual. The system then comes back ON and performs normally. There are no fault codes registered for these events. Is this normal ? What have I done wrong ? Could it be an installation fault or a setting fault ? I cannot think that it was designed this way. Any comment or possible solution would be appreciated.
All the panel frames are linked and properly earthed.
Another fantastic video. Great products from Sun Synk, I’m a big fan and looking forward to mine arriving soon. Choice of batteries: does this kit talk to Pylontech BMS?
Does SUNSYNK offer a option where one can install a 2nd/separate LCD display, say in the kitchen, while the inverter and batteries are in the garage? I would like a 2nd LCD screen and NOT use the App on my cellphone. Please will someone answer my sincere question. Thanking you in advance.
Hi Keith, I have a Sunsynk 3.6kW AC 7kWp inverter with a pylontech us5000 and no communication I'm using the supplied bms cable that came with the inverter and can't get any comms when trying to set it up as a lithium battery, currently have it on the AGM setting, have read that some are saying the bms cable is not correct for the pylontech battery, any help would be much appreciated, regards Tim
Hi Keith im in South Africa and install alot of victron inverters but would like to learn more about these inverters if possible can you send me a a clip of a complete setup of these inverters and how to connected it to the phone aswell Thanks alot.
Hi Keith Let me start by say I really enjoy all your videos as they are very informative. I’ve been looking at fitting solar with the final objective not to depend on the grid at all. This is due to the SA power issues and them put electrical prices up as and when they feel. Currently I have calculated that I would require around 8.5 kw system to be off grid. Due to pricing of a full system to do the job my intention was to start with one 5kw inverter with its additional requirements and the n add another later. The only down side is once I split my DB for the essential loads I only have a average of around 500w requirement. The inverter from what I understand does not cross feed the PV power to the heavy loads when there is abundant watt available.this means that the 5 k inverter only takes care of the UPS load and Im stuck with the grid suppling the balance ( let’s say the total house requirement is 2000 watts 400 would be cover on the light side by the inverter and 1600 watts I will have to pay issskom for. But it’s 12:00 noon and have 4800 watts coming off the roof. This is the only thing that is making me look into an Alturnative inverter option that cover both Heavy and the light side of the inverter when there is sufficient power from panel or batteries to do so. Or do you have another way to sort this problem out. Please advice as other than this down fall your inverter gets a 💯 % thumbs up from me. Thanks
@@sunsynk Hi Kieth!! Please can you comment on the question asked?? Question: The only downside is once I split my DB for the essential loads I only have an average of around 500w requirement. The inverter from what I understand does not crossfeed the PV power to the heavy loads when there is abundant watt available. this means that the 5 k inverter only takes care of the UPS load and I'm stuck with the grid supplying the balance ( let’s say the total house requirement is 2000 watts 400 would be covered on the light side by the inverter and 1600 watts I will have to pay issskom for. But it’s 12:00 noon and has 4800 watts coming off the roof. This is the only thing that is making me look into an Alternative inverter option that covers both the Heavy and the light side of the inverter when there is sufficient power from the panel or batteries to do so.
@Ronald Wiseman, both my Sunsynk inverters handily sends all the available PV to the load, and only starts suplementing with Grid power if the PV is insufficient to carry the load. Perhaps look at your settings, I suspect there is an issue with the installation or with the settings of the inverter which might easily be corrected at no additional expense
I'd say that the software is definitely different, but I don't know how different the inverters are, hardware-wise. On the surface, they look the same (even the internal connections seem to be the same).
Hi Keith, Must the grounding on the inverter case be to separate grounding rods or can I join it to the common ground in the distribution board to the house? Is this the same for the grounding on the lithium battery casing?
I'd say that it depends on the regulations in your country. Here in Spain, the code doesn't actually get into such detail regarding solar installation grounding, which causes quite a lot of confusion, even among professionals. However, if you persist and keep digging for information, you'll hopefully find some answers. In my case, I found an official code interpretation note published by the ministry of industry, which applied to solar installation grounding (albeit indirectly). According to this note, all PEs must be connected to the building's own grounding rod (which is separate from the grid, following the TT earthing system). But this only applies if the solar installation is integrated in the building/house. If the solar system isn't integrated in the building/house, then an additional grounding rod is installed next to the solar system's location, where all PEs from the solar system will be connected. Now, depending on the distance between the house and the location where the solar system is installed, this separate grounding rod might need to be bonded with the building's main grounding rod. If the distance is below 100-200 meters or so (this depends on the characteristics of the soil), then both grounding rods need to be bonded. If the distance is above 200 meters, then the grounding rods can remain independent.
Keith, please explain how exactly to lengthen the CT wire, if the inverter system is far from the mains supply. I have tried a few times where the inverter just does not pick up the CT.
An inverter is non linear, I was concerned they would trip an rcd as non linear loads do . I remember a host of inverter aircons on a line also trip an RCD.
Hi, I have a 12kw 3 phase inverter. When grid fails the potential difference between neutral and earth on the backup rises to over 100VAC. I would like to fit a relay to bridge neutral and earth during grid failure. If I connect the relay to grid power, the problem is that when grid returns, the inverter has not yet switched the incoming grid internally as it waits for the grid to be stable. I measured terminals 5 and 6 and no voltage on those terminals when grid is on or when grid fails. I selected Signal Island Mode and still nothing. Any setting that I may be missing?
Hi Keith, can you please explain the Passthrough current on the inverters? In the manuals they indicate the amps but we find that the inverters still trip out af the Max Watt's. On the Victron inverters they have pass through current that runs through the inverter as long as grid is active but with the Sunsynk its limited to max Watts of the inverter. Thank you
Have to say your call centre support is a disgrace. Phoned Liverpool today and was put through to South Africa, could barely understand what was being said and the guy on the phone didn’t seem to know much and was having a discussion with someone else in the background - not impressed at all. Your online instructions are entirely aimed at installers and are very confusing for end users. You need to sort this out!
If the generator connected on the grid side with a CT. How does the inverter distinguish between power from the generator (it doesn't export power) and power from the grid (export is allowed).
Hi, please can you clarify something for me, I am looking to install a 8KWh Sunsynk Inverter with two 5KWh lithium batteries, an electrician told me that this will give the inverter problems in that it will try to draw more current than the batteries can supply and that I should install 10KWh batteries, any advice would be appreciated, thanks
A good rule of thumb is that lithium batteries can at best only provide 50% of their capacity as continuous discharge. This means your combined 10kWh batteries can only supply 5000W continuously. With that said, unless you actually require 8000W of load capacity while the grid is offline, I see no reason why your 2 5kWh batteries wouldn't be enough to handle normal household usage comfortably
If Sunsynk software has the same basic settings as Deye's (and it looks like it does), you'll be able to limit max battery charge/discharge current to the number of amps that you please (within reason). As for the recommended max battery charge/discharge current, that'll depend on manufacturer recommendations and type of battery. The rule of thumb for lithium is 50% of battery capacity (Ah), so if you have a capacity of 200Ah, it should be ok to set a max c/d current of 100A. Pylontech US5000 is supposed to have a recommended c/d current of 50-75A (with a max of 100A). In my case, I bought a 5kW Deye battery, the supplier's tech department is telling me that I can set max c/d current to 100A if I want to (even though I only have a single 100Ah battery), since the battery's BMS is smart enough to reduce c/d current to safe levels when needed. We rarely need 2-3+kW when the battery is discharging (during the evening-night), so limiting c/d current to 50-75A (~2500-4000kW) isn't a problem for us.
i have a 5kva sunsynk inverter and at night it only charges the battery and continues to use grid power . hiow do i make it use the battery at night and not grid energy
Use the timer on the System Mode screen. Set the SOC you wish to discharge the battery to, and the inverter will use the battery until it reaches your set SOC before using grid power. If you have PV panels, I would also suggest that you disable Battery Grid Charging from the Battery screen, unless you go through an extended period of overcast weather where the PV power is just not enough to charge your battery fully during the day
Hi Keith could you email me please I wanna invest in a system for my home in Cape town Northern suburbs.....reasons is cause of eishkom and price of electricity.....I'm using roughly 660kw 700kw a month. And I obviously don't wanna get ripped off. Kind regards Kevin.
Keith, you will never bore us. Even if I learn only one thing with each video, it's a winner.
Do a demonstration of how and where to install the CT coil plz
Hi, nice list of do's and don't of a Sunsynk Inverter...
Though, how do you know if you have bad communication cables?
We had a parallel problem in our 2 units - 8 kW Deye Hybrid Inverters with 2 units - 5 kWh GSL LiFePo4 Batteries.
We connected the 2 Inverters via CAN port with 00 Lithium Mode. Then we connected the "Master" Inverter to the Master Batter, the Slave Inverter to the Slave Battery. Then we connected the Batteries via RS485 B.
They work each one independently but they don't work when paralleled.
What could possibly be the problem?
Hi Keith I in the process off installing Sunsynk Sun 5K Hybrid Inverter (With wifi and CT) .If I have reached my 5 k and I require another 2 k .Does it fetch the 2 k from the grid?
Hi there, do you have a document on this advice and optimal settings?. It looks like the Sunsynk isn't as plug-n-play as others and needs configuring more than other brand inverters. Thanks
Keith
Can you make the inverter recognise a second solar generation, not connected directly to the unit. Ie a garage pumping 2kw into the mains. While the unit is connected to 4 kw from the main house?
I'm fun of sunsynk inverters and of your videos big thanks
When you say must have CT clamp - I guess one can have a meter on Rs485 instead? Or can you extend CT clamp beyond 4m - perhaps with screened cable?
Hi Heith
I have just done a 5kw installation myself. No batteries yet. It seems to be an overachiever so far and I am highly impressed.
Question: The last 3 nights we had serious lightning storms in our area. It seems that the system switches off and does not come back on. In the morning everything seems fine, but in the top left-hand corner, it says OFF. No power is generated even though the sun is shining. I then do a shutdown procedure and a startup procedure as per the manual. The system then comes back ON and performs normally.
There are no fault codes registered for these events.
Is this normal ?
What have I done wrong ?
Could it be an installation fault or a setting fault ?
I cannot think that it was designed this way.
Any comment or possible solution would be appreciated.
All the panel frames are linked and properly earthed.
HI Keith, for the 6 units 1phase inverters connected in 3phase ( I have this setup now) are all individual connected with CT? Thanks
Another fantastic video. Great products from Sun Synk, I’m a big fan and looking forward to mine arriving soon. Choice of batteries: does this kit talk to Pylontech BMS?
Does SUNSYNK offer a option where one can install a 2nd/separate LCD display, say in the kitchen, while the inverter and batteries are in the garage? I would like a 2nd LCD screen and NOT use the App on my cellphone. Please will someone answer my sincere question. Thanking you in advance.
Can you elaborate on the best way to connect panels on both east and west sides of a roof to a dual MPPT 8KW inverter? Thanks.
My Battery is new and its not holding a charge. How do I tell/set my inverter to charge the battery
Hi Keith, I have a Sunsynk 3.6kW AC 7kWp inverter with a pylontech us5000 and no communication
I'm using the supplied bms cable that came with the inverter and can't get any comms when trying to set it up as a lithium battery, currently have it on the AGM setting, have read that some are saying the bms cable is not correct for the pylontech battery, any help would be much appreciated, regards Tim
Hi Keith im in South Africa and install alot of victron inverters but would like to learn more about these inverters if possible can you send me a a clip of a complete setup of these inverters and how to connected it to the phone aswell
Thanks alot.
Thanks Keith for awesome channel
Hi Keith
Let me start by say I really enjoy all your videos as they are very informative. I’ve been looking at fitting solar with the final objective not to depend on the grid at all. This is due to the SA power issues and them put electrical prices up as and when they feel. Currently I have calculated that I would require around 8.5 kw system to be off grid. Due to pricing of a full system to do the job my intention was to start with one 5kw inverter with its additional requirements and the n add another later.
The only down side is once I split my DB for the essential loads I only have a average of around 500w requirement. The inverter from what I understand does not cross feed the PV power to the heavy loads when there is abundant watt available.this means that the 5 k inverter only takes care of the UPS load and Im stuck with the grid suppling the balance ( let’s say the total house requirement is 2000 watts 400 would be cover on the light side by the inverter and 1600 watts I will have to pay issskom for. But it’s 12:00 noon and have 4800 watts coming off the roof. This is the only thing that is making me look into an Alturnative inverter option that cover both Heavy and the light side of the inverter when there is sufficient power from panel or batteries to do so.
Or do you have another way to sort this problem out. Please advice as other than this down fall your inverter gets a 💯 % thumbs up from me. Thanks
Thank you very much appreciated
@RonaldWiseman if you are in need of a solid installer speak to Solar Skye. Solid bunch of guys
@@sunsynk Hi Kieth!! Please can you comment on the question asked??
Question:
The only downside is once I split my DB for the essential loads I only have an average of around 500w requirement. The inverter from what I understand does not crossfeed the PV power to the heavy loads when there is abundant watt available. this means that the 5 k inverter only takes care of the UPS load and I'm stuck with the grid supplying the balance ( let’s say the total house requirement is 2000 watts 400 would be covered on the light side by the inverter and 1600 watts I will have to pay issskom for. But it’s 12:00 noon and has 4800 watts coming off the roof. This is the only thing that is making me look into an Alternative inverter option that covers both the Heavy and the light side of the inverter when there is sufficient power from the panel or batteries to do so.
@Ronald Wiseman, both my Sunsynk inverters handily sends all the available PV to the load, and only starts suplementing with Grid power if the PV is insufficient to carry the load. Perhaps look at your settings, I suspect there is an issue with the installation or with the settings of the inverter which might easily be corrected at no additional expense
Hi Keith ,
Seeing that sunsynk and deye are mother - sister companies, would you be available to give technical advice on a Deye product?
I'd say that the software is definitely different, but I don't know how different the inverters are, hardware-wise.
On the surface, they look the same (even the internal connections seem to be the same).
Can you do a video on adding the inverter and battery to existing ac fit solar system
Hi Keith, do you have any current stock of the 3.6 hybrid inverter?
Hi Keith,
Must the grounding on the inverter case be to separate grounding rods or can I join it to the common ground in the distribution board to the house? Is this the same for the grounding on the lithium battery casing?
I'd say that it depends on the regulations in your country.
Here in Spain, the code doesn't actually get into such detail regarding solar installation grounding, which causes quite a lot of confusion, even among professionals.
However, if you persist and keep digging for information, you'll hopefully find some answers.
In my case, I found an official code interpretation note published by the ministry of industry, which applied to solar installation grounding (albeit indirectly).
According to this note, all PEs must be connected to the building's own grounding rod (which is separate from the grid, following the TT earthing system).
But this only applies if the solar installation is integrated in the building/house.
If the solar system isn't integrated in the building/house, then an additional grounding rod is installed next to the solar system's location, where all PEs from the solar system will be connected.
Now, depending on the distance between the house and the location where the solar system is installed, this separate grounding rod might need to be bonded with the building's main grounding rod.
If the distance is below 100-200 meters or so (this depends on the characteristics of the soil), then both grounding rods need to be bonded.
If the distance is above 200 meters, then the grounding rods can remain independent.
Hi Keith.
Some info on using templates to make installs less complex ?
Ta
Keith, please explain how exactly to lengthen the CT wire, if the inverter system is far from the mains supply. I have tried a few times where the inverter just does not pick up the CT.
Really depends on the type of cable you're using and what other interference that could be around 10 to 20 m max
Keith I have 10*540Watt JA panels , should I put all of them in 1 mppt or should I spread them between the two.
Thula, Bheka the VOC on the rear, multiply that number X 10. That will be your total Voc. Keep it below 450V esp lana eMzansi
Hi how can I get in touch with you need urgent help. Just installed two Synsynk inverters can not get them to work in parallel.
An inverter is non linear, I was concerned they would trip an rcd as non linear loads do . I remember a host of inverter aircons on a line also trip an RCD.
Hi, I have a 12kw 3 phase inverter. When grid fails the potential difference between neutral and earth on the backup rises to over 100VAC. I would like to fit a relay to bridge neutral and earth during grid failure. If I connect the relay to grid power, the problem is that when grid returns, the inverter has not yet switched the incoming grid internally as it waits for the grid to be stable. I measured terminals 5 and 6 and no voltage on those terminals when grid is on or when grid fails. I selected Signal Island Mode and still nothing. Any setting that I may be missing?
Hi Arthur, is this what you are looking for..... ua-cam.com/video/-5S1uUTtQps/v-deo.html&ab_channel=GlobalTechChinaLimited Apologies if not.
Hi Keith, can you please explain the Passthrough current on the inverters? In the manuals they indicate the amps but we find that the inverters still trip out af the Max Watt's. On the Victron inverters they have pass through current that runs through the inverter as long as grid is active but with the Sunsynk its limited to max Watts of the inverter.
Thank you
It's 50% more than the rated power of the inverter
Have to say your call centre support is a disgrace. Phoned Liverpool today and was put through to South Africa, could barely understand what was being said and the guy on the phone didn’t seem to know much and was having a discussion with someone else in the background - not impressed at all. Your online instructions are entirely aimed at installers and are very confusing for end users. You need to sort this out!
If the generator connected on the grid side with a CT. How does the inverter distinguish between power from the generator (it doesn't export power) and power from the grid (export is allowed).
You program zero export the CT will prevent the export
What is the noise emission on the 5kwh model
Hi, please can you clarify something for me, I am looking to install a 8KWh Sunsynk Inverter with two 5KWh lithium batteries, an electrician told me that this will give the inverter problems in that it will try to draw more current than the batteries can supply and that I should install 10KWh batteries, any advice would be appreciated, thanks
A good rule of thumb is that lithium batteries can at best only provide 50% of their capacity as continuous discharge. This means your combined 10kWh batteries can only supply 5000W continuously. With that said, unless you actually require 8000W of load capacity while the grid is offline, I see no reason why your 2 5kWh batteries wouldn't be enough to handle normal household usage comfortably
If Sunsynk software has the same basic settings as Deye's (and it looks like it does), you'll be able to limit max battery charge/discharge current to the number of amps that you please (within reason).
As for the recommended max battery charge/discharge current, that'll depend on manufacturer recommendations and type of battery.
The rule of thumb for lithium is 50% of battery capacity (Ah), so if you have a capacity of 200Ah, it should be ok to set a max c/d current of 100A.
Pylontech US5000 is supposed to have a recommended c/d current of 50-75A (with a max of 100A).
In my case, I bought a 5kW Deye battery, the supplier's tech department is telling me that I can set max c/d current to 100A if I want to (even though I only have a single 100Ah battery), since the battery's BMS is smart enough to reduce c/d current to safe levels when needed.
We rarely need 2-3+kW when the battery is discharging (during the evening-night), so limiting c/d current to 50-75A (~2500-4000kW) isn't a problem for us.
Hi, what is difference between deye and sunynk?
Completely different operating system
Hi Keith please make a detailed video of wind turbine on smartload(auxiliary input) specifications of turbine and settings please.
Will do I have some plans to do this
i have a 5kva sunsynk inverter and at night it only charges the battery and continues to use grid power . hiow do i make it use the battery at night and not grid energy
Use the timer on the System Mode screen. Set the SOC you wish to discharge the battery to, and the inverter will use the battery until it reaches your set SOC before using grid power. If you have PV panels, I would also suggest that you disable Battery Grid Charging from the Battery screen, unless you go through an extended period of overcast weather where the PV power is just not enough to charge your battery fully during the day
Keith
Can I run lithium battery’s with no bms ?
Ev battery 48v
DO : sell these to the USA
Unfortunately we don't sell in United States
Please try get orex hybrid inverter for review.
Contact the company
Hi Keith could you email me please I wanna invest in a system for my home in Cape town Northern suburbs.....reasons is cause of eishkom and price of electricity.....I'm using roughly 660kw 700kw a month. And I obviously don't wanna get ripped off. Kind regards Kevin.
Just have a look at our website for dealers