On 2021/08/06 at 9:32 PM, danamix1 said:

I am getting a negative watt reading on the CT before the CT wires are even plugged in. When the CT is plugged in I get positive readings but it seems to under read what is really being drawn from the grid. This is all resulting in me using a lot more power than I should be. Does anyone have any idea what could be causing this kind of interference? 

According to the SunSync Installer Manual - pg25: - the clamp is directional and probably the wrong way around.

Edited November 12, 20214 yr by system32
Typo

Hi everyone,

I've been trying to find to answer to my question on the forum without success, so hoping that I'll get an answer by posting.

My CT is installed correctly and I get readings from it on the "summary" table when selecting the top right "gauge" on the display. I can also see the CT readings from my Solarman APP, but only by going to the inverter's parameters, etc.

I compared with a friend's installation, and a whole lot of pictures on the forum, and I can see that the CT coil should be displayed on the system flow page. Mine does not show up on that diagram. 

I have a 5.5kw Sunsynk with firmware E419 MCU:3162. I've requested a firmware upgrade from Sunsync a week or so ago, but they don't seem very quick on support....

 

Untick the box that says limit to load. Or something in that line. Can't access my inverter now to confirm. 

Edited November 29, 20214 yr by swazz99jhb
Added photo

50 minutes ago, swazz99jhb said:

Untick the box that says limit to load. Or something in that line. Can't access my inverter now to confirm. 

swaxzz, are those your settings? If so your battery may die of old age without ever giving you much benefit.

Old photo. Switched off the timer during loadshedding. Battery is currently fcked anyway sitting at 75% and not charging back (different thread). 

Getting panels in February. Will make better use of the battery then. 

23 hours ago, swazz99jhb said:

Untick the box that says limit to load. Or something in that line. Can't access my inverter now to confirm. 

 

That did the trick, thank you! 

You won't believe me if I told you, but I spoke to SunSynk's local support guys and they couldn't tell me this....

Thank you ... This thread helped me understand why there was a difference between purchased units reported by the inverter and prepaid meter.

Hi all, having a bit of an issue with my new install. It's a 5kw SunSynk with 5.1kw BSL battery. I'm not feeding back into the grid, so do I need a CT coil? Which way does the arrow need to point, towards the inverter or incoming direction? Which pins do the black and white wires connect to on the inverter?

Panels are not yet installed, so charging from the grid.

Thanks

 

 

Edited January 16, 20224 yr by HennieB84

54 minutes ago, HennieB84 said:

Hi all, having a bit of an issue with my new install. It's a 5kw SunSynk with 5.1kw BSL battery. I'm not feeding back into the grid, so do I need a CT coil? Which way does the arrow need to point, towards the inverter or incoming direction? Which pins do the black and white wires connect to on the inverter?

Panels are not yet installed, so charging from the grid.

Thanks

 

 

Keen to see answer, as I essentially just asked the same.   No idea why this simple bit of info is glaringly missing from the SunSynk manual.

55 minutes ago, HennieB84 said:

Hi all, having a bit of an issue with my new install. It's a 5kw SunSynk with 5.1kw BSL battery. I'm not feeding back into the grid, so do I need a CT coil? Which way does the arrow need to point, towards the inverter or incoming direction? Which pins do the black and white wires connect to on the inverter?

Panels are not yet installed, so charging from the grid.

Thanks

 

 

You don't need it, but it will show usage from grid. Arrow is with the flow thus towards db/inverter. Manual says 5 & 6. Can't remember if that was correct. Search on the forum, there was discussion on it. 

If you want to use your system optimally you definitely need a CT coil.  Your non-essential loads are effectively a domestic grid. If you set CT export limit to load (EDIT: double check this with a Sunsynk expert) you can power non-essentials like oven, geyser and whatever else you configured that way with excess solar production during the day.  I think the arrow must point to the inveterter, but if you get a negative readout just swop the leads on pins 5 and 6.

Edited January 17, 20224 yr by Scubadude

@Scubadude, unless I misread what you said, if you tick “ limit to load”, then only the essentials will be powered by solar and non-essential will draw from the grid.

This is a common misconception - even my solar guy didnt understand. But after half a dozen comebacks, he does now. 

One of the reasons for having a hybrid inverter is exactly because it can be used to power non-essential loads with excess solar.   

• "Zero export" means no power goes anywhere other than to batteries and essentials.
• "Limit to load only" means excess solar is used to power non-essential loads between the CT coil and inverter when excess solar power is availble. The CT coil is crucial to stop this exported power from going into the grid.  EDIT: Double check this with a Sunsynk expert - I may have had it wrong. 
• "Sol exp batt full" is for when you backfeed into the grid. 

The Deye manual may be clearer than Sunsynk in this regard even if the selections are done inversely . Read Essential for Backup Load, Non-Essential for On-Grid Home Load in the section below. 

 

Edited January 17, 20224 yr by Scubadude

2 hours ago, HennieB84 said:

Panels are not yet installed, so charging from the grid.

I missed this bit ... if you dont have PV then you dont need the CT coil as the batteries will never power non essentials or export yto the grid.  CT is only to direct and regulate solar produciton.  

hi guys, by no ways new to the forum, however VERY new to sunsync, in short i installed 3 systems about 3 years or so ago, one at my house, one at parents place, one a dads work. At all three i installed the goodwe ES inverters because back then it felt like sunsync or deye was the new kid on the block and there was very little info available and i had no idea how after sales support would be, although i was very tempted to take them above the goodwe. Long story short, the goodwe's served me well, however i recelntly upgraded all three installations to sunsync 8kw units, i am however struggling with the settings....

 

first off, the first inverter does not give the work mode one and two under the settings, it basically only has one work mode setting tab, not the work mode two setting.... i think this is probably firmware... can i download the firmware and do update myself, i did it few times with goodwe, isn' rocket science, or do i request an update from sunsync remotely...?

 

Secondly, is workmode one for on grid conditions, and work mode two for offgrid...? In this thread i find conflicting info regarding the ct, must the ct arrow point towards or flowing back into grid, meaning out off or away from inverter, or other way around....?

 

Secondly, on the one system i am unable to get the system to use the batteries....? It is a 8kw sunsync with hubble batteries.... but it will not use the batteries, and since yesterday it basically stopped using or producing any solar as well....?

 

i attached screenshots of my workmode settings... the option under work mode two, inverter power limit, what does that mean, does it mean the maximum kw the inverter can feed back to loads, or is that the maximum kw combined between grid and inverter power, i do not want to feed back to grid, so do it tick xero export, or do i just limit the wattage feedback to the grid.... i do not understand why the one inverter stopped using or producing solar, i changed some settings yesterday, but it is similar to one of the other setups and the other one is working fine, this system is only producing like 15-20watt from pv, basically doing nothing...

 

any advice would be appreciated...

 

p.s. can the big brains please comment... @Achmat @Bloubul7 @Scubadude @YellowTapemeasure @Sc00bs

@Iseli Energy @FixAMess

 

thanx for a great platform....

Edited January 16, 20224 yr by Saint
sentence did make logical sense

oh, i forgot, at the thrid installation, it seems like the inverter is not doing what i want it to do, i set tha battery limits under work mode two, yet during the night i will drain the battery until the battery shuts down, this is at the system with the older firmware, also using hubble batteries, inverter is picking up comms from the batteries, but it doesn't seem to do what i think i programmed it to do, error might be just outside the inverter screen though admittedly....

8 hours ago, Saint said:

hi guys, by no ways new to the forum, however VERY new to sunsync, in short i installed 3 systems about 3 years or so ago, one at my house, one at parents place, one a dads work. At all three i installed the goodwe ES inverters because back then it felt like sunsync or deye was the new kid on the block and there was very little info available and i had no idea how after sales support would be, although i was very tempted to take them above the goodwe. Long story short, the goodwe's served me well, however i recelntly upgraded all three installations to sunsync 8kw units, i am however struggling with the settings....

 

first off, the first inverter does not give the work mode one and two under the settings, it basically only has one work mode setting tab, not the work mode two setting.... i think this is probably firmware... can i download the firmware and do update myself, i did it few times with goodwe, isn' rocket science, or do i request an update from sunsync remotely...?

 

Secondly, is workmode one for on grid conditions, and work mode two for offgrid...? In this thread i find conflicting info regarding the ct, must the ct arrow point towards or flowing back into grid, meaning out off or away from inverter, or other way around....?

 

Secondly, on the one system i am unable to get the system to use the batteries....? It is a 8kw sunsync with hubble batteries.... but it will not use the batteries, and since yesterday it basically stopped using or producing any solar as well....?

 

i attached screenshots of my workmode settings... the option under work mode two, inverter power limit, what does that mean, does it mean the maximum kw the inverter can feed back to loads, or is that the maximum kw combined between grid and inverter power, i do not want to feed back to grid, so do it tick xero export, or do i just limit the wattage feedback to the grid.... i do not understand why the one inverter stopped using or producing solar, i changed some settings yesterday, but it is similar to one of the other setups and the other one is working fine, this system is only producing like 15-20watt from pv, basically doing nothing...

 

any advice would be appreciated...

 

p.s. can the big brains please comment... @Achmat @Bloubul7 @Scubadude @YellowTapemeasure @Sc00bs

@Iseli Energy @FixAMess

 

thanx for a great platform....

If you are not getting Work Mode 1 and 2 screens then you are on a very old version of firmware. Arrange an update ASAP, for all of the inverters. https://www.sunsynk.org/tech-support , hit Inverter Upgrade.

Work Mode 1 and 2 are both used for Hybrid or Grid-tied, the one is a timer where you instruct the inverter how it should treat the battery, the other covers things like whether or not you export to grid, grid trickle feed and how it uses solar output.  

Here are my notes on this:

Here is @system32notes: 

The CT's arrow points towards the grid, but you can confirm by looking at your information screen, if the CT value is mostly negative, your CT is installed the wrong way, flip it around.

It is very important to ensure that the battery has comms with the inverter. Check the LibBMS setup screen, if you are getting values from the battery (charge rate, discharge rate, SoC etc.) then it's good, if not, sort out the comms.

11 hours ago, Scubadude said:

If you set CT export limit to load you can power non-essentials like oven, geyser and whatever else you configured that way with excess solar production during the day

if you tick limit to LOAD ( essential circuits ), then all your non-essentials ( between ct coil and inverter) will be powered from the grid, not solar, just confirmed it on my Sunsynk

On 2022/01/17 at 7:59 AM, Tariq said:

if you tick limit to LOAD ( essential circuits ), then all your non-essentials ( between ct coil and inverter) will be powered from the grid, not solar, just confirmed it on my Sunsynk

I'm sorry @Tariq, this is not correct.  Do not confuse solar and battery power.  Batteries will only power essential loads (and smart / aux loads when there is sufficient charge). Solar (i.e. PV production) can power anything including the national grid, depending on the setup. 

@Tariq is right ... small difference in the meaning of "Load" between Deye and Sunsunk  

I will find the bits in the manual and post it here.

Edited January 18, 20224 yr by Scubadude

@Scubadudeunless I am mistaken somehow, I did an actual test on my Sunsynk about 20 minutes, ago, unless that is one of the differences with Deye.

i am not necessarily right all the time😃

Edited January 17, 20224 yr by Tariq

Hi guys, thanx for the replies... i will need to recheck the ct of the one unit which i am struggling with although i am sure it is correct otherwise the usage on that house with the prepaid meter would have doubled... two of the inverters has never firmware since i have the option there or tabs for work mode one or two... i will request an update for the third one and see if it helps.... comms on batteries was working on all of them, or two of them who has supported batteries, i checked and confirmed, the third one has a battery brand installed not listed or supported so understandably comms is not working but it seems to be working fine after i manually configured the charge and voltage settings etc....

 

 

Just think about it logically ... a hybrid inverter can feed energy back into the grid.  So your excess solar production can power your neighbour's stove, geyser, whatever.  @Tari, if what you saids is true, you can do this but not power your own non-essentials (stove, geyser, pool pump). What the CT coil does is it stops the exported power before it leaves your house and then limits production to your own demand.

Notice position of CT coil with non essential load between it and the inverter.

Why would an inverter have an output for non-essential loads if it cannot power it?

Here is the actual page from the Sunsynk manual.

I know reading the manuals is dull like dishwater but combined with lots of learning by doing is the only way to truly understand your system's capabilties and then maximise the economic benefit.  

 

 

Edited January 17, 20224 yr by Scubadude

@Saint, as a start you need to untick "Grid Charge" to allow the system to use the batteries while there is mains supply. Load priority is set correctly, but enable "limit to load only" (see my monologue above).

@Scubadude, to each his own, I did an actual test plus also a friend of mine has the same results, so as they say to each his own, everyone is entitled to their opinion.

True that. My opinion is saving me money. For me that's kind of a big thing.

If you can't do the same your CT coil is incorrectly installed or your configuration is incorrect.

Edited January 17, 20224 yr by Scubadude