Anyone elses Sunsynk (or other inverter) getting ghost-disconnects?

Been having the same "ghost disconnects" 5 or 6 times today. Have contacted my installer to look into it. Everything appears to be normal besides this - all appliances, essential and non-essential still working. No discernible voltage, current or frequency spikes. Sunsynk 5kW with 10K battery. Very random and intermittent.
 
RonSwanson said:
Share all your grid settings screens?
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Hi @RonSwanson

So it seems dumping the raw data has helped.

After doing some Excel work to match-up the info to when i get the "Grid Disconnected" message, I found the following pattern:

Everytime I get the grid disconnect, a few seconds before, Input Voltage A, B,and C all went to 218.9V - everything else remains the same.

Outside of those alerts, the input voltage sits between 239.4 and 237.1

So it seems something is randomly causing my input voltage to drop below 220V on all 3 phases. but what is also confusing me is unless i was looking in the wrong place, the inverter is set to only detect low voltage as 185V and below... ?
 
neoprema said:
Hi @RonSwanson

So it seems dumping the raw data has helped.

After doing some Excel work to match-up the info to when i get the "Grid Disconnected" message, I found the following pattern:

Everytime I get the grid disconnect, a few seconds before, Input Voltage A, B,and C all went to 218.9V - everything else remains the same.

Outside of those alerts, the input voltage sits between 239.4 and 237.1

So it seems something is randomly causing my input voltage to drop below 220V on all 3 phases. but what is also confusing me is unless i was looking in the wrong place, the inverter is set to only detect low voltage as 185V and below... ?
Click to expand...
218.9V is perfectly normal.
 
wingnut771 said:
my ninja edit was too slow :ROFL:
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oh hahaha :)

Ok so my next question is, could there be a setting somewhere on the inverter i missed that is set at 220V as a min? Other than the image above i posted.
 
wingnut771 said:
I doubt it.
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i know what you saying but there's a definite pattern - voltage is never below 230V but it goes to 218 and everytime its doing that in the Excel data, is the exact time my Sunsynk app tells me "Disconnected from Grid" so there must be some kind of correlation? If not voltage related then maybe something else.
 
Early this morning when I was running on batteries alone I must have had 15 of these ghost disconnects within an hour. Haven't looked into it yet but grid voltage is sitting at an alarming 255V.
 
Flanders said:
Early this morning when I was running on batteries alone I must have had 15 of these ghost disconnects within an hour. Haven't looked into it yet but grid voltage is sitting at an alarming 255V.
Click to expand...
That's a last mile problem. Log a fault. Voltage at my house is 227V.
 
wingnut771 said:
That's a last mile problem. Log a fault. Voltage at my house is 227V.
Click to expand...
240 at my place, has been 255 at night when faults occur nearby, even the frequency is a local issue.
 
Lupus said:
240 at my place, has been 255 at night when faults occur nearby, even the frequency is a local issue.
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We determined that the frequency is not a local issue in my thread a while back. It is the same all over the country. It is the heartbeat of the grid.
 
wingnut771 said:
That's a last mile problem. Log a fault. Voltage at my house is 227V.
Click to expand...

257 today. :crying:

And a ton of ghost disconnects in the wee hours again. I did report this before but it went unanswered. Wonder why it seems to get worse at those times.
 
So this ghost-disconnect thing is definitely related to grid voltage. Seems that when it hits 260 I get a sunsynk alert saying disconnected from grid. Neighbour confirms with corresponding alerts on his setup. Not sure what's happening though because essentials stay on, which I thought wouldn't happen if the eskom supply was cut. Unless maybe the spike only lasts a few milliseconds... :unsure:

Fault reported. Really hoping it gets sorted.
 
Trying to figure out what I actually have to do to get this voltage issue fixed. I have reported it twice and nothing ever happens. Just followed up on previous reference number and the idiots say it's been resolved. I sit with eskom voltage hovering around 256V during the day and then most nights I have up to 30 sunsynk alerts when voltage spikes over 260V.
 
Flanders said:
Trying to figure out what I actually have to do to get this voltage issue fixed. I have reported it twice and nothing ever happens. Just followed up on previous reference number and the idiots say it's been resolved. I sit with eskom voltage hovering around 256V during the day and then most nights I have up to 30 sunsynk alerts when voltage spikes over 260V.
Click to expand...
Maybe install your own transformer to bring the voltage down to 230V?
 
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