Keep receiving an error message 26: GroundLeak. Anyone any idea what this is or how to resolve?
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It’s when your EVC sees the grid voltage go above 253v. Not a ground leak really.
I get this 3 or 4 times a day when exporting PV to the grid. So it’s either my PV inverter or the DNO. I have not got to the bottom of this yet.
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An update on my voltage issue:- (very interesting) I will post in the other group as well.
Raised a complaint to SSEN on Sunday, they phoned me up at midday to inform me about a visit by an engineer later today (max 3 hrs)
Engineer turned up at 3 ish (very knowledgable and willing to chat through what’s happening). Asked about my system and then said this is all on us and nothing you’re doing is wrong.
He pulled the fuse and measured the voltage so no import or export) and it was 252.8v (so .2 short of the max allowed)
He said he was in the office when the complaints team sent the request to his department, so was able to do some homework before he left (for visits)
Logged onto my smart meter and can see the readings now and back dated. Could see the over voltage. Looked at a few meters in the local area as well and saw all were going over during the day (in this nice weather) as well.
Next he looked at the local sub-station and said it was 11,580v. All substations should be 11,000v. He then looked at a few sub-stations and saw all were above 11,000v.
This meant it was an Area sub-station not a local sub-station issue. He phoned the person that looked after that and they agreed it was an issue. He would turn down the area sub-station voltage (today or first thing in the morning).
My guy would then log back onto the local sub-substations to see if they were back to 11,000v. If not adjust them up/down to get to the correct voltage.
He then said once this is done the sub-stations are automatic and will keep the correct settings going forward. E.g as my local sub-station was 11,580v this is what it was automatically changing to meet this requirement, once at 11,000v it would keep this as the new target.
Lastly he said he would keep my job card open, if I still see an issue to ring up, he will check things again and get them adjusted if needed.
So loads of points to SSEN my local DNO (thank you guys)
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It is the same symptom as a PEN fault. Which also looks for <207 and over 253 on L-N voltage
It will auto reset once the line conditions return to normal
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Isn’t it a bit backwards?
If the voltage is high, let the chargers charge?
As that should to a small extent bring the voltage down or stop it from rising further.
And the more chargers that get told to stop charging, the worse it gets?
Obviously there has to be a limit to protect the car too, but you’d think it could accept a voltage slightly out of spec.
And yes, my frustration is at whoever sets the rules for this, rather than the suppliers!
After giving praise to SSEN 
Hhhmm not happy. Just phoned SSEN.
They have not done anything at the Local or Area sub-stations (as expected)
They are now saying because it has to be done at the Area sub-station it has had to go to planning (could be weeks)
Hi all, a quick update.
Had an unexpected call at 19:00.
Call from SSEN engineer at the local sub-station, he has just adjusted the voltage by 10 volts and said I should not have any more issues.
I asked about the Area sub-station and he said they had a meeting and it would have caused to much disruption to the grid and a possible outage if it was adjusted. So did not get the vote.
Just had a look and this is what it is now, I will keep an eye on it for a few days.
THanks for updatating Dave. I am getting the same error regularly. Installer says it’s DNO’s job, as I am going over that 253 value.
How are you monitoring the voltages that you’ve screenshotted?
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that’s interesting - thanks . was thinking of doing some sort of home automatition server thing later this year but still not entirely sure what benefit it would give me!
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I got a Home Assistant Yellow PoE, just for all my Energy things, not all my house.
It works very well. If you want to go down this route I have posted the process in three stages and can copy the link.
Thanks - may come back to you in the future. Def a winter project.
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