Sunsynk Showing 20kwh Grid Consumption

[NinjaVince]

Can anyone shed some light on my situation. I have been on solar for about 6 months and barely used any grid supply and everything has been working great. However since about 3:20am this morning my grid consumption jumped up to over 20kw(!)... I have only a 12kw inverter and my breakers should not be able to handle that kind of power. I have a prepaid meter and my units are not dropping, my batteries are filling at the usual rate powered only be the solar I am generating. Any idea why the grid consumption would reflect like this?

 

[DrJohnZoidberg]

There is a fault somewhere, I'd just contact the installer. It's likely not actually drawing that power.

Maybe a bad CT? But never known those to fail like this before.

 

[A3@MBB]

What does it show when you cut the main incoming breaker?

 

[GrootVoet]

Can you try and reset the system by switching off and on?

Just make sure you know the sequence how to do it.

 

[DrJohnZoidberg]

Can you try and reset the system by switching off and on?

Just make sure you know the sequence how to do it.

 

[GrootVoet]

View attachment 1861245

95% proper ability is going to work

 

[ectypal]

Check the CT ratio in the advanced settings. It should be default 2000: 1

 

[NinjaVince]

I did contact installer, he suggested I switch to mains while he remotely updates the inverter, then we will check again. Update in progress...

 

[NinjaVince]

After the updates the issue persisted. Installer spoke to Sunsynk and they believe it is a CT coil issue, perhaps a loose connection. They will be on site tomorrow to check it out, fingers crossed!

 

[DrJohnZoidberg]

After the updates the issue persisted. Installer spoke to Sunsynk and they believe it is a CT coil issue, perhaps a loose connection. They will be on site tomorrow to check it out, fingers crossed!

Maybe a rodent got in somewhere and chewed something.

 

[Flanders]

After the updates the issue persisted. Installer spoke to Sunsynk and they believe it is a CT coil issue, perhaps a loose connection. They will be on site tomorrow to check it out, fingers crossed!

Interesting. Please keep us posted.

 

[Speedster]

Can anyone shed some light on my situation. I have been on solar for about 6 months and barely used any grid supply and everything has been working great. However since about 3:20am this morning my grid consumption jumped up to over 20kwh(!)... I have only a 12kw inverter and my breakers should not be able to handle that kind of power. I have a prepaid meter and my units are not dropping, my batteries are filling at the usual rate powered only be the solar I am generating. Any idea why the grid consumption would reflect like this?
View attachment 1861237
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View attachment 1861236

You mean 20kW... Very different to 20kWh

 

[NinjaVince]

What does it show when you cut the main incoming breaker?

I switched off the main municipal breaker last night and it dropped to 0w on the inverter display/app. Left it like that waiting for the installer to check it out today.

 

[NinjaVince]

The installer verified it was the CT coil, loose connection. All sorted!

 

[wingnut771]

The installer verified it was the CT coil, loose connection. All sorted!

Surely the only connections are inside the inverter, how does that happen?

 

[NinjaVince]

Surely the only connections are inside the inverter, how does that happen?

Yeah what a mystery... definitely no interference from living organisms so maybe it was a questionable connection from the start and a breeze moving through the garage disturbed it? We do get some heavy winds here in PE