Over Voltage as SolarEdge SE3500 Error Code 33 Trips out frequently. 253v / 264v ?

[Gavin A]

Re: Over Voltage as SolarEdge SE3500 Error Code 33 Trips out frequently. 253v / 264v

it is contrary to G83 as the inverter would have no way of monitoring the grid voltage the other side of the VO unit, so while the voltage at the inverter would be fine, the voltage the other side of the VO unit would be say 18V higher than whatever voltage the inverter was seeing.

 

[TedM]

Re: Over Voltage as SolarEdge SE3500 Error Code 33 Trips out frequently. 253v / 264v

Yes, I understand that. But in those circumstances the inverter would only be outputing, say, 222V and I cannot see where in G83 it says this would be a problem? Perhaps there is a design issue with VO units and reverse current flow?

And possibly G83 itself needs an update to add a paragraph on VO.

 

[richsogecko]

Re: Over Voltage as SolarEdge SE3500 Error Code 33 Trips out frequently. 253v / 264v

Solaredge inverters can be set to UK230 or UK240 depending on the local grid voltage. They can also be updated remotely if a support ticket is raised with Solaredge Technical support.

If you're getting 245V from the mains it sounds like your inverter has been set to UK 230 and small transient spikes are tripping you off.

Contact the installer/DNO/Solaredge and see if you can have the inverter set to UK240 which will give you a bit more tolerance in the +10%/-6% range of voltages

 

[richsogecko]

Re: Over Voltage as SolarEdge SE3500 Error Code 33 Trips out frequently. 253v / 264v

Also as mentioned earlier, VO won't help you...

Your PV has to be connected at grid voltage i.e. 'before' any VO unit.

 

[sja]

Re: Over Voltage as SolarEdge SE3500 Error Code 33 Trips out frequently. 253v / 264v

Issue now rectified ! :bulb2:
Thanks for folks responses. To let you know my issue was fixed when SolarEdge did a remote Software / Firmware upgrade on my SE3500 (via the Ethernet connection I suppose) I didn't get many details other than it should solve the problem which after a week of observation it apparently has. Pleased about that! I now see my supply voltage fluctuate between ~245 and 253V but it no longer causes the inverter to trip.