Evening folks,
Dad's had a solar PV array fitted last week and its thrown up something interesting!
2 years ago when I moved/replaced his consumer unit the incoming voltage was around the 243v mark, fair enough I thought, however things have changed, the inverter is showing 250v pretty much all the time during generating hours, sometimes even higher! I have verified the inverter's reading with calibrated test equipment.
It looks like the DNO (EMEB/Central Networks) have been busy, what is even more concerning is that the 11000/415 transformer is a good 350 metres away!
Now, because this is so close to 253v, if this limit is breached the inverter will shut down, and it appears from its logs that this has happened around 16:00 on a couple of occasions this week, I assume the connected local load is at its lightest at this time, pushing the voltage up.
This is pretty serious as its effectively costing Dad money now when this happens! I could do with taking a measurement from some neigbors nearer the TX to put to the DNO as in theory they will be a bit higher and probably over the 253v mark.
Any thoughts ladies and gents?
Dad's had a solar PV array fitted last week and its thrown up something interesting!
2 years ago when I moved/replaced his consumer unit the incoming voltage was around the 243v mark, fair enough I thought, however things have changed, the inverter is showing 250v pretty much all the time during generating hours, sometimes even higher! I have verified the inverter's reading with calibrated test equipment.
It looks like the DNO (EMEB/Central Networks) have been busy, what is even more concerning is that the 11000/415 transformer is a good 350 metres away!
Now, because this is so close to 253v, if this limit is breached the inverter will shut down, and it appears from its logs that this has happened around 16:00 on a couple of occasions this week, I assume the connected local load is at its lightest at this time, pushing the voltage up.
This is pretty serious as its effectively costing Dad money now when this happens! I could do with taking a measurement from some neigbors nearer the TX to put to the DNO as in theory they will be a bit higher and probably over the 253v mark.
Any thoughts ladies and gents?