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Input Voltage to premises affecting Solar Inverter
Victor_RH18
Posts: 6 Forumite
in Energy
I’ve recently had a 14 panel, SOFAR inverter plus battery storage installed at my house. Although all seemed to work ok at the start the battery is not charging up now. Installer says it’s due to my house input voltage being too high and the inverter not charging it due to safety issues. I’ve had the input voltage checked by an electrician and it is 250/251V. UK Power tell me their operating range is 216-253V so nothing they can do.
Has anybody else experienced similar issues? Unless voltage drops my battery will be out of use.
Has anybody else experienced similar issues? Unless voltage drops my battery will be out of use.
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Comments
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Yes, there have been a couple of posts about high grid voltages causing inverter drop-outs over on the "green and ethical" sub-forum. If you post over there (or ask for this thread to be moved) you'll get some good responses from the G&E crowd.Here's a recent thread:
https://forums.moneysavingexpert.com/discussion/6359328/solar-inverter-over-voltage-reportsN. Hampshire, he/him. Octopus Intelligent Go elec & Tracker gas / Vodafone BB / iD mobile. Ripple Kirk Hill Coop member.Ofgem cap table, Ofgem cap explainer. Economy 7 cap explainer. Gas vs E7 vs peak elec heating costs, Best kettle!
2.72kWp PV facing SSW installed Jan 2012. 11 x 247w panels, 3.6kw inverter. 35 MWh generated, long-term average 2.6 Os.1 -
Voltage is rarely constant. I have had issues with my Powerwall 2 disconnecting my home from the Grid. This is a graph that Tesla produced for me:Victor_RH18 said:I’ve recently had a 14 panel, SOFAR inverter plus battery storage installed at my house. Although all seemed to work ok at the start the battery is not charging up now. Installer says it’s due to my house input voltage being too high and the inverter not charging it due to safety issues. I’ve had the input voltage checked by an electrician and it is 250/251V. UK Power tell me their operating range is 216-253V so nothing they can do.
Has anybody else experienced similar issues? Unless voltage drops my battery will be out of use.
I contacted my DNO and I asked them to ‘pull’ the 30 minute voltage data from my smart meter. On the basis of these results, the DNO fitted a voltage recorder which showed frequent voltages in excess of 253v. They then came back and ‘tapped’ my local transformer down to a notional 240v. As I post, my inverter is showing a Grid voltage of 246.1v.1 -
Thanks Dolor. The installer is telling me that due to high input voltage the inverter is not charging the battery for safety reasons. Does this make sense to you?0
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Has suggested by a previous post read this and address your comments to the thread. It will give you some good info.
Solar inverter over voltage reports. - Page 3 — MoneySavingExpert Forum
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