B
besafe
We recently installed a 10kW system on a rural farm building.
The pre-existing incoming voltage was 257V ..... a single phase supply fed from a dedicated pole mounted transformer next to the building.
Being subject to G59 regs, the overvoltage cut-out has to be set at 253V.
I spoke to the DNO (YEDL) to address the pre-existing high voltage ..... it was like pushing water uphill.
Eventually (and I mean several weeks later) they replaced the transformer and agreed to put it on the lowest tap setting.
The problem:
They have put it on the lowest tap setting = 249V off-load (during the day) .... what's happening with the european norm of 230V
Once the sun kicks in, the G59 Inverters (2x4kW SMA) take in turns to cut-out due to over voltage.
The DNO just quotes, it's within 230 +10% and -6%
This must be a national problem. Certainly in the rural areas.
Has anyone else had this problem.
I know I could send in a request to DNO seeking permission to raise the over voltage level ... but that's not acceptable IMO.
Any feedback would be appreciated, before I start pushing that water back uphill.
The pre-existing incoming voltage was 257V ..... a single phase supply fed from a dedicated pole mounted transformer next to the building.
Being subject to G59 regs, the overvoltage cut-out has to be set at 253V.
I spoke to the DNO (YEDL) to address the pre-existing high voltage ..... it was like pushing water uphill.
Eventually (and I mean several weeks later) they replaced the transformer and agreed to put it on the lowest tap setting.
The problem:
They have put it on the lowest tap setting = 249V off-load (during the day) .... what's happening with the european norm of 230V
Once the sun kicks in, the G59 Inverters (2x4kW SMA) take in turns to cut-out due to over voltage.
The DNO just quotes, it's within 230 +10% and -6%
This must be a national problem. Certainly in the rural areas.
Has anyone else had this problem.
I know I could send in a request to DNO seeking permission to raise the over voltage level ... but that's not acceptable IMO.
Any feedback would be appreciated, before I start pushing that water back uphill.