The installation company have just visited & modified the arrangement they seem a bit coy over what they have done they have split the strings & now I have 2 additional cables & a second DC isolator but the were unable to reconfigure the Inverter as the display has blanked so now I get a new inverter tomorrow.... At the moment I am just running on 1 string until the changeover not a problem as the weather is dull & cloudy.
The original arrangement was 2 strings of 8 x 250W Sunrise SolarTech (Chinese) monocrystalline panels mounted on a south facing 45 deg roof, inverter is a power one Aurora PVI-3600-UK loft mounted. I have a remote monitor that works from a pulse sensor mounted on my generation meter it is a Solo PV Display manufactured by GEO (Green Energy Options Ltd) it displays the power generating in real time & the total for the day it stores the info on an SD memory card which you can download to their program installed on my PC. A neat unit supplied by my installer as part of the package. This problem is costing them some cash as they had to erect scaffolding to access the roof.
You need the software disk and a laptop to configure the Aurora at startup to accept the 2 strings and configure the display.
I had a PVI 3000 us installed alongside an SMA SB3800 and the daily output was significantly lower than the SMA, so I had my installer swap it out as it was not the inverter that they had specified in my contract. Both strings produced the same out put per day following the swapout.
Well they came today & installed a new inverter, another Aurora but this time it is a PVI-3.6-OUTD-GB same spec as original but an outdoor model. Weather is very dull wet & 10 Deg Celsius so output is minimal 0.02kW at the moment 2.30PM. Probably won't get any more cold bright sunny days now to test the set up.