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Replacing a 4kW transformer based inverter for a PV system

LittlePlumb
Hi All,

Can anyone assist me please? We installed a 4kW two string PV array in 2011 utilising an inverter which had a transformer and hence galvanic isolation. The inverter has broken and needs replacing, however, inverters these days all seem to be transformerless. Does anyone know where I can purchase a transformer based inverter pls?

Pete
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    Thanks Jam. I will order the latest COP and take a look at the recommendations re transformerless inverters and array bonding. The array is ground mounted on a wooden frame, and the system earth is I believe PME, the installed RCD is I believe DP type AC, so there are a few things to consider before replacing the inverter. Not sure about bonding the array to a PME earth though, given that the PV modules are all Class II and the DC cabling is double insulated the array is probably not an extraneous conductive part, I'll need to measure it with respect to the MET.
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    Thanks Jam. I will order the latest COP and take a look at the recommendations re transformerless inverters and array bonding. The array is ground mounted on a wooden frame, and the system earth is I believe PME, the installed RCD is I believe DP type AC, so there are a few things to consider before replacing the inverter. Not sure about bonding the array to a PME earth though, given that the PV modules are all Class II and the DC cabling is double insulated the array is probably not an extraneous conductive part, I'll need to measure it with respect to the MET.
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