The UNI-SOLAR certificate has been removed from our homepage owing to the Technical Information Bulletin 009-010 from United Solar Ovonic, which states:
“For optimal system performance United Solar Ovonic (USO) strongly recommends using inverters with isolation transformers together with our UNI-SOLAR products. Loss of performance as a result of using a transformer-less inverter will not be covered by USO's Warranty.”
For further information please read the United Solar Ovonic bulletin or contact Danfoss Solar Inverters A/S.