Andreas C.
I bought Q7 series an year ago and they underperform obviously!…
I bought Q7 series more than a year ago ... For some reasons we had delays in activating that small pv-system . They are DECLARED 360VA BUT if cos Φ is close to 0.9 IT is NOT TRUE ! So I bought those μinverrer for PV MODULES of 350W but they are not able to produce more than 276W with 1000W/m2. (musurated with Irradiation sensor calibrated from a sensor calibrated in ref chain by Fraunhofer Institute.)
Response from Enphase EnergyMay 16, 2025
We understand your concerns regarding the performance of the IQ7 microinverters (IQ7A). Your use of calibrated measurement tools and reference to the Fraunhofer Institute demonstrates a thorough approach, and we take such insights seriously. It is visible from the PV module power that the microinverter is slightly underpowered with respect to the connected DC power. We recommend the DC-AC ratio of >1 The nominal power of IQ7A (360VA) is the actual output observed under Standard Test Conditions in testing laboratories. Please note that the performance of PV systems can be influenced by several factors, including installation conditions, system configuration, and environmental variables. Request to share the irradiance data which you are referring to, along with the system SLD, for analyzing the system at [email protected] referencing this case# 18022481.




