Potential induced degradation (PID) is a phenomenon that impacts the ions of a solar cell and results in the degradation of the output of that cell. PID can significantly reduce the power output of a photovoltaic (PV) module within the first year of operation, with power losses at the module level as high as 70% in the first 18 months. These module level losses can progress rapidly and become so severe that they affect the performance of an entire system.
Anti-PID method for Delta Inverters
With a CCD camera and the EL mode activated, the light emission of the modules recorded by the camera can indicate defective modules that decrease energy performance.
Benefits of Pro EL-Mode in M125HV & M250HV
PV Arc Faults result from a failure in the intended continuity of a condutor. When a conductor is interrupted and forms a spark, it will will produce light and a high amount of heat which can lead to fires and property damage.
Causes of Arc-Faults include:
Delta's inverters will shut down automatically with the occurence of an Arc Fault, thus avoiding fires and property damage in the PV plant.
Following the UL1699B, the inverter trip time will be less than 2.5 seconds after the arcing is detected, it can occur faster depending on the situation.
Delta's inverter models with Arc Fault Detection feature include: M15A_220, M20A_220, M30A_230, M50A_260, M70_260, M100A_280, M250HV.