1 - The maximum input voltage is the upper limit of the DC voltage. Any higher inputDC voltage would probably damage inverter. 2 - Any DC input voltage beyond the operating voltage range may result in inverter improper operating 3 - SUN2000-30~50KTL-M3 raises potential between PV- and ground to above zero through integrated PID recovery functionto recover module degradation from PID. Supported module types include:P-type (mono, poly), N-type (nPERT, HIT)