1.have CE, TUV, VDE,10 countries certificates; 2.5 Years Warranty ; 3. 97% Efficiency ; 4. IP65 ; 5.Good quality& ... frequency (Hz)505050/6050/60Power factor>0.99>0.990.95lagging…0.95leading0.95lagging…0.95leadingTotal Harmonic distortion(THD)<3%(rated ... RS232RS485/RS232Warranty5 years5 years5 years5 yearsGrid supportyesyesyesyes 100KW Solar PV Inverter (with CE, TUV, VDE,10 countries certificates)