JSI inverters have certificates about VDE126-1-1, DK5940, AS4777, IEC62109-0, ... -2, EN50178, EN6100, G83/1, CE..ect. JSI-3000TL 3KW Solar on-grid inverter benefits1.High frequency grid tie inverter 2 ... and frequency range depend on local standards. 3kw Grid-tie Inverters