... the following: 1: This inverter combines solar controller, with function of busbar chamber. That’s to say, they ... three is no need to purchase one set of busbar chamber separately. In this way, it ... fully protect system all the way 4: 9 kinds of protection, for current, wiring, voltage, frequency, AC ... far away from users. 7: Used digital phase-locked loop(digital PLL),it has less interference for public ...