A: 1. Three phase photovoltaic energy storage system is usually the best choice for three-phase household application scenarios of court power, or industrial and commercial application scenarios such as shopping centers, parking lots and stations, with unbalanced output function. In order to realize unbalanced output, intelligent ammeter with CT function is usually used to monitor the load consumption of each phase in real-time operation, so that the inverter can adjust the output power of each phase accordingly
2. Seamless switching of power failure: UPS level off grid switching means that the switching time of standby power supply from grid connected mode to off grid mode is less than 20ms, which is the time that most ordinary household loads can pass through without cutting off the power supply.