By using a 2 phase to 3 phase converter circuit, it is possible to efficiently utilize a two-phase power supply and generate a three-phase power supply. . The 3 phase AC supply system has a supply voltage range between 380-440 V and a frequency of 50 Hz. This motor is used to pump water from a depth of 45 ft inside a well, so it is always a loaded motor. The operating current at this load when there is 3 phase supply is 7 A approximately at each. . Use the multiphase regulation setting in systems with a three-phase connection to the utility grid. The setting defines how the ESS interacts with the different phases. However, at the distribution level, depending on the voltage/power rating, a mixture of single phase and three-phase systems is used. How many chapters in energy storage?.