Please explain the situation required for an additional reactor when using Delta’s AC motor drives.Delta’s AC motor drives require an additional reactor for the following situations:1.To improve the harmonics of input current2.To limit the voltage spike of input current and protect back-end devices, users can add AC reactors (such as when power capacitor switching causes voltage spikes.)3.Unbalanced three-phase system: open delta connection, single-phase power overload.
