Single/ Three Phase Automatic Variable Frequency Drive is designed to offer automatic torque boost and slip compensation. The Automatic Variable Frequency Drive operates on a range of 230V / 1 Phase 0.05 HP to 3 HP or 415V / 3 Phase 1 HP to 10 HP. The Automatic Variable Frequency Drive is designed with PID feedback control facility. The Single/ Three Phase Automatic Variable Frequency Drive works on low noise carrier frequency of up to 15kHz.