SV84T0040G 4 kW 380V Three Phase to Three Phase Sensorless Vector Inverter Variable Frequency Drive (400 Hz) Overview The SV84T0040G is a 4 kW three phase to three phase variable frequency drive that uses sensorless vector control to deliver precise motor speed and torque regulation without the need for external speed sensors. Rated for 380V input and capable of output frequencies up to 400 Hz, this VFD is designed for industrial and test applications that require compact, reliable motor control. Key benefits Precise motor control without additional sensors: sensorless vector control provides stable lowspeed torque and accurate speed regulation while reducing wiring and component count. Wide frequency range: supports output up to 400 Hz for applications that require higherthanstandard frequencies or specialized testing environments. Direct replacement for three phase systems: designed for 380V three phase input and three phase output to drive standard industrial AC motors rated around 4 kW. Smooth starts and stops: variable frequency operation reduces mechanical stress on driven equipment, improving operational stability and uptime. Compact, panelfriendly design: fits into typical industrial control panels for straightforward integration into existing systems. Core functions and performance Function: Converts fixedfrequency three phase 380V supply to an adjustablefrequency three phase output to control motor speed and torque. Control type: Sensorless vector control for improved lowspeed torque and dynamic response without a speed feedback device. Frequency capability: Continuously adjustable output frequency with a maximum of 400 Hz for extended application flexibility. Power rating: 4 kW nominal motor output suitable for mediumpower industrial drives. Application scope: Designed for controlling three phase AC motors in industrial automation, test benches, and process equipment. Compatibility and integration Compatible with three phase AC motors around the 4 kW range; suitable for induction motors commonly used in industrial applications. Electrical interface: three phase 380V input and three phase output configuration matches standard industrial power systems. Integration: compact format and standard electrical connections enable installation in control cabinets and existing drive systems. Practical use scenarios Pump and fan speed control: Smooth variablespeed operation for HVAC, water circulation, or process pumps where flow and pressure must be modulated. Production line drives and conveyors: Precise speed control and soft starts to reduce mechanical shock and synchronize line operations. Test benches and frequency testing: Provide adjustable frequencies up to 400 Hz for motor or component testing where nonstandard frequencies are required. What makes it stand out Sensorless vector control delivers accurate, lowspeed torque control without encoders or tachometers. frequency capability expands the range of possible applications beyond typical VFD limits. Designed for straightforward replacement or upgrade in three phase 380V systems, minimizing retrofit complexity. Specifications summary Model: SV84T0040G Power rating: 4 kW Input voltage: 380V three phase Output: Three phase AC, variable frequency Maximum output frequency: 400 Hz Control method: Sensorless vector control Recommended considerations Verify motor rating and thermal limits to ensure compatibility with a 4 kW drive. Ensure proper cooling and panel ventilation when installing in confined enclosures. Match motor and load characteristics for performance at low speeds and elevated frequencies. The SV84T0040G provides a compact, sensorless vector VFD solution for precise motor control at standard and elevated frequencies, simplifying installation while broadening application flexibility.