3-Phase VFD Inverter

The SINEE EM730-250-3 is a versatile and reliable variable frequency drive designed for industrial three-phase AC motors up to 250 kW. It supports a three-phase input voltage of 340–460V AC and incorporates advanced vector control technologies, including VVF (vector V/F) and sensorless vector control (SVC) for precise speed and torque control. The inverter features a detachable LED keypad, Modbus RTU communication capability, and comprehensive protection functions to maintain safe and stable operation in demanding environments.

Key Features

• Motor Compatibility: Three-phase AC asynchronous motors; also compatible with permanent magnet synchronous motors (non-standard versions)

• Power Rating: 250 kW

• Input Voltage: Three-phase 340–460V AC

• Control Modes: V/F (VVF), SVC

• Output Modes: Speed and torque control

• Special Functions: High-frequency output up to 3000Hz, rewinding and unwinding capability

• Protection: Overcurrent, short circuit, overload, overheating, phase loss, load loss, external fault

• User Interface: Detachable LED keypad with digital display and function keys

• Communication: Modbus RTU

• Cooling: Forced air cooling system

• EMC: Integrated C3 filter

• Protection Class: IP20

• Operating Temperature: Up to 50°C

• Applications: Industrial rewinding and unwinding, cranes, HVAC systems, cable production, manufacturing machinery, and other industrial automation