3-Phase VFD Inverter

The SINEE EM730-400-3 is a high-performance general-purpose variable frequency drive designed for industrial motor control up to 400 kW. It supports three-phase AC input voltage of 340–460V and incorporates advanced VVF (vector V/F) and SVC (sensorless vector control) technologies for accurate speed and torque control. Key features include a removable digital keypad, Modbus RTU communication, built-in protection functions, and the ability to operate reliably in ambient temperatures up to 50°C.

Key Features

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

• Power Rating: 400 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/unwinding functions

• Protection: Overcurrent, short circuit, overheat, overload, phase loss, load loss, and external faults

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

• Communication: Modbus RTU support

• Cooling: Forced air cooling

• EMC: Integrated C3 filter

• Protection Class: IP20

• Operating Temperature: Up to 50°C

• Applications: Rewinding, cranes, HVAC, cable manufacturing, production machinery, and other industrial uses