3-Phase VFD Inverter

The SINEE EM730-355-3 is a general-purpose variable frequency drive designed for controlling industrial three-phase AC motors with power up to 355 kW. It supports an input voltage range of 340–460V AC and utilises advanced VVF (vector V/F) and SVC (sensorless vector control) technologies to provide accurate speed and torque control. The inverter features a removable LED keypad, Modbus RTU communication, and built-in comprehensive protection functions to ensure reliable operation in various industrial environments.

Key Features

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

• Power Rating: 355 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 for high-speed motors, rewinding/unwinding

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

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

• Communication: Modbus RTU support

• Cooling: Forced air cooling

• EMC: Built-in C3 filter

• Protection Class: IP20

• Operating Temperature: Up to 50°C

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