3-Phase VFD Inverter

The SINEE EM730-280-3 is a high-reliability general-purpose variable frequency drive designed for controlling three-phase AC motors up to 280 kW. It supports a three-phase input voltage from 340 to 460V AC and uses advanced vector control technology, including VVF (vector V/F) and SVC (sensorless vector control) for precise speed and torque regulation. It features a removable LED keypad, Modbus RTU communication, comprehensive protection mechanisms, and reliable operation 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: 280 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, overheating, overload, phase loss, load loss, external fault protection

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