Detailed Description

The POWTRAN PI550 055G3 is a high-performance industrial three-phase to three-phase vector-control frequency inverter designed to supply a 55 kW motor with variable speed and precise torque control. It is ideal for demanding applications such as pumps, fans, conveyors, mixers, compressors and other heavy-duty equipment.

Key Specifications & Features

• Brand: POWTRAN

• Model: PI550 Series, variant 055G3 (≈ 55 kW) 

• Rated Output Power: ~ 55 kW

• Input Voltage: AC 3-phase 380 V (–15%) up to 440 V (+10%) 

• Input / Output: Three-phase input and three-phase output

• Control Method: True vector control (DSP-based) plus V/F control fallback 

• Built-in functions: PID regulator, multi-speed, high-speed pulse output (0-100 kHz), RS-485/Modbus interface options 

• Environment / Derating: Standard specs show –10 °C to +40 °C ambient; above 40 °C derating applies.

• Use Case: Suitable for heavy-duty industrial motor speed/torque control where a 55 kW rating is required

Installation & Usage Notes

• Ensure proper ventilation and cooling as per manufacturer’s manual to maintain thermal performance.

• Verify that supply is stable within the specified range 380-440 V and phase balance is within ±3% to avoid derating. 

• Program motor parameters accurately (voltage, current, pole count) to utilize full vector performance.

• Use shielded motor cable and proper grounding to mitigate EMI and leakage current issues.

• For high ambient temperature or altitude, check manual for derating instructions and possible requirement for external cooling or larger frame.