WEG W22 355M 132kW 6-Pole IE3 Motor

The WEG W22 355M 132kW 6-Pole IE3 motor delivers reliable, high-efficiency power for applications requiring moderate speed and high torque in Saudi Arabia's industrial sector. Operating at 985 RPM on a 50Hz supply, this motor is optimized for direct-coupled pump and fan drives where reduced speed eliminates the need for gearboxes, lowering capital and maintenance costs significantly for facilities managed by Saudi Aramco, SABIC, Marafiq, and other major GCC industrial operators.

The 6-pole configuration of the W22 355M provides inherently lower noise levels compared to 4-pole equivalents—a critical specification for facilities near residential areas in Yanbu Industrial City and Jubail Industrial City where environmental noise regulations are increasingly enforced by the Royal Commission for Jubail and Yanbu (RCJY). Typical no-load noise levels are 3–4 dB(A) lower than equivalent 4-pole motors, supporting environmental compliance requirements.

WEG's continuous investment in motor efficiency technology is evident in the W22 series' winding design. The 6-pole W22 355M achieves IE3 efficiency of 95.8% at full load through the use of optimized copper winding wire cross-sections, precision-wound coils with reduced end-winding length, and low-loss electrical steel laminations with controlled silicon content. These design features collectively reduce electrical losses (copper losses + iron losses + stray losses) compared to IE1 baseline motors by over 35%.

For Saudi petrochemical applications, this motor is commonly deployed on cooling water circulation pumps at SABIC's ethylene and methanol complexes in Al-Jubail, seawater lift pumps at desalination facilities, and air compressor drives in general industrial applications. The lower operating speed of 985 RPM reduces bearing wear rates, extends seal life in pump applications, and typically reduces operational vibration levels—important considerations for long-term asset reliability programs at facilities following ARAMCO's SAEP-302 predictive maintenance guidelines.

The W22 355M frame incorporates WEG's Smart Series features including integral vibration monitoring ports compatible with SKF CMSS and Emerson CSI sensor systems. This allows installation of wireless vibration transmitters for continuous condition monitoring integration with plant DCS/SCADA systems—a capability increasingly required by Saudi Aramco Inspection Department under the asset health management program.

Thermal protection is provided as standard through Pt100 resistance temperature detectors (RTDs) embedded in the stator windings, with 6 RTDs total (2 per phase) providing comprehensive thermal monitoring. Additional Pt100 sensors for bearing temperature monitoring are available as factory-fitted options. These features integrate directly with Siemens, ABB, and Schneider Electric motor protection relays commonly deployed in Saudi industrial switchgear.

The motor's vibration performance meets ISO 10816-3 Grade A limits for smooth vibration levels below 1.8 mm/s RMS at rated speed, ensuring compatibility with precision-aligned pump and compressor trains. Factory dynamic balancing is performed to G2.5 quality grade as standard, with G1.0 available for high-speed or precision applications.