WEG W22 IE4 Super-Premium Efficiency Three-Phase Motor

The WEG W22 IE4 Super-Premium Efficiency Three-Phase Motor represents the pinnacle of induction motor efficiency technology, achieving IEC 60034-30-1 IE4 Super-Premium classification across the 7.5 kW to 355 kW power range. The IE4 tier lies above IE3 Premium Efficiency and below the IE5 ultra-premium threshold, delivering measured efficiency values of 95–96.5% at full load in the 37–200 kW range — levels previously associated only with permanent magnet motors. WEG achieves IE4 in an induction motor format by combining vacuum pressure impregnated (VPI) windings with ultra-low-loss premium silicon steel laminations, a precision-optimised air gap, and an aerodynamically refined cooling system that reduces fan windage losses. For Saudi industrial operators facing escalating electricity tariffs and SEC energy audit obligations, the W22 IE4 offers the highest achievable efficiency in a line-start induction motor without the rare-earth supply chain risks associated with permanent magnet designs.

The W22 IE4 motor is manufactured to IEC 60034-1 with efficiency verified by third-party accredited testing to IEC 60034-2-1. The motor uses the same W22 cast iron frame platform as IE2 and IE3 variants, preserving direct dimensional interchangeability for replacement projects. Class H insulation is used on larger frames, with Class B temperature rise maintained through the thermal design improvements, giving an exceptional thermal margin in 50°C ambient conditions. The motor is inherently inverter-compatible per IEC 60034-17, as the improved insulation and winding impregnation used to achieve IE4 losses also provide superior resistance to PWM-induced partial discharge, making the W22 IE4 an ideal pairing with WEG CFW700 or CFW11 variable speed drives on high-duty pump and fan applications in Saudi industrial projects.

For Saudi Arabia's largest energy consumers — ARAMCO, SABIC, SEC, SWCC, and Ma'aden — the IE4 motor's additional efficiency over IE3 generates significant cost reduction at high-duty operating hours. A 37 kW motor operating 6,000 hours per year at the current SEC heavy industrial tariff will recover the price premium of IE4 over IE3 in under 18 months at typical Saudi industrial electricity rates, making the lifecycle financial case compelling for capital expenditure approval. SEEC's top-tier incentive rebates apply to IE4 motor installations, further compressing the payback period. Saudi engineering consultants and EPC contractors designing new facilities to Vision 2030 sustainability benchmarks increasingly specify IE4 as the minimum standard for high-duty motors above 15 kW.

Razz Middle East is one of the few distributors in Saudi Arabia with the technical capability to support IE4 motor application engineering, providing efficiency loss analysis, thermal derating calculations for 50°C ambient, and VFD-motor pairing recommendations. We hold stock of selected W22 IE4 frame sizes and power ratings and arrange factory orders for others with defined lead times. All motors are supplied with individual IE4 test certificates from accredited laboratories, CE declarations, and SEEC rebate documentation support. Contact our Riyadh or Dammam office for SAR pricing and application engineering consultation.