W22 MotorsMotors Business Unit

**The W22 series is the WEG answer to the global trends of electric motors regarding: Noise and Vibration levels reduction;

Energy and thermal exchange efficiency;

Easy maintenance;

Growth of variable speed applications with Frequency Inverters;

Versatility;

Operational costs reduction and productivity increase.

W22 The new concept of electric motors

**Basic standard features

Three-phase Induction, TEFC, cast iron frame motors; Efficiency levels: IE1, IE2 and IE3 according to IEC 60034-30*;Rated Output: 0,12 to 500 kW;Number of poles: 2, 4, 6, 8, 10 and 12 (including multi-speed motors);Frame sizes: 63 to 355A/B;Degree of protection: IP55;Insulation class F, class B temperature rise;Thermistors PTC on windings for tripping at 155C for frames 160 to 355;Grease nipples for frames 225 to 355.

*When applicable.W22 The new concept of electric motors

W22 Internal view

W22 Designed with high tech toolsAnsys Mechanical AnalysisMotor CADThermal AnalysisFEA Analysis

W22 Efficiency Levels

WISE Insulation SystemW22 motors are fitted with WISE insulation (WEG Insulation System Evolution) which permits them to operate driven by VFD. The WISE is a system composed of: class Hinsulation wire (200C), enhanced insulation materials and a solvent-free resin.

High performance designNew lamination design (stator and rotor design)Aluminum squirrel cage die cast rotor

WEG Optimal Flux SolutionW22 IE2 and IE3 motors fed by WEG CFW11 frequency inverters can operate in low speed with constant torque without the need for forced ventilationW22 Electrical design Low Voltage

W22 Frame

W22 Frame

W22 Frame

W22 Ventilation SystemProvides outstanding heat dissipation, allowing for reduced operating temperatures that do not push the insulation material to its limits, provinding extended lifetime.

W22 Ventilation System Fan

W22 Ventilation System Fan Cover

W22 Terminal box

W22 Drive endshield

W22 Non-drive endshield

W22 Efficient lubrication systemGrease inlet and outlet channelsdeveloped to improve the grease passages to and from themotor bearings.

W22 Sealing systemThis metallic cap provides additional UV and mechanical protection.W22 motors in frame sizes 63 to 200 are equipped with the already recognized Vring seal.

W22 Drain

W22 Extended Range New Frame SizesIn the W22 range WEG is introducing two new frames: 315L and 355A/B.With these new frames, the standard output offerings were distributed to accommodate 315L, 355M/L and 355A/B. In the table (right) 2 and 4 pole limits(*) are shown:(*) This limit corresponds to TEFC standard range. Tailor-made motors can reach higher outputs.

Frame3000 rpm1500 rpm315LUp to 315 kWUp to 315 kW355M/LUp to 355 kWUp to 400 kW355A/BUp to 450 kWUp to 500 kW

W22 Extended Range High Voltage MotorsAdditional terminal box supplied as standardMain terminal box supplied with increased internal volumeHigh voltage coils manufactured with flat copper wires and VPI impregnatedHigh voltage terminal block

W22 High Voltage Motors insulation system consists mainly in:

Rectangular bare copper wire with 2 or 3 mica tapes (used in respect of the applied voltage) Coil main insulation with mica tapes Straight part of coil with conductive tape for voltages above 4160V Coil heads mechanical protection with polyester shrinking tape VPI system with polyesterimide resin of class H typeW22 Electrical design High Voltage

**Thank you!

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