W51 – High Density
WEGINDO / PRODUCTS / ELECTRIC MOTORS / W51 HIGH DENSITY

The W51 HD (High Density) line motors are three-phase asynchronous motors with a squirrel-cage rotor fully enclosed. This line is available in IEC 315 to 450 and equivalent NEMA frame, in low and medium voltage (up to 6,6 kV). Motors above 6,6 kV up to 11 kV can also be supplied upon request.
Application:
Ideal for several industrial application such as compressors, fans, pumps, mills, etc.
More Efficiency:
W51HD motors offer higher output/weight ratio better efficiencies due to low mechanical losses with compact and robust frames.
Optimized Cooling System:|
High thermal exchange due to optimization of the motors cooling systems and D.E. end shields innovative design.
Customizable:
Flexibility in terminal boxes positioning, in the foundation holes and shaft dimensions. Quick and easy modifications, wide range of options and accessories.
Even More Reliable:
Lower vibration levels and bearing operating temperature, suitable for variable speed drive operation.
Tailored for maximum performance

WISE® WEG Insulation System Evolution
The WEG, WISE® insulation system (WEG Insulation System Evolution) has resulted from using enhanced insulation materials during the production of the electric motor insulation.
The WISE® (WEG Insulation System Evolution) is an advanced motor insulation technology developed by WEG to enhance performance, particularly in demanding applications such as those using Variable Frequency Drives (VFDs) or Variable Speed Drives (VSDs).
| Standard Features | Descriptions |
|---|---|
| Power output | : 75 up to 1250 kW |
| Poles | : 2 up to 12 |
| Voltage | : 380 – 6,600 V |
| Frequency | : 50 or 60 Hz |
| Frame size | : 315 G/F to 450 H/G |
| Protection | : IP55 |
| Mounting | : IMB3 (foot mounting) |
| Insulation class | : F (155 °C) |
| Temp. rise class | : B (80K) |
| Cooling system | : IC411 (TEFC) |
| Duty cycle | : S1 (continuous) |
| Service factor | : 1.00 |
| Finish color | : RAL 5009 |
| Optional Features |
|---|
| – Rotor material: Aluminium or Copper bar |
| – Flange: FF or C flange |
| – Fan material: Aluminium, Bronze, Steel |
| – Bearings: Roller or Sleeve bearings |
| – Protection up to IP66 |
| – Drip cover (canopy) for vertical shaft down application |
| – Insulation class H DT 105K |
| – Encoder |
| – Shaft grounding brush |
| – Insulated bearing or end shield |
| – Force ventilation for VFD application |

| English Version File .Pdf |
|---|
| W51 HD – European Market – Technical Catalogue |
| W51 HD – American Market – Technical Catalogue |
| Installation, Operation and Maintenance Manual |
