WEG’s W21™ Severe Duty High Efficiency motors are designed to meet or exceed all EPAct requirements for energy efficiency as defined by the DOE. The efficiency values are certified according to the DOE’s regulations (Certificate of Compliance number CC029A). W21™ motors meet the most demanding severe duty application requirements. These TEFC motors are all cast iron construction, with enclosures rated IP55 to handle wet and dirty environments. They are painted with WEG’s own special system, using synthetic enamel alkyd resin paints, which exceed the ASTM B117 standard for salt spray test. The W21™ line is rated for 1.25 Service Factor up to 100HP. This line is rated for dual frequency and dual voltage (with reduced service factor) up to 60 HP. The entire line is certified Inverter Rated for use with a VFD. This rating meets or exceeds MG1 Part 31 NEMA Specifications.
Steel covers on 143T up to 215T frames and cast iron on frames 254T and up.
The bearings are dimensioned to ensure long life to the motor, even under heavy working conditions. Positive pressure lubrication system includes a drain plug that allows the outflow of excess grease on 254T frames up to 586/7.
For easy handling, motors 184T frames and larger are provided with an eyebolt. Footless motors are provided with two eyebolts.
Made of FC-200 cast iron, with external fins for maximum cooling effect.
Stainless steel nameplate contains a complete and permanent record of all motor data (according to NEMA requirements).
Aluminum die cast into a magnetic steel lamination for low electric losses. Dynamically balanced for smooth operation, reduced vibration and noise.
Made of rigid plastic from frames 143T up to 505T and aluminum for frame 586/7. Non sparking, non toxic, resistant to environmental conditions, and ensures low noise operation.
Oversized, cast iron construction. Gasketed lid and between box and frame. NPT threads holes to connect conduit or cable glands.
All copper winding wire enameled with class “H” polyester varnish. Insulating materials of high dielectric rigidity and solvent free polyester resin providing excellent mechanical resistance.
Made of silicon steel laminations thermochemically treated to improve the electric characteristics, reducing electric losses and the operating temperature.
Made of cast iron, with external fins for heat dissipation. They also have polished bearing housings for longer bearing life.
In both endshields to protect bearings and motor from the aggressive components present in the environment.
Provided with automatic drain plug that quickly drains condensation.
High Efficiency motors are designed to meet or exceed all EPAct requirements for energy
efficiency as defined by the DOE. The efficiency values are certified according to the DOE’s
regulations (Certificate of Compliance number CC029A).
These Open Drip Proof (ODP) motors are designed for environments where dirt and moisture are minimal and provide maximum ventilation and heat dissipation. Design B torque and high efficiency design from 143T through 444/5T frames.