Weg - mdi

W22 Super Premium

High performance with maximum energy efficiency is the goal of the new WEG electric motor. High efficiency and low cost of ownership throughout the entire motor lifetime have been the basis for the W22 development. A design created to maximize performance and energy savings.

WEG’s W22 cast iron platform has an improved cooling system and solid feet for cooler operation and reduced vibration and noise, extending the life of the motor.


Download the PDF Catalog of these pages to view, print or send to your engineers.

Three-Phase TEFC Motor

W22 Super Premium

High performance with maximum energy efficiency is the goal of the W22 electric motor. High efficiency and low cost of ownership throughout the entire motor lifetime have been the basis for the W22 development. A design created to maximize performance and energy savings.

New Cooling System

Designed to provide optimized air flow through all motor frames keeping low operational temperatures and assuring reliability and extended lifetime. The  aerodynamic design of the fan cover optimizes effective airflow, thus minimizing losses due to the recirculation of air between fan and fan cover. The fan was designed to provide strength and reduced noise level. Motor terminal box and eyebolts are positioned on larger frames to allow better airflow.
The new W22 cooling system also contributes to:

  • Cooler bearing temperature extending re-lubrication intervals
  • Lower noise level fulfilling the most demanding health and safety regulations
  • Lower overall operational temperature resulting in longer life
WEG Motors New Cooling System

Terminal Box

WEG Motors Terminal Box
  • Large internal space making connections more accessible to the user resulting in an easier cable handling and connection
  • Terminal box can be mounted on top, left or right side of the motor using the same frame on the 447T and larger motors. Top mounting is optional on smaller frames.

Exclusive Bearing Sealing System

Extends motor lifetime when operating in aggressive environments by protecting the motor against water and dust guaranteeing proper degree of protection.

WEG Motors Exclusive Bearings Sealing System

Frame

WEG Motors Body

Motor feet are solid providing a highly resistant structure against vibration. The frame design has points that can be used as provisions for vibration sensors as a standard feature:

Benefits from the new frame design:

  • Motor temperature reduction
  • Eyebolts positioned for easy handling in the application
  • Provision for vibration sensors - frame and endshields with provisions 90° displaced according to maintenance technical recommendations. Easier and more reliable vibration analysis.
  • Solid feet - enhanced reliability when operating on high vibration applications and also provide easier alignment on installation

Typical Applications

  • Pumps
  • Fans
  • Crushers
  • Conveyor belts
  • Mills
  • Centrifugal machines
  • Presses
  • Elevators
  • Packaging equipment
  • Grinders and others

Standard Features

  • Efficiency certification number CC029A according to US Department of Energy regulations
  • Three-phase, 2, 4 and 6 poles, 60 Hz
  • Rated output - 1 to 250 HP
  • Frame sizes - 143T to 447/9T
  • Voltage - 208-230/460 V
  • No derating for 50 Hz operation up to 250 HP - for 300 HP and up, please contact our sales office
  • Totally enclosed fan cooled - TEFC (IP55) water tight and dust tight enclosure
  • Squirrel cage rotor/aluminum die cast
  • WSeal® sealing on both endshields from frame 364T/5T up to 504/5T (586/7 frame fitted with Taconite labyrinth as standard)
  • Ball bearings are supplied as standard
  • 1040/45 heat treated and stress relieved carbon steel shafts (4140 for 404/5T upwards in 4, 6 and 8 pole motors)
  • Class F (DT 80K) insulation for all frames
  • Continuous flow insulation system with Class H wire (364/5T and larger)
  • WEG submerged and bake system with Class H wire  (324T and smaller)
  • Temperature rise limited to Class B (80K) @FL
  • NEMA ratings design A
  • Service factor: 1.25
  • Continuous duty (S1)
  • 104ºF (40ºC) ambient temperature
  • Altitude: 3300 ft (1000m)
  • NPT threaded terminal box
  • Stainless steel nameplate AISI 316 with laser etching
  • Paint - synthetic enamel alkyd resin base (240 hours minimum ASTM B117 salt spray test)
  • Color - RAL 6002 – green
  • Fitted with closed rubber drain plug (automatic drain when open)
  • Regreasable bearings, with grease fittings in DE and NDE bearings (254T and larger)
  • Gasketed conduit box
  • Class I, Div. 2, Groups A, B, C & D:
    • T3 for 1.25 SF motors up to and including 404/5T frames
    • T3 for 1.15 SF motors up to and including L449T frames
    • T2C for 1.15 SF motors on 586/7
    • T2B for 1.0 SF motors on frames L449T and larger
    • These temperature codes are not valid for motors operating with VFD and/or with installed space heaters
  • Class II, Div. 2, Groups F & G:
    • T5 for 1.25 SF motors up to and including 184T frames
    • T4 for 1.25 SF motors from 213T up to and including 404/5 frames
    • T3C for 1.15 SF motors up to and including 586/7 frames
    • T4 for 1.0 SF motors on frames L449T, 586/7 and 588/9
    • These temperature codes are not valid for motors operating with VFD and/or with installed space heaters
  • MGI Part 31 rating for use with VFD - 20:1 constant torque speed range up to 250 HP. Speed range with constant torque can be extended with optional blower kit.

Optional features

  • Special voltages
  • Specially designed shaft
  • Threaded NDE shaft side for encoder assembly
  • Space heaters (standard on 586/7 frames)
  • Labyrinth Tachonite seal available for all ratings
  • Thermostats or RTD's (Pt-100)
  • Additional terminal box
  • Drip cover (canopy) for shaft down applications
  • Cable glands
  • C-face and NEMA D flanges for all ratings
  • C-face fan cover for accessories or double C-face mounting
  • Roller bearing models available
  • Special epoxy painting

The mdi Sales Team is standing by to help you with your order or questions about the Weg Product Line. Give mdi a Call Today!

We are available via phone Monday - Friday, 7:30 AM to 6:30 PM EST, including most holidays. Call 727-835-0663 or Email, we'd love to help!

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