Pdf w22 three phase electric motor nema technical

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PDF W22 Three-Phase Electric Motor NEMA Technical

Motors | Automation | Energy | Transmission & Distribution | Coatings
W22
Three-Phase Electric Motor NEMA Technical
Catalog

W22 Line
The increasing demand for electrical energy to sustain global together with the demands for increased energy efficiency,
development requires consistent heavy investments in power WEG has taken up the challenge and produced a new design
supply generation. However, in addition to complex medium of high efficiency motor; one that exceeds the performance
and long term planning, these investments rely on natural of WEG's existing W21 motor line, which is recognised
resources, which are becoming depleted due to constant worldwide for its quality, reliability and efficiency.
pressures upon the environment. The best strategy,
therefore, to maintain energy supply in the short term is to Using the latest generation of computerised tools, such as
avoid wastage and increase energy efficiency. Electric structural analysis software (finite element analysis) and
motors play a major role in this strategy; since around 40% of computer fluid dynamics, as well as electrical design
global energy demand is estimated to be related to electric optimisation software, an innovative - next generation -
motor applications. Consequently, any initiatives to increase product has been developed: the W22 motor.
energy efficiency, by using high efficiency electric motors and
frequency inverters, are to be welcomed, as they can make a Several key objectives have been achieved in the design of
real contribution to reductions in global energy demand. the W22 motor:
g Reduction of noise and vibration levels
At the same time as efficiency initiatives make an impact in g Increased energy efficiency and reduced thermal footprint
traditional market sectors, the application of new g Easy maintenance
technologies in emerging sectors is resulting gCompatibility with present & future generations of
in profound changes in the way that electric motors are frequency inverters
applied and controlled. By integrating these changes gFlexible and modular design
2 W22 Electric Motor

Frame 143T to 215T Frame 254T to 326T
Frame 364/5T to 444/5T Frame 445/7T to 588/9T
Reducing carbon footprint and cutting costs with the W22
W22 range of three-phase induction motors, designed to offer not only significantly lower energy consumption, but lower noise
and vibration, higher reliability, easier maintenance and lower cost of ownership.
Consisting of three products, each designed to exceed the requirements of the NEMA MG 1-2009, the W22 Super Premium
Efficiency, NEMA Premium Efficiency and High Efficiency can reduce energy losses by between 10% and 50% compared with
other typical motors. It's an extremely effective way to reduce your carbon footprint, as well as your energy costs.
W22 motors fully comply with the energy efficiency requirements of the EISA 2007 (Energy Independence and Security Act
2007) from USA and EcoAction from Canada. For more information regarding global efficiency regulations, potential reduction
in CO2 emissions and return on investment of W22 motors, please visit green.
W22 Electric Motor 3

Visual Index
3.1 Frame Page 6
3.2 Eyebolts Page 6
3.4 Earth terminals Page 7
3.5 Terminal box Page 7
3.8 Endshields Page 9
3.10 Fan cover Page 9
3.11 Nameplate Page 9
4.1 Cooling system Page 10
5.1 Shaft Page 11
5.2 Bearings Page 11
7.2 Sealing system Page 13
7.3 Painting Page 13
Table 1 - Visual Index
4 W22 Electric Motor

Table of Contents
1. Versions available................................................................................................................................................................... 6
2. Standards.............................................................................................................................................................................. 6
3. Construction details............................................................................................................................................................... 6
3.1 Frame................................................................................................................................................................................ 6
3.2 Eyebolts............................................................................................................................................................................ 6
3.3 Points for vibration monitoring.......................................................................................................................................... 6
3.4 Earth terminals.................................................................................................................................................................. 7
3.5 Terminal box..................................................................................................................................................................... 7
3.6 Power supply connection leads........................................................................................................................................ 8
3.7 Accessory connection leads............................................................................................................................................. 8
3.8 Endshields........................................................................................................................................................................ 8
3.9 Drains............................................................................................................................................................................... 8
3.10 Fan cover........................................................................................................................................................................ 9
3.11 Nameplate....................................................................................................................................................................... 9
4. Cooling system and Noise level / Vibration level / Impact resistance.................................................................................... 10
4.1 Cooling system and Noise Level..................................................................................................................................... 10
4.2 Vibration level..................................................................................................................................................................10
4.3 Impact resistance............................................................................................................................................................10
5. Shaft / Bearings ...................................................................................................................................................................11
5.1 Shaft............................................................................................................................................................................ 11
5.2 Bearings ...................................................................................................................................................................... 11
5.2.1 Permissible loads...................................................................................................................................................... 12
5.2.2 Bearing monitoring................................................................................................................................................... 12
6. Mounting forms.................................................................................................................................................................... 13
7. Degree of protection / Sealing system / Painting.................................................................................................................. 13
7.1 Degree of protection ...................................................................................................................................................... 13
7.2 Sealing system................................................................................................................................................................ 13
7.3 Painting ......................................................................................................................................................................... 13
7.3.1 Internal anti-corrosive painting.................................................................................................................................. 14
8. Voltage / Frequency ...........................................................................................................................................................14
9. Ambient / Insulation .......................................................................................................................................................... 14
9.1 Space heaters................................................................................................................................................................. 14
10. Motor protection................................................................................................................................................................. 15
10.1 Protection based on operating temperature.................................................................................................................. 15
102 Protection based on operating current........................................................................................................................... 15
11. Variable speed drive application......................................................................................................................................... 16
11.1 Considerations regarding rated voltage ........................................................................................................................... 16
11.2 Torque restrictions on variable speed drive applications .................................................................................................... 16
11.3 Restrictions regarding current flow through the bearings ................................................................................................. 16
11.4 Forced ventilation kit................................................ ................................................................................................... 17
11.5 Encoders....................................................................................................................................................................... 17
12. Construction features.............. ........................................................................................................................................... 18
13. Optional features ........................................................................................................................................................... 20
14. Electrical data ................................................................................................................................................................. 24
15. Mechanical data ............................................................................................................................................................. 32
16. Terminal box drawings..................................................................................................................................................... 35
17. Drip cover data................................................................................................................................................................... 36
18. Distance from fan cover to wall.......................................................................................................................................... 36
19. Packaging..................................................................................................................................................................................................... 37
20. Spare parts........................................................................................................................................................................ 38
W22 Electric Motor 5

1. Versions available
W22 NEMA Motors are available in three versions: W22 The motor feet are completely solid for better mechanical
High Efficiency, NEMA Premium Efficiency and Super strength (figure 2), allowing easier alignment and installation.
Premium Efficiency. These versions are in accordance with
the tables 12-11 and 12-12 from NEMA MG-1.
2. Standards
W22 motors meet the requirements and regulations of the
latest version of the following Standards:
CSA C22.2 No. 100-04 - Motor and Generators
CSA C390 - Test Methods, Marking Requirements and Figure 2 - Solid feet
Energy Efficiency Levels for Three-Phase Induction Motors
IEEE STD 112 - IEEE Standard Test Procedure for Polyphase
Induction Motors and Generators 3.2 Eyebolts
NEMA MG-1 - Motors and Generators Eyebolts are available from frame size 182T. The position of
UL 1004-1 - Rotating Electrical Machines - General the eyebolts are shown in the table 2:
Requirements
Number of
eyebolts
3. Construction details
1
Description
Frames 182T to 326T
Motors with feet and with side mounted terminal box
2
Frames 182T to 444/5T
Motors with feet and with top mounted terminal box
The information included in this document refers to standard 2 Frames 182T to 444/5T - Motors without feet and with C or D flange
construction features and the most common variations for Frames 445/7T to 588/9T - Motors with feet and side or top
W22 motors in low voltage for general applications in frame 2 mounted terminal box. These motors have four threaded holes in the
sizes from 143T to 588/9T. upper part of the frame for fastening of the eyebolts (figure 3)
W22 motors for special and/or customised applications are Frames 445/7T to 588/9T - Motors without feet and with C or D
available on request. For more information, please contact 2
flange. These motors have four threaded holes in the upper part of
your WEG office or distributor. the frame for fastening of the eyebolts and two more threaded holes
in the bottom part
3.1 Frame Table 2: Eyebolts
The W22 frame (figure 1) is manufactured in FC-200 cast iron
to provide high levels of mechanical strength to cater for the
most critical applications. The cooling fins are designed to
minimize the accumulation of liquids and dust over the motor.
Figure 3: Motor with four threaded holes for fastening of the eyebolts
Figure 1 - W22 Frame 3.3 Points for vibration monitoring
To allow easy maintenance, specifically vibration testing, the
254T to 588/9T frames are designed with flat areas on both
ends for better placement of the accelerometer (figure 4).
These areas are available both in vertical and horizontal
planes. Besides areas on the frame, W22 motors count on
flat areas on the endshields for easier installation of
accelerometers.
6 W22 Electric Motor

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