W22

Three-Phase Electric Motor

Motors | Automation | Energy | Transmission & Distribution | Coatings

Technical Catalogue

European Market

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W22 Electric Motor2

The WEG W22 is what the industrial world needs today, to help sustain its future - tomorrow.

Visit www.weg22ways.net to ﬁnd out more.

Lifespan booklet

Call: 0800 862 0375 Email: 22ways-europe@weg.net

W22 Line - High Efﬁciency Motors

The increasing demand for electrical energy to sustain global

development requires consistent heavy investments in power

supply generation. However, in addition to complex medium

and long term planning, these investments rely on natural

resources, which are becoming depleted due to constant

pressures upon the environment. The best strategy,

therefore, to maintain energy supply in the short term is to

avoid wastage and increase energy efﬁciency. Electric

motors play a major role in this strategy; since around 40% of

global energy demand is estimated to be related to electric

motor applications. Consequently, any initiatives to increase

energy efﬁciency, by using high efﬁciency electric motors and

frequency inverters, are to be welcomed, as they can make a

real contribution to reductions in global energy demand.

At the same time as efﬁciency initiatives make an impact in

traditional market sectors, the application of new

technologies in emerging sectors is resulting

in profound changes in the way that electric motors are

applied and controlled. By integrating these changes

together with the demands for increased energy efﬁciency,

WEG has taken up the challenge and produced a new design

of high efﬁciency motor; one that exceeds the performance

of WEG’s existing W21 motor line, which is recognised

worldwide for its quality, reliability and efﬁciency.

Using the latest generation of computerised tools, such as

structural analysis software (ﬁnite element analysis) and

computer ﬂuid dynamics, as well as electrical design

optimisation software, an innovative - next generation -

product has been developed: the W22 motor.

Several key objectives have been achieved in the design of

the W22 motor:

Reduction of noise and vibration levels

Increased energy efﬁciency and reduced thermal footprint

Easy maintenance

Compatibility with present & future generations of

frequency inverters

Flexible and modular design

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W22 Electric Motor 3

Frame 63 to 132 Frame 160 to 200 Frame 160 to 355

...we call it WEGnology

Sustainability and Carbon Emission reduction through

Premium Efﬁciency Motors

The Premium Efﬁciency (IE3) level established in IEC 60034-

30: 2008 is considered the highest efﬁciency class which a

squirrel cage induction motor can achieve whilst remaining

economically viable.

It is also the optimum solution to increase the efﬁciency of an

existing application through direct replacement.

So, why have Premium Efﬁciency motors not become the

Industry standard?

It may be argued that premium efﬁciency motors are also

premium in price when comparing against standard

efﬁciency (IE1) and high efﬁciency (IE2) motors.

Whilst this is not strictly untrue, it should be appreciated

when considering their lifetime that the cost of acquisition

typically represents only 1% of the total cost of ownership of

an electric motor. In contrast, the associated energy savings

provided by premium efﬁciency motors far outweigh this

additional investment in purchase price.

The reduction in CO

emissions is one of the direct

consequences, and therefore beneﬁts, of increasing

efﬁciency in industry.

For example, according to the guidelines set out by the

International Energy Agency (IEA) of 504 kg of CO

per

1,000kWh, it is possible to reduce CO

emissions by

approximately 1,000 kg per year with one 3 kW premium

efﬁciency motor and by 25,000 kg per year with a 250 kW

premium efﬁciency motor, when compared against equivalent

standard efﬁciency (IE1) machines.

Go to our website at www.weg.net to check the potential

reduction in CO

emissions and the return on investment of

W22 Premium Efﬁciency motors.

The W22 line from WEG is the ﬁrst complete range of IE3

motors available to Industry...

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W22 Electric Motor4

Minimum Energy Performance Standards - Europe

Increasingly, the World seeks a path of sustainability and new

ways to reduce energy consumption.

A signiﬁcant percentage of the electrical energy utilized in

facilities around the World is consumed by electric motors.

Consequently, Governments around the World are

implementing Energy Efﬁciency Programs in order to enforce

the use of high efﬁciency motors.

Up until 2009, Europe did not have any speciﬁc regulations

relating to the energy efﬁciency levels of electric motors.

There existed only a voluntary agreement between

Manufacturers from 1998 that determined the well known

efﬁciency bands EFF1, EFF2 and EFF3.

However, in July of 2009 the European Community

introduced the regulation 640/2009 (implementing Directive

2005/32/EC) relating to the scope of supply, implementation

dates and efﬁciency levels of electric motors sold in the

European market. This directive bases the efﬁciency levels on

the values stipulated in IEC 60034-30.

Scope

The Scope of the European Ecodesign Directive covers

single speed, three-phase 50 Hz or 50/60 Hz, squirrel cage

induction motors that:

g 

have 2 to 6 poles

g 

have a rated voltage U

up to 1.000 V

g 

have a rated output P

between 0.75 kW and 375 kW

g 

are rated on the basis of continuous duty operation

Effective dates

g 

from 16 June 2011, motors shall not be less efﬁcient than

the IE2 efﬁciency level (deﬁned in Table 1);

g 

from 1 January 2015 motors with a rated output of

7.5-375 kW shall not be less efﬁcient than the IE3 efﬁciency

level (deﬁned in Table 1) or meet the IE2 efﬁciency level and

be equipped with a variable speed drive;

g 

from 1 January 2017 all motors with a rated output of

0.75-375 kW shall not be less efﬁcient than the IE3

efﬁciency level or meet the IE2 efﬁciency level and be

equipped with a variable speed drive.

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W22 Electric Motor 5

Output

IE1 - Standard Efﬁciency IE2 - High Efﬁciency IE3 - Premium Efﬁciency

Poles Poles Poles

kW 2 4 6 2 4 6 2 4 6

0.75 72.1 72.1 70.0 77.4 79.6 75.9 80.7 82.5 78.9

1.1 75.0 75.0 72.9 79.6 81.4 78.1 82.7 84.1 81.0

1.5 77.2 77.2 75.2 81.3 82.8 79.8 84.2 85.3 82.5

2.2 79.7 79.7 77.7 83.2 84.3 81.8 85.9 86.7 84.3

3 81.5 81.5 79.7 84.6 85.5 83.3 87.1 87.7 85.6

4 83.1 83.1 81.4 85.8 86.6 84.6 88.1 88.6 86.8

5.5 84.7 84.7 83.1 87.0 87.7 86.0 89.2 89.6 88.0

7.5 86.0 86.0 84.7 88.1 88.7 87.2 90.1 90.4 89.1

11 87.6 87.6 86.4 89.4 89.8 88.7 91.2 91.4 90.3

15 88.7 88.7 87.7 90.3 90.6 89.7 91.9 92.1 91.2

18.5 89.3 89.3 88.6 90.9 91.2 90.4 92.4 92.6 91.7

22 89.9 89.9 89.2 91.3 91.6 90.9 92.7 93.0 92.2

30 90.7 90.7 90.2 92.0 92.3 91.7 93.3 93.6 92.9

37 91.2 91.2 90.8 92.5 92.7 92.2 93.7 93.9 93.3

45 91.7 91.7 91.4 92.9 93.1 92.7 94.0 94.2 93.7

55 92.1 92.1 91.9 93.2 93.5 93.1 94.3 94.6 94.1

75 92.7 92.7 92.6 93.8 94.0 93.7 94.7 95.0 94.6

90 93.0 93.0 92.9 94.1 94.2 94.0 95.0 95.2 94.9

110 93.3 93.3 93.3 94.3 94.5 94.3 95.2 95.4 95.1

132 93.5 93.5 93.5 94.6 94.7 94.6 95.4 95.6 95.4

160 93.8 93.8 93.8 94.8 94.9 94.8 95.6 95.8 95.6

200 up to 375 94.0 94.0 94.0 95.0 95.1 95.0 95.8 96.0 95.8

WEG can support the movement towards these high efﬁciency levels by offering a comprehensive range of products

that exceed the IE2 and IE3 criteria detailed above. Additionally our variable speed drives are perfectly matched to our

motors, affording you the the most reliable package of motor / drive products in industry.

To learn more about WEG, our products and the new Global Directives, go to www.weg.net or www.weg.net/green

Table 1 - Efﬁciency levels

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W22 Electric Motor6

Visual Index

Table 2 - Visual Index

3.1 Frame Page 9

3.2 Eyebolts Page 10

3.4 Earth terminals Page 10

3.5 Terminal box Page 10

3.8 Endshields Page 12

3.10 Fan cover Page 12

3.11 Nameplate Page 12

4.1 Cooling system Page 13

5.1 Shaft Page 14

5.2 Bearings Page 14

7.2 Sealing system Page 19

7.3 Painting Page 19

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W22 Electric Motor 7

Table of Contents

1. Versions available ....................................................................................................................................................................8

2. Standards ...............................................................................................................................................................................9

3. Construction details ................................................................................................................................................................9

3.1 Frame ...............................................................................................................................................................................9

3.2 Eyebolts .........................................................................................................................................................................10

3.3 Points for vibration monitoring ........................................................................................................................................10

3.4 Earth terminals ...............................................................................................................................................................10

3.5 Terminal box ...................................................................................................................................................................10

3.6 Power supply connection leads ...................................................................................................................................... 11

3.7 Accessory connection leads ........................................................................................................................................... 11

3.8 Endshields ......................................................................................................................................................................12

3.9 Drains ............................................................................................................................................................................. 12

3.10 Fan cover ...................................................................................................................................................................... 12

3.11 Nameplate ....................................................................................................................................................................12

4. Cooling system and Noise level / Vibration level / Impact resistance ..................................................................................... 13

4.1 Cooling system and Noise Level .....................................................................................................................................13

4.2 Vibration level……………….………………………………………...…………….………......................................................................14

4.3 Impact resistance………….………………………………………...…………….………...................................................................... 14

5. Shaft / Bearings ..................………………………….………………………………………………............................................................ . 14

5.1 Shaft……………………….…………………………………………………………………..................................................................... 14

5.2 Bearings ……………………….……………………………………………………………..................................................................... 14

5.2.1 Permissible loads ..................................................................................................................................................... 15

5.2.2 Bearing monitoring .................................................................................................................................................. 18

6. Mounting forms .....................................................................................................................................................................18

7. Degree of protection / Sealing system / Painting ................................................................................................................... 18

7.1 Degree of protection ………………………….…………………………………….………................................................................... 18

7.2 Sealing system…………….…………………………………………………….……............................................................................. 19

7.3 Painting ……………………….………………………………………………….……............................................................................. 19

7.3.1 Tropicalized painting .................................................................................................................................................19

8. Voltage / Frequency ………………………….………………………………………………….................................................................. ..19

9. Overload capacity .................................................................................................................................................................20

10. Ambient / Insulation ………………………….………………………………………………….…........................................................... ..20

10.1 Space heaters ...............................................................................................................................................................20

11. Motor protection ..................................................................................................................................................................20

11.1 Protection based on operating temperature ..................................................................................................................20

11.2 Protection based on operating current ..........................................................................................................................21

12. Variable speed drive application ..........................................................................................................................................21

12.1 Considerations regarding voltage spikes and the insulation system ………...….......................................................................21

12.2 Inﬂuence of the VSD on the motor temperature………………….………………………...….......................................................21

12.3 Considerations regarding bearing currents…………………….……….........................................................................................23

12.4 Forced ventilation kit……………….………………………...…………………………….…..............................................................23

12.5 Encoders ......................................................................................................................................................................23

13. Tolerances for electrical data ………………………….………………………………………................................................................ .23

14. Standard features ………………………….………………………………………………….................................................................... ..24

15. Optional features ………………………….…………………………………………………….................................................................. .26

16. Electrical data …………………….……………………………………………………………................................................................... ..34

17. Mechanical data …………………….…………………………………………………………................................................................... ..66

18. Terminal box drawings………………….…………………………………………………………............................................................. .70

19. Drip cover data ....................................................................................................................................................................71

20. Packaging ......................................................................................................................................................................................................72

21. Spare parts.......................................................................................................................................................................... 74

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W22 Electric Motor8

1. Versions available

For the European market, W22 motors are available in three versions in accordance with IEC 60034-30: 2008: Standard

Efﬁciency (IE1), High Efﬁciency (IE2) and Premium Efﬁciency (IE3). In ﬁgure 1 the efﬁciency levels of W22 motors at 50 Hz can

be compared with the minimum levels established by IEC 60034-30.

Figure 1 - Efﬁciency levels

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W22 Electric Motor 9

2. Standards

W22 motors meet the requirements and regulations of the

latest version of the following Standards:

IEC 60034-1 Rotating electrical machines - Part 1: Rating

and performance.

IEC 60034-2-1 Rotating electrical machines - Part 2-1:

Standard methods for determining losses and efﬁciency from

tests (excluding machines for traction vehicles).

IEC 60034-5 Rotating electrical machines - Part 5: Degrees

of protection provided by the integral design of rotating

electrical machines (IP code) - classiﬁcation.

IEC 60034-6 Rotating electrical machines - Part 6: Methods

of cooling (IC code).

IEC 60034-7 Rotating electrical machines - Part 7:

Classiﬁcation of types of enclosures and mounting

arrangements (IM code).

IEC 60034-8 Rotating electrical machines - Part 8: Terminal

markings and direction of rotation.

IEC 60034-9 Rotating electrical machines - Part 9: Noise

limits.

IEC 60034-11-1 Rotating electrical machines - Part 11-1:

Thermal protection.

IEC 60034-12 Rotating electrical machines - Part 12: Starting

performance of single-speed three-phase cage induction

motors.

For all three efﬁciency levels the W22 motors exceed the

minimum ﬁgures required by the Standard. They are fully

tested and have their efﬁciency ﬁgures declared in

accordance with IEC 60034-2-1: 2007 Standard with

stray load losses directly determined by summation of

losses.

Premium Efﬁciency motors have the output versus frame ratio

as per EN 50347 Standard, allowing replacement of existing

EFF2 and EFF1 motors with Premium Efﬁciency units.

Another characteristic of the electrical design of the W22 line

is that it was conceived so that its efﬁciency remains

practically constant in the 75% to 100% load range.

Therefore, even when the motor does not run at full

load its efﬁciency is not considerably affected (see ﬁgure 2),

resulting in high levels of energy efﬁciency.

Figure 2 - Typical efﬁciency curve of W22 line

3. Construction details

The information included in this document refers to standard

construction features and the most common variations for

W22 motors in low voltage for general applications in frame

sizes from IEC 63 to 355A/B.

W22 motors for special and/or customised applications are

available on request. For more information, please contact

your WEG ofﬁce or distributor.

3.1 Frame

The W22 frame (ﬁgure 3) 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.

IEC 60034-14 Rotating electrical machines - Part 14:

Mechanical vibration of certain machines - Limits of vibration.

IEC 60034-30 Rotating electrical machines - Part 30:

Efﬁciency classes for single-speed three-phase cage

induction motors.

IEC 60072-1 Dimensions and output series for rotating

electrical machines - Part 1: Frame numbers 56 to 400 and

ﬂange numbers 55 to 1080.

Figure 3 - W22 Frame

The motor feet are completely solid for better mechanical

strength (ﬁgure 4), allowing easier alignment and installation.

Figure 4 - Solid feet

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W22 Electric Motor10

3.5 Terminal box

The terminal box of W22 motors is made with FC-200 cast

iron, which is the same material used to produce the frame

and endshields. It is diagonally split for easier handling of

leads and connections.

It is possible to supply 355A/B motors with an oversized

terminal box. In this case, the aspect of the motor with side

and top mounted terminal box is shown in the ﬁgures 9.1 and

9.2.

Figure 9.1 and 9.2 - Frame size 355A/B with oversized terminal box

3.4 Earth terminals

All frames from 63 to 355A/B are provided with two earth

terminals located inside and adjacent to the terminal box (see

ﬁgure 7).

Figure 7 - Earth terminals in the terminal box

For frames 225S/M to 355A/B, two additional earth terminals

on each side of the frame are provided to equalize electrical

potential and provide greater safety for operators (ﬁgure 8).

Figure 8 - Earth terminals position in the frame

3.3 Points for vibration monitoring

To allow easy maintenance, speciﬁcally vibration testing, the

160 to 355 frames are designed with ﬂat areas on both ends

for better placement of the accelerometer (ﬁgure 6).

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.

As an option M8 threads for SPM accelerometers can be

supplied.

Figure 6 - Flat surfaces for vibration monitoring on the back and front side

3.2 Eyebolts

Eyebolts are available from frame size 100L. The position of

the eyebolts are shown in the table 3:

Table 3: Eyebolts

Number of

eyebolts

Description

Frames 100L to 200L

Motors with feet and with side mounted terminal box

Frames 100L to 200L

Motors with feet and with top mounted terminal box

2 Frames 100L to 200L - Motors without feet and with C or FF ﬂange

Frames 225S/M to 355A/B - Motors with feet and side or top

mounted terminal box. These motors have four threaded holes in the

upper part of the frame for fastening of the eyebolts (ﬁgure 5)

Frames 225S/M to 355A/B - Motors without feet and with C or FF

ﬂange. These motors have four threaded holes in the upper part of

the frame for fastening of the eyebolts and two more threaded holes

in the bottom part

Figure 5: Motor with four threaded holes for fastening

of the eyebolts

Front side

Point 1 Point 2

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W22 Electric Motor 11

For frame sizes 225S/M to 355A/B the terminal box is

positioned towards the drive end of the motor and on top as

standard.

This arrangement allows improvement of the airﬂow over the

cooling ﬁns, thus reducing motor operating temperatures.

Terminal box position on either the left or right hand side of

the motor is possible through the use of an adaptor (see

ﬁgure 10).

Figure 10 - Terminal box mounted on the left side viewing from shaft end

When supplied from the factory with a side mounted terminal

box arrangement, this can be positioned on the opposite side

simply by rotating the adaptor.

Similarly, by removing the adaptor and adjusting the length of

the motor leads, the terminal box can be positioned on top of

the motor.

The ﬂexibility of terminal box positions on the W22 motor

offered by the adaptor can be seen in ﬁgure 11.

Figure 11 - Terminal box mounted on both sides and on top (versatility)

Conversely, factory supplied motors with the terminal box

position on top can be modiﬁed to side mounting by ﬁtting

the adaptor and extending the motor leads.

For the frame size range 63 to 200 the terminal box position

is centralized on the motor frame and can be supplied in two

conﬁgurations - top (standard) or left / right side (optional). A

motor with a side mounted terminal box (B3R or B3L) can

have the terminal box position located on the opposite side

through modiﬁcation.

Please Note: For all terminal box position modiﬁcations

please contact WEG or your local WEG service centre.

For all frames, the terminal box can be rotated in 90°

increments. Motors in IEC frame sizes 315L, 355M/L and

355A/B are supplied with removable cast iron cable gland

plates. As an option, the gland plates can be supplied

undrilled.

Motors are supplied with plastic threaded plugs in the cable

entries to maintain the degree of protection during transport

and storage.

In order to guarantee the degree of protection, cable entries

must comply with at least the same degree of protection

indicated on the motor nameplate. Lack of compliance with

such detail can invalidate the motor warranty. If required,

please contact the WEG Service Area for further advice.

3.6 Power supply connection leads

Motor power supply leads are marked in accordance with

IEC 60034-8 and are connected to a terminal block made

from a polyester based resin BMC (Bulk Moulding

Compound), duly reinforced with ﬁbre glass (see ﬁgure 12).

Figure 12: Six-pin terminal block

Motors 355A/B are provided with the terminal block as

shown in the ﬁgure 13.

Figure 13: 355A/B terminal block

3.7 Accessory connection leads

Accessory terminals are assembled on connectors whenever

the motor is supplied with a terminal block. They may be

assembled inside the main power terminal box or in a

separate accessory terminal box (ﬁgure 14).

Whether the accessory terminals are assembled inside the

main power or a separate terminal box, an M20 x 1.5

threaded hole is provided for ﬁtting of cable glands for the

incoming connection leads.

In the Mechanical Data section of this catalogue it is possible

to check the quantity of connectors that may be assembled

inside the main power and accessory terminal boxes.

Figure 14: Accessory terminal box attached to power terminal box

For frames 132 to 355, there is also the option of providing a

dedicated terminal box for the connection of space heaters

as shown in ﬁgure 15.

Figure 15: Two accessory terminal boxes attached to power terminal box

Adapting device

Space

heater box

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W22 Electric Motor12

3.8 Endshields

The drive end endshield (ﬁgure 16) is designed with ﬁns for

better thermal heat dissipation, and to ensure low bearing

operating temperatures, resulting in extended lubrication

intervals.

For the frames 225S/M to 355A/B, where ventilation is critical

for thermal performance of the motor, the endshield fastening

screws are placed in such a way so as not to block airﬂow to

any ﬁn, thus contributing to better thermal exchange.

3.9 Drains

The endshields have holes for drainage of water that may

condense inside of the frame. These holes are supplied with

rubber drain plugs, in accordance with ﬁgure 17 for frame

range 160 to 355. These plugs leave the factory in the closed

position and must be opened periodically to allow the exit of

condensed water. In the 63 to 132 frame range, plugs are

automatic and made of plastic.

Figure 17: Detail of the drain plug position on drive endshield (160-355)

3.10 Fan cover

The fan cover is made of steel for frames 63 to 132 and FC-

200 cast iron for frames 160 to 355. The cast iron fan covers

have an aerodynamic design, which results in a signiﬁcant

reduction in noise level and optimized airﬂow between frame

ﬁns for heat exchange improvement. Figure 18 shows the

aerodynamic design of the cast iron fan cover.

Figure 18 - Fan cover

Figure 19 - Nameplate position of W22 motors

Figure 16 - Drive and non-drive endshields

3.11 Nameplate

The nameplate supplies information determining motor

construction and performance characteristics. The line name

is given on the ﬁrst line of the nameplate together with

nominal efﬁciency levels as required by IEC 60034-30.

Figure 20 - Nameplate layout for frames 63 to 132

Figure 21 - Nameplate layout for frames 160 to 355

MOBIL POLYREX EM

IE3 - 96.9%

MOBIL POLYREX EM

Drain plug closed Drain plug open

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W22 Electric Motor 13

4. Cooling system and Noise level /

Vibration level / Impact resistance

4.1 Cooling system and Noise level

The W22 standard motors are totally enclosed fan cooled

(IC411), as per IEC 60034-6 (ﬁgure 22). Non-ventilated

versions (TENV), air over (TEAO) and with forced ventilation

TEFV (IC416) are available on request. More information

about IC416 option can be found in section 12 - Variable

speed drive application.

The cooling system (fan, non drive endshield and fan cover) is

designed to minimize the noise level and improve thermal

efﬁciency (ﬁgure 23).

Figure 22 - Cooling system

Table 4 - Sound pressure levels for 50 Hz motors

Table 5 - Sound pressure levels for 60 Hz motors

* Applicable to IE3 Premium Efﬁciency Motors

Figure 23 - Cooling system operation

1 - Motor code

2 - Three phase

3 - Rated operating voltage

4 - Service duty

5 - Efﬁciency

6 - Frame size

7 - Degree of protection

8 - Insulation class

9 - Temperature rise

10 - Frequency

11 - Motor rated power

12 - Full load speed (rpm)

13 - Rated operating current

14 - Power factor

15 - Ambient temperature

16 - Service factor

17 - Altitude

18 - Motor weight

19 - Drive end bearing speciﬁcation and amount of grease

20 - Non-drive end bearing speciﬁcation and amount of

grease

21 - Type of grease for bearings

22 - Connection diagram

23 - Relubrication intervals in hours

24 - Certiﬁcation labels

25 - Manufacturing date

26 - Serial number

IEC 50 Hz

Frame

Sound pressure level - dB(A) at 1 meter

2 Poles 4 Poles 6 Poles 8 Poles

63 52 44 43 -

71 56 43 43 41

80 59 44 43 42

90 64/ 62* 49 45 43

100 67 53 44 50

112 64 56 48 46

132 68/ 67* 60/ 56* 52 48

160 67 61 56 51

180 67 61 56 51

200 72/ 69* 65/ 63* 60 53

225 75/ 74* 66/ 63* 61 56

250 75/ 74* 66/ 64* 61 56

280 77 69 65 59

315S/M 77 71 67 61

315 L 78 74/ 73* 68 61

355M/L 80 76/ 74* 73 70

355A/B 83 76 73 70

IEC 60 Hz

Frame

Sound pressure level - dB(A) at 1 meter

2 Poles 4 Poles 6 Poles 8 Poles

63 56 48 47 -

71 60 47 47 45

80 62 48 47 46

90 68 51 49 47

100 71 54 48 54

112 69 58 52 50

132 72 61 55 52

160 72 64 59 54

180 72 64 59 54

200 76/ 74* 68/ 66* 62 56

225 80/ 79* 70/ 67* 64 60

250 80/ 79* 70/ 68* 64 60

280 81 73 69 63

315S/M 81 75 70 64

315L 82 79/ 77* 71 64

355M/L 84 81/ 78* 77 75

355A/B 89 81 77 75

W22 motors comply with IEC 60034-9 Standard and the

corresponding sound pressure levels. Tables 4 and 5 show

sound pressure levels in dB(A) which are obtained upon tests

at 50 Hz and 60 Hz.

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W22 Electric Motor14

5.2 Bearings

W22 motors are supplied with deep groove ball bearings as

standard (ﬁgure 24). Optionally, frame size 160 and above can

be supplied with NU series roller bearings, where high

radial loads may occur.

The nominal bearing life L10h is 20,000 or 40,000 hours in

conformance with maximum radial and axial loads as

described in tables 9, 10 and 11. When direct coupled to the

load (without axial or radial thrusts), the L10h bearing life is

50,000 hours.

In standard conﬁguration, with ball bearings, the drive end

bearing is locked axially from frame 160. To compensate for

any axial movement the motors are ﬁtted with pre-load

washers for frames 63 to 200 and with pre-load springs for

frames 225 to 355. When provided with roller bearings, the

5. Shaft / Bearings

5.1 Shaft

The shaft of W22 standard motors is made of AISI 1040/45

steel, in frames IEC 63 to 315S/M, and in AISI 4140

steel for frames 315L, 355M/L and 355A/B. When supplied

with roller bearings (optional for frames 160 and above), the

shaft material must be AISI 4140.

As they are ﬁtted with AISI 4140 steel shafts in frames 315L,

355M/L and 355A/B, W22 motors can employ roller

bearings, making them suitable for heavy duty applications

such as pulley and belt applications. Information about

maximum allowable radial and axial loads on shaft ends is

given in tables 9, 10 and 11.

Important: Under such circumstances, the non drive end

bearing cap needs to be replaced as the non drive end

bearing must be locked.

Shafts are supplied with an open proﬁle key way, with a

threaded centre hole and have dimensions shown in section

17 - Mechanical data.

W22 motors can be supplied with a second shaft end as per

dimensions shown in section 17 - Mechanical data.

Information about maximum allowable radial and axial loads

on the second shaft end is available on request.

As an option, W22 motors can be supplied with stainless

steel shafts (AISI 316 and AISI 420) for highly corrosive

environments.

Note: 2 pole motors will have as an option only the shaft end in stainless steel

AISI 316.

Figure 24: Bearing view

The noise level ﬁgures shown in tables 4 and 5 are taken at 1

metre at no load. Under load the IEC 60034-9 Standard

foresees an increase of the sound pressure levels as shown in

table 6.

Table 6 - Maximum expected increase of sound pressure level for loaded

motors.

Note: These ﬁgures refer to operating frequencies of 50 Hz

and 60 Hz.

The global noise level can be reduced up to 2 dB (A) with the

installation of a drip cover.

4.2 Vibration level

Vibration of an electrical machine is closely related to its

assembly on the application and, thus, it is generally

desirable to perform vibration measurements under

installation and operational conditions. Nevertheless, to allow

evaluation of the vibration generated by the electrical

machine itself in a way to allow reproducibility of the tests and

the obtaining of comparative measurements, it is necessary

to perform such measurements with the machine uncoupled,

under controlled test conditions. The test conditions and

vibration limits described here are those found in IEC 60034-

14.

The severity of vibration is the maximum value of vibration

found among all the recommended measurement points and

directions. The table below indicates the recommended

admissible values of vibration severity under IEC standard

60034-14 for the frames IEC 56 to 400, for degrees of

vibration A and B.

W22 motors are dynamically balanced with half key and the

standard version meets the vibration levels of Grade A

(without special vibration requirements) described in IEC

60034-14 Standard. As an option, motors can be supplied in

conformance with vibration of Grade B. The RMS speed and

vibration levels in mm/s of Grades A and B are shown in

table 7.

Table 7 -Speed and vibration levels

4.3 Impact resistance

The W22 motor complies with impact level IK08 - mechanical

impact of 5J as per EN 62262 - Degrees of protection

provided by enclosures for electrical equipment against

external mechanical impacts (IK code) ensuring superior

mechanical strength for the most demanding applications.

Frame (mm) 2 poles 4 poles 6 poles 8 poles

90 ≤ H ≤ 160 2 5 7 8

180 ≤ H ≤ 200 2 4 6 7

225 ≤ H ≤ 280 2 3 6 7

H = 315 2 3 5 6

355 ≤ H 2 2 4 5

Vibration

Frame 56 ≤ H ≤ 132 132 < H ≤ 280 H > 280

Assembly

Vibration speed

RMS (mm/s)

Vibration speed

RMS (mm/s)

Vibration speed

RMS (mm/s)

Grade A Free suspension 1.6 2.2 2.8

Grade B Free suspension 0.7 1.1 1.8

www.weg.net

W22 Electric Motor 15

Table 9.1 - Maximum permissible radial thrusts for ball bearingsTable 8 - ka factor

5.2.1 Permissible loads

rear bearing is locked and the axial movement is

compensated by the axial play of the front roller bearing.

Minimum and maximum admissible radial loads for roller

bearings are shown in table 10 on page 16.

Bearings lifetime depends on the type and size of the

bearing, the radial and axial mechanical loads it is submitted

to, operating conditions (environment, temperature), rotational

speed and grease life. Therefore, bearing lifetime is closely

related to its correct use, maintenance and lubrication.

Respecting the quantity of grease and lubrication intervals

allows bearings to reach the lifetime given. W22 motors in

IEC frames 225S/M and above are provided as standard with

grease ﬁttings in each endshield to permit the relubrication of

the bearings. The quantity of grease and lubrication intervals

are stamped in the motor nameplate. The lubrication interval

is shown in tables 12 and 13 - page 17.

It must be emphasized that excessive lubrication, i.e. a

quantity of grease greater than that recommended on the

motor nameplate, can result in the increase of bearing

temperatures leading to reduced operating hours.

Note:

1. L10 lifetime means that at least 90% of the bearings

submitted to the maximum indicated loads will reach the

number of hours indicated. The maximum admissible radial

and axial loads for the standard conﬁguration are shown

in table 9, 10 and 11. The values of the maximum radial

load consider axial load as nil. The values of the maximum

axial load consider radial load as nil. For bearing lifetime in

combined axial and radial loads condition contact WEG.

2. The radial force value Fr usually results from information

recommended on catalogues of pulley/belts manufacturers.

When this information is not available, the force Fr, under

operation, can be calculated based on the output power, on

coupling design characteristics with pulleys and belts and on

the type of application. So we have:

Where:

Fr is the radial force caused by pulley and belt coupling [N];

Pn is the motor rated power [kW];

is the motor rated speed per minute [rpm];

dp is the pitch diameter of the driven pulley [mm];

ka is a factor that depends on belt tension and type of

application (table 8).

Figure 25 - Radial and axial thrust on motor shaft

Radial thrust - Ball bearings

Important:

1 - Special applications

Motor operation under adverse operating conditions, such as

higher ambient temperatures and altitudes or abnormal

axial / radial loads, may require speciﬁc lubrication measures

and alternative relubrication intervals to those indicated in the

tables provided within this technical catalogue.

2 - Roller bearings

Roller bearings require a minimum radial load so as to ensure

correct operation. They are not recommended for direct

coupling arrangements, or for use on 2 pole motors.

3 - Frequency inverter driven motors

Bearing life may be reduced when a motor is driven by

a frequency drive at speeds above nominal. Speed itself is

one of the factors taken into consideration when determining

motor bearing life.

4 - Motors with modiﬁed mounting conﬁgurations

For motors supplied with horizontal mounting but working

vertically, lubrication intervals must be reduced by half.

5 - Figures for radial thrusts

The ﬁgures given in the tables below for radial thrusts take

into consideration the point upon which the load is applied,

either at the centre of the shaft (L/2) or at the end of the shaft

(L), ﬁgure 25.

Groups and Basic Types of Application

ka Factor of the

application

Belts

Plane

Belts

(Fans and Blowers. Centrifugal Pumps. Winding machines.

Compressors. Machine tools) with outputs up to 30 HP

(22 kW)

2.0 3.1

(Fans and Blowers, Centrifugal Pumps, Winding machines,

Compressors, Machine tools) with outputs higher than

30 HP (22 kW), Mixers, Plungers, Printer Machines.

2.4 3.3

Presses, vibrating screens, Piston and screw compressor,

pulverisers, helicoidal conveyors, woodworking machines,

Textile machines, Kneading machines, Ceramic machines,

Pulp and paper industrial grinders.

2.7

3.4

Overhead cranes, Hammer mills, Metal laminators,

Conveyors, Gyratory Crushers, Jaw Crusher, Cone Crushers,

Cage Mills, Ball Mills, Rubber Mixers, Mining machines,

Shredders.

3.0 3.7

Maximum permissible radial thrust - 50 Hz - Fr in (kN) 20,000 hours

Frame

2 poles 4 poles 6 poles 8 poles

L L/2 L L/2 L L/2 L L/2

63 0.4 0.3 0.4 0.3 0.4 0.3 0.4 0.3

71 0.5 0.5 0.6 0.5 0.6 0.5 0.7 0.6

80 0.6 0.6 0.7 0.7 0.8 0.7 1.0 0.8

90 0.7 0.6 0.8 0.7 0.9 0.8 1.0 0.9

100 0.9 1.0 1.0 1.1 1.2 1.3 1.3 1.4

112 1.2 1.3 1.4 1.5 1.6 1.8 1.7 1.9

132 1.8 2.0 2.2 2.4 2.4 2.7 2.6 2.9

160 2.3 2.6 2.6 2.9 2.7 3.3 2.7 3.7

180 3.1 3.5 3.6 4.0 4.2 4.7 4.2 5.2

200 3.7 4.0 4.2 4.7 4.9 5.4 5.7 6.2

225 5.1 5.5 5.2 6.3 5.3 7.0 5.7 8.1

250 4.9 5.3 5.2 5.7 6.5 7.1 6.0 8.2

280 5.0 5.4 6.7 7.2 7.8 8.4 8.7 9.4

315S/M 4.3 4.7 7.0 7.7 8.1 8.8 9.0 9.8

315L 4.6 5.0 4.0 7.3 6.2 8.2 9.1 9.8

355M/L 4.8 5.1 8.5 9.3 9.6 10.4 11.6 12.6

355A/B 4.5 4.7 5.1 7.4 7.4 8.0 6.9 10.6

Fr = .ka (N)

. dp

19,1 . 10

. P

www.weg.net

W22 Electric Motor16

Table 9.2 - Maximum permissible radial thrusts for ball bearings

Table 10 - Maximum permissible radial thrusts for roller bearings

Note: the ﬁgures given for roller bearings take into consideration shaft

supplied with steel AISI 4140

Radial thrust - Roller bearings

Table 11.1 - Maximum pemissible axial thrusts for ball bearings

Axial thrust - Ball bearings

Maximum permissible radial thrust - 50 Hz - Fr in (kN) 40,000 hours

Frame

2 poles 4 poles 6 poles 8 poles

L L/2 L L/2 L L/2 L L/2

63 0.2 0.2 0.3 0.3 0.4 0.3 0.4 0.3

71 0.3 0.3 0.4 0.4 0.5 0.5 0.6 0.5

80 0.5 0.5 0.6 0.5 0.6 0.6 0.7 0.7

90 0.5 0.5 0.6 0.5 0.7 0.6 0.8 0.7

100 0.7 0.7 0.7 0.8 0.9 1.0 1.0 1.1

112 0.9 1.0 1.0 1.1 1.2 1.4 1.3 1.4

132 1.4 1.6 1.6 1.8 1.8 2.0 2.0 2.2

160 1.8 2.0 1.9 2.1 2.2 2.4 2.5 2.7

180 2.4 2.7 2.7 3.0 3.2 3.5 3.6 3.9

200 2.8 3.0 3.2 3.5 3.7 4.0 4.3 4.7

225 3.9 4.3 4.3 4.7 4.7 5.2 5.6 6.2

250 3.7 4.1 3.8 4.2 4.9 5.4 5.7 6.3

280 3.8 4.1 4.9 5.4 5.8 6.3 6.5 7.0

315S/M 3.1 3.4 4.9 5.4 5.7 6.2 6.3 6.9

315L 3.4 3.6 4.0 4.9 5.1 5.5 6.4 6.9

355M/L 3.3 3.6 5.8 6.3 6.5 7.1 8.2 8.9

355A/B 3.0 3.2 4.1 4.4 4.2 4.5 5.3 6.8

Maximum permissible radial thrust - 50 Hz - Fr in (kN) 20,000 or 40,000 hours

Frame

4 poles 6 poles 8 poles

L/2 L L/2 L L/2 L

160 6 3.7 5.9 3.6 6 3.7

180 10.4 5.7 10.4 5.7 10.5 5.7

200 13.4 8.4 13.4 8.4 13.5 8.4

225S/M 15 6.9 15.1 7 15.3 7.3

250S/M 14.1 8.2 14.4 8.7 14.1 8.2

280S/M 20.9 12.1 21.2 13.1 21.3 13

315S/M 23.4 10.9 25.4 11.9 26.8 12.5

315L 8.5 4.0 13.3 6.2 22.6 10.4

355M/L 31.7 15 28.9 13.7 30.1 14.3

355A/B 10.7 5.1 16.4 7.8 14.6 6.9

Radial thrust - Ball bearings

Maximum permissible axial thrust - 50 Hz - Fa in (kN) - 20,000 hours

Frame Poles

Horizontal

Vertical with

shaft upwards

Vertical with shaft

downwards

Pushing Pulling Pushing Pulling Pushing Pulling

2 0.2 0.2 0.2 0.2 0.2 0.2

4 0.3 0.3 0.3 0.3 0.3 0.3

6 0.3 0.4 0.3 0.4 0.4 0.3

8 0.3 0.4 0.3 0.4 0.4 0.3

2 0.2 0.3 0.2 0.3 0.2 0.3

4 0.3 0.4 0.3 0.4 0.3 0.4

6 0.4 0.5 0.4 0.5 0.4 0.5

8 0.5 0.6 0.4 0.6 0.5 0.6

2 0.3 0.4 0.3 0.4 0.3 0.4

4 0.4 0.6 0.3 0.6 0.4 0.5

6 0.5 0.7 0.4 0.7 0.5 0.7

8 0.6 0.8 0.5 0.9 0.6 0.8

2 0.4 0.4 0.3 0.5 0.4 0.4

4 0.5 0.6 0.5 0.7 0.5 0.6

6 0.6 0.7 0.6 0.8 0.6 0.7

8 0.8 0.9 0.7 0.9 0.8 0.8

100

2 0.4 0.6 0.3 0.7 0.4 0.6

4 0.5 0.8 0.4 0.9 0.5 0.8

6 0.7 1.0 0.6 1.1 0.7 1.0

8 0.8 1.2 0.7 1.3 0.8 1.1

112

2 0.5 0.8 0.5 0.9 0.6 0.7

4 0.7 1.1 0.7 1.2 0.8 1.0

6 1.0 1.4 0.9 1.5 1.0 1.3

8 1.1 1.5 1.0 1.7 1.1 1.4

132

2 0.7 1.3 0.6 1.5 0.8 1.2

4 1.0 1.8 0.8 2.1 1.0 1.7

6 1.2 2.2 1.1 2.5 1.3 2.1

8 1.4 2.5 1.2 2.8 1.4 2.3

160

2 2.4 1.7 0.2 2.1 2.8 1.5

4 3.0 2.3 2.7 2.7 3.4 2.0

6 3.4 2.7 3.1 3.3 4.0 2.4

8 3.9 3.2 3.6 3.7 4.4 2.9

180

2 3.2 2.3 2.9 2.8 3.7 2.0

4 3.9 3.0 3.6 3.7 4.6 2.7

6 4.7 3.8 4.2 4.5 5.3 3.3

8 5.2 4.4 4.8 5.1 6.0 3.9

200

2 3.6 2.6 3.1 3.3 4.3 2.1

4 4.5 3.5 4.0 4.3 5.3 3.0

6 5.2 4.2 4.7 5.1 6.1 3.7

8 6.0 5.0 5.5 5.9 6.9 4.5

225

2 4.6 3.8 3.8 4.9 5.7 3.1

4 5.8 5.0 5.0 6.3 7.1 4.2

6 6.7 5.9 5.7 7.6 8.4 4.9

8 7.8 7.0 6.9 8.5 9.3 6.1

250

2 4.5 3.7 3.7 4.9 5.6 3.0

4 5.4 4.7 4.2 6.6 7.4 3.4

6 6.8 6.0 5.4 8.0 8.8 4.6

8 7.8 7.1 6.6 8.9 9.7 5.9

280

2 4.4 3.7 3.2 5.4 6.2 2.4

4 6.3 5.5 4.6 8.0 8.8 3.9

6 7.6 6.8 5.8 9.4 10.2 5.0

8 8.5 7.8 6.6 10.6 11.4 5.8

315S/M

2 4.1 3.3 2.4 5.9 6.7

1.6

4 6.8 6.0 4.3 10.0 10.7 3.5

6 8.0 7.2 5.2 11.9 12.7 4.5

8 9.1 8.3 6.2 13.2 14.0 5.5

315L

2 3.0 2.2 1.1 5.0 5.7 0.4

4 4.5 3.7 1.4 8.2 8.9 0.6

6 5.2 4.4 1.9 9.5 10.3 1.2

8 6.3 5.5 3.4 10.0 10.8 2.6

355M/L

2 4.4 3.7 1.1 8.8 9.5 0.3

4 7.7 7.0 3.2 13.9 14.7 2.5

6 9.1 8.4 4.7 15.3 16.0 3.9

8 10.9 10.2 6.4 17.2 17.9 5.7

355A/B

2 4.1 3.3

On request

4 6.8 6.0

6 7.8 7.0

8 9.8 9.0

www.weg.net

W22 Electric Motor 17

Table 12 - Lubrication intervals for ball bearings

Lubrication intervals (40°C - rated speed)

Table 11.2 - Maximum permissible axial thrusts for ball bearings

Axial thrust - Ball bearings

Maximum permissible axial thrust - 50 Hz - Fa in (kN) - 40,000 hours

Frame Poles

Horizontal

Vertical with

shaft upwards

Vertical with shaft

downwards

Pushing Pulling Pushing Pulling Pushing Pulling

2 0.1 0.1 0.1 0.1 0.1 0.1

4 0.2 0.2 0.2 0.2 0.2 0.2

6 0.2 0.2 0.2 0.2 0.2 0.2

8 0.2 0.2 0.2 0.2 0.2 0.2

2 0.1 0.2 0.1 0.2 0.1 0.2

4 0.2 0.3 0.2 0.3 0.2 0.2

6 0.2 0.3 0.2 0.3 0.2 0.3

8 0.3 0.4 0.3 0.4 0.3 0.4

2 0.2 0.3 0.1 0.3 0.2 0.3

4 0.2 0.4 0.2 0.4 0.2 0.3

6 0.3 0.5 0.3 0.5 0.3 0.4

8 0.4 0.6 0.3 0.6 0.4 0.5

2 0.2 0.3 0.2 0.3 0.2 0.2

4 0.3 0.4 0.3 0.4 0.3 0.3

6 0.4 0.5 0.4 0.5 0.4 0.4

8 0.5 0.6 0.5 0.6 0.5 0.5

100

2 0.2 0.4 0.2 0.4 0.2 0.3

4 0.3 0.5 0.2 0.6 0.3 0.5

6 0.4 0.7 0.3 0.8 0.4 0.6

8 0.5 0.8 0.4 0.9 0.5 0.7

112

2 0.3 0.5 0.3 0.6 0.3 0.4

4 0.4 0.7 0.4 0.8 0.5 0.6

6 0.6 0.9 0.5 1.1 0.6 0.8

8 0.7 1.0 0.6 1.2 0.7 0.9

132

2 0.4 0.9 0.3 1.1 0.5 0.8

4 0.6 1.2 0.5 1.4 0.6 1.1

6 0.8 1.5 0.6 1.8 0.8 1.3

8 0.9 1.7 0.7 2.0 0.9 1.5

160

2 1.8 1.1 1.6 1.5 2.2 0.9

4 2.2 1.5 1.9 1.9 2.6 1.2

6 2.5 1.8 2.2 2.3 3.1 1.5

8 2.9 2.2 2.5 2.7 3.4 1.8

180

2 2.4 1.5 2.1 2.0 2.9 1.2

4 2.9 2.0 2.5 2.6 3.5 1.6

6 3.4 2.5 3.0 3.2 4.1 2.1

8 3.9 3.0 3.5 3.7 4.6 2.6

200

2 2.7 1.7 2.2 2.4 3.4 1.2

4 3.3 2.3 2.8 3.1 4.1 1.8

6 3.8 2.8 3.3 3.8 4.8 2.3

8 4.4 3.4 3.9 4.3 5.3 2.9

225

2 3.4 2.6 2.7 3.7 4.5 1.9

4 4.2 3.5 3.4 4.7 5.5 2.6

6 4.8 4.0 3.8 5.7 6.5 3.0

8 5.7 4.9 4.8 6.4 7.1 4.1

250

2 3.4 2.5 2.5 3.7 4.5 1.8

4 3.9 3.1 2.6 5.0 5.9 1.8

6 4.9 4.1 3.6 6.2 7.0 2.8

8 5.8 4.9 4.5 6.8 7.6 3.8

280

2 3.3 2.5 2.0 4.3 5.1 1.2

4 4.6 3.8 2.9 6.2 7.0 2.1

6 5.4 4.7 3.6 7.3 8.0 2.8

8 6.1 5.4 4.2 8.2 9.0 3.4

315

2 2.9 2.2 1.2 4.8 5.5

0.4

4 4.7 4.0 2.2 7.9 8.6 1.4

6 5.6 4.8 2.8 9.4 10.2 2.0

8 6.4 5.6 3.4 10.4 11.2 2.6

315L

2 3.0 2.2 1.1 5.0 5.7 0.4

4 4.5 3.7 1.4 8.2 8.9 0.6

6 5.2 4.4 1.9 9.5 10.3 1.2

8 6.3 5.5 3.4 10.0 10.8 2.6

355M/L

2 3.1 2.4 0.6 6.7 7.5 0.2

4 5.5 4.7 1.9 1.1 11.6 1.2

6 6.3 5.6 2.8 11.8 12.7 2.0

8 7.6 6.8 3.8 13.2 13.7 2.9

355A/B

2 2.9 2.2

On request

4 4.6 3.9

6 5.2 4.5

8 6.5 5.8

Lubrication intervals (hours)

Frame Poles Bearing 50 Hz 60 Hz

160

6309

22,000 20,000

25,000 25,0006

180

6311

17,000 14,000

25,000 25,0006

200

6312

15,000 12,000

25,000 25,0006

225

6314

5,000 4,000

4 14,000 12,000

6 20,000 17,000

8 24,000 20,000

250

6314

5,000 4,000

4 14,000 12,000

6 20,000 17,000

8 24,000 20,000

280

2 6314 5,000 4,000

6316

13,000 10,000

6 18,000 16,000

8 20,000 20,000

315

2 6314 5,000 4,000

6319

11,000 8,000

6 16,000 13,000

8 20,000 17,000

355

6314 5,000 4,000

6316 4,000 On request

6322

9,000 6,000

6 13,000 11,000

8 19,000 14,000

Lubrication intervals (hours)

Frame Poles Bearing 50 Hz 60 Hz

160

NU309 25,000 25,0006

180

NU311 25,000 25,0006

200

NU312 25,000

21,000

25,000

225

NU314

11,000 9,000

6 16,000 13,000

8 20,000 19,000

250

NU314

11,000 9,000

6 16,000 13,000

8 20,000 19,000

280

NU316

9,000 7,000

6 14,000 12,000

8 19,000 17,000

315

NU319

7,000 5,000

6 12,000 9,000

8 17,000 15,000

355

NU322

5,000 4,000

6 9,000 7,000

8 14,000 13,000

Table 13 - Lubrication intervals for roller bearings

Note: the amount of grease is indicated on the nameplate

www.weg.net

W22 Electric Motor18

Table 14 - Mountings conﬁgurations

* Non-deﬁned mountings by IEC 60034-7

Important:

1. The mountings IM B34 and IM B14 with C-DIN ﬂange, in

accordance with DIN standard EN 50347, are limited to

frame size 132; C ﬂange in accordance with NEMA MG 1

Part 4 standard is available for frames 63 to 355M/L.

2. For motors mounted vertically shaft down ﬁtting of a drip

cover is recommended to prevent ingress of small objects

into the fan cover. The increase in total length of the motor

with drip cover is shown in the section 19.

3. For vertically shaft up mounted motors installed in

environments containing liquids, the use of a rubber slinger

is recommended to prevent the ingress of liquid into the

motor through the shaft.

6. Mounting forms

The mounting conﬁguration for the W22 motor lines comply

with IEC 60034-7 standard. Standard mounting forms and

their variations are shown in table 14. After the designation, a

characteristic letter is used to deﬁne the terminal box

position. So, the mounting code IM B3 can be seen in WEG

documents as detailed below (without IM code).

B3L - terminal box on left hand side of the motor frame

B3T - terminal box on top of the motor frame

B3R - terminal box on right hand side of the motor frame

Note: The terminal box position is deﬁned viewing the motor

from the shaft end (ﬁgure 26).

Figure 26 - B3T mounting

5.2.2 Bearing monitoring

On request, W22 motors can be equipped with bearing

temperature detectors which monitor bearing operating

conditions. The most commonly used accessory is the

Pt-100 temperature detector for continuous monitoring of

bearing operating temperature.

This type of monitoring is extremely important considering

that it directly affects the grease and bearing lives particularly

on motors equipped with regreasing facilities.

Basic

mountings

Other type of mounting

IM B3 IM V5 IM V6 IM B6 IM B7 IM B8

IM 1001 IM 1011 IM 1031 IM 1051 IM 1061 IM 1071

IM B35 IM V15 IM V36 - *) - *) - *)

IM 2001 IM 2011 IM 2031 IM 2051 IM 2061 IM 2071

IM B34 IM V17 IM V37 - *) - *) - *)

IM 2101 IM 2111 IM 2131 IM 2151 IM 2161 IM 2171

IM B5 IM V1 IM V3

IM 3001 IM 3011 IM 3031

IM B14 IM V18 IM V19

IM 3601 IM 3611 IM 3631

7. Degree of protection / Sealing

system / Painting

7.1 Degree of protection

As per IEC 60034-5, the degree of protection of a rotating

electrical machine consists of the letters IP (ingress

protection), followed by two characteristic numerals, with the

following meaning:

a) First characteristic numeral: referred to protection of people

against or approach to live parts and against contacts with

moving parts (other than smooth rotating shafts and the

like) inside the enclosure and protection of the machine

against ingress of solid and foreign objects.

b) Second characteristic numeral: protection of machines

against harmful effects due to ingress of water.

Motors are supplied, as standard, in the B3T conﬁguration,

with the terminal box on top.

www.weg.net

W22 Electric Motor 19

7.2 Sealing system

The sealing system applied to the shaft of W22 motors in

frame 63 to 200 is V’ring. For frames 225S/M to 355A/B the

sealing system is the exclusive WSeal

, which consists of a

double lipped V’Ring with a metallic cap (see ﬁgure 27). This

conﬁguration operates like a labyrinth preventing ingress of

water and dust into the motor, and not recommended for use

in ﬂange mounted motors.

Alternatively, W22 motors can be supplied with other sealing

systems, for example, Oilseal, tachonite labyrinth and the

WEG exclusive W3 Seal

, among others (see Section 15 -

Optional features).

When ﬁtted with ﬂange, the recommended seal is lip leal (no

contact with liquid) and Oilseal (with contact with liquid)

7.3 Painting

W22 motors of frame 63 to 132 are supplied as standard with

WEG internal painting plan 207A. This plan consists of:

Primer: one coat with 20 to 55 μm of alkyd primer;

Finishing: one coat with 30 to 40 μm of styrenated alkyd

synthetic enamel.

And, W22 motors of frame 160 up to 355 are supplied as

standard with WEG internal painting plan 203A, consisting of:

Primer: one coat with 20 to 55 μm of alkyd primer;

Finishing: one coat with 50 to 75 μm of alkyd synthetic

enamel.

Tropicalized painting

The integrity of the insulation system is the primary

consideration when determining the lifetime of an electric

motor. High humidity can result in premature deterioration of

the insulation system, therefore for any ambient temperature

with relative humidity above 95%, it is recommended to coat

all internal components of the motor with an epoxy painting,

also known as tropicalization.

Figure 28 - WEG internal painting plan

W22 motors are supplied with degrees of protection in

conformance with IEC 60034-5. As standard, they are IP55,

which means:

a) First characteristic numeral 5: machine protected against

dust. The enclosure is protected against contact with

moving parts. Ingress of dust is not totally prevented, but

dust does not enter in sufﬁcient quantity to interfere with

satisfactory operation of the machine.

b) Second characteristic numeral 5: Machine protected

against water jets. Water projected by a nozzle against the

machine from any direction shall have no harmful effect.

These painting plans have a minimum resistance to the salt

spray test of 120 hours (plan 207A) and 240 hours (plan

203A) in accordance with ASTM B117-03 and may be used in

motors applied in normal environments, slightly severe,

sheltered or non-sheltered, for industrial use, with low relative

humidity, normal temperature variations and the presence of

Note:

These painting plans are not recommended for direct

exposure to acid steam, alkalis, solvents and salty

environments.

Alternative painting plans are available on request, which are

suitable to guarantee additional protection in aggressive

environments, either protected or unprotected (see section

15 - Optional features).

8. Voltage / Frequency

IEC 60034-1 the combination of voltage and frequency

variations are classiﬁed as Zone A or Zone B, as per ﬁgure 29.

Figure 29 - Rated voltage and frequency limits for electric motors

Voltage

Zone A

Frequency

Zone B (outside zone A)

Rating point

IEC 60034-1 states that the motor must be suitable to

perform its main function (supply torque) continuously at

Zone A. However, this motor may not fully meet its

performance characteristics due to power supply voltage and

frequency variation, which can result in temperature rise

above the rated value.

The motor must also be suitable to perform its main function

(supply torque) at Zone B. However, the performance

characteristic changes will be greater than those operating at

Zone A. The temperature rise will also be higher than that of

rated voltage and frequency and that operating at Zone A.

Prolonged operation near Zone B boundary is not

recommended.

Figure 27 - WSeal

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W22 Electric Motor20

T (°C)

Altitude (m)

1000 1500 2000 2500 3000 3500 4000 4500 5000

10 0.97 0.92 0.88

15 0.98 0.94 0.90 0.86

20 1.00 0.95 0.91 0.87 0.83

25 1.00 0.95 0.93 0.89 0.85 0.81

30 1.00 0.96 0.92 0.90 0.86 0.82 0.78

35 1.00 0.95 0.93 0.90 0.88 0.84 0.80 0.75

40 1.00 0.97 0.94 0.90 0.86 0.82 0.80 0.76 0.71

45 0.95 0.92 0.90 0.88 0.85 0.81 0.78 0.74 0.69

50 0.92 0.90 0.87 0.85 0.82 0.80 0.77 0.72 0.67

55 0.88 0.85 0.83 0.81 0.78 0.76 0.73 0.70 0.65

60 0.83 0.82 0.80 0.77 0.75 0.73 0.70 0.67 0.62

65 0.79 0.76 0.74 0.72 0.70 0.68 0.66 0.62 0.58

70 0.74 0.71 0.69 0.67 0.66 0.64 0.62 0.58 0.53

75 0.70 0.68 0.66 0.64 0.62 0.60 0.58 0.53 0.49

80 0.65 0.64 0.62 0.60 0.58 0.56 0.55 0.48 0.44

Table 15 - Correction factors for altitude and ambient temperature

W22 motors are supplied with class F insulation and Class B

(80 K) temperature rise at normal operating conditions

(unless otherwise speciﬁed).

The difference between the temperature of the class F

insulation (105 K) and the temperature rise of the design

(80 K) means that, in practice, W22 motors are suitable to

supply output ratings above the rated values up to a limit

where the temperature rise reaches the temperature rise

value of the insulation class.

The ratio between temperature rise and service factor is

given by the equation below:

FINAL

(S.F.)

x DT

INITIAL

Note: Please note that under these conditions combined

ambient and temperature rise may reach class F limits.

Bearing lubrication intervals will change under operating

conditions other than 40°C maximum ambient temperature

and 1000 metres above sea level. Contact WEG for more

information.

All W22 motors are wound with the WISE

insulation system

which consists of enamelled copper wire meeting

temperatures up to 200°C and impregnated with solvent free

resin. The WISE

system also permits motor operation with

variable speed drives (see section 12).

10.1 Space heaters

The use of space heaters are recommended in two situations:

Motors installed in environments with relative air humidity

up to 95%, in which the motor may remain idle for periods

greater than 24 hours;

Motors installed in environments with relative air humidity

greater than 95%, regardless of the operating schedule. It

should be highligthed that in this situation it is strongly

recommended that an epoxy paint known as tropicalized

painting is applied in the internal components of the motor.

More information can be obtained in section 7.3.

The supply voltage for space heaters must be deﬁned by the

Customer. For all frame sizes, W22 motors can be provided

with space heaters suitable for 110-127 V, 220-240 V and

380-480 V. As an option, dual voltage heaters of 110-127 /

220-240 V can be supplied for motor frame sizes 112 to

355A/B, through reconnection of the heater cables inside the

terminal box.

The power rating and number of space heaters ﬁtted depends

on the size of the motor as indicated in table 16 below:

Pmax = Pnom x correction factor

11. Motor protections

Protections available for W22 can be classiﬁed as follows:

Based on operating temperature

Based on operating current.

In section 14 - Standard features it is possible to identify the

type of protection for each W22 line.

11.1 Protection based on operating temperature

Continuous duty motors must be protected from overload

either by a device integrated into the motor or via an

independent protection system, usually a thermal relay with

rated or setting current, equal to or below the value obtained

when multiplying the power supply rated current (In), as per

table 17.

Service Factor Relay setting current

1.0 up to 1.15 In x S.F.

≥ 1.15 (In x S.F.) - 5%

Table 17 - Relay setting current referred to service factor

Table 16 - Power and quantity of space heaters

9. Overload capacity

As per IEC 60034-1, motors having rated output not

exceeding 315 kW and rated voltages not exceeding 1 kV

shall be capable of withstanding a current equal to 1,5 times

the rated current for not less than 2 min.

10. Ambient / Insulation

Unless otherwise speciﬁed, the rated power outputs shown

in the electrical data tables within this catalogue refer to

continuous duty operation S1, as per IEC 60034-1 and under

the following conditions:

With ambient temperature range -30°C to +40°C

With altitudes up to 1000 metres above sea level

For operating temperatures and altitudes differing from those

above, the factors indicated in table 15 must be applied to

the nominal motor power rating in order to determine the

derated available output (Pmax).

Frame Quantities Total Power rated (W)

63 to 80 1 7.5

90 and 100 1 11

112 2 22

132 and 160 2 30

180 and 200 2 38

225 and 250 2 56

280 and 315 2 140

355 2 174

Upon service factor calculation, we can see that SF is

approximately 1.15. This reserve of temperature also allows

W22 motors with class B temperature rise (80 K) to operate

continuously at:

Up to 15% above its rated output power, considering 40°C

ambient temperature and 1.000 m.a.s.l. or;

Up to 55°C ambient temperature, keeping the rated output

power or;

Up to 3000 m.a.s.l., keeping the rated output power

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W22 Electric Motor 21

Figure 30 - Pt-100

Pt-100

These are temperature detectors with operating principle

based on the properties that some materials vary the electric

resistance with the variation in temperature (usually platinum,

nickel or copper). They are also ﬁtted with calibrated

resistances that vary linearly with temperature, allowing

continuous reading of motor operating temperature through a

monitoring display, with high precision rate and response

sensitivity.

The same detector can serve as alarm (with operation above

the regular operating temperature) and trip (usually set up for

the maximum temperature of the insulation class).

Thermistor (PTC)

These are thermal protectors consisting of semiconductor

detectors with sudden variation of the resistance when

reaching a certain temperature.

PTC is considered a thermistor with the resistance increasing

drastically to a well deﬁned temperature ﬁgure. This sudden

resistance variation blocks the PTC current, causing the

output relay to operate, and the main circuit to switch-off.

The thermistors are of small dimensions, do not wear and

have quicker response if compared to other protectors,

although they do not allow continuous monitoring of motor

operating temperature.

Together with their electronic circuits, these thermistors

provide full protection against overheating caused by

overload, under or overvoltage or frequent reversing

operations.

Where thermistor protection is required to provide both alarm

and trip operation, it is necessary for each phase of the

motor winding to be equipped with two sets of appropriately

rated thermistors.

WEG Automation has a product called RPW which is an

electronic relay intended speciﬁcally to read the PTC signal

and operate its output relay. For more information go to the

website www.weg.net.

Bimetallic thermal protectors

These are silver-contact thermal sensors, normally closed,

that operate at certain temperature rise. When their operating

temperature decreases, they go back to the original position

instantaneously, allowing the silver contact to close again.

The bimetallic thermal protectors are series-connected with

the contactor coil, and can be used either as alarm or trip.

There are also other types of thermal protectors such as

Pt-1000, KTY and thermocouples. Contact your local WEG

ofﬁce closest to you for more information.

11.2 Protection based on operating current

Overloads are processes that usually make the temperature

increase gradually. To solve this problem, the thermal

protectors described in item 11.1 are quite suitable. However,

the only way to protect motors against short-circuit currents

Figure 31 - Thermistor (PTC)

is the application of fuses. This type of protection depends

directly on the current and it is highly effective in cases of

locked rotor.

WEG Automation supplies fuses in versions D and NH. Go to

the site www.weg.net for more information.

12. Variable speed drive application

12.1 Considerations regarding voltage spikes and the

insulation system

The stator windings of W22 motors are wound with class F

insulation (class H optional) and are suitable for either DOL

starting or via a variable speed drive. They incorporate the

WEG exclusive insulation system - WISE

(WEG Insulation

System Evolution) - which ensures superior electrical

insulation characteristics.

The stator winding is suitable for variable speed drive

application, taking into account the limits shown in table 18.

* dV/dt and Rise time deﬁnition according to Nema Std. MG1 - Part 30.

Table 18 - Supportability of random wound motors’ insulation system

Motor rated voltage

Voltage Spikes

dV/dt

Rise

time*

Time

between

pulses

at motor

terminals

(phase-phase)

at motor

terminals

(phase-phase)

rated

≤ 460 V ≤ 1600 V ≤ 5200 V/µs

≥ 0.1 µs ≥ 6 µs460 V < V

rated

≤ 575 V ≤ 1800 V ≤ 6500 V/µs

575 V < V

rated

≤ 690 V ≤ 2200 V ≤ 7800 V/µs

Rated voltage

220-240/380-415 V (50 Hz)

440-460 V (60 Hz)

Notes:

1 - In order to protect the motor insulation system, the

maximum recommended switching frequency is 5 kHz.

2 - If one or more of the above conditions is not attended, a

ﬁlter (load reactor or dV/dt ﬁlter) must be installed in the

output of the VSD.

3 - General purpose motors with rated voltage greater than

575 V, which at the time of purchase did not have any

indication of operation with VSD, are able to withstand the

electrical limits set in the table above for rated voltage up

to 575 V. If such conditions are not fully satisﬁed, output

ﬁlters must be used.

4 - General purpose motors of the dual voltage type, for

example 380/660 V, which at the time of purchase did not

have any indication of operation with VSD, are able to be

driven by a VSD in the higher voltage only if the limits set

in the table above for rated voltage up to 460 V are fully

attended in the application. Otherwise, a load reactor or a

dV/dt ﬁlter must be installed in the VSD output.

12.2 Inﬂuence of the VSD on the motor temperature

Motors operating with frequency inverters may present a

higher temperature rise than when operating under sinusoidal

supply. This occurs due to the combined effects of the loss

increase resulting from the PWM harmonics and the

reduction in ventilation experienced by self-ventilated motors

when operating at low frequencies. There are basically the

following solutions to avoid excessive overheating of the

motor in VSD applications:

Torque derating (oversizing of the self-ventilated motor

frame size);

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W22 Electric Motor22

Optimal flux

(V/f Optimal)

Constant flux

(V/f Constant)

Figure 33 - Derating curves for Optimal Flux

condition

Figure 32 - Derating curves for constant ﬂux condition

Constant flux

(V/f Constant)

Optimal flux

(V/f Optimal)

Notes:

1 - The derating curves below are related to the motor

thermal capability only and do not concern the insulation

class. Speed regulation will depend on VSD mode of

operation and proper adjustment.

2 - Torque derating is usually required when the motor drives

constant torque loads (e.g. screw compressors,

conveyors, extruders, etc.). For squared torque loads,

such as pumps and fans, no torque derating is normally

required.

3 - W22 motors of frame sizes ≥ 90S can be blower cooled

(independently ventilated) under request. In such case,

the motor will be suitable for VSD operation without

torque derating regardless the load type.

4 - For operation above base (nameplate) speed, mechanical

issues must be also observed. Please refer to the

maximum limits for safe operation set in Table 19.

5 - Applications with motors rated for use in hazardous areas

must be particularly evaluated - in such case please

contact WEG.

Constant ﬂux condition

Applicable when the motor is supplied by any commercial

drive operating with any control scheme other than the

Optimal Flux

available in WEG drives.

Optimal Flux

condition

The study of the composition of the overall motor losses and

its relation to operation parameters such as the frequency,

the magnetic ﬂux, the current, and the speed variation led to

the determination of an optimal ﬂux value for each operating

frequency. The implementation of this solution within the

CFW09 and CFW11 control algorithms allow that the motor

optimal ﬂux condition be automatically applied by the drive

throughout the speed range, resulting in a continuous

minimization of losses. As a consequence of this loss

minimization, the use of the optimal ﬂux control provides

higher efﬁciency and lower temperature rise. Therefore, the

torque derating factors for this operation condition are milder

than for constant V/f, as shown in ﬁgure 33.

The optimal ﬂux solution was developed for low

frequency applications with constant torque loads and

it should neither be used with variable torque loads nor

when the operating range includes points above the

base (rated) frequency. The Optimal Flux Solution

may be only applied under the following conditions:

The motor attends at least IE3 efﬁciency class;

The motor is fed by a WEG drive (CFW11, or CFW09

from version 2.40 or higher);

Sensorless vector control type is used.

TEFC Motors ODP Motors

2 poles 4 poles 6 poles 2 poles 4 poles 6 poles

0.25 7200 3600 2400 7200 3600 2400

0.33 7200 3600 2400 7200 3600 2400

0.50 7200 3600 2400 7200 3600 2400

0.75 7200 3600 2400 7200 3600 2400

1 7200 3600 2400 7200 3600 2400

1.5 7200 3600 2400 7200 3600 2400

2 7200 3600 2400 7200 3600 2400

3 7200 3600 2400 7200 3600 2400

5 7200 3600 2400 7200 3600 2400

7.5 5400 3600 2400 7200 3600 2400

10 5400 3600 2400 5400 3600 2400

15 5400 3600 2400 5400 3600 2400

20 5400 3600 2400 5400 3600 2400

25 5400 2700 2400 5400 2700 2400

30 5400 2700 2400 5400 2700 2400

40 4500 2700 2400 5400 2700 2400

50 4500 2700 2400 4500 2700 2400

60 3600 2700 2400 4500 2700 2400

75 3600 2700 2400 3600 2700 2400

100 3600 2700 1800 3600 2700 1800

125 3600 2700 1800 3600 2700 1800

150 3600 2700 1800 3600 2700 1800

200 3600 2250 1800 3600 2700 1800

250 3600 2250 1800 3600 2250 1800

300 3600 2250 1800 3600 2250 1800

350 3600 1800 1800 3600 2250 1800

400 3600 1800 - 3600 2250 -

450 3600 1800 - 3600 2250 -

500 3600 1800 - 3600 2250 -

Table 19 - Maximum safe operating speeds (rpm) for W22 motors driven by

VSD

Notes:

1 - The values in Table 19 are related to mechanical

limitations. For operation above nameplate speed, the

electrical limitations (motor torque capability) must be also

observed.

Blower cooling (use of an independent ventilation system);

Optimal Flux Solution

(exclusive to applications where

both motor and drive are WEG).

Torque derating criteria

In order to keep the temperature rise of WEG motors within

acceptable levels, when under VSD supply, the speed range-

related loadability limits established in ﬁgures 32 (for

operation under constant ﬂux condition) or 33 (for operation

under optimal ﬂux condition) must be observed.

for 105 K temperature rise for 80 K temperature rise

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W22 Electric Motor 23

12.3 Considerations regarding bearing currents

Motors up to frame size 280S/M generally do not require

special features with respect to the bearings for variable

speed drive application. From frame size 315S/M upwards

additional measures should be taken in order to avoid

detrimental bearing currents. This can be accomplished by

means of the use of an insulated bearing or an insulated hub

endshield in the non drive end side and a shaft grounding

brush mounted on the drive endshield. W22 motors are

normally supplied duly protected per such recommendations

when operation with VSD is mentioned at the time of

purchase. Otherwise, WEG can modify older motors that

were not originally supplied with such protection under

request.

12.4 Forced ventilation kit

For those cases where an independent cooling system is

required, the W22 motors can be supplied with a forced

ventilation kit, as shown in ﬁgure 34.

Figure 34 - Forced ventilation kit for W22 motors

When the forced ventilation kit is assembled on the motor in the

factory, the overall motor length will be as shown in table 21.

As a local stock modiﬁcation option, an alternative forced

ventilation kit can be ﬁtted. Please contact your local WEG

ofﬁce for details of these dimensions.

Table 20 - Forced ventilation dimensions

Frame size Poles

Total motor length (L)

Without forced ventilation With forced ventilation

90S All 304 548

L90S All 335 579

90L All 329 573

L90L All 360 604

100L All 376 646

L100L All 420 690

112M All 393 660

L112M All 423 690

132S All 452 715

132M All 490 753

132M/L All 515 778

160M All 598 855

160L All 642 899

180M All 664 908

180L All 702 946

200M All 729 976

200L All 767 1014

225S/M

2 856 1140

4/8 886 1170

250S/M

2 965 1217

4/8 965 1217

280S/M

2 1071 1348

4/8 1071 1348

315S/M

2 1244 1459

4/8 1274 1489

315L

2 1353 1568

4/8 1383 1598

355M/L

2 1412 1786

4/8 1482 1856

355A/B

2 1607 1981

4/8 1677 2051

12.5 Encoders

W22 motors may be supplied with encoders for speed

control in closed loop. Encoders can be ﬁtted to motors with

either forced ventilation or with shaft mounted cooling fan

(TEFC). When encoders are ﬁtted to TEFC machines, motors

may not have a second shaft end or be ﬁtted with drip cover.

The following models of encoder are available for supply:

g

Dynapar - HS35 - 1024ppr (hollow shaft)

g

Kübler - Model 5020 - 1024ppr (hollow shaft)

g

Hengstler - RI58 - 1024ppr (hollow shaft)

g

Line & Linde - XH861 - 1024ppr (hollow shaft)

g

Hubner Berlin - HOG 10 - 1024ppr (hollow shaft)

g

Hubner Guinsen - FGH4 - 1024ppr (shaft)

Other models can be supplied on request.

Note: The encoders described above are of the 1024 pulses

per revolution type. As on option, models of 2048 pulses per

revolution are available.

For more information on VSD motor applications, visit

our website (www.weg.net) and download the

Technical Guide - Induction motors fed by PWM

frequency inverters (code 028).

13. Tolerances for electrical data

The following tolerances are allowed in accordance with IEC

60034-1:

Efﬁciency (η)

-0.15 (1-η) for Pnom ≤ 150 kW /

-0.1 (1-η) for Pnom > 150 kW

Where η is a decimal number

Power factor

1 - cos Ø

Minimum 0.02 and Maximum 0.07

Slip ± 20% for Pnom ≥ 1 kW and ± 30 % for Pnom < 1 kW

Starting current 20% (without lower limit)

Starting torque - 15% + 25%

Breakdown torque - 10 %

Moment of inertia ± 10 %

Table 21 - Tolerances for electrical data

2 - The limits established in Table 19 are in accordance with

the Nema Std. MG 1 - Part 30.

3 - The permissible overspeed value is 10% above the limits

given in Table 19 (not to exceed 2 minutes in duration)

except where the maximum safe operating speed is the

same as the synchronous speed at 60 Hz - in such case,

please contact WEG.

4 - Operation above nameplate speed may require specially

reﬁned motor balancing. In such case, vibration and noise

limits per Nema MG1 Parts 7 and 9, respectively, are not

applicable.

5 - Bearing life will be affected by the length of time the motor

is operated at various speeds.

6 - For speeds and ratings not covered by the table above,

please contact WEG.

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W22 Electric Motor24

14. Construction features

Frame 63 71 80 90 100 112 132 160 180

Mechanical features

Mounting form B3T (options are available as per section 6)

Frame Material Cast iron FC-200

Degree of protection IP55

Grounding Simple grounding (one inside the terminal box and one on the frame)

Cooling method Totally enclosed fan cooled - IC411

Fan Material

2-4p

Polypropylene

6-8p

Fan cover Material Steel Cast iron FC-200

Endshields Material Cast iron FC-200

Drain hole Automatic plastic Fitted with rubber drain plug

Bearings

Clearance D.E ZZ C3

Clearance N.D.E ZZ Z-C3

Locking Without bearing cap and with preload washer at non-drive end

DE locating bearing with

bearing cap and with preload

washer at non-drive end

Drive end side

6201 6202

6204 6205 6206 6207 6308 6309 6311

4 - 8p

Non drive end

side

6203 6204 6205 6206 6207 6209 6211

4 - 8p

Bearing seal V’ring

Lubrication

Type of grease Mobil Polyrex EM

Grease ﬁtting Without grease ﬁtting

Terminal block With terminal block

Terminal box Material Cast iron FC-200

Leads inlet

Main Size 2 x M20 x 1.5 2 x M25 x 1.5 2 x M32 x 1.5 2 x M40 x 1.5

Plug Threaded plug for transport and storage; cable gland as optional

Accessory Size 1 x M20 x 1.5 lateral thread when ﬁtted with accessories

Shaft

Material AISI 1040/45

D.E. Threaded

hole

M4 M5 M6 M8 M10 M10 M12 M16

4 - 8p

Vibration Grade A

Balance With half key

Nameplate Material Stainless steel AISI 304

Painting

Type 207A 203A

Colour

Standard Efﬁciency motors (IE1): RAL 5007

High Efﬁciency motors (IE2): RAL 5009

Premium Efﬁciency motors (IE3): RAL 6002

Electrical features

Design N

Voltage 220-240/380-415//440-460 V 380-415/660//440-460 V

Winding

Material Copper

Impregnation Dip and bake

Insulation class F (DT 80K)

Service factor 1.00

Rotor Aluminium die cast

Thermal protector Without thermal protector

Thermistor PTC, 1 per

phase, for tripping at 155°C

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W22 Electric Motor 25

Frame 200 225S/M 250S/M 280S/M 315S/M 315L 355M/L 355A/B

Mechanical features

Mounting B3T

Frame Material Cast iron FC-200

Degree of protection IP55

Grounding

Simple grounding (one inside the terminal

box and one on the frame)

Double + additional (one inside the terminal box and three on the frame)

Cooling method Totally enclosed fan cooled - IC411

Fan Material

2p Polypropylene Aluminium

4-8p Polypropylene Aluminium

Fan cover Material Cast iron FC-200

Endshields Material Cast iron FC-200

Drain hole Fitted with rubber drain plug

Bearings

Clearance D.E C3

Clearance N.D.E Z-C3 C3

Locking

DE locating bearing with bearing cap and

with preload washer at non-drive end

Locked on drive end with internal and external bearing

cap and with preload springs on non drive end side

Drive end side

6312

6314 6314

6314 6314 6314 6316 6316

4 - 8p 6316 6319 6319 6322 6322

Non drive end

side

6212

6314 6314 6314 6314 6314

4 - 8p 6316 6316 6316 6319 6319

Bearing seal V’ring WSeal

Lubrication

Type of grease Mobil Polyrex EM

Grease ﬁtting Without grease ﬁtting With grease ﬁtting

Terminal block With terminal block HGF terminal block

Terminal box Material Cast iron FC-200

Leads inlet

Principal Size 2 x M50 x 1.5 2 x M63 x 1.5

2 x M63 x 1.5

(removable gland plate)

Plug Threaded plug for transportation and storage; cable gland as optional

Accessory Size 1 x M20 x 1.5 lateral thread when ﬁtted with accessories

Shaft

Material AISI 1040/45 AISI 4140

D.E. Threaded

hole

M20 M20 M20 M20 M20

M20 M20

4 - 8p M24 M24

Vibration Grade A

Balance With half key

Nameplate Material Stainless steel AISI 304

Painting

Type 203A

Colour

Standard Efﬁciency motors (IE1): RAL 5007

High Efﬁciency motors (IE2): RAL 5009

Premium Efﬁciency motors (IE3): RAL 6002

Electrical features

Design N

Voltage 380-415/660//440-460 V

Winding

Material Copper

Impregnation Dip and bake Continuous ﬂow impregnation

Insulation class F (DT 80K)

Service factor 1.00

Rotor Aluminium die cast

Thermal protector Thermistor PTC, 1 per phase, for tripping at 155°C

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W22 Electric Motor26

15. Optional features

Frame 63 71 80 90 100 112 132 160 180 200 225S/M 250S/M 280S/M 315S/M 315L 355M/L 355A/B

Mechanical optionals Mechanical optionals

Terminal box Terminal box

Additional terminal box O O O O O O O O O O O O O O O O O

Terminal box with removable base NA NA NA NA NA NA NA NA NA NA O O O O S S S

Gland plate O O O O O O O O O O O O O O O O O

Epoxy compound on leads entry O O O O O O O O O O NA NA NA NA NA NA NA

Self-extinguishing foam

at lead entry

S S S S S S S

S S S S S S S S S S

Terminal block Terminal block

BMC terminal block - six-pin S S S S S S S S S S S S S S S S NA

BMC terminal block - twelve-pin NA NA NA O O O O O O O O O O O O O NA

HGF connection terminals NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA S

Cable glands Cable glands

Plastic cable gland O O O O O O O O O O O O O O O O O

Brass cable gland O O O O O O O O O O O O O O O O O

Stainless steel cable gland NA NA NA O O O O O O O O O O O O O O

Flange Flange

Flange FF O O O O O O O O O O O O O O O O O

Flange FF (Superior) O O O O O O O O O O NA NA O NA NA NA NA

Flange FF (Inferior) NA O O O O O O O O O O O NA O O NA NA

Flange C-DIN O O O O O O O NA NA NA NA NA NA NA NA NA NA

Flange C-DIN (Superior) O O O O O O O NA NA NA NA NA NA NA NA NA NA

Flange C-DIN (Inferior) NA O O O O O O NA NA NA NA NA NA NA NA NA NA

Flange C O O O O O O O O O O O O O O O O NA

Flange C (Superior) O O O NA O NA NA NA O O NA NA O NA NA NA NA

Flange C (Inferior) NA NA NA O NA O O NA NA NA NA O NA O O NA NA

Fan Fan

Polypropylene (2 and 4 poles) S S S S S S S S S S S S S S S S NA

Polypropylene (6 and 8 poles) S S S S S S S S S S S S S S NA NA NA

Conductive plastic O O O O O O O O O O O O O O NA NA NA

Aluminium (2 and 4 poles) O O O O O O O O O O O O O O O O S

Aluminium (6 and 8 poles) O O O O O O O O O O O O O O S S S

Cast iron O O O O O O O O O O O O O O O O O

Bearing Bearing

Ball bearing (D.E) S S S S S S S S S S S S S S S S S

Roller bearing (D.E) NA NA NA NA NA NA NA O O O O O O O O O O

Ball bearing (N.D.E) S S S S S S S S S S S S S S S S S

Insulated drive end bearing NA NA NA NA NA NA NA NA NA NA O O O O O O O

Insulated non drive end bearing NA NA NA NA NA NA NA NA NA NA O O O O O O O

Bearing cap Bearing cap

Without bearing cap S S S S S S S NA NA NA NA NA NA NA NA NA NA

With bearing cap NA O O O O O O S S S S S S S S S S

Bearing sealing Bearing sealing

Nitrillic rubber lip seal O O O O O O O O O O O O O NA NA NA NA

Nitrillic rubber oil seal O O O O O O O O O O O O O NA NA NA NA

Nitrillic rubber oil

seal double lip

O O O O O O O

O O O O O O NA NA NA NA

Viton seal O O O O O O O O O O O O O O O O O

Viton oil seal O O O O O O O O O O O O O O O O O

Viton oil seal with

stainless steel spring

O O O O O O O

O O O O O O O O O O

Taconite Labyrinth NA NA NA O O O O O O O O O O O O O O

W3 Seal

NA NA NA O O O O O O O O O O O O O O

Notes: 1) Other optional features, on request.

2) Some combinations of optional features are not allowed - then contact WEG.

S (Standard)

NA (Not available)

O (Optional)

www.weg.net

W22 Electric Motor 27

Frame 63 71 80 90 100 112 132 160 180 200 225S/M 250S/M 280S/M 315S/M 315L 355M/L 355A/B

Mechanical optionals Mechanical optionals

Terminal box Terminal box

Additional terminal box O O O O O O O O O O O O O O O O O

Terminal box with removable base NA NA NA NA NA NA NA NA NA NA O O O O S S S

Gland plate O O O O O O O O O O O O O O O O O

Epoxy compound on leads entry O O O O O O O O O O NA NA NA NA NA NA NA

Self-extinguishing foam

at lead entry

S S S S S S S

S S S S S S S S S S

Terminal block Terminal block

BMC terminal block - six-pin S S S S S S S S S S S S S S S S NA

BMC terminal block - twelve-pin NA NA NA O O O O O O O O O O O O O NA

HGF connection terminals NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA S

Cable glands Cable glands

Plastic cable gland O O O O O O O O O O O O O O O O O

Brass cable gland O O O O O O O O O O O O O O O O O

Stainless steel cable gland NA NA NA O O O O O O O O O O O O O O

Flange Flange

Flange FF O O O O O O O O O O O O O O O O O

Flange FF (Superior) O O O O O O O O O O NA NA O NA NA NA NA

Flange FF (Inferior) NA O O O O O O O O O O O NA O O NA NA

Flange C-DIN O O O O O O O NA NA NA NA NA NA NA NA NA NA

Flange C-DIN (Superior) O O O O O O O NA NA NA NA NA NA NA NA NA NA

Flange C-DIN (Inferior) NA O O O O O O NA NA NA NA NA NA NA NA NA NA

Flange C O O O O O O O O O O O O O O O O NA

Flange C (Superior) O O O NA O NA NA NA O O NA NA O NA NA NA NA

Flange C (Inferior) NA NA NA O NA O O NA NA NA NA O NA O O NA NA

Fan Fan

Polypropylene (2 and 4 poles) S S S S S S S S S S S S S S S S NA

Polypropylene (6 and 8 poles) S S S S S S S S S S S S S S NA NA NA

Conductive plastic O O O O O O O O O O O O O O NA NA NA

Aluminium (2 and 4 poles) O O O O O O O O O O O O O O O O S

Aluminium (6 and 8 poles) O O O O O O O O O O O O O O S S S

Cast iron O O O O O O O O O O O O O O O O O

Bearing Bearing

Ball bearing (D.E) S S S S S S S S S S S S S S S S S

Roller bearing (D.E) NA NA NA NA NA NA NA O O O O O O O O O O

Ball bearing (N.D.E) S S S S S S S S S S S S S S S S S

Insulated drive end bearing NA NA NA NA NA NA NA NA NA NA O O O O O O O

Insulated non drive end bearing NA NA NA NA NA NA NA NA NA NA O O O O O O O

Bearing cap Bearing cap

Without bearing cap S S S S S S S NA NA NA NA NA NA NA NA NA NA

With bearing cap NA O O O O O O S S S S S S S S S S

Bearing sealing Bearing sealing

Nitrillic rubber lip seal O O O O O O O O O O O O O NA NA NA NA

Nitrillic rubber oil seal O O O O O O O O O O O O O NA NA NA NA

Nitrillic rubber oil

seal double lip

O O O O O O O

O O O O O O NA NA NA NA

Viton seal O O O O O O O O O O O O O O O O O

Viton oil seal O O O O O O O O O O O O O O O O O

Viton oil seal with

stainless steel spring

O O O O O O O

O O O O O O O O O O

Taconite Labyrinth NA NA NA O O O O O O O O O O O O O O

W3 Seal

NA NA NA O O O O O O O O O O O O O O

www.weg.net

W22 Electric Motor28

Frame 63 71 80 90 100 112 132 160 180 200 225S/M 250S/M 280S/M 315S/M 315L 355M/L 355A/B

Other sealing Other sealing

Joints sealing with Loctite 5923 (Permatex) O O O O O O O O O O O O O O O O O

Bolt with Loctite 5923 (Permatex) O O O O O O O O O O O O O O O O O

Shaft Shaft

AISI 1040/45 S S S S S S S S S S S S S S NA NA NA

AISI 4140 O O O O O O O O O O O O O O S S S

AISI 304 (stainless steel) O O O O O O O O O O O O O O O O O

AISI 316 (stainless steel) O O O O O O O O O O O O O O O O O

AISI 420 (stainless steel) O O O O O O O O O O O O O O O O O

Locking shaft device (standard for roller bearing motors) NA NA NA NA NA NA NA O O O O O O O O O O

Second shaft end O O O O O O O O O O O O O O O O O

Tapped center hole S S S S S S S S S S S S S S S S S

Degree of protection Degree of protection

IP56 O O O O O O O O O O O O O O O O O

IP65 O O O O O O O O O O O O O O O O O

IP66 O O O O O O O O O O O O O O O O O

Painting plan Painting plan

202E

Primer: One coat with 20 to 55 mm of alkyd oxide red

Intermediate: One coat with 20 to 30 mm of isocyanate epoxy paint

Finishing: One coat with 100 to 140 mm of epoxy paint N2628

Recommended for pulp and paper, mining and chemical industries

O O O O O O O

O O O O O O O O O O

202P

Primer: One coat with 20 to 55 mm of alkyd oxide red

Intermediate: One coat with 20 to 30 mm of isocyanate epoxy paint

Finishing: One coat with 70 to 100 mm of polyurethane paint N2677

Recommended for food processing industries.

O O O O O O O

O O O O O O O O O O

211E

Primer: One coat with 100 to 140 mm of epoxy paint N2630.

Finishing: One coat with 100 to 140 mm of epoxy paint N2628

Recommended for motors supplied to Petrobras and its suppliers,

to be used in reﬁ neries such as petrochemical industries that follow

Petrobras speciﬁ cations

Note: Meets Petrobras N 1735 Standard (condition 3)

O O O O O O O

O O O O O O O O O O

211P

Primer: One coat with 100 to 140 mm of epoxy paint N2630

Finishing: One coat with 70 to 100 mm of PU paint N2677

Recommended for motors supplied to Petrobras and its suppliers,

to be used in reﬁ neries such as petrochemical industries that follow

Petrobras speciﬁ cations

Note: Meets Petrobras N 1735 Standard (condition 3)

O O O O O O O

O O O O O O O O O O

212E

Primer: One coat with 75 to 105 mm of epoxy paint N1277

Intermediate: One coat with 100 to 140 mm of epoxy paint N2630

Finishing: One coat with 100 to 140 mm of epoxy paint N2628

Recommended for applications in pulp and paper, mining, chemical

and petrochemical industries

Not: Meets Petrobras N 1735 Standard (condition 4)

O O O O O O O

O O O O O O O O O O

212P

Primer: One coat with 75 to 105 mm of epoxy paint N1277

Intermediate: One coat with 100 to 140 mm of epoxy paint N2630

Finishing: One coat with 70 to 100 mm of PU paint N2677

Recommended for applications in pulp and paper, mining, chemical

and petrochemical industries

Note: Meets Petrobras N 1735 Standard (condition 4)

O O O O O O O

O O O O O O O O O O

Notes: 1) Other optional features, on request.

2) Some combinations of optional features are not allowed - then contact WEG.

S (Standard)

NA (Not available)

O (Optional)

www.weg.net

W22 Electric Motor 29

Frame 63 71 80 90 100 112 132 160 180 200 225S/M 250S/M 280S/M 315S/M 315L 355M/L 355A/B

Other sealing Other sealing

Joints sealing with Loctite 5923 (Permatex) O O O O O O O O O O O O O O O O O

Bolt with Loctite 5923 (Permatex) O O O O O O O O O O O O O O O O O

Shaft Shaft

AISI 1040/45 S S S S S S S S S S S S S S NA NA NA

AISI 4140 O O O O O O O O O O O O O O S S S

AISI 304 (stainless steel) O O O O O O O O O O O O O O O O O

AISI 316 (stainless steel) O O O O O O O O O O O O O O O O O

AISI 420 (stainless steel) O O O O O O O O O O O O O O O O O

Locking shaft device (standard for roller bearing motors) NA NA NA NA NA NA NA O O O O O O O O O O

Second shaft end O O O O O O O O O O O O O O O O O

Tapped center hole S S S S S S S S S S S S S S S S S

Degree of protection Degree of protection

IP56 O O O O O O O O O O O O O O O O O

IP65 O O O O O O O O O O O O O O O O O

IP66 O O O O O O O O O O O O O O O O O

Painting plan Painting plan

202E

Primer: One coat with 20 to 55 mm of alkyd oxide red

Intermediate: One coat with 20 to 30 mm of isocyanate epoxy paint

Finishing: One coat with 100 to 140 mm of epoxy paint N2628

Recommended for pulp and paper, mining and chemical industries

O O O O O O O

O O O O O O O O O O

202P

Primer: One coat with 20 to 55 mm of alkyd oxide red

Intermediate: One coat with 20 to 30 mm of isocyanate epoxy paint

Finishing: One coat with 70 to 100 mm of polyurethane paint N2677

Recommended for food processing industries.

O O O O O O O

O O O O O O O O O O

211E

Primer: One coat with 100 to 140 mm of epoxy paint N2630.

Finishing: One coat with 100 to 140 mm of epoxy paint N2628

Recommended for motors supplied to Petrobras and its suppliers,

to be used in reﬁ neries such as petrochemical industries that follow

Petrobras speciﬁ cations

Note: Meets Petrobras N 1735 Standard (condition 3)

O O O O O O O

O O O O O O O O O O

211P

Primer: One coat with 100 to 140 mm of epoxy paint N2630

Finishing: One coat with 70 to 100 mm of PU paint N2677

Recommended for motors supplied to Petrobras and its suppliers,

to be used in reﬁ neries such as petrochemical industries that follow

Petrobras speciﬁ cations

Note: Meets Petrobras N 1735 Standard (condition 3)

O O O O O O O

O O O O O O O O O O

212E

Primer: One coat with 75 to 105 mm of epoxy paint N1277

Intermediate: One coat with 100 to 140 mm of epoxy paint N2630

Finishing: One coat with 100 to 140 mm of epoxy paint N2628

Recommended for applications in pulp and paper, mining, chemical

and petrochemical industries

Not: Meets Petrobras N 1735 Standard (condition 4)

O O O O O O O

O O O O O O O O O O

212P

Primer: One coat with 75 to 105 mm of epoxy paint N1277

Intermediate: One coat with 100 to 140 mm of epoxy paint N2630

Finishing: One coat with 70 to 100 mm of PU paint N2677

Recommended for applications in pulp and paper, mining, chemical

and petrochemical industries

Note: Meets Petrobras N 1735 Standard (condition 4)

O O O O O O O

O O O O O O O O O O

www.weg.net

W22 Electric Motor30

Frame 63 71 80 90 100 112 132 160 180 200 225S/M 250S/M 280S/M 315S/M 315L 355M/L 355A/B

213E

Primer: One coat with 75 to 90 mm of Silicate Ethyl paint N1661

Intermediate: One coat with 35 to 50 mm of epoxy paint N1202

Finishing: One coat with 240 to 340 mm of epoxy paint N2628

Recommended for off-shore oil platform

Note: Meets Petrobras N 1374 Standard (condition 5.2)

O O O O O O O

O O O O O O O O O O

Inside of terminal box painted (Munsell 2.5 YR 6/14) O O O O O O O O O O O O O O O O O

Inside epoxy painting (Tropicallized) O O O O O O O O O O O O O O O O O

Lubrication Lubrication

Mobil Polyrex

EM S S S S S S S S S S S S S S S S S

Aeroshell 7 O O O O O O O O O O O O O O O O O

Isoﬂex NBU-15 O O O O O O O O O O O O O O O O O

Grease nipple Grease nipple

Carbon steel grease nipple NA NA NA NA NA NA NA O O O S S S S S S S

Stainless steel grease nipple NA NA NA NA NA NA NA O O O O O O O O O O

Balance Balance

Balance with half key NA NA S* S S S S S S S S S S S S S S

Vibration Vibration

Grade A S S S S S S S S S S S S S S S S S

Grade B O O O O O O O O O O O O O O O O O

Suitable to take vibration detector SPM

(1 x hole M8 on D.E. and N.D.E. shield for vertical reading)

NA NA NA NA NA NA NA

O O O O O O O O O O

Drain Drain

Rubber drain plug NA NA NA NA NA NA NA S S S S S S S S S S

Plastic drain plug (open) - Automatic S S S S S S S NA NA NA NA NA NA NA NA NA NA

Plastic drain plug (close) O O O O O O O NA NA NA NA NA NA NA NA NA NA

Threaded drain plug O O O O O O O O O O O O O O O O O

Stainless steel drain plug O O O O O O O O O O O O O O O O O

T type drain plug O O O O O O O O O O O O O O O O O

Other mechanical optionals Other mechanical optionals

Drip cover (recommended for vertical shaft down applications) O O O O O O O O O O O O O O O O NA

Rubber slinger (recommended for vertical shaft up applications) NA NA NA O O O O O O O O O O O O O O

Stainless steel hardware O O O O O O O O O O O O O O O O O

Grease outlet through the endshield NA NA NA NA NA NA NA NA NA NA O O O O O O O

Notes: 1) Other optional features, on request.

2) Some combinations of optional features are not allowed - then contact WEG.

(*) 4 poles and upwards

S (Standard)

NA (Not available)

O (Optional)

www.weg.net

W22 Electric Motor 31

Frame 63 71 80 90 100 112 132 160 180 200 225S/M 250S/M 280S/M 315S/M 315L 355M/L 355A/B

213E

Primer: One coat with 75 to 90 mm of Silicate Ethyl paint N1661

Intermediate: One coat with 35 to 50 mm of epoxy paint N1202

Finishing: One coat with 240 to 340 mm of epoxy paint N2628

Recommended for off-shore oil platform

Note: Meets Petrobras N 1374 Standard (condition 5.2)

O O O O O O O

O O O O O O O O O O

Inside of terminal box painted (Munsell 2.5 YR 6/14) O O O O O O O O O O O O O O O O O

Inside epoxy painting (Tropicallized) O O O O O O O O O O O O O O O O O

Lubrication Lubrication

Mobil Polyrex

EM S S S S S S S S S S S S S S S S S

Aeroshell 7 O O O O O O O O O O O O O O O O O

Isoﬂex NBU-15 O O O O O O O O O O O O O O O O O

Grease nipple Grease nipple

Carbon steel grease nipple NA NA NA NA NA NA NA O O O S S S S S S S

Stainless steel grease nipple NA NA NA NA NA NA NA O O O O O O O O O O

Balance Balance

Balance with half key NA NA S* S S S S S S S S S S S S S S

Vibration Vibration

Grade A S S S S S S S S S S S S S S S S S

Grade B O O O O O O O O O O O O O O O O O

Suitable to take vibration detector SPM

(1 x hole M8 on D.E. and N.D.E. shield for vertical reading)

NA NA NA NA NA NA NA

O O O O O O O O O O

Drain Drain

Rubber drain plug NA NA NA NA NA NA NA S S S S S S S S S S

Plastic drain plug (open) - Automatic S S S S S S S NA NA NA NA NA NA NA NA NA NA

Plastic drain plug (close) O O O O O O O NA NA NA NA NA NA NA NA NA NA

Threaded drain plug O O O O O O O O O O O O O O O O O

Stainless steel drain plug O O O O O O O O O O O O O O O O O

T type drain plug O O O O O O O O O O O O O O O O O

Other mechanical optionals Other mechanical optionals

Drip cover (recommended for vertical shaft down applications) O O O O O O O O O O O O O O O O NA

Rubber slinger (recommended for vertical shaft up applications) NA NA NA O O O O O O O O O O O O O O

Stainless steel hardware O O O O O O O O O O O O O O O O O

Grease outlet through the endshield NA NA NA NA NA NA NA NA NA NA O O O O O O O

www.weg.net

W22 Electric Motor32

Frame 63 71 80 90 100 112 132 160 180 200 225S/M 250S/M 280S/M 315S/M 315L 355M/L 355A/B

Electrical optionals Electrical optionals

Winding thermal protection Winding thermal protection

Bimetallic alarm thermal protector O O O O O O O O O O O O O O O O O

Bimetallic tripping thermal protector O O O O O O O O O O O O O O O O O

PT100 two wires, one per phase O O O O O O O O O O O O O O O O O

PT100 two wires, two per phase NA NA NA NA NA NA NA NA NA NA O O O O O O O

PT100 three wires, one per phase O O O O O O O O O O O O O O O O O

PT100 three wires, two per phase NA NA NA NA NA NA NA NA NA NA O O O O O O O

Alarm thermistor O O O O O O O O O O O O O O O O O

Tripping thermistor O O O O O O O S S S S S S S S S S

Bearing thermal protection Bearing thermal protection

Bimetallic thermal protector NA NA NA NA NA NA NA O O O O O O O O O O

Thermistor NA NA NA NA NA NA NA O O O O O O O O O O

Pt-100 two wires NA NA NA NA NA NA NA O O O O O O O O O O

Pt-100 three wires NA NA NA NA NA NA NA O O O O O O O O O O

Pt-100 three wires (calibrated) NA NA NA NA NA NA NA O O O O O O O O O O

Space heaters Space heaters

110-127 V O O O O O O O O O O O O O O O O O

220-240 V O O O O O O O O O O O O O O O O O

110-127 / 220-240 V NA NA NA NA NA O O O O O O O O O O O O

380-480 V O O O O O O O O O O O O O O O O O

Rotation direction Rotation direction

Both S S S S S S S S S S S S S S S S S

Clockwise rotation direction O O O O O O O O O O O O O O O O O

Counter clockwise rotation direction O O O O O O O O O O O O O O O O O

Nameplate with indication of rotation

direction

O O O O O O O

O O O O O O O O O O

Connection leads Connection leads

Leads connection at highest voltage

(available only for motors ﬁtted with

terminal block)

O O O O O O O

O O O O O O O O O O

Leads connection at lowest voltage

(available only for motors ﬁtted with

terminal block)

S S S S S S S

S S S S S S S S S S

Service factor Service factor

Service factor 1.00 S S S S S S S S S S S S S S S S S

Service factor 1.15 O O O O O O O O O O O O O O O O O

Insulation class Insulation class

F S S S S S S S S S S S S S S S S S

H O O O O O O O O O O O O O O O O O

Forced ventilation kit Forced ventilation kit

Forced ventilation kit with enconder

provision (inform auxiliary motor voltage)

NA NA NA O O O O

O O O O O O O O O O

Forced ventilation kit without encoder

provision (informe auxiliary motor voltage)

NA NA NA O O O O

O O O O O O O O O O

Encoder NA NA NA O O O O O O O O O O O O O O

Drive end side grounding brush NA NA NA NA NA NA NA NA NA NA NA NA NA O O O O

Non drive end side grounding brush NA NA NA NA NA NA NA NA NA NA O O O O O O O

Notes: 1) Other optional features, on request.

2) Some combinations of optional features are not allowed - then contact WEG.

S (Standard)

NA (Not available)

O (Optional)

www.weg.net

W22 Electric Motor 33

Frame 63 71 80 90 100 112 132 160 180 200 225S/M 250S/M 280S/M 315S/M 315L 355M/L 355A/B

Electrical optionals Electrical optionals

Winding thermal protection Winding thermal protection

Bimetallic alarm thermal protector O O O O O O O O O O O O O O O O O

Bimetallic tripping thermal protector O O O O O O O O O O O O O O O O O

PT100 two wires, one per phase O O O O O O O O O O O O O O O O O

PT100 two wires, two per phase NA NA NA NA NA NA NA NA NA NA O O O O O O O

PT100 three wires, one per phase O O O O O O O O O O O O O O O O O

PT100 three wires, two per phase NA NA NA NA NA NA NA NA NA NA O O O O O O O

Alarm thermistor O O O O O O O O O O O O O O O O O

Tripping thermistor O O O O O O O S S S S S S S S S S

Bearing thermal protection Bearing thermal protection

Bimetallic thermal protector NA NA NA NA NA NA NA O O O O O O O O O O

Thermistor NA NA NA NA NA NA NA O O O O O O O O O O

Pt-100 two wires NA NA NA NA NA NA NA O O O O O O O O O O

Pt-100 three wires NA NA NA NA NA NA NA O O O O O O O O O O

Pt-100 three wires (calibrated) NA NA NA NA NA NA NA O O O O O O O O O O

Space heaters Space heaters

110-127 V O O O O O O O O O O O O O O O O O

220-240 V O O O O O O O O O O O O O O O O O

110-127 / 220-240 V NA NA NA NA NA O O O O O O O O O O O O

380-480 V O O O O O O O O O O O O O O O O O

Rotation direction Rotation direction

Both S S S S S S S S S S S S S S S S S

Clockwise rotation direction O O O O O O O O O O O O O O O O O

Counter clockwise rotation direction O O O O O O O O O O O O O O O O O

Nameplate with indication of rotation

direction

O O O O O O O

O O O O O O O O O O

Connection leads Connection leads

Leads connection at highest voltage

(available only for motors ﬁtted with

terminal block)

O O O O O O O

O O O O O O O O O O

Leads connection at lowest voltage

(available only for motors ﬁtted with

terminal block)

S S S S S S S

S S S S S S S S S S

Service factor Service factor

Service factor 1.00 S S S S S S S S S S S S S S S S S

Service factor 1.15 O O O O O O O O O O O O O O O O O

Insulation class Insulation class

F S S S S S S S S S S S S S S S S S

H O O O O O O O O O O O O O O O O O

Forced ventilation kit Forced ventilation kit

Forced ventilation kit with enconder

provision (inform auxiliary motor voltage)

NA NA NA O O O O

O O O O O O O O O O

Forced ventilation kit without encoder

provision (informe auxiliary motor voltage)

NA NA NA O O O O

O O O O O O O O O O

Encoder NA NA NA O O O O O O O O O O O O O O

Drive end side grounding brush NA NA NA NA NA NA NA NA NA NA NA NA NA O O O O

Non drive end side grounding brush NA NA NA NA NA NA NA NA NA NA O O O O O O O

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W22 Electric Motor34

Output

Frame

Full load

torque

(Nm)

Locked

rotor

current

II/In

Locked

rotor

torque

TI/Tn

Break-

down

torque

Tb/Tn

Inertia

J (kgm

Allowable locked

rotor time (s)

Weight

(kg)

Sound

dB (A)

400 V

Rated

speed

(rpm)

% of full load

Efﬁciency Power factor

Full load

current

In (A)

kW HP Hot Cold

50 75 100 50 75 100

II Pole - 3000 rpm - 50 Hz

W22 - Standard Efﬁciency

Exceeds IE1

(1)

- EFF2

(2)

16. Electrical data

0.12 0.16 63 0.420 3.8 2.3 2.3 0.00010 27 59 4.3 52.0 2720 45.5 53.5 56.0 0.55 0.68 0.80 0.387 0.12 0.16 2690 48.0 55.0 58.8 0.59 0.74 0.84 0.369 2735 43.0 51.0 53.5 0.52 0.64 0.75 0.416

0.18 0.25 63 0.630 4.2 2.4 2.3 0.00010 30 66 4.7 52.0 2730 50.5 56.5 59.0 0.55 0.69 0.80 0.550 0.18 0.25 2700 52.5 57.5 59.5 0.60 0.75 0.85 0.541 2750 47.8 54.5 58.0 0.52 0.64 0.76 0.568

0.25 0.33 63 0.880 4.3 2.5 2.3 0.00010 25 55 5.1 52.0 2720 52.0 57.0 60.0 0.50 0.65 0.76 0.791 0.25 0.33 2685 54.0 59.0 60.0 0.56 0.71 0.81 0.782 2740 50.0 55.5 59.9 0.47 0.60 0.72 0.806

0.37 0.5 71 1.29 4.6 2.3 2.4 0.00030 16 35 5.5 56.0 2730 62.0 66.5 67.0 0.60 0.75 0.84 0.949 0.37 0.5 2700 64.6 67.5 66.6 0.67 0.81 0.88 0.959 2750 59.1 64.9 66.6 0.55 0.70 0.80 0.966

0.55 0.75 71 1.94 4.5 2.2 2.2 0.00030 13 29 6.5 56.0 2710 65.0 67.0 68.0 0.68 0.81 0.89 1.31 0.55 0.75 2665 66.4 67.0 66.5 0.74 0.86 0.91 1.38 2735 63.4 66.5 68.4 0.63 0.77 0.86 1.30

0.75 1 80 2.60 5.1 2.5 2.6 0.00060 14 31 9.5 59.0 2760 68.5 72.0 72.1 0.62 0.76 0.84 1.79 0.75 1 2730 70.8 72.7 72.1 0.69 0.82 0.88 1.80 2775 66.2 70.6 72.1 0.56 0.70 0.80 1.82

1.1 1.5 80 3.79 5.9 2.9 2.9 0.00080 14 31 13.5 59.0 2775 74.0 76.0 76.0 0.65 0.78 0.85 2.46 1.1 1.5 2750 75.3 76.3 75.6 0.71 0.83 0.89 2.48 2790 72.2 75.0 75.9 0.58 0.72 0.81 2.49

1.5 2 90S 5.05 6.3 2.7 2.6 0.0017 7 15 15.0 64.0 2840 77.5 78.5 78.5 0.63 0.76 0.83 3.32 1.5 2 2820 78.5 79.1 79.1 0.70 0.81 0.87 3.31 2855 75.5 77.9 78.3 0.57 0.71 0.80 3.29

2.2 3 90L 7.48 6.8 2.8 2.9 0.0022 9 20 16.7 64.0 2810 81.0 81.5 81.5 0.63 0.77 0.85 4.58 2.2 3 2790 81.0 81.5 81.5 0.70 0.82 0.88 4.66 2820 80.5 81.3 81.3 0.57 0.72 0.82 4.58

3 4 100L 10.0 6.7 2.3 2.8 0.0052 9 20 23.5 67.0 2870 81.5 82.0 82.0 0.69 0.81 0.87 6.07 3 4 2855 82.4 83.0 83.0 0.75 0.85 0.89 6.17 2880 80.5 82.4 83.5 0.64 0.77 0.84 5.95

4 5.5 112M 13.3 6.8 2.4 3.0 0.0073 9 20 31.0 64.0 2875 82.0 84.0 85.0 0.71 0.82 0.87 7.81 4 5.5 2860 83.0 84.2 84.5 0.77 0.86 0.89 8.08 2885 80.8 83.4 84.8 0.66 0.78 0.85 7.72

5.5 7.5 132S 18.1 6.5 2.4 3.0 0.0159 11 24 42.0 68.0 2910 85.0 86.0 86.0 0.71 0.81 0.87 10.6 5.5 7.5 2895 85.4 86.0 86.0 0.77 0.85 0.89 10.9 2915 84.0 85.5 86.0 0.66 0.78 0.84 10.5

7.5 10 132S 24.7 6.4 2.3 2.6 0.0187 11 24 53.0 68.0 2900 85.5 86.5 86.5 0.72 0.82 0.87 14.4 7.5 10 2890 86.3 86.5 86.5 0.78 0.86 0.89 14.8 2910 84.5 86.0 86.5 0.66 0.78 0.84 14.2

9.2 12.5 132M 30.2 7.5 2.7 3.1 0.0243 8 18 58.0 68.0 2910 87.0 87.5 87.5 0.70 0.81 0.86 17.6 9.2 12.5 2900 87.9 88.0 88.0 0.76 0.85 0.89 17.8 2915 85.8 87.5 87.9 0.63 0.76 0.83 17.4

11 15 160M 35.9 6.8 2.0 2.7 0.0282 11 24 97.0 67.0 2930 87.8 88.6 88.4 0.70 0.81 0.86 20.9 11 15 2920 88.4 88.7 88.1 0.76 0.85 0.88 21.6 2935 87.1 88.3 88.4 0.65 0.77 0.84 20.6

15 20 160M 48.9 7.2 2.2 2.8 0.0363 9 20 108 67.0 2930 89.5 89.8 89.5 0.71 0.81 0.86 28.1 15 20 2945 89.9 89.8 89.1 0.76 0.84 0.88 29.1 2935 89.0 89.7 89.6 0.67 0.78 0.84 27.7

18.5 25 160L 60.1 7.8 2.4 3.1 0.0446 7 15 122 67.0 2940 90.3 90.7 90.3 0.70 0.80 0.86 34.4 18.5 25 2935 90.8 90.8 90.1 0.75 0.84 0.88 35.5 2945 89.7 90.4 90.3 0.65 0.76 0.84 33.9

22 30 180M 71.6 7.3 2.2 3.1 0.0867 7 15 156 67.0 2935 90.7 91.0 90.8 0.76 0.84 0.88 39.7 22 30 2925 90.9 90.8 90.3 0.80 0.86 0.89 41.6 2940 90.4 91.0 91.0 0.73 0.82 0.87 38.7

30 40 200L 96.8 6.3 2.1 2.4 0.1532 18 40 220 72.0 2960 91.6 92.0 91.6 0.76 0.84 0.87 54.3 30 40 2955 91.8 91.9 91.2 0.80 0.86 0.88 56.8 2965 91.3 92.0 91.8 0.72 0.81 0.86 52.9

37 50 200L 120 6.5 2.2 2.4 0.1780 16 35 232 72.0 2950 92.0 92.5 92.0 0.76 0.84 0.87 66.7 37 50 2945 92.2 92.4 91.6 0.80 0.87 0.88 69.7 2950 91.7 92.4 92.1 0.72 0.81 0.85 65.8

45 60 225S/M 145 6.9 2.0 2.8 0.3226 10 22 356 75.0 2960 91.8 92.6 92.4 0.78 0.86 0.89 79.0 45 60 2955 91.9 92.5 92.5 0.82 0.88 0.90 82.1 2960 91.6 92.6 92.4 0.75 0.84 0.88 77.0

55 75 250S/M 178 6.7 2.0 2.7 0.3214 12 26 413 75.0 2960 92.2 93.0 92.8 0.79 0.86 0.89 96.1 55 75 2955 92.3 92.9 92.5 0.83 0.88 0.90 100 2965 91.9 93.0 92.8 0.75 0.84 0.87 94.8

75 100 280S/M 241 6.8 1.8 2.8 0.8492 28 62 630 77.0 2975 92.5 93.5 93.3 0.78 0.86 0.88 132 75 100 2970 92.7 93.5 93.1 0.81 0.88 0.89 138 2980 92.2 93.4 93.3 0.75 0.84 0.87 129

90 125 280S/M 289 7.0 2.0 2.8 0.9804 20 44 664 77.0 2975 93.0 93.8 93.7 0.80 0.87 0.89 156 90 125 2970 93.1 93.7 93.5 0.83 0.89 0.90 162 2980 92.8 93.7 93.7 0.77 0.85 0.88 152

110 150 315S/M 353 6.8 1.8 2.7 0.8810 26 57 848 77.0 2980 93.3 94.3 94.0 0.78 0.85 0.88 192 110 150 2975 93.6 94.4 93.9 0.82 0.87 0.89 200 2980 93.0 94.2 94.0 0.75 0.83 0.87 187

132 175 315S/M 423 6.7 1.8 2.6 0.9663 24 53 879 77.0 2980 93.5 94.3 94.3 0.79 0.86 0.89 227 132 175 2975 93.8 94.2 94.1 0.83 0.88 0.90 237 2980 93.2 94.3 94.4 0.76 0.84 0.88 221

150 200 315S/M 482 7.0 2.2 3.0 1.13 20 44 880 77.0 2975 94.0 94.5 94.5 0.77 0.85 0.87 263 150 200 2975 94.2 94.5 94.5 0.80 0.85 0.88 274 2980 94.5 94.7 94.7 0.75 0.82 0.86 256

160 220 315S/M 513 7.6 2.0 2.8 1.18 21 46 950 77.0 2980 94.0 94.5 94.5 0.80 0.87 0.90 272 160 220 2975 94.2 94.5 94.4 0.83 0.89 0.91 283 2980 93.8 94.4 94.5 0.77 0.85 0.89 265

185 250 315S/M 593 7.7 2.0 2.8 1.29 14 31 993 77.0 2980 94.4 94.6 94.6 0.77 0.84 0.88 321 185 250 2975 94.6 94.6 94.5 0.80 0.86 0.89 334 2980 94.2 94.5 94.6 0.74 0.82 0.87 313

200 270 315L 641 7.7 2.1 2.8 2.17 17 37 1135 78.0 2980 94.4 94.7 94.6 0.80 0.87 0.90 339 200 270 2980 94.5 94.7 94.6 0.83 0.89 0.91 353 2980 94.2 94.6 94.6 0.77 0.85 0.89 330

220 300 315L 705 8.0 2.3 2.8 3.21 14 31 1224 78.0 2980 94.5 94.8 94.7 0.82 0.88 0.90 373 220 300 2975 94.5 0.84 0.89 0.91 389 2980 94.5 94.8 94.8 0.80 0.87 0.89 0.87 0.89 363

250 340 315L 802 7.9 2.4 2.8 5.39 14 31 1316 78.0 2980 94.5 94.8 94.7 0.83 0.88 0.91 419 250 340 2975 94.5 0.85 0.89 0.91 442 2980 94.3 94.8 94.8 0.81 0.87 0.90 0.87 0.90 408

260 350 315L 835 7.0 2.4 2.5 3.70 20 44 1340 78.0 2975 94.5 94.8 94.8 0.83 0.89 0.91 435 260 350 2970 94.7 0.85 0.90 0.92 453 2975 94.7 94.9 94.9 0.82 0.88 0.90 0.88 0.90 424

280 380 315L** 898 8.5 2.8 2.8 3.21 14 31 1443 78.0 2980 94.5 94.9 94.8 0.84 0.88 0.90 474 280 380 2975 94.8 0.86 0.89 0.90 499 2980 94.4 94.9 94.9 0.83 0.87 0.90 0.87 0.90 456

300 400 315L** 962 7.5 2.5 2.5 4.15 12 26 1500 78.0 2980 94.8 95.0 95.0 0.84 0.88 0.90 506 300 400 2975 94.9 0.86 0.89 0.91 528 2980 94.8 95.1 95.1 0.82 0.87 0.89 0.87 0.89 493

315* 430 355M/L 1008 7.8 2.1 2.6 5.60 22 48 1770 80.0 2985 94.6 94.9 94.8 0.87 0.90 0.91 527 315* 430 2980 94.8 0.88 0.91 0.91 555 2985 94.6 94.9 94.9 0.86 0.89 0.91 0.89 0.91 507

315* 480 355M/L 1136 7.9 2.2 2.8 6.01 14 31 1830 80.0 2985 94.6 95.0 94.8 0.86 0.90 0.91 594 355* 480 2980 94.6 0.88 0.91 0.91 627 2985 94.6 95.0 94.9 0.84 0.89 0.91 0.89 0.91 572

Notes:

(1) Efﬁciency values are given according to IEC 60034-2-1. They are calculated according to indirect method, with stray load losses determined by measurement.

(2) The CEMEP reference shown means that the efﬁciency of motors will exceed EFF2 if tested according to IEC 60034-2.

(*) Fitted with air deﬂector in the drive end side.

(**) Class “F” insulation DT 105 K.

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W22 Electric Motor 35