WEG WGM General instructions

Motors I Automation I Energy I Transmission & Distribution I Coatings

Three phase induction motors

cooled by water jacket

W line - Squirrel cage rotor

Horizontal and Vertical

Installation, Operation and Maintenance Manual

Document Number: 11239449

Model: WGM

Language: English

Revision: 8

February 2017

www.weg.net

11239449 Installation, operation and maintenance manual – Squirrel cage motor – W Line - Horizontal and vertical l 5

Dear Customer,

Thank you for purchasing a WEG motor. Our products are developed with the highest standards of

quality and efficiency which ensures outstanding performance.

Since electric motors play a major role in the comfort and well-being of mankind, it must be identified

and treated as a driving machine with characteristics that involve specific care, such as proper

storage, installation and maintenance

All efforts have been made to ensure that the information contained in this manual is faithful to the

configurations and applications of the motor.

Therefore, we recommend that you read this manual carefully before proceeding with the installation,

operation or maintenance of the motor in order to ensure safe and reliable operation of your

equipment and facility. If you need any further information, please contact WEG.

Always keep this manual close to the motor, so that it can be consulted whenever necessary.

ATTENTION

1. It is imperative to follow the procedures contained in this manual for the warranty to be valid;

2. The motor installation, operation and maintenance procedures must be performed only by qualified

personnel.

NOTES

1. The total or partial reproduction of information supplied in this manual is authorized, provided that

reference is made to its source. If this manual is lost, an electronic PDF file is available at www.weg.net

or another printed copy may be requested.

WEG EQUIPAMENTOS ELÉTRICOS S.A.

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11239449 Installation, operation and maintenance manual – Squirrel cage motor – W Line - Horizontal and vertical l 7

TABLE OF CONTENTS

1INTRODUCTION .................................................................................................11

1.1SAFETY WARNINGS IN THE MANUAL ...........................................................................................11

2GENERAL INSTRUCTIONS .................................................................................12

2.1QUALIFIED PERSONNEL ................................................................................................................12

2.2SAFETY INSTRUCTIONS ................................................................................................................12

2.3STANDARDS...................................................................................................................................12

2.4ENVIRONMENTAL CONDITIONS....................................................................................................13

2.5OPERATING CONDITIONS .............................................................................................................13

2.6VOLTAGE AND FREQUENCY .........................................................................................................13

3RECEIVING, HANDLING AND STORAGE .............................................................14

3.1RECEIVING .....................................................................................................................................14

3.2HANDLING......................................................................................................................................14

3.2.1Vertical motor positioning....................................................................................................................15

3.3STORAGE .......................................................................................................................................15

3.3.1Outdoor storage .................................................................................................................................15

3.3.2Extended storage ...............................................................................................................................15

3.3.2.1Storage location..................................................................................................................16

3.3.2.1.1Indoor storage ................................................................................................16

3.3.2.1.2Outdoor storage .............................................................................................16

3.3.2.2Separate parts ....................................................................................................................16

3.3.3Preservation during the storage...........................................................................................................16

3.3.3.1Space heater.......................................................................................................................16

3.3.3.2Insulation resistance............................................................................................................17

3.3.3.3Exposed machined surfaces................................................................................................17

3.3.3.4Sealing................................................................................................................................17

3.3.3.5Bearings..............................................................................................................................17

3.3.3.5.1Grease-lubricated rolling bearing.....................................................................17

3.3.3.6Terminal box .......................................................................................................................17

3.3.3.7Inspections and records during storage...............................................................................17

3.3.3.8Predictive/preventive maintenance.......................................................................................17

3.3.3.9Maintenance plan during storage.........................................................................................18

3.3.4Preparation for commissioning............................................................................................................19

3.3.4.1Cleaning..............................................................................................................................19

3.3.4.2Bearing lubrication...............................................................................................................19

3.3.4.3Insulation resistance verification...........................................................................................19

3.3.4.4Cooling system ...................................................................................................................19

3.3.4.5Others.................................................................................................................................19

4INSTALLATION...................................................................................................20

4.1INSTALLATION SITE .......................................................................................................................20

4.2SHAFT LOCK ..................................................................................................................................20

4.3ROTATION DIRECTION...................................................................................................................20

4.4INSULATION RESISTANCE.............................................................................................................20

4.4.1Safety Instructions ..............................................................................................................................20

4.4.2General considerations .......................................................................................................................20

4.4.3Measurement on the stator windings...................................................................................................20

4.4.4Additional Information .........................................................................................................................21

4.4.5Polarization Index................................................................................................................................21

4.4.6Conversion of the measured values.....................................................................................................21

4.4.7Insulation assessment.........................................................................................................................22

4.5PROTECTIONS ...............................................................................................................................22

4.5.1Thermal protections ............................................................................................................................22

4.5.1.1Temperature sensors ..........................................................................................................22

4.5.1.2Temperature limits for the windings .....................................................................................22

4.5.1.3Alarm and trip temperatures ................................................................................................23

4.5.1.4Temperature and ohmic resistance of the PT100 thermoresistance .....................................24

4.5.1.5Space heater.......................................................................................................................24

4.5.2Water leak sensor ...............................................................................................................................24

4.5.3Water temperature sensor ..................................................................................................................24

4.6COOLING........................................................................................................................................25

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8 l Installation, operation and maintenance manual – Squirrel cage motor – W Line - Horizontal and vertical 11239449

4.6.1Cooling system characteristics ........................................................................................................... 25

4.6.2Cooling water characteristics.............................................................................................................. 25

4.6.2.1Cooling water temperature ................................................................................................. 25

4.6.3Protection devices.............................................................................................................................. 25

4.7ELECTRICAL ASPECTS ................................................................................................................. 26

4.7.1Electrical connections......................................................................................................................... 26

4.7.1.1Main electrical connections................................................................................................. 26

4.7.1.2Grounding .......................................................................................................................... 26

4.7.2Connection diagrams ......................................................................................................................... 27

4.7.2.1Connection diagrams according to IEC60034-8.................................................................. 27

4.7.2.1.1Stator connection diagrams ........................................................................... 27

4.7.2.2Connection diagrams according to NEMA MG1.................................................................. 28

4.7.2.2.1Stator connection diagrams ........................................................................... 28

4.7.2.3Rotation direction ............................................................................................................... 28

4.7.2.4Accessory connection diagrams ......................................................................................... 28

4.8MECHANICAL ASPECTS ............................................................................................................... 29

4.8.1Foundations....................................................................................................................................... 29

4.8.2Foundation loads ............................................................................................................................... 29

4.8.3Base types......................................................................................................................................... 29

4.8.3.1Concrete base.................................................................................................................... 29

4.8.3.2Sliding base........................................................................................................................ 29

4.8.3.3Metal base.......................................................................................................................... 30

4.8.3.4Anchor bolts....................................................................................................................... 30

4.8.4Natural frequency of the base............................................................................................................. 30

4.8.5Leveling….......................................................................................................................................... 30

4.8.6Alignment........................................................................................................................................... 30

4.8.7Doweling… ........................................................................................................................................ 31

4.8.8Couplings........................................................................................................................................... 31

4.8.8.1Direct coupling ................................................................................................................... 32

4.8.8.2Gear coupling..................................................................................................................... 32

4.8.8.3Belt drive ............................................................................................................................ 32

5STARTING .........................................................................................................33

5.1DIRECT ON-LINE STARTING ......................................................................................................... 33

5.2DIRECT ONLINE STARTING FREQUENCY..................................................................................... 33

5.3LOCKED ROTOR CURRENT.......................................................................................................... 33

5.4STARTING WITH REDUCED CURRENT......................................................................................... 33

6COMMISSIONING ..............................................................................................34

6.1PRELIMINARY INSPECTION .......................................................................................................... 34

6.2FIRST STARTING ........................................................................................................................... 34

6.3OPERATION ................................................................................................................................... 34

6.3.1General…. ......................................................................................................................................... 35

6.3.2Temperatures..................................................................................................................................... 35

6.3.3Bearings…......................................................................................................................................... 35

6.3.4Cooling system .................................................................................................................................. 35

6.3.5Vibration…......................................................................................................................................... 35

6.3.6Shutdown .......................................................................................................................................... 35

6.4OPERATION AS ASYNCHRONOUS GENERATOR......................................................................... 36

6.4.1Operation........................................................................................................................................... 36

6.4.2Slip……….......................................................................................................................................... 36

6.4.3Precautions........................................................................................................................................ 36

7MAINTENANCE..................................................................................................37

7.1GENERAL....................................................................................................................................... 37

7.2GENERAL CLEANING .................................................................................................................... 37

7.3WINDING INSPECTIONS................................................................................................................ 37

7.4WINDING CLEANING ..................................................................................................................... 37

7.4.1Inspections ........................................................................................................................................ 37

7.4.2Reimpregnation.................................................................................................................................. 38

7.4.3Insulation Resistance.......................................................................................................................... 38

7.5COOLING SYSTEM MAINTENANCE .............................................................................................. 38

7.6VIBRATION..................................................................................................................................... 38

7.7MOTOR OUT OF OPERATION ....................................................................................................... 38

7.8SHAFT GROUNDING DEVICE ........................................................................................................ 38

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11239449 Installation, operation and maintenance manual – Squirrel cage motor – W Line - Horizontal and vertical l 9

7.9ENCODER MAINTENANCE.............................................................................................................38

7.10BEARING MAINTENANCE ..............................................................................................................39

7.10.1Grease-lubricated rolling bearings .......................................................................................................39

7.10.1.1Instructions for lubrication....................................................................................................39

7.10.1.2Procedures for rolling bearing relubrication ..........................................................................39

7.10.1.3Rolling bearing relubrication with drawer device for grease removal .....................................39

7.10.1.4Type and amount of grease.................................................................................................39

7.10.1.5Alternative greases ..............................................................................................................40

7.10.1.6Procedure for changing the grease......................................................................................42

7.10.1.7Low temperature greases....................................................................................................42

7.10.1.8Grease compatibility............................................................................................................42

7.10.1.9Disassembly – horizontal bearings .......................................................................................42

7.10.1.10Disassembly – vertical bearings ...........................................................................................43

7.10.1.10.1Before disassembling......................................................................................43

7.10.1.10.2Lower bearing disassembly.............................................................................44

7.10.1.10.3Upper bearing disassembly.............................................................................44

7.10.1.11Bearing assembly................................................................................................................44

7.10.2Rolling bearing replacement................................................................................................................44

7.10.3Bearing protection ..............................................................................................................................45

7.10.3.1Protection settings ..............................................................................................................45

7.10.3.2Disassembly/assembly of the bearing temperature sensors .................................................45

8MOTOR DISASSEMBLY AND ASSEMBLY ...........................................................46

8.1HORIZONTAL MOTORS .................................................................................................................46

8.1.1Disassembly .......................................................................................................................................46

8.1.2Assembly............................................................................................................................................46

8.2VERTICAL MOTORS .......................................................................................................................47

8.2.1Disassembly .......................................................................................................................................47

8.2.2Assembly............................................................................................................................................47

8.3AIR-GAP MEASUREMENT ..............................................................................................................48

8.4TIGHTENING TORQUE ...................................................................................................................48

8.5SPARE PARTS................................................................................................................................48

9MAINTENANCE PLAN.........................................................................................49

10ABNORMALITIES, CAUSES AND SOLUTIONS.....................................................50

11DECLARATION OF CONFORMITY.......................................................................52

12ENVIRONMENTAL INFORMATION.......................................................................53

12.1PACKAGE .......................................................................................................................................53

12.2PRODUCT.......................................................................................................................................53

12.3HAZARDOUS WASTE .....................................................................................................................53

13WARRANTY TERM .............................................................................................54