Variadores de frecuencia
Páginas: 65 (16102 palabras)
Publicado: 5 de noviembre de 2011
SOFTSTARTER HANDBOOK
FOREWORD
This book is written with the thought of being a general guide for people working with softstarter applications but also for those just interested in learning more about this type of starting method. It doesn’t matter if you are an expert or novice, hopefully you will find some interesting and useful information either by reading from cover to cover or just thechapters of interest. The index at the end of the book can be used to simplify your search. The content of this book is very much based on the 20 years of experience we have within ABB of developing, manufacturing and selling low voltage softstarters. The book is not a complete technical guide or manual for all type of ABB Softstarters that may exist on the market. It is a complement to thetechnical catalogues and brochures we have for our products and will give a general picture of what to think about when working with softstarters. More information about softstarters as well as other ABB products is available on www.abb.com All advice given in this book is only general and every single application must be handled as a specific case.
ABB Automation Technology Products AB, ControlFebruary 2003 Magnus Kjellberg Sören Kling
ABB will not take any responsibility for any type of faults or damage due to the use of this handbook.
Contents
Contents
Standards
European Directives CE Marking Specification in USA and Canada Used standards
...1
...1 ...1 ...1 ...1
General about motors
Squirrel cage motors Voltage Power factor Speed Torque Slip-ring motors
...2
...3...4 ...5 ...6 ...7 ...7
Different starting methods
Direct-on-line start (D.O.L) Star-delta start Frequency converter Softstarter Common problem when starting and stopping motors
...8
...9 ...10 ...12 ...13 ...14
I
Different applications
Centrifugal fan Direct-on-line start (D.O.L) Star-delta start Softstarter Selection of a suitable Softstarter Centrifugal pump Direct-on-line start(D.O.L) Star-delta start Softstarter Selection of a suitable Softstarter
...15
...16 ...16 ...17 ...17 ...18 ...19 ...19 ...20 ...21 ...22
Compressor Direct-on-line start (D.O.L) Star-delta start Softstarter Selection of a suitable Softstarter Conveyor belt Direct-on-line start (D.O.L) Star-delta start Softstarter Selection of a suitable Softstarter
...23 ...23 ...24 ...25 ...26 ...27...27 ...28 ...29 ...30
Contents
How to select a softstarter Description of the softstarters
Description of different components Common settings Start ramp Stop ramp Initial voltage Current limit Step down voltage Adjustable rated motor current Different indications
...31 ...33
...34 ...36 ...36 ...36 ...36 ...37 ...38 ...38 ...39
II
Different voltage names Ambient temperature Highaltitudes Start of several motors
Parallel start of motors Sequential start of motors
...40 ...41 ...42 ...43
...43 ...44
Contents
Different ways of connecting the softstarter
In-Line connection Inside Delta connection Location of the main contactor
...45
...46 ...46 ...47
Basic settings
Table for settings without current limit function Table for settings with current limitfunction
...49
...50 ...51
Starting capacity and overload protection
Starting capacity for softstarters Starting capacity when using by-pass contactor Starting capacity when using overload protection
...52
...52 ...53 ...53
Number of starts/hour
Intermittance factor
...54
...54
Harmonics
Harmonic content
...55
...55
III
Explosive atmospheres (EEx)
Hazardous areasand zones Location and selection of softstarter
...56
...57 ...57
Co-ordination
Types of co-ordination Utilization Categories Types of fuses Where to find the co-ordination tables How to read the co-ordination tables
...58
...59 ...60 ...61 ...62 ...63
ESD aspects
Two type of faults and different circuits Electro static voltage levels Protection against ESD damages
...65...
FOREWORD
This book is written with the thought of being a general guide for people working with softstarter applications but also for those just interested in learning more about this type of starting method. It doesn’t matter if you are an expert or novice, hopefully you will find some interesting and useful information either by reading from cover to cover or just thechapters of interest. The index at the end of the book can be used to simplify your search. The content of this book is very much based on the 20 years of experience we have within ABB of developing, manufacturing and selling low voltage softstarters. The book is not a complete technical guide or manual for all type of ABB Softstarters that may exist on the market. It is a complement to thetechnical catalogues and brochures we have for our products and will give a general picture of what to think about when working with softstarters. More information about softstarters as well as other ABB products is available on www.abb.com All advice given in this book is only general and every single application must be handled as a specific case.
ABB Automation Technology Products AB, ControlFebruary 2003 Magnus Kjellberg Sören Kling
ABB will not take any responsibility for any type of faults or damage due to the use of this handbook.
Contents
Contents
Standards
European Directives CE Marking Specification in USA and Canada Used standards
...1
...1 ...1 ...1 ...1
General about motors
Squirrel cage motors Voltage Power factor Speed Torque Slip-ring motors
...2
...3...4 ...5 ...6 ...7 ...7
Different starting methods
Direct-on-line start (D.O.L) Star-delta start Frequency converter Softstarter Common problem when starting and stopping motors
...8
...9 ...10 ...12 ...13 ...14
I
Different applications
Centrifugal fan Direct-on-line start (D.O.L) Star-delta start Softstarter Selection of a suitable Softstarter Centrifugal pump Direct-on-line start(D.O.L) Star-delta start Softstarter Selection of a suitable Softstarter
...15
...16 ...16 ...17 ...17 ...18 ...19 ...19 ...20 ...21 ...22
Compressor Direct-on-line start (D.O.L) Star-delta start Softstarter Selection of a suitable Softstarter Conveyor belt Direct-on-line start (D.O.L) Star-delta start Softstarter Selection of a suitable Softstarter
...23 ...23 ...24 ...25 ...26 ...27...27 ...28 ...29 ...30
Contents
How to select a softstarter Description of the softstarters
Description of different components Common settings Start ramp Stop ramp Initial voltage Current limit Step down voltage Adjustable rated motor current Different indications
...31 ...33
...34 ...36 ...36 ...36 ...36 ...37 ...38 ...38 ...39
II
Different voltage names Ambient temperature Highaltitudes Start of several motors
Parallel start of motors Sequential start of motors
...40 ...41 ...42 ...43
...43 ...44
Contents
Different ways of connecting the softstarter
In-Line connection Inside Delta connection Location of the main contactor
...45
...46 ...46 ...47
Basic settings
Table for settings without current limit function Table for settings with current limitfunction
...49
...50 ...51
Starting capacity and overload protection
Starting capacity for softstarters Starting capacity when using by-pass contactor Starting capacity when using overload protection
...52
...52 ...53 ...53
Number of starts/hour
Intermittance factor
...54
...54
Harmonics
Harmonic content
...55
...55
III
Explosive atmospheres (EEx)
Hazardous areasand zones Location and selection of softstarter
...56
...57 ...57
Co-ordination
Types of co-ordination Utilization Categories Types of fuses Where to find the co-ordination tables How to read the co-ordination tables
...58
...59 ...60 ...61 ...62 ...63
ESD aspects
Two type of faults and different circuits Electro static voltage levels Protection against ESD damages
...65...
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