Table of contents
1. Introduction
1.1 Equipment overview
2. General
2.1 Graphical symbols with nomenclature for circuit diagrams
2.2 Marking and identification of terminals of contactors and associated
overload relays
2.3 Terminal markings for electric motors
3. Starting and switching motors
3.1 Selection criteria overview
3.2 Selecting the right contactor for an application
3.3 Selecting the right overload for an application
3.4 Characteristic features of the commonly used starting methods for
squirrel-cage induction motors
4. Diagram types
4.1 Circuit diagram
4.2 Scematic wiring diagram
4.3 Control diagram
4.4 Simplified diagram
5. Direct on line starters and reversing starters
5.1 Several command locations
5.2 Direct on line starters (Contactor with overload relay)
5.3 Direct on line starters with mechanical latch
5.4 Reversing starters
6. Reduced voltage starters
6.1 Star-delta starters
6.2 Autotransformer starters
7. Additional applications
7.1 Circuit breakers
7.2 Circuit breakers KTA7 with contactor
7.3 Electrical heating, lamps and illumination equipment
8. Soft starters PCS
8.1 Soft starter typical application duty ratings
8.2 Setup
9. Variable speed drives
9.1 Introduction
9.2 VSD control algorithms
9.3 VSD benefits
9.4 Product selection
9.5 Schematics
9.6 Start and speed configuration
10. Timers
11. Appendix
11.1 AC motor currents table
11.2 Utilisation categories
11.3 Motor terminology
11.4 Time current curves
11.6 IP ratings chart
10.7 Circuit breakers
10.7 Short circuit coordination for motor starting time current curves
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