Contents
Standards ...1
European Directives ...1
CE Marking ...1
Specification in USA and Canada ...1
Used standards ...1
General about motors ...2
Squirrel cage motors ...3
Voltage ...4
Power factor ...5
Speed ...6
Torque ...7
Slip-ring motors ...7
Different starting methods ...8
Direct-on-line start (D.O.L) ...9
Star-delta start ...10
Frequency converter ...12
Softstarter ...13
Common problem when starting and stopping motors ...14
Different applications ...15
Centrifugal fan ...16
Direct-on-line start (D.O.L) ...16
Star-delta start ...17
Softstarter ...17
Selection of a suitable Softstarter ...18
Centrifugal pump ...19
Direct-on-line start (D.O.L) ...19
Star-delta start ...20
Softstarter ...21
Selection of a suitable Softstarter ...22
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