TOC–4 Stellar
®
SR55 Series Soft Starter User Manual – 1st Ed, Rev F – 09/18/2019
Table of Contents
Appendix B: Soft Starter Application Considerations � � � � � � � � � � � � � � � � � � � � � � � B–1
B�1 – Motor Suitability and Associated Considerations � � � � � � � � � � � � � � � � � � � � � � � B–2
B�1�1 – Suitability � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � B–2
B�1�2 – Induction Motor Characteristics � � � � � � � � � � � � � � � � � � � � � � � � � � � B–2
B�1�3 – Rating � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � B–2
B�1�4 – Maximum Motor Cable Length � � � � � � � � � � � � � � � � � � � � � � � � � � � � B–3
B�1�5 – Power Factor Correction Capacitors � � � � � � � � � � � � � � � � � � � � � � � � � B–3
B�1�6 – Lightly Loaded Small Motors � � � � � � � � � � � � � � � � � � � � � � � � � � � � � B–3
B�1�7 – Motors Installed with Integral Brakes� � � � � � � � � � � � � � � � � � � � � � � � � B–3
B�1�8 – Older Motors � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � B–3
B�1�9 – Wound-rotor or Slip-ring Motors� � � � � � � � � � � � � � � � � � � � � � � � � � � B–3
B�1�10 – Enclosures � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � B–3
B�1�11 – Efficiency � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � B–4
B�1�12 – High-Efficiency Motors � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � B–4
B�1�13 – EU Compliance with the EMC Directive � � � � � � � � � � � � � � � � � � � � � � � B–4
B�1�14 – Fuses � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � B–4
B�2 – Rules for Specific Applications � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � B–5
B�2�1 – In-Delta Operation � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � B–5
B�2�2 – High-Inertia Loads � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � B–5
B�2�4 – Resistive Loads � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � B–5
B�2�5 – Frequent Starting� � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � B–5
B�2�6 – Optimizing � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � B–5
B�2�7 – Soft Stopping � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � B–6
B�2�9 – Replacement of Fluid Couplings � � � � � � � � � � � � � � � � � � � � � � � � � � � B–6
B�2�12 – Overhauling Loads � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � B–6
B�2�13 – Application Table � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � B–6
B�3 – Concepts and Principles of Fixed-Speed Induction Motor Starting and Control� � � � � � � B–8
B�3�1 – Introduction � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � B–8
B�3�2 – The Induction Motor� � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � B–8
B�3�3 – Starting Induction Motors � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � B–10
B�3�4 – Electro-Mechanical Methods Of Starting � � � � � � � � � � � � � � � � � � � � � � B–11
B�3�5 – The Semiconductor Motor Controller � � � � � � � � � � � � � � � � � � � � � � � � B–12
B�3�6 – Running Induction Motors � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � B–13
B�3�7 – Reliability Considerations � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � B–14
Appendix B Glossary of Terms � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � B–15
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