Transcription of Appendix 9C: Design Calculations for Electrical Design
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Appendix 9C: Design Calculations for Electrical Design
Chapter 9 Electrical Design SPU Design Standards and Guidelines November 2020 i Appendix 9C Design Calculations for Electrical Design Chapter 9 Electrical Design Appendix 9C Design Calculations for Electrical Design ii SPU Design Standards and Guidelines November 2020 Contents 1. Introduction .. 1 2. Software .. 1 3. Calculation Matrix .. 2 4. Basic Requirements for Electrical Calculations .. 4 5. Basic Electrical Engineering Formulas .. 4 List of Symbols .. 4 Direct Current (DC) Formulas .. 5 Alternating Current (AC) Single Phase .. 5 Alternating Current (AC), Three-Phase .. 5 Motors .. 6 Power Factor Correction .. 7 6. Sample Calculations .. 7 Load .. 7 Generator Sizing .. 7 Sizing Procedures for Generator Single or Multi-sets .. 8 Definitions: Generator Sizing .. 8 Underlying Equations .. 8 Conductor Size, General .. 10 Conduit Size and Fill .. 13 Motor Branch Circuit.
• Grounding in substations where step potentials are of concern • Harmonic distortion analysis • Cable pulling calculations • Generator capability/motor starting 2. SOFTWARE The electrical design engineer must use only SPU-approved electrical analysis software. The
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