Preview Switchgear Design, Selection, and Application Engineering

Module 1: Fundamentals of Switchgear and Power Systems

1.1 Definition, Function, and Classification of Switchgear

1.2 Components of a Power Distribution System (LV, MV, HV overview)

1.3 Importance of Switchgear in Safety, Isolation, and System Reliability

Module 2: Electrical Design Principles and Load Calculations

2.1 Load Flow and Diversity Factor in Distribution Networks

2.2 Short Circuit Current Calculation and Fault Level Assessment

2.3 Equipment Rating and Selection Based on Load Profiles

Module 3: Low Voltage (LV) Switchgear Assemblies

3.1 LV Panels (MDB, SMDB, Final DB) – Structure and Busbar Arrangement

3.2 Circuit Breakers (MCB, MCCB, ACB) – Function and Coordination

3.3 LV Switchgear Protection, Interlocking, and Metering Arrangements

Module 4: Medium Voltage (MV) and High Voltage (HV) Switchgear Systems

4.1 Types of MV/HV Switchgear – AIS, GIS, Hybrid

4.2 Vacuum Circuit Breakers (VCB), SF₆ Breakers, and Contactors

4.3 MV/HV Panel Layout, Bus Coupling, and Interlocking Logic

Module 5: Protection Coordination and Discrimination

5.1 Time-Current Characteristics and Selectivity Curves

5.2 Protection Schemes for Feeders, Transformers, and Motors

5.3 Relay Settings and Grading Calculations for LV/MV Systems

Module 6: Switchgear Components and Control Devices

6.1 Contactors, Relays, CTs, PTs, and Fuses – Working and Selection

6.2 Control Wiring, Auxiliary Circuits, and Interlocking Schemes

6.3 Motor Control Centers (MCC) and Power Control Centers (PCC)

Module 7: Switchgear Design, Layout, and Busbar Engineering

7.1 Panel Layout Design – Front/Rear Access, Compartments, and Clearances

7.2 Busbar Sizing, Fault Stress, and Temperature Rise Calculations

7.3 Earthing, Enclosure Design, and Cable Entry Arrangements

Module 8: Standards, Testing, and Quality Assurance

8.1 IEC/IS Standards (IEC 61439, IEC 62271, IS 8623, etc.)

8.2 Factory Acceptance Test (FAT) and Site Acceptance Test (SAT) Procedures

8.3 Inspection Checklists, Type Test, and Routine Test Requirements

Module 9: Safety, Maintenance, and Troubleshooting

9.1 Electrical Safety Protocols and Arc Flash Prevention

9.2 Preventive and Predictive Maintenance Schedules

9.3 Common Faults in Switchgear Systems and Troubleshooting Steps

Module 10: Design Documentation and Project Integration

10.1 Preparation of SLDs, Control Schematics, and Panel GA Drawings

10.2 Bill of Materials (BOM), Technical Submittals, and Datasheets

10.3 Switchgear Integration with Transformers, Generators, and UPS Systems