syllabus of Electrical System Design Course

AEDEI: Syllabus of Electrical System Design

Module-1 System planning

  • Basic design considerations
  • Planning guide for the supply and distribution system
  • Power system modernization and evaluation studies/programs
  • Voltage considerations
  • Voltage control in electric power systems
  • Voltage selection
  • Voltage ratings for low-voltage utilization equipment
  • Voltage drop considerations in locating the low-voltage/ high-voltage
  • Calculation of voltage drops

Module-2 Cost estimating of industrial power systems

  • Preparing the cost estimate
  • Classes of estimates
  • Equipment and material costs
  • installation costs
  • Other costs


  • Different entities of illuminating systems
  • Light sources: daylight, incandescent, electric discharge, fluorescent, arc lamp and Lasers
  • Luminaries, wiring, switching & control circuits
  • Laws of illumination; illumination from point, line and surface sources Photometry and spectrophotometry
  • Interior lighting – industrial, residential, office departmental stores, indoor stadium, theater and hospitals.
  • Exterior lighting- flood, street, aviation and transport lighting, lighting for displays and signaling- neon signs, LED-LCD displays beacons and lighting for surveillance
  • Utility services for large building/office complex & layout of different meters and protection units
  • Different type of loads and their individual protections
  • Selection of cable/wire sizes; potential sources of fire hazards and precautions.
  • Prepare layout of Different type lights
  • Refer Std:- IES(illumination Engineering Society )
    • IES (illumination Engineering Society)
    • IS 3646Code of Practice for Interior Illumination
    • IEC62504 General Lighting — LEDs and LED Modules —terms and definitions
    • National Lighting Code (Nlc)-2010
    • IS 6665 Code of Practice forIndustrial Lighting
    • IS 1944 Code of Practice for Lighting of public Thoroughfares
    • IEC 60598-2-3 Particular requirements – Luminaires for road and street lighting
Module-4 Cable Sizing and Selection of single Phase and Three Phase
  • Load Details Calculation
  • Cable type and Construction features
  • Site Installation Conditions
  • Cable Selection Based on Current Rating of feeder
  • Base Current Ratings of feeder
  • Installed Current Ratings of Cable
  • Cable Selection and Coordination with Protective Devices
  • Feeders load detail
  • Motors load detail
  • Voltage Drop of cable
  • Cable Impedances
  • Maximum Permissible Voltage Drop by ANSI and IEC std.
  • Calculating Maximum Cable Length due to Voltage Drop
  • Short Circuit Temperature Rise calculation of cable
  • selection Minimum Cable Size Due to Short Circuit Temperature Rise
  • Initial and Final Conductor Temperatures withstand capability of cable
    • IEC 60364-5-52:election and erection of electrical equipment –Wiring systems
    • IEC 60364-5-54:Selection and erection of electrical equipment –Earthing arrangements, protective conductors and protective bonding conductors
    • IEC 60502-2: Power cables with extruded insulation and their accessories for rated voltages from 6kV up to 30kV
    • IS 7098 (Part 2)-1985:Specification for Cross-linked polyethylene insulated PVC sheathed cables–Specification (3.3kV to 33kV).
    • IS 1255:Code of practice for installation and maintenance of power cablesup to and including 33 kV rating
Module-5 Internal Electrification design
  • Electrical Layout in residential building using Auto CAD
  • Selection of house wiring
  • Sizing and Selection of Conduit
  • Sizing and selection of Switch Socket
  • Calculation of load on circuit
  • Design of sub circuit (Lighting Circuit and Power Circuit)
  • Distribution of Power Circuit
  • Calculation of fan
  • Calculation of Earthing for residential buildings
  • Sizing and selection of low voltage switchgears (MCB,MCCB, RCB, RCBO MPCB)
    Refer Std. IS 4648,CPWD
  • Method of Lightening protection
  • Basic Consideration for Protection
  • Calculations for Evaluating the Need for Protection
  • Calculation of Protective Angles And Zone Of Protection For Various
    Forms of Air Termination
  • Selection of lightening protection device
  • Selection of ESE type Lightening Protection
    Rfer Std.
    IS 2309,NFC 72-102
Module-7 Earthing Design and Calculation of Power Plants
  • Factors Influencing The Choice Of Earthed And Unearthed Systems
  • System Earthing &Equipment EarthingConnections To Earth
  • Resistance to Earth and Earth Electrode Current Density at The Surface of an Earth Electrode
  • Selection of an Earthing Conductor and Connection af an Electrode
  • Chemical Earthing Calculation
  • Voltage Gradient around Earth Electrodes
  • Connections to Earth Electrodes — Earthing And Protective Conductors
  • Earthing Arrangement for Protective Purposes
  • Earthing Arrangement for Functional Purposes
  • Earthing Arrangements For Combined Protective And Functional Purposes
  • Equipotential Bonding Conductors
  • Typical Schematic of Earthing And Protective Conductors
  • Earthing In Power Stations And Substations
  • Earthing Associated With Overhead Power Lines
  • Calculation of Earth Fault Currents
  • Measurement of Earth Resistivity
  • Measurement of Earth Electrode Resistance
  • Measurement of Earth Loop Impedance
  • Equipotential Bonding Conductors
Earhing Calculation For Switchyard And Power Plants
  • Step Voltage,Touch Voltage
  • Design Procedure
  • Calculation of Maximum Step And Mesh Voltages
  • Refinement of Preliminary Design
  • Application of Equations For EmAndesUse of Computer Analysis In Grid Design
  • Std. Ref. IS, IEC. IEEE, BS
    • IEEE Std 80-2000 Guide for Safetyin AC Substation Grounding.
    • BS 7430 Code of practice forEarthing
    • IS : 3043Code of Practice for Earthing

  • Transmission Planning
  • Indian Electricity Rules and State Regulations for transmission line
  • Choice of Route of transmission line
  • Selection of conductors for Overhead transmission
  • Spacing of Conductors in transmission lines
  • Calculation of SAG and Tension
  • Overhead transmission line Clearance
  • Selection of structure Pole, Lattice, Tower
  • Survey of transmission line upto 220KV
  • Sag Template and Tower Spotting
  • Classification of soil of Soil for 220KV transmission line
  • Tower Erection at Site Condition
  • Choice of Spans for 440kV transmission
  • Transmission line Earthing Calculation
  • Selection of Transmission line Insulator and fittings
  • Overhead transmission line lightning Calculation
  • Transmission line maintaince and erection solution


  • Selection of project – Classification – Zone/Area wise
  • Electrical Clearance of substation
  • Insulation Coordinationcalculation of Equipment
  • Outdoor Substation Layout
  • Control Room Layout
  • Types of bus-bar schemes of Substation
  • Substation Main Equipment
  • sizing of Transformers
  • Reactive Compensation Equipment
  • Shunt Capacitors
  • Static VAR Systems
  • Selection and Sizing of Voltage Transformers (VT) for switchyards
  • Selection and Sizing of Current Transformers (CT)
  • HT/LT Circuit Breaker Selection and Sizing
  • Control& Relay Panels
  • Standard Protection Schemes for Substation and Transmission line
  • Substation Automation system design
  • Selection of PLC, Communication protocol
  • Benefits of Substation Automation system
  • Substation Automation with IEC 61850 Standard
  • selection and sizing of Disconnectors and earth switches (isolators)
  • selection and sizing of Lightning Protection
  • Selection of luminaries
  • Selection and sizing of Bus Support Insulators
  • Selection and sizing ofStrain Insulators
  • Power line carrier Equipment (PLCC)
  • Earthing of Switchyard
  • Cabling of Switchyard
  • Fire Protection Facilities in Substation
  • DC Auxiliary supply/ Battery bank Sizing and selection
  • Ref. Std
    • IEEE Std 80-2000 :Guide for Safetyin AC Substation Grounding.
    • IS 5613:Code of practice for design, installation and maintenance of overhead power lines,
    • IEC 60071-2:Insulation co-ordination – Part 2:
    • IEC: 62271-100:High-voltage switchgear and controlgear
    • IEC 826-1991: Technical report on loading and strength of overhead transmission lines.
    • IEC 60853:Sections on operating conditions – Reference operating conditions and selection of cable type
    • IEC 60949:Calculation of thermally permissible short-circuit currents, taking into account non-adiabatic heating effects
    • IS 3646: Code of Practice for Interior Illumination
  • IEC60909:Short-circuit currents in three-phase A.C. systems