Day One

1. General Introduction
•    Electrical engineering basic concepts
•    Three phase review and per unit
•    Voltage levels
•    One line and three line diagram
•    Generation system layout
•    Transmission system layout
•    Substation system layout
•    Distribution system layout

2. Industrial Switchgears
•    Fuses
•    Auto-reclosers
•    Automatic sectionalizer
•    Circuit Breakers
•    Isolator switches
•    Load switches
•    Relays
•    Current transformers
•    Voltage transformers

Day Two

3. CB Design Specification Based on Short Circuit Current Level
•    Per unit system
•    Faults on power systems
•    Transient phenomena in power system.
•    Symmetrical component analysis of three phase network
•    Network connection for various fault types
•    Current and voltage distribution in system due to a fault
•    Effect of system on zero sequence quantities
•    Computer programs based short circuit calculation.

4. CB Design Specification Based on Arc Phenomena and Circuit Interruption
•    Arc phenomena
•    Maintenance of the Arc
•    Properties of Arc
•    Arc Interruption theory
•    Circuit Breaker Rating
•    Circuit constants and circuit conditions
•    Conditions of severity
•    Restriking voltage transient
•    Class A ultra fast transients
•    Class B system transients
•    Class C low transients
•    Transmission line transient
•    Switching transients
•    Duties of Switchgear

Day Three

5. LV Circuit Breakers
•    Low voltage molded case current limiting circuit breakers
•    Low voltage molded case circuit breakers with high breaking capacity
•    Insulated case circuit breakers
•    Low voltage air circuit breakers
•    Low voltage circuit breakers specification

6. Modern MV and HV Vacuum CB

•    Introduction
•    Advantages of vacuum interruption
•    Vacuum contactors and interrupters
•    The vacuum medium
•    The vacuum arc
•    Vacuum arc stability
•    Vacuum break down
•    Vacuum switch construction
•    Applications of vacuum circuit breakers

7. Modern MV and HV SF6 CB Introduction

•    Basic Features of SF6 Breakers
•    Dielectric properties of SF6
•    Quenching properties of SF6
•    Construction of SF6 breaker
•    SF6 CB types
•    Puffer type SF6 breakers
•    Double Pressure System
•    Single Pressure Puffer-Piston System
•    Single Pressure Self Blast System
•    Improvement in SF6 Breakers for HV

Day Four

8. Other Type of Circuit Breakers
a) Air Circuit Breakers
•    Method of increasing arc resistance
•    Plan break type
•    Magnetic blow out type
•    Arc splitter type
•    Application
•    Construction and operation
•    Axial air CB
•    Blast air CB

b) Oil Circuit Breakers
•    Arc rupture under oil
•    Advantages of oil
•    Disadvantages of oil
•    Plan break oil circuit breakers
•    Arc control circuit oil breakers
•    Minimum oil circuit breakers
•    Construction and operation

c) Dc Circuit Breakers
•    Construction
•    Methods of interruption
•    Application

Day Five

9. Circuit Breaker Inspection, Maintenance and Services
•    Inspection
•    General inspection technical procedure
•     Daily inspection of circuit breakers
•     Monthly inspection of circuit breakers
•     Annual inspection of circuit breakers
•    Disassembly
•    Cleaning
•    Tightening
•    Lubrication
•    Equipments used in testing
•    Testing procedure
•    Direct testing
•    Contact resistance test.
•    Insulation resistance test
•    Test report
•    Indirect testing
•    One hour Video, HV CB Maintenance and Repair)

10. Circuit Breakers Control, Protection and Testing

•    Switchgears control devices and wiring
•    Switchgears protection devices and wiring
•    Testing Classification
•    Testing laboratories
•    Description of a simple testing station

11. CB Troubleshooting

• Low insulation Resistance (below 2000 Mega-ohms) between a) Phase terminal and earthed frame, with breaker closed b) Phase terminals of a pole.
• Resistance between Termi¬nals of Pole too high (above 100 microhms) (15 micro-ohm per joint) contact
• Unequal contact Wipe and Travel in 3-pole Measured from top surface of inter¬rupter flange and the contact lip by a simple rod with a) breaker open and b) breaker closed
• One of the pole docs not close.
• Breaker operation too Slow During opening timing from trip command to contact separation instant too large (60 ms instead of say 40 ms)