MODULE (01) INTRODUCTION OF SWITCHGEARS PRINCIPLES AND APPLICATIONS

 

• 1.1        Safety & Electricity safety roles
• 1.1.1     What Is Electricity?
• 1.1.2     Electrical Hazards
• 1.1.3     Effects of Electric Current On Human Body
• 1.1.4     Energized Work
• 1.1.5     Electrical Accidents &Personal Protective Equipment
• 1.2        General Introduction
• 1.3        Basic Components of Electric Power System
• 1.4        Types of Substations (Transmission and Distribution)
• 1.5        Switchgear Drawings
• 1.6        Switchgear Ratings
• 1.8        Difference Between Switchgear & Switchboards
• 1.9        Types of HV Isolators, Switches and Circuit Breakers
• 1.10      Distribution Layout and Configuration
• 1.11      Distribution System Configuration:
• 1.11.1   Radial
• 1.11.2   Loop (ring)
• 1.11.4   Network
• 1.11.5   Primary Selective
• 1.12      Standard Device Function Numbers
• 1.13      Substation Equipment
• 1.14      Major elements of distribution system
• 1.15      Switchgear Factory Testing
• 1.16      Short Circuit Current Estimation

MODULE (02) CIRCUIT BREAKER OVERVIEW

 

 

• 2.1        Purpose/application
• 2.2        Principle of Switchgear
• 2.3        Location of Switchgear, Sub - Station Equipment
• 2.4        Types of Switchgears - LV metal clad switchgear and Motor Control Centers (MCC)
• 2.5        Low voltage circuit Breakers classification, Rated quantities, types of releases and tests.
• 2.6        Circuit Breaker Construction
• 2.7        Circuit Breaker Operation
• 2.8        Circuit Breaker Control
• 2.9        Modern ( LV – MV - HV ) Switchgear
• 2.10      Personnel and Equipment Safety Factors

 

 

MODULE (03) CIRCUIT BREAKER MAINTENANCE

 

 

• 3.1        Function of Circuit breakers
• 3.2        Arc Phenomena and Circuit Interruption
• 3.3        EHV Gas Insulated Switchgear
• 3.4        Modern Vacuum Distribution Switchgear
• 3.5        Modern SF6 Distribution Switchgear
• 3.6        Other Type of Circuit Breakers
• 3.6.1     Air Circuit Breakers
• 3.6.2     Oil Circuit Breakers
• 3.6.3     Synchronies Circuit Breakers
• 3.6.4     Dc Circuit Breakers
• 3.7        Maintenance frequencies
• 3.8        Inspection
• 3.9        Testing
• 3.10      Interpreting test results
• 3.11      Troubleshooting and repair 

MODULE (04) SF6 CIRCUIT BREAKERS

 

 

• 4.1        SF6 - Gas Properties.
• 4.2        SF6 - Metal enclosed Switchgear.
• 4.3        SF6 - Apparatus and Components.
• 4.4        SF6 - Circuit Breakers.
• 4.5        Insulation Coordination and over Voltage Protection.
• 4.6        Handling, Maintenance, Inspection and Testing.
• 4.7        General Design Considerations.
• 4.8        SF6 Testing
• 4.9        Troubleshooting 

MODULE (07) SWITCHGEAR MAINTENANCE

 

• 7.1        Operation of Switchgear Devices
• 7.2        Preventive Maintenance
• 7.3        Testing
• 7.4        Corrective Maintenance

 

 

MODULE (08) CIRCUIT BREAKER MAINTENANCE, CARE & TESTING

 

 

• 8.1        Mechanical Inspections
• 8.2        Contact Resistance Tests
• 8.3        Insulation Resistance Tests
• 8.4        Insulating Gas and Oil Analysis
• 8.5        Travel Analysis

MODULE (09) EQUIPMENTS RELATED TO SWITCHGEARS

 

 

• 9.1        Transformer Construction
• 9.1.1     Tank
• 9.1.2     Core, Coils, Types and Ratings
• 9.1.3     Bushings
• 9.1.4     Tap Changers
• 9.1.5     Factory Testing
• 9.1.6     Dry, Oil and Liquid Filled Types
• 9.2        Auxiliary Equipment
• 9.2.1     Gas Relays
• 9.2.2     Fans and Pumps
• 9.2.3     Gauges
• 9.2.4     Tap Changer Controls
• 9.3        Failure Causes
• 9.3.1     Detailed analysis of several case histories
• 9.3.2     Lightening
• 9.3.3     Oil Decay
• 9.3.4     Component Failures
• 9.3.5     Internal Faults
• 9.3.6     External Faults
• 9.4        Testing Practices & Standards
• 9.4.1     Oil Analysis
• 9.4.2     Electrical Testing
• 9.4.3     Insulation Resistance and Polarization Index Tests
• 9.4.4     Turns Ratio, Excitation Current and Polarity Testing
• 9.4.5     Capacitance and Power Factor Testing
• 9.4.6     Winding Resistance Tests

 

 

MODULE (10) BATTERIES AND CHARGERS

 

 

• 10.1      Types of station batteries
• 10.2      Batteries Constriction
• 10.3      Lead Acid Batteries Advantages and Disadvantages
• 10.4      Maintenance
• 10.5      Inspection
• 10.6      Testing