Switchgear Maintenance Training
417-01 Switchgear
When you complete this lesson, you will be able to describe the function and operation of switchgear. You will be able to identify the equipment that makes up a switchgear system and describe the purpose of protection relays.
- Describe what switchgear is and explain how it is used
- Identify types of switchgear by voltage
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Describe the use and purpose of the following:
- Breakers and switches
- Generator breaker
- Electrical bus
- Switchgear relays
- Describe the type of indication and communication employed by switchgear relays
417-02 Low Voltage Breakers
When you complete this lesson, you will understand the purpose and use of low voltage circuit breakers in electrical circuits.
- Describe the function of low voltage breakers
- Describe low voltage, molded case breakers and low voltage, large frame breakers; identify their differences
- Explain how to connect a large frame breaker
- Define the low voltage breaker voltage category
- Describe how an arc is formed and extinguished
- Explain why breakers trip and describe breaker closing and tripping devices
417-03 Medium and High Voltage Switchgear
When you complete this lesson, you will be able to identify the technical details associated with construction and operation of high and medium voltage switchgears.
- Identify the basic theory and design of medium voltage switchgear
- Identify the basic theory and design of high voltage switchgear
- Describe the function and interrupting mediums of High Voltage and Medium Voltage operating mechanisms
- Identify common switching considerations
- Identify modern Medium Voltage switchgear applications
417-04 General Switchgear Maintenance
When you complete this lesson, you will be able to identify and perform the common tasks and tests related to modern switchgear.
- Identify general circuit breaker maintenance tasks
- Identify tasks associated with standard operating mechanism maintenance
- Identify tasks associated with hydraulic and pneumatic operating mechanism maintenance
- Describe the three common electrical tests conducted on large circuit breakers
417-05 Breaker Specific Maintenance
When you complete this lesson, you will be able to complete breaker specific maintenance tasks in order to maximize breaker life and maintain system stability.
- Identify shared maintenance tasks associated with air-magnetic and vacuum breakers
- Identify specific maintenance tasks related to air-magnetic circuit breakers
- Identify specific maintenance tasks related to vacuum circuit breakers
- Identify specific maintenance tasks related to oil circuit breakers
- Identify specific maintenance tasks related to gas-blast circuit breakers
- Identify specific maintenance tasks related to air-blast circuit breakers
417-06 Circuit Breaker Time-Travel Characteristics and Testing
When you complete this lesson, you will be able to identify the purpose and principles of circuit breaker time-travel testing and explain the processes associated with conducting the three types of time-travel testing.
- Identify the purpose of time-travel testing
- Identify the principles of time-travel testing
- Identify the characteristics of circuit breaker time
- Identify the characteristics of circuit breaker travel
- Identify equipment used in circuit breaker time-travel testing
- Compare operating processes of drop bar, light beam and digital timer/analyzer recorders