Trainee Name____________________________  

Trainee Social Security Number: ____________

Trainee Status:  _______

Course Name: ___________________

Course Code: ___________________                                 

National Center Course Number: ___________

Date Course Completed: ____________________

Performance Criteria Completed:  _____________

Performance Objectives:

                                                                                                                     Pass     Fail                  

Topic 1: Principles of Operation

1.1  Identify and describe the main components of a typical
    air-magnetic circuit breaker.

1.2  Identify and describe the main components of a typical
oil circuit breaker.

1.3  Describe how an arc is extinguished in an air-magnetic
circuit breaker and in an oil circuit breaker.

1.4  Describe several types of protective systems used with
high voltage circuit breakers.

Topic 2: Maintenance of Air-Magnetic Circuit Breakers

2.1 Perform maintenance on a typical air-magnetic circuit
      breaker, including the following:

• Disconnecting the breaker from the power

• Inspecting the interior of the empty switchgear cell

• Inspecting the arc chutes and arc runners

• Inspecting and cleaning the stationary and movable contacts

• Inspecting the operating mechanism and primary and
  secondary disconnects

• Cycling

2.2 Perform the following tests on a typical air-magnetic
      circuit breaker:

• Megohmmeter test
• Breaker analyzer test
• Contact resistance test

Topic 3: Maintenance of Oil Circuit Breakers 

3.1 Perform maintenance on a typical oil circuit breaker,
      including the following:

• Electrically isolating the breaker
• Removing the oil tank
• Inspecting and cleaning the contacts
• Inspecting and lubricating the operating mechanism
• Replacing the oil tank

3.2 Explain the purpose of a dielectric strength test.

Performance Evaluator’s Signature _______________________________

Performance Evaluator’s Name (Print) ____________________________

Date Completed: _____________________________________________