Maintenance of High-Voltage Circuit Breakers

3.8 4 Reviews SKU: AECHV00CENDuration: 60 Minutes

After completing this course, you should be able to describe the basic operation of an oil circuit breaker, an air-magnetic circuit breaker, a vacuum circuit breaker, and an SF6 gas puffer circuit breaker. You should also be able to explain how each type of circuit breaker extinguishes an arc, and you should be able to describe basic procedures for racking out high-voltage circuit breakers and performing routine maintenance and testing on them.

Course Details

Specs

Training Time: 60 minutes

Compatibility: Desktop Only

Based on: Industry Standards and Best Practices

Languages: English

Learning Objectives

  • CIRCUIT BREAKER OVERVIEW * Identify and describe the main components of a typical oil circuit breaker and explain how an arc is extinguished in this type of circuit breaker.* Describe and discuss the importance of switchgear and the contribution that switchgear makes to housekeeping and personnel safety in an industrial environment.* List the components in a typical switchgear assembly.* Describe how the contacts in a typical circuit breaker are closed.* Describe how the contacts in a typical circuit breaker are opened.* Describe how a shunt trip can be used to release a latching mechanism and open breaker contacts automatically.
  • OIL BREAKERS * Differentiate between air circuit breakers and oil circuit breakers.* Describe how a solenoid and springs are used to close and open the contacts in a typical oil circuit breaker.
  • AIR-MAGNETIC BREAKERS * Identify and describe the main components of a typical air-magnetic circuit breaker and explain how an arc is extinguished in this type of circuit breaker.
  • VACUUM BREAKERS * Identify and describe the main components of an interrupter for a typical vacuum circuit breaker and explain how an arc is extinguished in this type of circuit breaker.
  • SF6 GAS BREAKERS * Identify and describe the main components of an interrupter for a typical puffer type SF6 gas circuit breaker and explain how an arc is extinguished in this type of circuit breaker.
  • CIRCUIT PROTECTION * Describe a typical overcurrent protection system and a typical under-voltage and overvoltage protection system used with high-voltage circuit breakers.* Discuss at least three common ratings that are found on breaker nameplates.* Describe a typical overcurrent protection system used with high-voltage circuit breakers.
  •  ROUTINE MAINTENANCE OVERVIEW * Describe the purpose of maintenance and testing high-voltage breakers.* Discuss the frequency of maintenance and testing of high-voltage breakers.* Explain the importance of occasional operation of circuit breakers and switchgear.* Express necessary safety measures taken during maintenance and testing.
  • RACKING OUT AIR-MAGNETIC AND VACUUM BREAKERS * Describe or demonstrate the procedure for electrically isolating an air-magnetic breaker.* Describe and discuss the procedure identified as racking out a high-voltage breaker.* Describe or demonstrate how the interior of an empty switchgear cell is prepared for inspection.
  •  INSPECTING AIR-MAGNETIC AND VACUUM BREAKERS * Describe how to clean and inspect the interior of an empty switchgear cell.* Describe how to clean and inspect the components of a typical air-magnetic circuit breaker.* Describe cleaning and inspection tasks specifically associated with vacuum circuit breakers.
  •  PEPARING OIL AND SF6 GAS BREAKERS * Describe typical procedures for electrically isolating SF6 gas circuit breakers and oil circuit breakers before maintenance is performed.* Explain why and describe how an oil sample is usually tested before maintenance is performed on an oil circuit breaker.* Describe safety and environmental concerns associated with the use of SF6 gas.
  • INSPECTING AND REPAIRING SF6 AND OIL CIRCUIT BREAKERS * Describe how to disassemble, clean, inspect, and reassemble a typical oil circuit breaker.* Describe cleaning and inspection tasks typically associated with puffer-type SF6 gas circuit breakers.
  • PERFORMING ELECTRICAL TESTS * Identify and describe how to perform some common electrical tests that may be required during routine maintenance of high-voltage circuit breakers.

Customer Reviews

4/19/2019

Good Info

“Good info and decent presentation.”

Alex V. Verified Customer

3/16/2019

Way longer then one hour.

“Way longer then one hour.”

Piotr M. Verified Customer

2/23/2019

Average

This customer provided only a star rating and no written review.

Fergus J. Verified Customer

11/14/2018

Great Refresher Course!

“This was a great refresher course!”

Alex M. Verified Customer

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