Maintenance of Low-Voltage Circuit Breakers

4.0 5 Reviews SKU: AECLV00CENDuration: 60 Minutes

Circuit breakers and switchgear are among the most common, yet critical, components of an industrial electrical system. Circuit breakers are devices that interrupt or complete electrical circuits. They protect systems and equipment from the effects of excessive current, and they provide a way to switch power on and off and isolate circuits or equipment on which work is being performed. Switchgear is basically a self-contained, enclosed assembly of circuit breakers and auxiliary devices.Part of your responsibility involves keeping circuit breakers and switchgear working properly. So, it is important for you to have a good understanding of how circuit breakers work and the types of maintenance procedures that are typically performed on them.

Course Details

Specs

Training Time: 60 minutes

Compatibility: Desktop Only

Based on: Industry Standards and Best Practices

Languages: English

Learning Objectives

  • Basic Parts and Operation
  • Identify and describe common types of low-voltage circuit breakers.
  • Describe the basic functions of a circuit breaker.
  • Identify and describe major components of a typical low-voltage circuit breaker.
  • Describe ways in which circuit breaker contacts can be closed.
  • Identify the three sections of a typical switchgear assembly and describe the function of each section.
  • Describe how a typical circuit breaker is connected to primary power and control power
  • Principles of Circuit Interruption
  • Describe what arcing is and how arcs form.
  • Describe safety measures that should be followed to minimize risks associated with arcing and other electrical hazards.
  • Describe factors that can affect how an arc is extinguished.
  • Describe how a metal fin arc chute can be used to extinguish an arc in a typical circuit breaker.
  • Explain what current zero is.
  • Maintenance
  • Describe a procedure for racking out a typical circuit breaker for maintenance.
  • Describe basic maintenance procedures that are performed on a typical circuit breaker.
  • Describe three checks that can be performed on the movable and stationary contacts of a typical circuit breaker.
  • Describe how to perform an instantaneous trip test and a time delay trip test on a typical circuit breaker.

Customer Reviews

7/10/2019

it was a great video.

“It was a great video.”

Douglas S. Verified Customer

6/18/2019

comment

“comment”

Mike R. 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

10/5/2018

I enjoyed it

“I enjoyed it”

William M. Verified Customer

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