Circuit Protection Devices: Fuses


Description:

Introduction to the different types of fuses, their usage and rating, and how they are tested.

Learning Outcome:

Upon the completion of this module, you will be able to:

  1. Discuss the conditions under which circuit protection is needed.
  2. Describe the different types of fuses.
  3. Explain fuse ratings.
  4. Describe the fuse ratings for different types of fuses.
  5. Describe the features of renewable fuses.
  6. Describe the features of dual-element fuses.
  7. Describe the different types of fuse holders.
  8. Explain how to test for open fuses.

Topic 1: Fuses

  • Topic Introduction and Objectives
  • Types of Fuses
  • Plug Fuses
  • Features of Plug Fuses
  • Cartridge Fuses
  • Check-Point Question
  • Check-Point Question
  • Topic Summary

Topic 2: Fuse Ratings

  • Topic Introduction and Objectives
  • Current and Voltage Ratings
  • Ratings for Different Fuses
  • MCA and MOCP
  • Check-Point Question
  • Check-Point Question
  • Topic Summary

Topic 3: Renewable and Dual-Element Fuses

  • Topic Introduction and Objectives
  • Features of Renewable Fuses
  • Dual-Element Fuses
  • Check-Point Question
  • Topic Summary

Topic 4: Fuse Holders

  • Topic Introduction and Objectives
  • Clip-Type Fuse Holders
  • Post-Type Fuse Holders
  • Fuse Blocks
  • Check-Point Question
  • Topic Summary

Topic 5: Testing Fuses

  • Topic Introduction and Objectives
  • Checking for an Open Fuse
  • Continuity Test
  • Safety Precautions
  • Check-Point Question
  • Topic Summary
  • Assessment