Overcurrent Protection Theory

Course Number: E-4053
Credit: 4 PDH
Subject Matter Expert: Velimir Lackovic, Electrical Engineer
Price: $119.80 Purchase using Reward Tokens. Details
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Overview

In Overcurrent Protection Theory, you'll learn ...

  • The information needed for a relay protection setting analysis
  • Three methods to accomplish precise protection relay co-ordination
  • What is transient overreach and how to calculate it
  • Computation of phase fault overcurrent protection relay settings

Overview

PDHengineer Course Preview

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Credit: 4 PDH

Length: 49 pages

Relay protection against high current was the earliest relay protection mechanism to develop. From this basic method, the graded overcurrent relay protection system, a discriminative short circuit protection, has been formulated. This should not be confused with ‘overload’ relay protection, which typically utilizes relays that function in a time related in some degree to the thermal capacity of the equipment to be protected. On the contrary, overcurrent relay protection is completely directed to the clearance of short circuits, even though with the settings typically assumed some measure of overload relay protection may be obtained.

This course is suitable for engineers with a desire to understand overcurrent protection theory. The course covers co-ordination technique, rules for time/current grading, IDMT overcurrent protection curves, grading relay-relay, fuse-fuse and fuse-relay, protection relay connections, directional protection and ground fault protection.

Specific Knowledge or Skill Obtained

This course teaches the following specific knowledge and skills:

  • Rules for time/current grading
  • IDMT overcurrent protection curves
  • Grading relay-relay, fuse-fuse and fuse-relay
  • Protection relay connection
  • Directional protection
  • Ground fault protection

Certificate of Completion

You will be able to immediately print a certificate of completion after passing a multiple-choice quiz consisting of 35 questions. PDH credits are not awarded until the course is completed and quiz is passed.

Board Acceptance
This course is applicable to professional engineers in:
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PDHengineer Course Preview

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Credit: 4 PDH

Length: 49 pages

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