350-05 - Line Protection

350-05 - Line Protection

Learning objectives

  • Recall the purpose of Transmission Relay Loadability
  • Identify the applicability of PRC-023-4 to functional entities
  • Recall the process of coordinating protection between fuses and overcurrent protection relays
  • Recall the difference between fuse saving and fuse blowing protection schemes
  • Identify the strengths and weaknesses of using overcurrent protection relays
  • Identify the strengths and weaknesses of using distance relays
  • Recall how ground fault relay settings are different between distribution and transmission systems
  • Recall the process by which mutual induction can cause false trips in adjacent lines
  • Define overlapping zones of protection
  • Identify methods of protection against voltage instability
  • Recall the difference between manual and automatic load shedding

Course overview

Transmission, sub-transmission and distribution systems all have different operating characteristics and objectives. The way they transport power varies significantly; with each variation comes practical solutions to ensure safe and reliable operation. Each solution also has its limitations.

The individuals involved in the development and promotion of this course do not receive any compensation or financial benefits outside of their regular employment for their work on this course.


  • 40 minutes
  • Format: Online Interactive
  • Tier: 3
  • Course ID: 5826
Language Icon English
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