System Protection Technology

2101 — Elements of System Protection

Duration: 4.0 Hour(s)

Category/Categories: , ,

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Power Transmission

Power Distribution


The objective of this module is to overview the function of protection schemes, including general protection philosophy and its impact on the operation of the system.

After study of this tape and the associated workbook, the participant should be able to understand the following overall concepts and apply them to his day-to-day work activities.

  • Why protection is necessary
  • The philosophy and objectives of protection
  • Zones of protection – local and backup
  • Causes and consequences of faults
  • Tolerable and intolerable fault conditions
  • Relay and circuit breaker combinations
  • Elementary tripping circuit
  • IEEE Standard device numbers
  • Control circuit schematics
  • Monitoring relay performance
  • Factors affecting relay application
  • The need for coordination


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