Day 1

Introduction

  • Introduction to protection
  • Reading a three line diagram and schematic diagram
  • Construction and operating principles of electromechanical relays (especially induction disk, plunger type, magnetic attraction type)
  • Construction and operating principles of microprocessor relays.
  • How to read characteristic curves
  • How to use characteristic curves to come up with operating times
  • How is directionality determined
  • Operating and polarizing quantities

Hands on testing of overcurrent relays

  • Pickup
  • Timing curve
  • Instantaneous pickup
  • Time overcurrent target
  • Instantaneous target

Day 2

Hands on testing of over/under voltage relays

  • Pickup
  • Timing curve
  • Instantaneous pickup
  • Time overcurrent target
  • Instantaneous target

Hands on testing of over/under frequency relays

  • Pickup
  • Timing curve
  • Instantaneous pickup
  • Time overcurrent target
  • Instantaneous target

Day 3

Hands on testing of directional over current relays

  • Pickup
  • Timing curve
  • Instantaneous pickup
  • Time overcurrent target
  • Instantaneous target
  • Test directionality