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IJD Percentage Differential Relay - Legacy

IJD Percentage Differential Relay
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Manufacturing for IJD has been discontinued. As an alternative, please refer to P346/889 or P642/T35.


The IJD Percentage Differential Relay is used for the protection of AC rotating machinery and power transformers.

Features and Benefits
  • Single- and three-phase units available
  • Various percentage slopes available
  • Electrically operated target seal-in unit
  • Restraint current matching taps (IJD53)
  • Drawout case
  • Applications
  • AC rotating machines (IJD52)
  • Power Transformers (IJD53)
  • Protection and Control
  • Fixed slope percentage-differential