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Standard

IEEE C37.112-2018

Published

Note: This standard has a new edition: IEEE C37.112-2018

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Corrigendums and amendments are bought separately.

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Abstract

Revision Standard - Active. The inverse-time characteristics of overcurrent relays are defined in this standard. Operating equations and allowances are provided in the standard. The standard defines an integral equation for microprocessor relays that ensures coordination not only in the case of constant current input but for any current condition of varying magnitude. Electromechanical inverse-time overcurrent relay reset characteristics are defined in the event that designers of microprocessor based relays and computer relays want to match the reset characteristics of the electromechanical relays.

Document information

  • Standard from IEEE
  • Published:
  • Document type: IS
  • Pages
  • Publisher IEEE
  • Distributor IEEE
  • ICS 29.120.70
  • Technical Committee IEEE Power and Energy Society / Power System Relaying and Control

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