Active PAR

PC37.112

Standard for Inverse-Time Characteristics Equations for Overcurrent Relays

This standard reviews various existing analytic techniques used to represent relay operating characteristic curve shapes and proposes analytical (formula) representation of typical operating characteristic curve shapes to foster some standardization of available inverse-time relay characteristics provided in microprocessor or computer relay applications.

Standard Committee
PE/PSRCC - Power System Relaying and Control
Status
Active PAR
PAR Approval
2025-12-10
Superseding
C37.112-2018

Working Group Details

Society
IEEE Power and Energy Society
Standard Committee
PE/PSRCC - Power System Relaying and Control
Working Group
K36_C37.112 - Standard Inverse-Time Characteristic Equations for Overcurrent Relays
IEEE Program Manager
Vanessa Lalitte
Contact Vanessa Lalitte
Working Group Chair
Christopher Walker

Other Activities From This Working Group

Current projects that have been authorized by the IEEE SA Standards Board to develop a standard.


No Active Projects

Standards approved by the IEEE SA Standards Board that are within the 10-year lifecycle.


No Active Standards

These standards have been replaced with a revised version of the standard, or by a compilation of the original active standard and all its existing amendments, corrigenda, and errata.


No Superseded Standards

These standards have been removed from active status through a ballot where the standard is made inactive as a consensus decision of a balloting group.


No Inactive-Withdrawn Standards

These standards are removed from active status through an administrative process for standards that have not undergone a revision process within 10 years.


No Inactive-Reserved Standards
Subscribe to our Newsletter

Sign up for our monthly newsletter to learn about new developments, including resources, insights and more.