Inactive-Reserved Standard

IEEE 738-2012

IEEE Standard for Calculating the Current-Temperature Relationship of Bare Overhead Conductors

A method of calculating the current-temperature relationship of bare overhead lines, given the weather conditions, is presented. Along with a mathematical method, sources of the values to be used in the calculation are indicated. This standard does not undertake to list actual temperature-ampacity relationships for a large number of conductors nor does it recommend appropriately conservative weather conditions for the rating of overhead power lines. It does, however, provide a standard method for doing such calculations for both constant and variable conductor current and weather conditions.

Sponsor Committee
PE/T&D - Transmission and Distribution
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Status
Inactive-Reserved Standard
PAR Approval
2010-11-08
Superseded by
738-2023
Superseding
738-2006
Corrigendum
738-2012/Cor 1-2013
Board Approval
2012-10-19
History
Published:
2013-12-23
Inactivated Date:
2023-03-30

Working Group Details

Society
IEEE Power and Energy Society
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Sponsor Committee
PE/T&D - Transmission and Distribution
Learn More About PE/T&D - Transmission and Distribution
Working Group
738_WG - Conductor Working Group P738
IEEE Program Manager
Michael Kipness
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Working Group Chair
Cody Davis

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.


738-2023

IEEE Standard for Calculating the Current-Temperature Relationship of Bare Overhead Conductors

A numerical method by which the core and surface temperatures of a bare overhead conductor are related to the steady or time-varying electrical current and weather conditions is described in this standard. Contents discussed also include how this method may be used to determine the conductor's current for a corresponding conductor temperature limit. Please note the content in this standard does not recommend suitable weather conditions or conductor parameters for use in line rating calculations.

Learn More About 738-2023

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.


738-1986

IEEE Standard for Calculation of Bare Overhead Conductor Temperature and Ampacity Under Steady-State Conditions

The purpose of this standard is to present a simplified method of calculating the current-temperature relationship of bare over-head lines when given the weather conditions.

Learn More About 738-1986

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.


738-2012/Cor 1-2013

IEEE Approved Draft Standard for Calculating the Current-Temperature Relationship of Bare Overhead Conductors - Corrigendum 1

Technical corrections are addressed in this corrigendum. (NOTE: This corrigendum was not published as an individual standard. It was incorporated into IEEE Std 738-2012 at the time of publication)

Learn More About 738-2012/Cor 1-2013

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