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IEEE C37.081a-1997

IEEE Guide for Synthetic Fault Testing of AC High-Voltage Circuit Breakers Rated on a Symmetrical Current Basis
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IEEE C37.081a-1997

IEEE Guide for Synthetic Fault Testing of AC High-Voltage Circuit Breakers Rated on a Symmetrical Current Basis

PUBLISH DATE 2007
PAGES 12
IEEE C37.081a-1997

Amendment Standard - Inactive-Reserved.

The transient recovery voltage needs to be modified when interrupting asymmetrical currents.

The voltage rate R, the peak voltage E2, and the rate of change of current di/dt all change with the asymmetrical current zero.

Guidance is provided on how to make these corrections when compared to the symmetrical case.

This revision will provide information on how to determine the Transient Recovery Voltage wave shapes for asymmetric terminal faults.

The basis of rating is given and the factors to be applied for various fault conditions, i.e., degree of asymmetry and time of interruption.

Add ratings for asymmetric faults to existing standard.

This represents work that has been done to develop the ratings.

SDO IEEE: Institute of Electrical and Electronics Engineers
Document Number C37.081
Publication Date March 22, 2007
Language en - English
Page Count 10
Revision Level a
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