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

Amendment by IEEE, 04/03/1998

Full Description

Scope

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.

Purpose

Add ratings for asymmetric faults to existing standard. This represents work that has been done to develop the ratings.

Abstract

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.

Product Details

Published: 04/03/1998 ISBN(s): 9780738184760, 9780738110394 Number of Pages: 12 File Size: 1 file , 170 KB Product Code(s): STDSU98268, STDRES94599