IEEE Unapproved Draft Std PC37.09b/D4, Sept 2009
IEEE Standard Test Procedure for AC High-Voltage Circuit Breakers Rated on a Symmetrical Current Basis Amendment 2: To Change the Description of Transient Recovery Voltage for Harmonization with IEC 62271-100

Standard No.

IEEE Unapproved Draft Std PC37.09b/D4, Sept 2009

Release Date

2023

Published By

Institute of Electrical and Electronics Engineers (IEEE)

Scope

This standard is revised to change the descriptions of the standard transient recovery voltage (TRV) envelope and ratings. This is applicable for ac high-voltage circuit breakers rated above 1000 V and on a symmetrical current basis. The capability limits of these circuit breakers are determined to a major degree by the TRV. The revised descriptions of TRV bring the TRV requirements in IEEE standa...

Standard and Specification