- Sponsor Committee
- PE/SWG - Switchgear
- Superseded Standard
- ANSI Approved:
Working Group Details
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
The descriptions of the standard transient recovery voltage (TRV) envelopes and ratings are changed in this amendment. 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 standards into harmony with the TRV requirements in IEC standards that apply to the same type and class of equipment. The TRV revisions addressed in this amendment to IEEE Std C37.09-1999 are described in amendment IEEE Std C37.04b-2008.
IEEE Standard for Three-Phase Manually Operated Subsurface and Vault Load-Interrupting Switches for Alternating-Current Systems
Requirements are given for three-phase group operated subsurface and vault load-interrupting switchgear with maximum ratings of 600 A and 38 kV, and for utilizing separable insulated connectors. Definitions are given, and service conditions and ratings are discussed.Design tests, production tests, and construction requirements are included.