IEEE PC37.011/D9-2018 Draft Guide for the Application of Transient Recovery Voltage for AC High-Voltage Circuit Breakers with Rated Maximum Voltage above 1000V
IEEE - The Institute of Electrical and Electronics Engineers@ Inc.
Scope
This application guide covers procedures and calculations necessary to apply the standard transient recovery voltage (TRV) ratings for ac high-voltage circuit breakers with rated maximum voltage above1000 V. The breaking capability limits of these circuit breakers are determined to a great degree by theTRV. This application guide is not included in other existing circuit breaker standards. In this document@ the TRV ratings are compared with typical system TRV duties. Examples of TRV calculation are given with suggested options if the TRV duty exceeds the TRV ratings of the circuit breaker Purpose The purpose of this guide is to provide an application guide on the TRV ratings given in IEEE Std C37.04 for ac high-voltage circuit breakers rated on a symmetrical current basis. Definitions@ rating structure@ test procedures@ and preferred transient voltage ratings and related required capabilities are included in IEEE Std C37.04@ IEEE Std C37.09 and IEEE Std C37.06.1. IEEE Std C37.010 applies in other respects to these circuit breakers.