Revision of the Application Guide for Transient Recovery Voltage for AC High-Voltage Circuit Breakers of IEEE C37.011: A Working Group Paper of the High Voltage Circuit Breaker Subcommittee

An extensive revision of the IEEE C37.011 "Application Guide for TRV for AC High-Voltage circuit Breakers" has been in process for the last four years. The main aim was to introduce the two- and the four- parameter description of the transient recovery voltage (TRV) as used in IEC Switchgear standards that have been introduced in the revisions of Standards C37.04 and C37.06. These two standards are being concurrently revised, but IEEE C37.011 provides the necessary explanations on TRV characteristic in advance. Non-specialist engineer users of the guide will better understand these standards

I. Introduction

This document provides an outline of the main changes voted in 2005 to the IEEE C37.011 “Application Guide for Transient Recovery Voltage for AC High-Voltage Circuit Breakers.” The changes cover the procedures and calculations necessary to apply the standard transient recovery voltage (TRV) rating for high-voltage circuit breakers rated above 1000 V. The draft revision of IEEE C37.011 was balloted positively at 100% as of April 2005, and will be published in late 2005.