Standard: IEEE - ANSI C37.06.1

GUIDE FOR HIGH-VOLTAGE CIRCUIT BREAKERS RATED ON SYMMETRICAL CURRENT BASIS DESIGNATED “DEFINITE PURPOSE FOR FAST TRANSIENT RECOVERY VOLTAGE RISE TIMES”

This standard is available for individual purchase.

or unlock this standard with a subscription to IHS Standards Expert

IHS Standards Expert subscription, simplifies and expedites the process for finding and managing standards by giving you access to standards from over 370 standards developing organizations (SDOs).

FEATURES & BENEFITS
  • Maximize product development and R&D with direct access to over 1.6 million standards
  • Discover new markets: Identify unmet needs and discover next-generation technologies
  • Improve quality by leveraging consistent standards to meet customer and market requirements
  • Minimize risk: Mitigate liability and better understand compliance regulations
  • Boost efficiency: Speed up research, capture and reuse expertise
For additional product information, visit the IHS Standards Expert page.

HOW TO SUBSCRIBE
For more information or a custom quote, visit the IHS Contact Us page for regional contact information.
Scope:

Foreword

Following reports of circuit breaker failures in applications where very fast TRVs were determined to be the cause, and after thorough analysis of TRV data gathered from all parts of the world, this guide was suggested by the IEEE Switchgear Committee’s Task Force on Transient Recovery Voltages. The task force suggested that another class of definite purpose circuit breakers was needed for fast TRV applications. Circuit breakers designated as definite purpose for fast transient recovery voltage rise times applications would be subjected to special fast TRV parameters during both Test Duty 2 (30% of rated short-circuit current) and Test Duty 1 (7% of rated short-circuit current) trials, to demonstrate the capability to interrupt circuits characterized by fast inherent TRVs. A few words of clarification are in order:

• No fast T2 values or tests are proposed for fault currents greater than 30% of rated short-circuit current.

• The proposed fast T2 values were chosen to meet 90% of the known fast TRV circuits, but even these fast values do not meet the requirements of all fast TRV applications.

• A circuit breaker that would meet the requirements for definite purpose for fast TRV rise times applications may or may not also meet the requirements for definite purpose circuit breakers for capacitor switching.

It is the purpose of this guide to communicate the suggested values to those in the industry who are interested and who would be in a position to offer comments and suggestions for further revisions.

Table 1B contains values for circuit breakers designed and tested to the circuit breaker ratings contained in ANSI C37.06-2000, Table 1. These circuit breaker ratings have a rated voltage range factor (K) equal to 1.0.

Tables 2B and 3B contain values for circuit breaker ratings contained in ANSI C37.06-2000, Tables 2 and 3.

This guide was initially approved as a “trial-use” guide in 1997. Experience with the trial-use document since then has been favorable, and the document is now approved for more general use as a guide. Only minor editorial revisions have been made to the guide, plus suitable revisions to the text of this “Foreword.”  

Scope

This guide is issued as a supplement to C37.06 for high-voltage circuit breaker applications where the transient recovery voltages (TRV) rise to the crest value much more rapidly than those specified in ANSI C37.06:

Table 1, Preferred ratings for indoor circuit breakers with voltage range factor K=1.0;

Table 2, Preferred ratings for outdoor circuit breakers 72.5 kV and below; or

Table 3, Preferred ratings for outdoor circuit breakers rated 123 kV and above. 2

Organization: The Institute of Electrical and Electronics Engineers, Inc.
Document Number: ansi c37.06.1
Publish Date: 2000-01-01
Page Count: 12
Available Languages: EN
DOD Adopted: NO
ANSI Approved: YES
Most Recent Revision: YES
Current Version: YES
Status: Active

Document History

Document # Change Type Update Date Revision Status
ANSI C37.06.1 Change Type: STCH Update Date: 1997-01-01 Revision: 97 Status: INAC

This Standard References

Showing 4 of 4.


Advertisement
Advertisement
Advertisement
Advertisement