scope:

This recommended practice provides practices and processes to perform, analyze, and report failure investigations of AC high voltage circuit breakers and circuit switchers.

Note: The term Circuit Breaker is a generic term which may include AC High Voltage Circuit Breakers and Circuit Switchers.

Purpose

The purpose of this recommended practice is

a) To provide recommended practices and promote uniform, thorough analysis of power circuit breaker and circuit switcher failures

b) To provide recommended practices for systematic and uniform data collection so that valuable evidence is not lost or destroyed

c) To provide a consistent methodology by which the most probable cause of any particular circuit breaker or circuit switcher failure should be determined, whether equipment or system issue

d) To encourage cooperative efforts by users and manufacturers during failure analysis

e) To provide recommended practices for reporting failures of circuit breakers and circuit switchers.