scope:

This guide provides practices and processes to perform, analyze, and report failure investigations of power circuit breakers.

Purpose

The purpose of this guide is

a) To provide guidelines and promote uniformity in the analysis of power circuit breaker failures

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

c) To provide a methodology by which the most probable cause of any particular circuit breaker failure may be determined

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

e) To provide guidance for reporting failures for power circuit breakers