Power Switchgear Retrofitting: Lessons from ANSI Standards Built on Four Decades of American Experience

For more than 40 years, retrofitting of medium and low voltage circuit breakers and switchgear has been a popular option within the Americas for extending the useful lifespan of power electrical equipment. Over the past decades, the IEEE has developed a dedicated normative standard, IEEE Std C37.59, which covers many forms of power switchgear conversion. This paper explores the successes and failures that comprise the retrofitting experience within the