IEC & IEEE medium voltage distribution equipment standards, review & analysis

Abstract

Global users of electrical power equipment are increasingly given the option of implementing either NEMA/ANSI or IEC equipment on projects. In many parts of the world either set of standards may apply. IEC and IEEE standards have come substantially closer over the last decade. However differences remain. The authors will explain differences in the applicable standards and what those differences may mean to a user. The intent is to provide the user an analytical basis upon which to understand the tradeoffs that may be made choosing one set of standards versus the other.