Abstract
This article will review many of the changes in the second edition of the American Petroleum Institute (API) 547 specification, General-Purpose Form-Wound Squirrel Cage Induction Motors-185 kW (250 hp) Through 2,240 kW (3,000 hp) [1]. The first edition of this standard [2] was released in 2005 to provide a set of requirements for general-purpose motors based on the key criteria of API Standard 541, fourth edition, applicable to 375-kW (500-hp) and larger motors [3]. The scope of API 547 is limited to a range of motor sizes and configurations that fit a majority of general-purpose severe duty applications that are common in petrochemical applications. API 541 has recently been updated to its fifth edition [4], and the second edition of API 547 has followed suit with revisions to the scope and criteria, various clarifications, data sheet changes, and an expanded data sheet guide.
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