• API Std 547

API Std 547

General-purpose Form-wound Squirrel Cage Induction Motors-250 Horsepower and Larger, First Edition

American Petroleum Institute , 01/01/2005

Publisher: API

File Format: PDF

$70.00$140.00


This standard covers the requirements for form-wound induction motors for use in general-purpose petroleum, chemical and other industrial severe duty applications. These motors:

  • are rated 250 hp (185 kW) through 3000 hp (2250 kW) for 4, 6 and 8 pole speeds
  • are rated less than 800 hp (600 kW) for two-pole (3000 or 3600 RPM) motors of totally-enclosed construction
  • are rated less than 1250 hp (930 kW) for two-pole motors of WP-II type enclosures
  • drive centrifugal loads
  • drive loads having inertia values within those listed in NEMA MG 1 Part 20)
  • are not induction generators

NOTE: Motors larger than that covered above and motors in other applications should be specified in accordance with API Std 541.

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