API STD 547:2017(R2022)

This standard covers the requirements for form-wound induction motors for use in general purpose petroleum, chemical and other industrial severe duty applications and with the following characteristics: a) rated 185 kW [250 horsepower (hp)] through 2240 kW (3000 hp) for four-, six-, and eight-pole speeds; b) rated less than 600 kW (800 hp) for two-pole (3000 or 3600 RPM) motors of totally enclosed construction; c) rated less than 930 kW (1250 hp) for two-pole motors of WP-II type enclosures; d) rated less than 375 kW (500 hp) for vertical motors; e) drive centrifugal loads; f) drive loads having inertia values not exceeding those listed in NEMA MG 1 Part 20; and g) operated as motors, not induction generators.