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2017 Edition, 2017

Complete Document

Guide to General-Purpose Synchronous Motors without Excited Rotor Windings

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Description / Abstract:

This guide covers general-purpose synchronous motors without excited rotor windings, including polyphase alternating-current permanent magnet motors rated 500 horsepower and less, designed in standard ratings with standard operating characteristics and mechanical construction for use under usual service conditions without restriction to a particular application or type of application, and incorporating all of the following:

a. Across the line starting

b. Permanent magnets in the rotor c. Open or enclosed construction

d. Rated continuous duty

e. Class B or higher rated insulation system with a temperature rise at rated load not exceeding that specified in 7.15 for Class B insulation.
ANSI/NEMA MW 1000, 2014