
The letter designation above in each motor enclosure description is an abbreviation of the
enclosure name. The parenthesis enclosed designations are the international index of
protection and motor index of cooling designations for each motor enclosure.
Motors and Generators General Types
The NEMA MG 1, Motors and Generators lists the general categories for motors and
generators as [5]:
1. Alternating Current Motors
(a) Induction Motors
(1) Squirrel-Cage Induction Motors
(2) Wound-Rotor Induction Motors
(b) Synchronous Motors
(1) Direct-Current Excited Synchronous Motors
(2) Permanent-Magnet Synchronous Motors
(3) Reluctance Synchronous Motors
2. Alternating ...