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Electrical Codes, Standards, Recommended Practices and Regulations
book

Electrical Codes, Standards, Recommended Practices and Regulations

by Robert J. Alonzo
January 2010
Intermediate to advanced content levelIntermediate to advanced
512 pages
18h 35m
English
William Andrew
Content preview from Electrical Codes, Standards, Recommended Practices and Regulations
its field windings in series with the armature. A separately excited generator has field
windings, which are not connected electrically to the armature and which are energized
from a separate power source. The compound generator has both series and shunt
windings.
NEMA MG 1, Motors and Generators provides Design Letters for polyphase induction
squirrel-cage medium motors. Those Design Letters provide information regarding locked-
rotor torque, pull-up torque, and slip values at rated torque and are shown in Table 8.1.
Reference MG 1 for specific Design Letter information based on motor horsepower, speed,
and frequency. MG 1 also lists Design Letters
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ISBN: 9780815520450