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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
The capacitor installation scheme will determine how the voltage will be affected by the
presence of a capacitor bank. If the capacitor is permanently installed on a bus, it will provide
a permanent boost in voltage. If the capacitor is switched, voltage will increase when it is
turned on and decrease when it is turned off.
Capacitors can also be installed on the load side of a motor starter for induction motors with
poor power factors. However, caution should be exercised in that practice. Squirrel-cage
induction motors can have power factors of 80–90% at full load operation. That power factor
level can drop off depending on the percentage load
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ISBN: 9780815520450