Electrical Transformers and Power Equipment

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The Fairmont Press, Inc., 1999 - Electric apparatus and appliances - 394 pages
5 Reviews
This book provides a comprehensive resource on technical, application and operational aspects of all types of electrical transformers and power systems, covering operation theory; transformer construction, installation, operation and maintenance; principal transformer connections; transformer types; troubleshooting; circuit breakers; disconnecting devices; fuses; lightning or surge arrestors; protective relays; storage batteries; reactors; capacitors; rectifiers; instruments; and insulation. Illustrations and diagrams are included throughout the written presentation.
 

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Contents

TRANSFORMER CONSTRUCTION
22
INSTALLATION
43
OPERATION AND MAINTENANCE
56
PRINCIPAL TRANSFORMER CONNECTIONS
70
OTHER TRANSFORMER TYPES
89
TESTING AND TROUBLESHOOTING
107
Electrical Power Equipment
127
OPERATION AND MAINTENANCE
157
LIGHTNING OR SURGE ARRESTERS
218
DESIGN AND CONSTRUCTION
235
OPERATION AND MAINTENANCE
265
STORAGE BATTERIES
289
REACTORS CAPACITORS RECTIFIERS
311
INSTRUMENTS
334
APPENDIX
370
INDEX
385

DISCONNECTING DEVICES
178
FUSES
199

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Page 20 - An electric current flowing in a conductor produces a magnetic field 'around' the conductor which is proportional to the current. Thus a small current produces a weak magnetic field, while a large current will produce a strong magnetic field. The magnetic field 'spirals' around the conductor, as shown in Fig. 5.15 and its direction can be determined by the 'dot...
Page 21 - The ratio of these voltages will be the same as the ratio of the number of turns in the coils (Fig.
Page 18 - The regulation of a transformer is the ratio of the change in secondary terminal voltage from no load to full load (at constant primary impressed terminal voltage) to the rated secondary voltage, usually at some specified power factor.
Page 15 - Np = Number of turns in primary winding. Ns = Number of turns in secondary winding. EP = Voltage induced in primary winding. ES = Voltage induced in secondary winding.
Page 21 - EMF depends on the strength of the magnetic field, the length of the conductor, and the speed with which the conductor cuts the magnetic field.

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