Power Transformers: Principles and ApplicationsComplete with equations, illustrations, and tables, this book covers the basic theory of electric power transformers, its application to transformer designs, and their application in utility and industrial power systems. The author presents the principles of the two-winding transformer and its connection to polyphase systems, the origins of transformer losses, autotransformers, and three-winding transformers and compares different types of transformer coil and coil construction. He describes the effects of short circuits on transformers, the design and maintenance of ancillary equipment, and preventative and predictive maintenance practices for extending transformer life. |
From inside the book
Results 1-5 of 38
Page vi
... magnetic properties of materials , a review of mag- netic units , and analysis of magnetic circuits are discussed with enough mathe- matical rigor for the interested reader to gain full comprehension of the physics involved . Whenever a ...
... magnetic properties of materials , a review of mag- netic units , and analysis of magnetic circuits are discussed with enough mathe- matical rigor for the interested reader to gain full comprehension of the physics involved . Whenever a ...
Page ix
... Magnetic Units and Conversion Factors Currents and Magnetic Fields 1 1.4 Magnetic Induction 1.5 Constructing a Simple Transformer 345 1.6 The Magnetic Circuit 1.7 The B - H Curve 1.8 The B - H Curve and Hysteresis 1.9 Magnetizing ...
... Magnetic Units and Conversion Factors Currents and Magnetic Fields 1 1.4 Magnetic Induction 1.5 Constructing a Simple Transformer 345 1.6 The Magnetic Circuit 1.7 The B - H Curve 1.8 The B - H Curve and Hysteresis 1.9 Magnetizing ...
Page 1
... MAGNETIC UNITS AND CONVERSION FACTORS The basic operation of all transformers is deeply rooted in electromagnetics , whether or not the transformer has a magnetic iron core . Students are often confused by the terminology used to ...
... MAGNETIC UNITS AND CONVERSION FACTORS The basic operation of all transformers is deeply rooted in electromagnetics , whether or not the transformer has a magnetic iron core . Students are often confused by the terminology used to ...
Page 2
... magnetic quantity is flux , represented by the Greek letter o . Since a magnetic field can be visualized as a bundle of lines flowing from a north magnetic pole to a south magnetic pole , flux is the total number of “ lines . ” The ...
... magnetic quantity is flux , represented by the Greek letter o . Since a magnetic field can be visualized as a bundle of lines flowing from a north magnetic pole to a south magnetic pole , flux is the total number of “ lines . ” The ...
Page 3
... magnetic field surrounds the conductor . According to the right - hand rule , a magnetic field surrounds the conductor in a counterclockwise direction . The right - hand rule is stated as follows : With the thumb of the right hand ...
... magnetic field surrounds the conductor . According to the right - hand rule , a magnetic field surrounds the conductor in a counterclockwise direction . The right - hand rule is stated as follows : With the thumb of the right hand ...
Contents
1 | |
2 TwoWinding Transformer Connections | 25 |
3 Transformer Impedance and Losses | 69 |
4 Autotransformers and ThreeWinding Transformers | 117 |
5 Short Circuits Inrush Currents and Other Phenomena | 147 |
6 Ancillary Equipment | 189 |
7 Reading and Applying Nameplate Information | 221 |
8 Maintenance Testing Troubleshooting and Reliability | 235 |
Index | 277 |
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Common terms and phrases
A-connected ampere ampere-turns autotransformer B-H curve bushings calculated clip test common winding conductor cooling class copper losses core and coil core form transformer core leg core losses electrical equal equivalent circuit Example exciting current fault current Filtered oil flux density forces harmonic high-voltage IEEE induced voltages insulation kraft paper KVA base KVA rating load current load tap changer magnetic flux magnetizing current nameplate neutral oil level operating output path phase angle phase rotation phase sequence networks phase-to-ground fault phase-to-neutral phase-to-phase power transformers primary and secondary primary voltage primary winding secondary voltage secondary windings sequence currents series impedance series winding shown in Figure single-phase transformers symmetrical components tap changer terminals tertiary winding test report three-phase three-winding transformer trans transformer connection transformer impedance transformer tank turns ratio two-winding transformer unit vector diagram volt voltage rating voltage surge winding temperature Y-Y connection zero phase sequence zero-sequence