Introductory technical guidance for electrical engineers and electric power system managers interested in testing of transformers. Here is what is discussed: 1. GENERAL 2. CORE INSULATION RESISTANCE AND INADVERTENT CORE GROUND TEST 3. DOBLE TESTS ON INSULATION 4. VISUAL INSPECTION 5. ULTRASONIC AND SONIC FAULT DETECTION 6. VIBRATION ANALYSIS 7. TURNS RATIO TEST 8. ESTIMATE OF PAPER DETERIORATION (ONLINE) 9. ESTIMATE OF PAPER DETERIORATION (OFFLINE DURING INTERNAL INSPECTION) 10. TRANSFORMER OPERATING HISTORY 11. TRANSFORMER DIAGNOSTICS/CONDITION ASSESSMENT SUMMARY

Introductory technical guidance for electrical engineers and electrical distribution system managers interested in inspection and testing of electric power distribution transformers. Here is what is discussed: 1. GENERAL, VISUAL INSPECTION, 5. ULTRASONIC AND SONIC FAULT DETECTION, 6. VIBRATION ANALYSIS, 7. TURNS RATIO TEST, 8. ESTIMATE OF PAPER DETERIORATION (ONLINE), 9. ESTIMATE OF PAPER DETERIORATION (OFFLINE DURING INTERNAL INSPECTION), 10. TRANSFORMER OPERATING HISTORY, 11. TRANSFORMER DIAGNOSTICS/CONDITION ASSESSMENT SUMMARY.

Introductory technical guidance for electrical engineers and electrical distribution system managers interested in inspection and testing of electric power distribution transformers. Here is what is discussed: 1. GENERAL, VISUAL INSPECTION, 5. ULTRASONIC AND SONIC FAULT DETECTION, 6. VIBRATION ANALYSIS, 7. TURNS RATIO TEST, 8. ESTIMATE OF PAPER DETERIORATION (ONLINE), 9. ESTIMATE OF PAPER DETERIORATION (OFFLINE DURING INTERNAL INSPECTION), 10. TRANSFORMER OPERATING HISTORY, 11. TRANSFORMER DIAGNOSTICS/CONDITION ASSESSMENT SUMMARY.

Introductory technical guidance for electrical engineers interested in transformer testing and inspection. Here is what is discussed: 1. DOBLE TESTS ON INSULATION 2. VISUAL INSPECTION 3. INFRARED TEMPERATURE ANALYSIS 4. CORONA SCOPE SCAN 5. ULTRASONIC AND SONIC FAULT DETECTION 6. VIBRATION ANALYSIS 7. TURNS RATIO TEST.

Introductory technical guidance for electrical engineers interested in transformer testing and inspection. Here is what is discussed:1. DOBLE TESTS ON INSULATION2. VISUAL INSPECTION3. INFRARED TEMPERATURE ANALYSIS4. CORONA SCOPE SCAN5. ULTRASONIC AND SONIC FAULT DETECTION6. VIBRATION ANALYSIS7. TURNS RATIO TEST.

A unique blend of traditional methods of electrical machine testing and modern approach to the subject is the key feature of the book. The book opens up with an introduction of the basic terms and deals with the tests conducted on transformers and induction machines as is needed by the undergraduate students of Electrical Engineering. A more realistic approach has been adopted to reach the bottom of the subject. A collection of nearly 140 questions gives in-depth understanding. An additional section on experimental values has also been provided. All the questions are provided with answers at the back of the book. A large number of pictorial presentations have been incorporated in the book in form of snaps, figures, circuit diagrams. Copyright (c) 2012 by Author & Designer. All rights reserved.

The book presents basic theories of transformer operation, design principles and methods used in power transformer designing work, and includes limitation criteria, effective utilization of material, and calculation examples to enhance readers’ techniques of transformer design and testing. It includes: Core and winding commonly used, and their performances Insulation structures and materials, methods for improvements on dielectric strengths on partial discharge, breakdown and electrical creepage Losses and impedance calculations, major influential factors, and methods to minimize load loss Cooling design and the method to obtain effective cooling Short-circuit forces calculations, the ways to reduce the short-circuit forces, and measures to raise withstand abilities No-load and load-sound levels, the influential factors and trends, and abatement techniques In-depth discussion of an autotransformer’s special features, its stabilizing winding function, and its adequate size Tests and diagnostics The ways to optimize design are also discussed throughout the book as a goal to achieve best performances on economic design. The book contains great reference material for engineers, students, teachers, researchers and anyone in the field associated with power transformer design, manufacture, testing, application and service maintenance. It also provides a high level of detail to help future research and development maintain electrical power as a reliable and economical energy resource.