An Introduction to Electrical Transformer Testing for Professional Engineers

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.