Introductory technical guidance for electrical engineers interested in inspection and testing of electrical distribution transformers. 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 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 professional engineers interested in inspection of oil filled electric transformers. Here is what is discussed: 1. INTRODUCTION, 2. TRANSFORMER TANK, 3. TOP OIL THERMOMETERS, 4. WINDING TEMPERATURE THERMOMETERS, 5. OIL LEVEL INDICATORS, 6. PRESSURE RELIEF DEVICES, 7. SUDDEN PRESSURE RELAY, 8. BUCHHOLZ RELAY, 9. TRANSFORMER BUSHINGS: TESTING AND MAINTENANCE OF HIGH-VOLTAGE BUSHINGS, 10. OIL PRESERVATION SEALING SYSTEMS, 11. AUXILIARY TANK SEALING SYSTEM.

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 electric power distribution system managers interested in routine inspection and maintenance of electric transformers. Here is what is discussed: 1. BACKGROUND, 2. TRANSFORMER COOLING METHODS INTRODUCTION, 3. DRY-TYPE TRANSFORMERS, 4. LIQUID-IMMERSED TRANSFORMERS, 5. OIL-FILLED TRANSFORMER INSPECTIONS.