What is a full set of data on a Transformer?

• Vibration Spectrums on all Sides of the Transformer and
  Cooling Pumps

• Recent set of Oil DGA/Quality Results
• Oil Analyzed combustible gasses, quality and Furanic Compounds
• Sound Level Readings From all Sides
• Ultrasonic Activity Levels on all Sides
• Complete IR Survey
• Oil Pump Flow Readings in GPM as Required
• Close Visual Inspection
• Airborne Ultrasonic levels
• Functional Tests Performed

Are any of these tasks more important than others?

No, if knowing the current condition of your equipment is important to you.