Dry type transformer

Dry type transformer thermal image
Dry type transformer original photo
Thermal Image Data
IR File Name C0806-02.img
Date of IR Image 8/6/2002
Time of IR Image 7:31:30 AM
Ambient Temperature 74.4�F
Hot Spot 200.5°F
Reference Spot 104.7°F
Temperature Difference 96°F
Priority Rating from table below 4
Middle tap connection needs to be reterminated. Current readings taken left to right 84, 85, and 65.
Priority Rating Table
  Temperature difference (delta T) based on comparisons between similar components under similar loading Temperature difference (delta T) based on comparisons between component and ambient air temperature Recommended Action
1 2 - 5 F 2 - 18 F Possible deficiency; warrants investigation
2 7 - 27 F 20 - 36 F Indicates probable deficiency; repair as time permits
3   38 - 72 F Monitor continuously until corrective measures can be started
4 >= 29 F > 72 F Major discrepancy; repair immediately
N.E.T.A. Maintenance Testing Specifications, for electrical equipment used for priority rating table.

Return to planning and prioritization schematic.