Pad-mounted transformer


Thermal Image Data
IR File Name C0408-01.img
Date of IR Image 4/8/02
Time of IR Image 7:28:05AM
Ambient Temperature 20.6°F
Hot Spot 32.5°F
Reference Spot 25.5°F
Temperature Difference 7°F
Priority Rating from table below 2
Comments
H1B Pistol Grip appears warmer than H2B or H3B. Could be internal heating issue or loading imbalance.
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 1 - 3 F 1 – 10 F Possible deficiency; warrants investigation
2 4 - 15 F 11 – 20 F Indicates probable deficiency; repair as time permits
3   21 – 40 F Monitor continuously until corrective measures can be started
4 >= 16 F > 40 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.

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