Qualitrol 509ITM Series, Manual, Page: 100 / 189

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Temperature Profiler
This section of the TransLife
TM
Setup window allows you to configure the Temperature
Profiler. The Temperature Profiler has 12 ranges of temperature values - six ranges each
above and below the value in the
Unity Temperature field.
The Temperature Profiler monitors how many hours the measured winding temperature
remains in each temperature range. This provides you with a visual indication of how and
when the transformer has been used in conjunction with the consumed life value, and it
provides a more accurate indication of the total loss of life of the transformer.
The ranges are divided into six-degree increments, because the consumed life of a
transformer doubles for approximately every six degree rise in temperature.
The Temperature Profiler section includes the fields described below.
Unity
Temperature Allows you to enter a temperature value where one hour of operating
time equals one hour of consumed life. If the Unity Temperature
parameter is unknown, use the recommended values from
the table
provided in the Consumed Life section .
Temperature
Legends The 12 temperature legends are displayed after you:
1. Enter a temperature value in the Unity Temperature field.
2. Press [Load].
3. Re-enter the TransLife
TM
Setup window.
The legends will be in 12 ranges, 6 below the Unity Temperature and 6
above.
12
Temperature
Range Fields Display the amount of hours the selected winding temperature remained
in each range.
Graph Button
Displays a bar graph of the 12 temperature ranges. The 6 blue ranges
indicate the operating times that exceeded the consumed life rate.
Conversely, 6 red ranges indicate the consumed life that exceeded the
operating time.