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Present Loss
of Life Rate
Displays the consumed life rate of the winding at this instant in time.
Example:
If the Unity Hot Spot Temperature is 110° C and the winding is
reading exactly 110° C, the present loss of life rate is 1.00.
Loss of Life in
the Last Hour
Displays the consumed life lost in the past hour.
Loss of Life in
the Last Day
In hours, displays the consumed life lost in the past 24 hours.
Total Loss of
Life
Displays the total loss of consumed life for the transformer. If the
consumed life is known, this value can be preset for transformers that are
already commissioned.
Assumed
Transformer
Life
Transformer life entered by the user. Default value is 20 years.
Remaining
Life Left
Displays the remaining life left of the transformer by subtracting the total
loss of life calculated so far from the assumed transformer life.
Operating
Hours
Displays the operating hours of the 509ITM. You can preset this number.
Critical Forecast
allows you to set up the Critical Forecast
feature. For the present loading conditions, the Critical Forecast can predict how long it will
take the winding temperature to reach a given critical temperature.
Before you use the Critical Forecast feature:
•
Check that values are entered in the
Oil Rise Temperature
and
Oil Time Constant
fields for the winding temperature input module. See
more information about these parameters.
•
Check that input modules are selected in the
Ambient Temperature Input Module #
and
Oil Temperature Input Module #
TransLife
TM
Setup
window.
•
If the winding temperature is to be measured directly with a fiber optic probe, check
that a CT, Current input module is selected in the
Load Current Input Module #
field
TransLife
TM
Setup
window.
Summary of Contents for 509ITM Series
Page 26: ...26 www qualitrolcorp com Current Input Wiring...
Page 55: ...55 www qualitrolcorp com 3 Continue with the setup procedure...
Page 101: ...101 www qualitrolcorp com...
Page 144: ...144 www qualitrolcorp com The following window will appear...
Page 167: ...167 www qualitrolcorp com The Customer Setup window displays 4 Click Load Tap Changer...
Page 178: ...178 www qualitrolcorp com Appendix...
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