Omicron CP TD1 - Temperature Correction Factors; 12.11.1 Transformers

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Appendix
12.11 Temperature Correction Factors
The temperature curves can be used in the TanDelta test card (see
3.4 ”TanDelta Test Card - Settings Page (2/2)” on page 30).
where
PF(DF)
20
is the corrected Power Factor (Dissipation Factor) to 20 °C
PF(DF)
T
is the Power Factor (Dissipation Factor) measured at T
k is the correction factor
12.11.1 Transformers
PF D F()
20
PF DF()
T
k×=
1.3
1.2
1.1
1.0
0.9
0.8
0.7
0.6
0.5
0.4
0.3
010 203040 506070
DF Correction Factor k
Temperature in °C
IEEE Std. C57.12.90