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3 Debye equation
Cole-Cole equation
/ε 0
2
-ε
1
0
2.0 2.5 3.0 3.5 4.0 4.5 5.0
ε /ε 0
Figure 4.8: Cole–Cole diagram for transformer oil found using Debye equation and Cole–
Cole equation with α = 0.23.
ε /ε
0
5
4
3
Debye equation
Cole-Cole equation
2
−ε /ε
0
1
0
5 7 9
log ( f )
10
Figure 4.9: Relaxation spectrum for transformer oil found using Debye equation and
Cole–Cole equation with α = 0.23.
© 2001 by CRC Press LLC
