Omicron CP TD1 - Page 105

105
Capacitance and DF Measurement on High-Voltage Bushings
Figure 7-12 Aging of RBP, RIP and OIP bushings (change of DF)
RBP bushings show a significant change of capacitance and dissipation factor.
In [4.6] RBP, RIP and OIP bushings were analyzed over more than 30 years
(Figures 7-13 and 7-14). What is important are the curves for the upper limits,
which were found.
10
2.0
1.5
1.0
0.5
0.0
2.0
1.5
1.0
0.5
0.0
2.0
1.5
1.0
0.5
0.0
0 5 10 15 20 25 30 35 40 years
DF in % RBPDF in % OIPDF in % RIP