CP SB1 User Manual
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possible. This way, important preventative maintenance can be performed in
time to avoid an unexpected total failure (see Figure 5-2 "Transformer fault due
to a defective bushing") [2].
Figure 5-2 Transformer fault due to a defective bushing
The most frequent sources of failure are the tap changers, bushings, the paper-
oil insulation and the accessory equipment (see Figure 5-3 "Sources of
transformer faults").
Figure 5-3 Sources of transformer faults