Operating Modes
34
A dielectric strength test carried out to standard is generally deemed to have been
successfully passed if there were no breakdowns in the test object throughout the
duration of the test. In addition to this clear statement, further conclusions can be drawn
on the state of the test object using the trend over time of the leakage current or the
tanδ measured values.
E.g. a falling tanDelta can indicate wet cables / accessories, while a tanDelta increasing
over time can be a definite indication of an emerging cable fault.
test results
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