Selecting "Compensations" converts the actually measured dissipation or
power factor to normalized values corresponding to an ambient temperature of
20°C. In doing so, the values entered at "Compensations" represent the existing
ambient condition.
– Enter oil temperature, ambient temperature (at bushing) and relative
humidity first.
– Then place the cursor on "k".
The medium the measurement takes place in, oil or air, determines the k-factor.
– ANSI C57.12
The oil temperature is the determining medium for the k-factor.
– Bushings
The air temperature at the respective bushing is the determining medium for
the k-factor. B
USHINGS provides three bushing types to select from: RBP
(Resin Bonded Paper), RIP (Resin Impregnated Paper) and OIP (Oil
Impregnated Paper). The k-factor changes accordingly.
Select if you use an external
CT.
The entered ratio is used to
calculate the measured current
accordingly.
Note: "Use ext. CT" can only
be selected if there are no
measurement results yet.
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