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7 Operation
Maschinenfabrik Reinhausen GmbH 2019
218
5163667/06 EN
ETOS
®
IM
F1/F2-tanδ: Perform standardization
You can use this parameter to perform a standardization of the dissipation
factor monitoring in field 1 and field 2. This clears all of the measured and
calculated values for dissipation factor monitoring.
To perform the standardization, proceed as follows:
1. Go to
Settings > Parameters > Bushing monitoring field1/field2 > F1/
F2-tanδ: Perform standardization
.
2. Select the
Yes
option.
3. Press the
Accept
button to perform the standardization.
7.15.3 Displaying the state of the bushings
The device displays the current state of the bushings and the following mea-
sured values:
▪ Status indicator for the bushing based on the set limit values
– Gray: Everything OK
– Yellow: The capacitance difference ΔC1 is greater than the limit value
ΔC1 > or the dissipation factor difference Δtanδ is greater than the limit
value Δtanδ >
– Red: The capacitance difference ΔC1 is greater than the limit value
ΔC1 >>
▪ C1: Calculated (compensated) bushing capacitance
▪ ∆C1: Percentage deviation of the capacitance difference ΔC1 from the ref-
erence capacitance C1
▪ Δtanδ: Dissipation factor difference Δtanδ
▪ U ref: Currently measured reference system voltage
If bushing monitoring with the option "Monitoring of 6 bushings" is used, the
following values will be displayed in two separate views for field 1 (F1) and
field 2 (F2).
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