MR ETOS IM - Function Description

4 Product description
Maschinenfabrik Reinhausen GmbH 201926 5163667/06 ENETOS
®
IM
4.2 Function description
The device is used to record the measured values and status data of a
power transformer and an on-load tap-changer and to make them available
using a web-based visualization. In addition to this, the parameters can be
changed via the visualization. You can set the required parameters for a reg-
ulation function depending on device configuration. The device can be incor-
porated into a control system (SCADA).
ISM®
Signals
SCADA
Visualization
via web browser
Figure3: Function description
4.2.1 Bushing monitoring
The optional bushing monitoring function is used to monitor capacitance-
graded bushings on power transformers. You can use the function to detect
breakdowns at partial capacitances in the bushings and to monitor aging in
the bushings.
In order to evaluate the state of the bushing, the bushings are equipped with
a measuring device with which the system can continuously determine the
change in capacitance ΔC1 and the change in dissipation factor Δtanδ of the
bushings during operation. In addition, the system records the voltage of the
3-phase reference system.