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RMO40TD DV-Win Software
When
the message “Change tap position” appears on the main window, change the tap position.
When the tap position is changed the graph with the test current during the change will be displayed.
The graph shows two diagrams.
The first diagram shows the „dynamic resistance“, represented by the
test current waveform during the transition, while the second diagram shows the AC current of the tap
changer motor drive unit.
Tap Changer Motor Current Measurement
RMO40TD has a feature for measuring the current in the tap changer motor drive unit. This feature can
be used only during those tests when the RMO40TD unit is controlled by the DV-Win software.
This feature is always active in the DV-Win, which means that two diagrams will always be visible on the
graph.
When the graph is displayed and
R is stable press
OMEGA
to measure resistance in the new tap
changer position.
Repeat this procedure until you get the diagram for each transition and the resistance result in each tap
position.
When the tap changer measurement has started, the DV-Win software performs automatic
compensation of current clamps. This compensation is performed between the moment when the
measurement is initiated by pressing OMEGA button for the first time and the moment when the tap
changer position is changed for the first time. There should not be any current present in the tap changer
