Basic description of the Transformer Monitor
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If remote temperature gauges are used, both the hot-spot temperature and the oil temper-
ature can be provided as mA output.
The oil or hot-spot temperature function enables up to six groups of fans, two oil pumps
and a heater to be connected.
Figure 5: Diagram of the oil temperature measurement in the tap changer
If the oil temperature in the tap changer vessel is also to be recorded, a second mA or
PT100 input must be available.
Figure 6: Fill level determination diagram
The fill levels of the transformer and/or tap changer can also be recorded and fed into the
controller. The information can be displayed on the Control unit's screen and if necessary
transferred to a SCADA system (Figure 1).
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