The WB-TVM is typically as a voltage monitor for contact line voltage DC traction systems and for data acquisition to ssensitive point of the infrastructure used.
This is necessary, for example, if measurements have to be carried out before connecting the different parts of the S-Bahn or U-Bahn.
An electrical connection of the sections may only be made if all voltage values are within a certain window.
Another area of application is the display of high voltages in safety areas, e.g. a power rail in the subway area.