Apparatus and method for the limitation of the rails potential in the case of a current path of the same

摘要

The invention relates to a device and a method for the limitation of the rails in the case of a potential which is equal to current path, wherein a low-resistance connecting line (8) between the rail (1) and the building ground (2) is arranged. In this case, in the connecting line (8) a switching device (7), via a control line with a control unit (4) which is connected to a between the rail (1) and the building ground (2) arranged voltmeter (3) in communication. It is provided that the switching device (7) has a contactor coil (6) with a dynamic control unit (4) is connected. If the voltage between the rail (1) and the building ground (2) exceeds a threshold value, the switching device (7) and switches off, as a result, the connecting line (8) becomes conductive.