POWER SUPPLY APPLIANCE AND POWER SUPPLY SYSTEM WITH AN APPLIANCE SUCH AS THIS

摘要

The object of the invention is a power supply device (12) having a control and/or regulating unit (22), a reference potential connection (26), at least one voltage potential connection (28), and a ground connection (30) for grounding the power supply device (12). It is provided that the power supply device has a permanent or switchable device internal short-circuit current path (40) between the reference potential connection (26) and the ground connection (30), a detection device (44) for the continuous or quasi-continuous detection of a current flowing through the short-circuit current path (46), which connects the detection device (44) with the control and/or regulating unit (22) in a signal technical manner. The invention further relates to a respective power supply system (10).