Device for monitoring a high-voltage on-board power supply system of an electrically operated vehicle for the occurrence of overloading

A system, comprising:

• a high-voltage vehicle power supply system of an electrically operable vehicle, the high-voltage vehicle power supply system operating between 48 and 400 volts and having the following components electrically connected via power supply lines:
• one or more energy sources and/or energy sinks having fusible links connected via respective lines of a conductor run arrangement to the power supply lines,
• a vehicle storage battery, and
• drive motor control electronics;
• and
• a monitoring apparatus, comprising:
• at least one current sensor, wherein each current sensor is associated with a respective component of the high-voltage vehicle power supply system, and wherein each current sensor is configured to measure and transmit current-level-over-time data reflective of a respective current level of a respective current flowing through the respective component;
• and
• an evaluation unit, configured to:
• receive the current-level-over-time data,
• compare the current-level-over-time data with a first current-level-over-time threshold and a second current-level-over-time threshold, and
• output a disconnection signal electrically disconnecting the respective component when, as a first criterion, the respective current is between the first and second current-level-over-time thresholds.