Abstract: A circuit configuration monitors the electrical insulation of an electrically conductive part in relation to a first pole and a second pole of an electrical power network for example, an electrical drive network in a hybrid vehicle. The circuit configuration is characterized in that between the electrically conductive part and the two poles, a voltage divider having at least two resistors is arranged in each case. A measuring unit is associated with each of the two voltage dividers and provided for measuring a partial voltage, which drops via at least one of the resistors. A switch unit is associated each with the two voltage dividers and is provided for alternately bypassing at least one of the resistors.

Abstract: A monitoring device for protecting against contact or access to a hybrid vehicle having a plurality of high-voltage components and an electronic control unit connected to a low-voltage vehicle electrical system battery. Power actuators for actuating at least one electric machine are connected to a high-voltage battery by way of a power switch. The high-voltage components are monitored by way of a looped circuit and deactivated if the looped circuit is broken. A sensor that is sensitive to magnetic field changes is disposed in or at a removable contact connection of the electric machine or the electronic control unit. The sensor is connected to the looped circuit. A control component of the electronic control unit activates a discharge unit for discharging an energy storage device upon receiving a sensor signal generated by the sensor when the contact connection is broken.

Abstract: A high voltage plug-connector for the detachable electric connection of high voltage components, particularly an electric drive system of a motor vehicle, has a plug with electric power contacts, a socket with a mating contacts for mating with the power contacts, and a signal plug that interacts with signal contacts for activating the high voltage. The signal plug locks the plug and the socket mechanically in their plug-in position. The mechanical plug-connector has a pre-latching position in which the signal plug is guided to a releasing position and the electric contact between the power contacts and mating contacts can be released. The mechanical lock is released only when the electric contact between the power contacts and the mating contacts is opened and the signal plug is guided to a cover position in which the signal plug covers the power contacts.

Abstract: A high voltage plug-connector for the detachable electric connection of high voltage components, particularly an electric drive system of a motor vehicle, has a plug with electric power contacts, a socket with a mating contacts for mating with the power contacts, and a signal plug that interacts with signal contacts for activating the high voltage. The signal plug locks the plug and the socket mechanically in their plug-in position. The mechanical plug-connector has a pre-latching position in which the signal plug is guided to a releasing position and the electric contact between the power contacts and mating contacts can be released. The mechanical lock is released only when the electric contact between the power contacts and the mating contacts is opened and the signal plug is guided to a cover position in which the signal plug covers the power contacts.

Abstract: A monitoring device for protecting against contact or access to a hybrid vehicle having a plurality of high-voltage components and an electronic control unit connected to a low-voltage vehicle electrical system battery. Power actuators for actuating at least one electric machine are connected to a high-voltage battery by way of a power switch. The high-voltage components are monitored by way of a looped circuit and deactivated if the looped circuit is broken. A sensor that is sensitive to magnetic field changes is disposed in or at a removable contact connection of the electric machine or the electronic control unit. The sensor is connected to the looped circuit. A control component of the electronic control unit activates a discharge unit for discharging an energy storage device upon receiving a sensor signal generated by the sensor when the contact connection is broken.

Abstract: A circuit configuration monitors the electrical insulation of an electrically conductive part in relation to a first pole and a second pole of an electrical power network for example, an electrical drive network in a hybrid vehicle. The circuit configuration is characterized in that between the electrically conductive part and the two poles, a voltage divider having at least two resistors is arranged in each case. A measuring unit is associated with each of the two voltage dividers and provided for measuring a partial voltage, which drops via at least one of the resistors. A switch unit is associated each with the two voltage dividers and is provided for alternately bypassing at least one of the resistors.