A method is provided for operating a vehicle-external charging device (1) for charging an electric or hybrid vehicle. The method checks an electrical connection of an insulation monitor (3) between a contactor (4) of the charging device (1) and a charging cable (5) of the charging device (1) when the contactor (4) is in a closed switching state and also uses the insulation monitor to check an electrical insulation of the charging cable (5) when the contactor (4) is in an open switching state. A charging device (1) also is provided.

A method is provided for operating a vehicle-external charging device (1) for charging an electric or hybrid vehicle. The method checks an electrical connection of an insulation monitor (3) between a contactor (4) of the charging device (1) and a charging cable (5) of the charging device (1) when the contactor (4) is in a closed switching state and also uses the insulation monitor to check an electrical insulation of the charging cable (5) when the contactor (4) is in an open switching state. A charging device (1) also is provided.

Disclosed are a non-to-the-home type device and method for detecting electric meter misconnection based on the PLC communication technology and using multiple frequencies. The detection device includes a master detection device and a slave detection device. The master detection device acquires address information of different electric meters at the outlet terminals of the electric meters by using RS485 communication. The modulation circuit modulates the communication address information of different electric meters into high-frequency carrier signals of different frequencies, and sends the high-frequency carrier signals to user sides by using the PLC communication technology. A line trap is provided between the modulation circuit and the electric meters. The slave detection device has a high-frequency carrier signal detection antenna. The user side detects the high-frequency carrier signal, demodulates the high-frequency carrier signal to obtain the high-frequency carrier signal frequency and the communication address information of the electric meter corresponding to user.

Disclosed are a non-to-the-home type device and method for detecting electric meter misconnection based on the PLC communication technology and using multiple frequencies. The detection device includes a master detection device and a slave detection device. The master detection device acquires address information of different electric meters at the outlet terminals of the electric meters by using RS485 communication. The modulation circuit modulates the communication address information of different electric meters into high-frequency carrier signals of different frequencies, and sends the high-frequency carrier signals to user sides by using the PLC communication technology. A line trap is provided between the modulation circuit and the electric meters. The slave detection device has a high-frequency carrier signal detection antenna. The user side detects the high-frequency carrier signal, demodulates the high-frequency carrier signal to obtain the high-frequency carrier signal frequency and the communication address information of the electric meter corresponding to user.

A magnetic connector for connecting an electrical unit to an electrical consumer unit includes at least one magnet, a conductive metal part secured to this magnet, a connecting cable fixed to the conductive metal part, and a cap made of plastic material overmoulded on the connecting cable, the conductive metal part and the magnet, except for a contact surface of the magnet intended to make contact with a metal part of the electrical consumer unit.

Apparatuses and methods for testing electrical wiring of a device are provided. In one example, the device has a conductive portion, an electrical component, and a multiphase plug that is electrically coupled to a neutral conductor and at least two phase conductors. The neutral conductor is coupled to the conductive portion and the at least two phase conductors are coupled to the electrical component. The apparatus includes a receptacle that removably couples to the multiphase plug. A grounding cable removably couples to the conductive portion. A power supply generates power and is in electrical communication with the receptacle to communicate the power to the receptacle. An annunciator is in electrical communication with the power supply and the grounding cable and is configured to generate a response when the receptacle, the multiphase plug, the conductive portion, and the grounding cable are in electrical communication to communicate the power therethrough.

The present invention provides a multi ground line disconnection inspection device as a device for inspecting whether a plurality of ground lines that are connected to a ground node of an electronic control device are disconnected, including a plurality of test lines having one end connected to a plurality of ground lines, respectively, a plurality of connection switches connected to the ground node and the other end of a plurality of test lines, respectively, a plurality of test power supplies for applying test voltages to a plurality of test nodes respectively positioned on a plurality of test lines, respectively, and a determination unit for determining whether a plurality of ground lines are disconnected by detecting voltages of a plurality of test nodes.

The present invention provides a multi ground line disconnection inspection device as a device for inspecting whether a plurality of ground lines that are connected to a ground node of an electronic control device are disconnected, including a plurality of test lines having one end connected to a plurality of ground lines, respectively, a plurality of connection switches connected to the ground node and the other end of a plurality of test lines, respectively, a plurality of test power supplies for applying test voltages to a plurality of test nodes respectively positioned on a plurality of test lines, respectively, and a determination unit for determining whether a plurality of ground lines are disconnected by detecting voltages of a plurality of test nodes.

According to one embodiment, a crimping judgment method is a method of judging a goodness of a crimped state of a wire harness including a crimping terminal crimped to an electrical wire. The crimping judgment method includes a first process, a second process, and a third process. The first process includes acquiring image data of a crimped portion of the wire harness. The second process includes determining first data, which is numerical data, of a void of the crimped portion from the image data. The third process includes judging the goodness of the crimped state of the crimped portion based on the first data.

According to one embodiment, a crimping judgment method is a method of judging a goodness of a crimped state of a wire harness including a crimping terminal crimped to an electrical wire. The crimping judgment method includes a first process, a second process, and a third process. The first process includes acquiring image data of a crimped portion of the wire harness. The second process includes determining first data, which is numerical data, of a void of the crimped portion from the image data. The third process includes judging the goodness of the crimped state of the crimped portion based on the first data.