A power plug with leakage current protection device, which includes a body formed of an upper cover and a base, a core assembly disposed in the body, a cable assembly attached to the body, a plurality of input insertion plates and output moving contact arms which are assembled with the core assembly, and an insertion plate sleeve disposed on the base, where the input insertion plates pass through the insertion plate sleeve to protrude from the base. The insertion plate sleeve is made of an insulating and temperature resistant material. The power plug has a simple overall structure and can be assembled easily and reliably. It can prevent the safety risk caused by high temperature of the input insertion plates without increasing the size of the plug. It also has low cost, and can be suitably employed in various types of power plugs.

A hybrid vehicle includes a hybrid powertrain having a high-voltage power bus. The vehicle further includes an electrical outlet having at least one socket configured to receive a power cord of an electrical load. A vehicle controller is programmed to receive a user-specified current limit for the socket, and, responsive to current of the socket exceeding the user-specified limit, de-energize the socket.

The invention relates to the novel ornamental and utilitarian features for a back power control system comprising a backup power control unit in communication with a remote sensing unit where the backup power control unit receives power from an external power source such as a power generator and back-feeds power into an electrical circuit output.

The invention relates to novel ornamental and utilitarian features of a backup power control system comprising a remote sensing unit in communication with a backup power control unit. The remote sensing unit is configured to detect the status of a power grid and transmit such status to the backup power control unit.

A solid dielectric deadfront electrical switch assembly having a switch contact assembly. The switch contact assembly can include an upper insulative diaphragm, a male pin contact having an insulating tip and an isolating sleeve, a primary contact, a lower insulative diaphragm, and a female socket contact. The upper insulative diaphragm, isolating sleeve, and insulating tip can assist in electrically isolating the male contact pin when the electrical switch assembly is in an open condition. Further, the upper insulative diaphragm can be separated from the female socket contact, and/or a female-contact insulating sleeve, by a gap chamber that utilizes air as an insulator. The lower insulative diaphragm can be configured to engage a drive rod that is used to axially displace the male pin contact between open and closed positions in a manner that may prevent arcing between the switch contact assembly and a base plate of a switchgear.

A ground overcurrent control system includes ground circuit with a first section and a second section. The first section is electrically connected to a ground member of an electrical connector and the second section is electrically connected to a ground reference. A switch element is positioned between the first section of the ground circuit and the second section of the ground circuit. A controller is configured to determine the current within the ground circuit while current is passing through the switch element and, upon the current exceeding a current threshold, the switch element is modified to an open condition. Upon determining that the voltage between the first section of the ground circuit and the ground reference is less than a voltage threshold, a command is generated to modify the switch element back to a closed condition.

A method of ensuring power delivery in a universal serial bus (USB) interface between a device and a counterpart device, the device including a port controller and a USB receptacle. The method includes the port controller attempting to detect an abnormal state in which a leakage current occurs in the USB receptacle using at least one pin of the USB receptacle; and when the abnormal state is detected, the port controller turning OFF a switch connected between a power pin of the USB receptacle and an internal circuit of the device, and determining to enter an unattached state of being separated from the counterpart device.

To reduce sparks and arcing if an RJ plug is removed from an RJ jack while a PoE signal is present, the plug includes conductive metal blades. Each blade includes a first portion to conduct electrical signals and/or power (SAOP) between the blade and a wire within the plug. Each blade includes a second portion and a spaced third portion to conduct SAOP between the blade and a contact within a jack. A first electrical resistance value between the second portion and the first portion is at least 5% greater as compared to a second electrical resistance value between the third portion and the first portion.

An overhead arm assembly for a patient support apparatus includes a user interface device. The user interface device has a support structure for supporting a personal digital assistant and a charging port for personal digital assistant.

An electrical power cable is provided with two ends and an elongated length therebetween. The cable includes one or more conductors for conducting electrical power from a power source to an electrical load. One end includes a switch and a relay to provide electrical power to the electrical load and to disconnect an electrical contact from the power conductor.