Abstract: Modular circuit protection devices and configurable panelboard systems include arc-free operation, thermal management features providing safe operation in hazardous environments at lower cost and without requiring conventional explosion-proof enclosures and without entailing series connected separately provided packages such as circuit breaker devices and starter motor contactors and controls.

Abstract: A valve assembly for a fuel tank includes a cage having a seat that defines an aperture and a spring latch that holds a poppet in an intermediate-open position, which spaces the poppet from a seat to allow fluid communication through an aperture. A method of operating a valve assembly due to a first-time fueling event is disclosed.

Abstract: A power distribution assembly with boltless busbar system for electrically and mechanically connecting a component to a power source is disclosed. The power distribution assembly includes an interconnecting busbar segment that connects two boltless busbar system together. Each boltless busbar system includes a male busbar assembly and a female busbar assembly. The male busbar assembly includes a male terminal, internal spring member, internal male housing, and external male housing that receives an extent of the male terminal, the internal spring member, and the internal male housing. This male terminal includes a side wall arrangement that defines a receiver and further includes at least one contact arm. An internal spring member with at least one spring arm resides within the male terminal receiver.

Abstract: A cable gland for an armored cable comprising at least an exposed portion of the armor, comprising a clamping ring and a compression ring intended to be tightened or rotatably engaged to each other, said cable gland comprises a current conducting circular member, intended to surround the exposed portion of the armor of said cable and being attached at one end to the compression ring and at another end to the clamping ring, so that when the clamping ring and a compression ring are tightened or rotatably engaged to each other, the circular member is collapsed against an exposed portion of the armor of the cable.

Abstract: An apparatus includes a first coil, a second coil having a first side facing a first side of the first coil, a first radial array of magnetic material bodies disposed on a second side of the first coil, and a second radial array of magnetic material bodies disposed on a second side of the second coil such that respective magnetic material bodies of the second radial array overlap respective magnetic material bodies of the first radial array. The apparatus may be included in a wireless power transfer system.

Abstract: A hybrid circuit breaker for interrupting a current in an electrical circuit line, the hybrid circuit breaker includes an input terminal for connection to a power line and an output terminal for connection to a DC system, a first solid state switching device connected to the input terminal, and a mechanical isolator relay arranged in series with the first solid state switching device and connected to the output terminal. The hybrid circuit breaker further includes a crowbar circuit electrically connected between the output terminal and ground or mid-pole, and a controller for controlling the first solid state switching device, the mechanical isolator relay and the crowbar circuit.

Abstract: A relay includes an electromagnetic drive unit with a rotatable armature and a yoke. The rotatable armature includes a first magnetic contact region and the yoke includes a second magnetic contact region. The first magnetic contact region is in touch with the second magnetic contact region in a first state of the relay. The relay further includes at least one immovable first electric contact and a moveable contact arm with at least one second electric contact. The first electric contact contacts the second electric contact in the first state. The rotatable armature and the moveable contact arm are positioned together on a shaft and the shaft is embodied as a torsional element.

Abstract: Systems, methods, and control systems for a switching rocker arm assembly are disclosed. A switching rocker arm (10) engages a valve (29), the switching rocker arm (10) is movable by contact with a cam (60) having a lift portion (59) and a base circle (58). The switching rocker arm (10) comprises an inner arm (20), an outer arm (12) pivotably secured to the inner arm (20) and having a latch bore, and a latch pin (28) selectively movable between a first position where the latch pin (28) does not contact the inner arm (20), and a second position wherein the latch pin (28) contacts the inner arm (20). A solenoid assembly (500) is energized while the rocker arm is in contact with the lift portion (59) of the cam. The solenoid assembly is direct-acting and overhead and is calibratable with respect to the rocker arm.

Abstract: An electrical feedback barrier is configured to safely interconnect an intrinsically safe power supply to a non-intrinsically safe electrical load device in a hazardous environment. Electrical feedback from the non-intrinsically electrical load device is blocked by the electrical feedback barrier to protect the intrinsically safe power supply from adverse operating conditions. The electrical feedback barrier and the electrical load device are enclosed in an explosion-proof or flameproof enclosure for compliance with electrical equipment safety standards in the hazardous environment.

Abstract: An arc fault detector includes: a first electric line; a sensor for monitoring an electric current or voltage spectrum in the first electric line and outputting a broadband measurement signal as a monitored signal; a minimum detection unit for detecting a minimum signal value of the monitored signal over a broadband measurement range as a detected minimum signal value; and a controller unit connected to an output of the minimum detection unit, the controller unit comparing the detected minimum signal value with a predefined arc pattern, and outputting a trigger signal on a trigger output if the detected minimum signal value matches the arc pattern.

Abstract: A smart accessory device includes an actuator and is designed to be used to actuate an operating mechanism of a circuit breaker in order to either open or close the separable contacts of the circuit breaker. The accessory can be one of a shunt trip, spring release, or under voltage release device. The actuator includes a solenoid and plunger. The accessory determines the operating condition of the actuator based on how much current flows through the coil when the power source provides power to the accessory device, and continually executes a coil diagnostic to determine the operating condition of the coil while power is being provided to the accessory device. If the accessory fails to trip the circuit breaker when required, the accessory can determine whether the failure was due to either of the solenoid or the plunger.

Abstract: A valve train assembly for an internal combustion engine includes: a dual body rocker arm for controlling a valve of a cylinder, the rocker arm including a first body, a second body mounted for pivotal motion with respect to the first body, a first biasing means, and a latch pin moveable between a first position in which the latch pin latches the first body and the second body together and a second position in which the first body and the second body are un-latched to allow pivotal motion of the second body relative to the first body; and an actuator arrangement external to the dual body rocker arm and drivable by an actuation source, the actuator arrangement moving the latch pin from one of the first position and the second position to the other of the first position to the second position.

Abstract: Methods, devices and systems for detecting an anomaly in a power network are described. A method for detecting an anomaly in a power network includes determining a baseline power usage in the power network, receiving data indicative of an active power usage in the power network, detecting an anomaly based on a difference between the baseline power usage and the active power usage, isolating a fault for an element in the power network, responsive to detecting the anomaly, and transmitting fault isolation information indicating the fault to a user device. Related devices and systems may perform operations of the method described herein.

Abstract: A dual conductor Thomson coil actuator for use in opening the separable contacts of a circuit interrupter comprises two nested conductors wound to form a single coil, rather than the traditional design comprising one single conductor wound to form a coil of the same size. Each of the two conductors can be excited by half the capacitance that would be used to excite the traditional single conductor coil, using the same voltage as the single conductor coil. When the same total capacitor-stored energy that would be used to excite the single conductor coil is instead used to excite the dual conductor coil, the initial pulse of aggregate current through the dual conductor coil is greater than the initial pulse of current through the single conductor coil, resulting in a faster initial opening distance of the separable contacts during an opening stroke.

Abstract: A method of energy distribution from a plurality of energy sources to a plurality of loads wherein a set of selection options for a load are determined. Values are established for the selection options for each loads. The loads are then ordered into a load order according to a load ordering parameter. The energy sources are ordered in a plurality of sequences, where each sequence corresponds to a possible set of values for the selection options and wherein at least one energy source appears in more than one of the plurality of sequences. The loads are then matched with the energy sources according to the load order, with the sources in the sequence corresponding to the set of values for the selection options established for that load. A computing system designed to perform this method, and an electrical grid incorporating such a computing system are also described.

Abstract: Provided in the present utility model is a flameproof surge protector, including: a surge protector main body, a flameproof enclosure, a flameproof stopper plug, and a flameproof cable gland. One end of the flameproof enclosure is connected to the flameproof stopper plug, and the other end thereof is connected to the flameproof cable gland. The surge protector main body has an elongated shape and is disposed inside the flameproof enclosure, and a cable is drawn out of the surge protector main body by means of the flameproof cable gland. The flameproof surge protector provided by the present utility model has a simple structure and small size, can be used easily and installed inside an explosion-proof lamp, further protects a circuit inside the lamp, prevents the circuit from being damaged by surges, and is safe and reliable.

Abstract: Systems and methods for soft starting a motor (40) using solid-state switching devices are disclosed. The system (10) includes a soft starting switch (53) that is made of a plurality of solid-state switches (62, 63). The system (10) also includes a controller (86) that is programmed to regulate currents and voltages delivered to the motor (40) during a start-up operation of the motor by cycling the solid-state switches (62, 63) ON and OFF during the start-up operation.

Abstract: Solid state and hybrid circuit protection devices include improved chemical, static discharge and impact resistant housing construction, arc-free switching operation, secure terminal assemblies and thermal management features. The solid state and hybrid circuit protection devices are ignition protected and avoid possible explosions and therefore obviate a need for conventional explosion-proof enclosures to ensure safe operation of an electrical power system in a potentially explosive environment.

Abstract: Pairs of phases of an AC power source are connected to pairs of phases of a motor in a first sequence that repeats at a first frequency. The motor is braked by connecting pairs of phases of the AC power source to pairs of phases of the motor in a second sequence that is reversed with respect to the first sequence and that repeats at a second frequency less than the first frequency. In further aspects, pairs of phases of an AC power source are connected to pairs of phases of a motor in a first sequence. The motor is subsequently disconnected from the AC power source for a predetermined dwell interval having a duration greater than a time constant of the motor. The motor is braked using a second sequence that is reversed with respect to the first sequence.

Abstract: A pull box for accepting cable in electrical wiring installations includes a main body. The main body includes a first leg, a second leg, and a bridge portion spanning between and interconnecting the first leg and the second leg. The first leg, the second leg, and the bridge portion form a U-shape and define an interior space. The pull box further includes a cover. The cover is movable relative to the housing to transition the pull box between an open state and a closed state. The cover permits access to the interior space when the pull box is in the open state and prevents access to interior space when the pull box is in the closed state.