Abstract: Different adapters and applications may publish information on the messaging bus and retrieve information from the bus simultaneously in a manner that does not cause interference or problems in the publication or retrieval. Meter data is cleaned, validated and estimated by separate applications using the above-described application and retrieval processes via the message bus for flexible and efficient processing.

Abstract: An electronic circuit breaker may include a monitoring circuit configured to monitor and respond to a power supply and/or detection circuit failure within the electronic circuit breaker. In some embodiments, the monitoring circuit may monitor a DC current received from a detection circuit within the electronic circuit breaker. A response to a power supply and/or detection circuit failure may include interrupting current flow between an electrical power source and an electrical circuit protected by the electronic circuit breaker. Methods of monitoring and responding to a power supply and/or detection circuit failure within an electronic circuit breaker are also provided, as are other aspects.

Abstract: A modular bucket assembly of a low voltage switchgear includes a box shaped bucket having an interior bucket side wall, an exterior bucket side wall with vents in a first periphery, a bucket rear wall, a bucket top wall and a bucket bottom wall. All of the bucket walls define an auxiliary compartment of a switchgear cabinet. The vents in the exterior bucket side wall define an arc gas venting passage in communication with an interior of the auxiliary compartment for exhausting arc gasses to an exterior of the cabinet. The modular bucket assembly further comprises a metal enclosure mounted on the bucket bottom wall. The metal enclosure has a side opening with a second periphery such that the second periphery overlaps the first periphery of the exterior bucket side wall. The metal enclosure is configured to house direct power connected devices and protective fuses and withstand arc fault pressures.

Abstract: A warning system comprising an advanced preemption system is provided to provide warning of an additional advanced preemption time directly from a wayside inspector to a city traffic controller to turn one or more traffic lights red on a route intersecting with the railroad crossing. The advanced preemption system includes a first set of wireless magnetometers to be installed on a railway track of the railroad crossing on a first side of the railroad crossing. The first set of wireless magnetometers to be located at an advanced preemption crossing start activation point that is being at a distance before an existing crossing start activation point of the railroad crossing to provide the warning of the additional advanced preemption time.

Abstract: Methods, mediums, and systems include use of a system manger application in a data processing system to create a replay in a graphical user interface, to receive replay criteria, identify any replay devices, replay sensors, replay actuators, and replay functions corresponding to the replay criteria from among the plurality of devices, sensors, and actuators, identify a replay time period corresponding to the replay criteria, gather replay data for the identified replay devices, replay sensors, replay actuators, or replay functions corresponding to the replay criteria that was generated during the replay time period, and display the replay in the graphical user interface according to the replay data.

Abstract: A main feed thru unit configured as a service equipment or a main service disconnect is provided for distributing power in modular metering mains. The main feed thru unit comprises an enclosure having a back side, a first side, a second side, a top side and a bottom side and a bus assembly. The bus assembly includes a feed thru bus assembly including a plurality of feed thru bus bars configured to receive line power at feed line terminals and pass thru power to feed thru terminals, a cross bus assembly including a plurality of cross bus bars extending between the first side and the second side and a main breaker coupled between the feed line terminals and the plurality of cross bus bars to feed power thru and output power via the plurality of cross bus bars. The enclosure is configured to allow electrical connection to the plurality of cross bus bars through an opening in at least one of the first side and the second side.

Abstract: A residential circuit breaker is provided with means for showing proper installation of a panel wire to ensure that an installer/a contractor is aware that the panel wire has been fully inserted into a circuit breaker lug. The residential circuit breaker comprises a circuit breaker lug having a lug body and a lug body screw. The residential circuit breaker further comprises a panel wire install indicator to indicate proper insertion of a panel wire in the lug body by providing a visual indication to an installer/contractor that the panel wire has been fully inserted in the circuit breaker lug during and after installation. The panel wire install indicator includes a panel wire indicator lever wherein the panel wire indicator lever can indicate if the panel wire has been installed properly and wherein there is a visual indication if the panel wire is no longer present in the lug body.

Abstract: An electric machine includes an enclosure housing multiple electrical components including a rotor assembly and a stator assembly, a heat exchanger coupled to the enclosure for cooling of the electrical components by creating an internal fluid flow circuit between the heat exchanger and the electrical components, wherein the heat exchanger comprises multiple cooling fluid inlets and a common cooling fluid outlet, wherein the multiple cooling fluid inlets are arranged so that cooling fluid enters the heat exchanger at different sections, and wherein the cooling fluid exits the heat exchanger through the common cooling fluid outlet.

Abstract: An electric machine comprises a frame, a cooling fan disposed in a fan housing and an integrated airflow inducer in a shape of a partial cone. The partial cone defines a skirt disposed as a differential sized ring with a larger entrance and a smaller exit around the frame of the electric machine at a boundary between the frame and the fan housing including a rotating fan to cool the electric machine. The integrated airflow inducer includes an inducer inlet and an inducer outlet. The integrated airflow inducer is configured to increase an airflow across the frame of the electric machine as the rotating fan develops a higher pressure at the inducer outlet than the inducer inlet of the integrated airflow inducer so that the integrated airflow inducer takes advantage of the high pressure to draw in air from a low pressure at the inducer inlet so that the electric machine operates at a lower temperature than without the integrated airflow inducer.

Abstract: A busway tap off system is provided for connecting an electrical supply to a distribution device. The busway tap off system comprises a joint mounted tap box configured for making an electrical connection between an electrical busway and a power distribution system including a downstream panel. The joint mounted tap box is a dynamically mounted electrical equipment and the downstream panel is a rigidly mounted electrical equipment. The busway tap off system further comprises electrical cables that connect the two equipments. The busway tap off system further comprises a nipple accessory that provides a flexible mechanical and electrical connection between the dynamically mounted electrical equipment and the rigidly mounted electrical equipment. The nipple accessory is configured as a rigidly-constructed flexible fitting that includes two axial slides that enable the nipple accessory to move with the dynamically mounted electrical equipment yet remains fixed to the rigidly mounted electrical equipment.

Abstract: An expandable bused elbow is provided for connecting modular metering equipment around an inside corner. The expandable bused elbow comprises an enclosure configured to fit in a gap between modular equipment. The enclosure has a box assembly with a sliding mechanism that enables expansion of the box assembly. The expandable bused elbow further comprises a first bussed interior assembly enclosed within the enclosure having a first bottom end and a second bussed interior assembly enclosed within the enclosure having a second bottom end. The first bussed interior assembly has a first bussing expansion mechanism that enables expansion of the first bussed interior assembly. The second bussed interior assembly has a second bussing expansion mechanism that enables expansion of the second bussed interior assembly. The expandable bused elbow further comprises a center corner assembly disposed in a middle space between the first bussed interior assembly and the second bussed interior assembly.

Abstract: An electrical bus bar assembly configured to maintain spacing between run-over bus bars and horizontal bus bars. The electrical bus bar assembly having a first run-over bus bar and a second run-over bus bar spaced from the first run-over bus bar, and a first horizontal bus bar spaced from the first run-over bus bar. A yoke brace apparatus is coupled between and maintains a first spacing distance D1 between the first run-over bus bar and the second run-over bus bar, and one or more bus bar brace apparatus are provided to maintain a second spacing distance D2 between the first run-over bus bar and the first horizontal bus bar. Yoke brace apparatus and bus bar brace assemblies, bus bar assemblies including the yoke brace apparatus and/or bus bar brace apparatus, bus bar support assemblies, supported electrical bus bar assemblies, and methods of supporting electrical bus bars are disclosed, as are other aspects.

Abstract: For air distribution or extraction, fan speed is controlled using modeling to account for venturi air valves. A minimum pressure for each venturi air valve is incorporated into the model. The pressure losses for various duct airpaths to terminal units is calculated based, in part, on the minimum pressure of any venturi valve. The fan set point or operation is established based on the highest needed pressure in the various airpaths connected with the fan.

Abstract: A motor control unit (MCU) and methods of operating and assembling the same are provided. The MCU includes a housing enclosing a retractable stab assembly (RSA) having stabs attached thereto. The MCU further includes a bracket assembly having a mount for securing the bracket assembly to the RSA, guiderails for slideably engaging the RSA to facilitate the extending and retracting motion, and a lead screw accessible via an opening in the front of the housing. Rotating the lead screw causes the RSA to extend and retract which engages and disengages the stabs. The MCU also includes a motor assembly having a drive motor coupled to a drive shaft. The motor rotates the shaft in response to control signals from a remote-device. The motor assembly attaches to the housing such that the rotation of the shaft in response to the signals rotates the lead screw to engage and disengage the stabs.

Abstract: A multi-pole circuit breaker such as a residential electronic circuit breaker is provided. It includes a means to prevent a breaker mechanism from latching, i.e., a breaker armature from latching with a cradle if certain criterion is met. In particular, the multi-pole circuit breaker comprises a breaker mechanism including a breaker armature, a cradle and an armature latch bar to prevent the breaker armature from latching with the cradle. The armature latch bar includes a recessed feature that interfaces with the breaker armature, an armature latching surface that needs to be removed before the breaker mechanism can be latched and an armature latching lever that prevents a rotation of the breaker armature.

Abstract: An output module includes multiple outputs, each output having switches, wherein the switches are configured such that a load is connectable between the switches, and a calibration unit configured to disconnect the load from the switches for a calibration period, monitor a behavior of the load while disconnected, and store samples of the behavior of the load. Further aspects of the present disclosure relate to a control system and a method for testing an output module connected to a complex load.

Abstract: An electric vehicle supply equipment (EVSE) charging system includes an EVSE charging station that is configured to switch a power source between a first power source and a second power source based on a time of use or real-time energy pricing data from a utility. Switching additionally and/or optionally may be based on at least one of charging information and metering information. The first power source may be a renewable source and the second source may be the power grid. In this way, a smart electric vehicle supply equipment (EVSE) charging station may manage and optimize energy supply from a grid and a renewable source when charging an electric vehicle (EV) with the smart the EVSE charging station.

Abstract: An electronic circuit breaker comprises an arc interruption mechanism that would enhance arc attraction to arc plates and would reduce the possibilities of an arc escaping from the arc plates. The arc interruption mechanism includes an enhanced arc extinguishing chamber. The arc extinguishing chamber includes a plurality of arc plates having first and second sides. The circuit breaker further comprises a stationary contact plate that includes a first arc runner disposed near the first side of the plurality of arc plates. The circuit breaker further comprises a load terminal that includes a second arc runner disposed near the second side of the plurality of arc plates. As an arc is attracted by the plurality of arc plates and the arc enters the plurality of arc plates, a length of a current path associated with the arc is reduced through the first arc runner and the second arc runner by reducing a resistance of the current path for the arc or by reducing a voltage across the circuit breaker.

Abstract: Technical solutions are described for tuning a building control system, such as a variable air volume system, which includes intervened control loops. In one aspect, a method includes receiving a performance objective of the system. The method also includes generating a collection of values for parameters of the control loops based on stored information that includes a stored velocity and a stored position. The method also includes evaluating the collection of values for the parameters by comparing a performance measure and the performance objective of the system. In response to a difference between the performance objective and the performance measure satisfying a predetermined threshold the collection of values are stored and the control loops are configured according to the stored information for the parameters. The present document further describes examples of other aspects such as systems, computer products.

Abstract: A rotating electrical machine with one or more heating elements is provided in that the one or more heating elements mount circumferentially on an inside of a frame or enclosure of the rotating electrical machine. The rotating electrical machine comprises an enclosure with multiple cooling fins, insulated stator windings positioned inside the enclosure, and a heating element positioned inside the enclosure. The heating element provides suitable heating of the insulated stator windings through heated air to prevent condensation while being physically decoupled from an insulation of the insulated stator windings.