Abstract: A method (and system) for causal modeling includes modeling a data set using a reverse Bayesian forest.

Abstract: A connector arrangement for packaged electrical systems, such as motor control centers includes a component connector assembly mounted to component supports for providing network signals and control power to components on the support. A mating prewired connector assembly in the enclosure is forced to mate with the component connector assembly when the component support is fully engaged within the enclosure. Thereafter, the component support may be partially withdrawn from the enclosure to disconnect main power from the component support, while leaving network connections and control power connections by virtue of the mated connectors. The connectors engage by non-sliding contact both when fully engaged and when the components are partially withdrawn from the enclosure.

Abstract: A method and apparatus is disclosed for determining power line parameter of a system. Specifically, there is provided a system for determining comprising a networked device including a voltage perturbation circuit coupled to a voltage source and configured to perturb the waveform of the voltage source, and a voltage measurement circuit coupled to the voltage source and configured to transmit voltage measurements of the waveform over a network and a remote monitoring unit, coupled to the network, and configured to receive the voltage measurements over the network and to calculate an incident energy using the voltage measurements.

Abstract: A system and method for detecting trends in time-managed lifetime data for products shipped in distinct vintages within a time window. Data is consolidated from several sources and represented in a form amenable to detection of trends using a criterion for measuring failure. A weight is applied to the failure measures, the weight increasing over the time the products are in the time window. A function of weighted failures is used to define a severity index for proximity to an unacceptable level of failures, and an alarm signal is triggered at a threshold level that allows the level of false alarms to be pre-set.

Abstract: A motor control center (MCC) is provided. The MCC includes a power and data distribution bus comprising a plurality of conductive bars for distributing power and data signals within the MCC. In one embodiment, the plurality of conductive bars is configured to receive and distribute three-phase power from an external power source. The MCC may also include a device configured to receive power and data from the plurality of conductive bars. Devices and methods for distributing power and data to such devices within an MCC are also disclosed.

Abstract: A system, in one embodiment, includes a power distribution center having an enclosure with an access door configured to move between a closed position and an open position. The power distribution center includes a non-contact sensor disposed inside the enclosure, wherein the non-contact sensor comprises a non-contact voltage sensor, or a non-contact temperature sensor, or a combination thereof. The power distribution center also includes an indicator viewable outside of the enclosure while the door is in the closed position, wherein the indicator is coupled to the non-contact sensor.

Abstract: A system, in one embodiment, includes a power distribution center having an enclosure with an access door configured to move between a closed position and an open position. The system also includes a monitoring system configured to monitor operational parameters inside the enclosure. Also, the system includes an entry control system coupled to the monitoring system, wherein the entry control system is configured to lock the access door if the operation parameters are indicative of a potentially hazardous condition inside the enclosure.

Abstract: A technique is provided for applying secondary or backup power to a networked device in the event of a loss or malfunction of network power. In a control and monitoring network. Various devices may receive both power and data signals from a network cable. In the event of loss of network power, or the reduction in network power, the devices can automatically and without interruptions seek power from the secondary power source.

Abstract: A method and apparatus is disclosed for determining the power line parameters of a system. Specifically, there is provided a method comprising perturbing a voltage waveform through a first connection, measuring a characteristic of the perturbation through a second connection, and calculating a line impedance based on the characteristic of the perturbation.

Abstract: A network is configured to apply power and data signals to networked devices for operation of the devices. A backup power supply module is coupled to the source of network power and to a secondary power source. The secondary power source may have an adjustable voltage level or a level fixed with relation to the network power voltage level. In the event of a loss or insufficiency of network power, power from the secondary source is automatically applied to the connected device or devices. The device may be programmed for certain failure modes and the secondary power source provides the power needed for operation in the event of loss of network power.

Abstract: In one embodiment, the components within each respective unit of the MCC are connected powered by a connector assembly that is directly engaged to secondary power and network data conductors disposed of within the enclosure. The connector assembly, if so desired, will maintain connection even upon disengagement of the unit from the main power supply. This service position can be employed to provide a safe environment for diagnostic testing and repair of the unit. In another embodiment, the secondary power and network data conductors may by carried over an open rail system. This embodiment provides a convenient means of quickly and easily engaging the secondary power and network data conductors to the unit. Another embodiment provides a method for placing the unit into a service position.

Abstract: Transmission of electrical signals can be conducted over a rail. The rail, which may be an at least partially open rail structure, may be disposed within an enclosure, and can be used to transmit data and power signals to an assembly of electrical components. A connector assembly may also be provided to facilitate the transmission of data and power signals between the components and the rail.

Abstract: A system operable to detect voltages within an electrical device and provide an output based on the voltages detected by the system. The electrical device may include an isolation switch adapted to selectively isolate the electrical device from an electrical bus. The system may be operable to detect voltage data in the electrical bus and the electrical device downstream of the isolation switch. The system may provide an indication that voltage is detected in the electrical bus, but that no hazardous voltages are detected within the electrical device downstream of the isolation switch. The system may be adapted to produce a plurality of outputs based on the voltage data detected on the electrical bus and in the electrical device downstream of the isolation switch.

Abstract: A network is configured to apply power and data signals to networked devices for operation of the devices. A backup power supply module is coupled to the source of network power and to a secondary power source. The secondary power source may have an adjustable voltage level or a level fixed with relation to the network power voltage level. In the event of a loss or insufficiency of network power, power from the secondary source is automatically applied to the connected device or devices. The device may be programmed for certain failure modes and the secondary power source provides the power needed for operation in the event of loss of network power.

Abstract: A technique is provided for applying secondary or backup power to a networked device in the event of a loss or malfunction of network power. In a control and monitoring network. Various devices may receive both power and data signals from a network cable. In the event of loss of network power, or the reduction in network power, the devices can automatically and without interruptions seek power from the secondary power source.

Abstract: Fluid compressor or expander having a main rotor with discrete arched-helical flutes that have ruled surface roots that match the predominantly planar tips of the teeth of the associated gate rotors and provide effective fluid sealing as the gate rotor teeth sweep through the flutes of the main rotor during compressor or expander operation. The flutes can be readily and economically made by end milling, in which a first flute is milled with a minimized number of milling passes such as a first pass to make one arched-helical flank and a portion of the arcked-helical root of a first flute and a second pass to make the opposing arcked-helical flank and another portion of the arched-helical root of the first flute. Additional discrete flutes are made in a similar manner until the main rotor is completed.

Abstract: Fluid compressor or expander having a main rotor with discrete arcked-helical flutes that have ruled surface roots that match the predominantly planar tips of the teeth of the associated gate rotors and provide effective fluid sealing as the gate rotor teeth sweep through the flutes of the main rotor during compressor or expander operation. The flutes can be readily and economically made by end milling, in which a first flute is milled with a minimized number of milling passes such as a first pass to make one arcked-helical flank and a portion of the arcked-helical root of a first flute and a second pass to make the opposing arcked-helical flank and another portion of the arcked-helical root of the first flute. Additional discrete flutes are made in a similar manner until the main rotor is completed.

Abstract: An optimal set of devices is allocated to a package of device requests. In one embodiment, for each device request within the package of requests, a determination is made as to one or more eligible devices capable of satisfying each of the device requests and for each eligible device, a preference value is obtained. The preference values are then used to assign devices to a package of device requests such that the sum of the preference values of the assigned devices satisfies a specific optimizing function. The assigned devices provide global optimization of device allocation for a package of requests, thereby improving system throughput and performance.