Abstract: A power monitor includes a power conditioning circuit that provides conditioned power to a load. The power conditioning circuit includes at least one sensor to measure a power quality characteristic, e.g., input voltage, load current, temperature, etc. A terminal device implements a diagnostic tool for the power monitor and includes a processor to obtain data indicative of the power quality characteristic over a communication link with the power monitor. The data may be retrieved in response to a trigger condition. A user interface implemented on the terminal device displays the obtained power quality characteristic as at least one temporally varying waveform.

Abstract: A knowledge base contains logical rules on electric power data and associated information. At least one determinant is constructed, without activity by a human user, from data that is descriptive of electricity conveyed through at least one power monitor. A determination is made as to whether any of the logical rules correspond with the determinant. Information associated with the logical rules that correspond with the determinant is provided.

Abstract: A supply voltage monitor includes a switch circuit that enables coupling of an AC power supply to a load. A control circuit switches the switch circuit from a non-conductive state to a conductive state, and vice-versa, based upon a state of a state machine implemented by the control circuit, and further reports anomalies in process variables, such as voltage and current levels, temperature, etc., based on the state of the state machine. The transition criteria that is met to compel a transition in state is selectable by a user by way of a user interface. The transition criteria may correspond to different power levels that define a range over which the power is considered nominal and a range over which the power is considered to be an anomaly. The transition criteria additionally define what type of anomalies are reported without a change in the conductivity of the switch circuit.

Abstract: To protect an electrical load from anomalous electricity provided by an electricity source, a switching mechanism is configured to transition into one of conducting and non-conducting states in response to respective on and off states of a switching signal. A power controller evaluates input frequency characteristics of an overvoltage event in input electricity provided by the electricity source against at least one frequency criterion. Event timing is established for the timing signal that corresponds to the frequency characteristics met by the frequency threshold criterion. The event timing coordinates the overvoltage event with the state transitions of the switching mechanism so that an amplitude notch is superimposed on the input electricity over a temporal duration proportionate to that of the overvoltage event. State transitions are compelled in the switching mechanism to superimpose the amplitude notch on the input electricity in accordance with the event timing.

Abstract: To protect an electrical load connected to an output port from anomalous electricity in an apparatus that provides output electricity at the output port from input electricity accepted through an input port thereof, an input sensing unit is electrically connected to the input port and configured to indicate an overvoltage event. A power control unit generates, responsive to the overvoltage event, a modulation signal that defines at least one amplitude notch of variable temporal width. A switching mechanism electrically interposed between the input port and the output port transitions into conducting and non-conducting states in accordance with the modulation signal to superimpose the amplitude notch on electricity conveyed to the output port through the switching mechanism.

Abstract: To protect a connected electrical load from anomalous electricity, an apparatus has a condition sensing unit configured to distinguish a power event type from among power event types from characteristics of an input electricity waveform accepted through an input port. The condition sensing unit indicates the power event type when a corresponding overvoltage criterion is met by characteristics of the input electricity waveform. A power control unit generates, responsive to a power event, a modulation signal that defines at least one amplitude notch in the input electricity waveform in accordance with the power event type. A switching mechanism electrically interposed between the input port and the output port transitions into conducting and non-conducting states in accordance with the modulation signal to superimpose the notch on the input electricity waveform.

Abstract: A plurality of controllers, each coupled to a plurality of outlets, compare values assigned to characteristic parameters or “process variables” against at least one control value on the process variable. The values for the process variables are derived from at least one signal provided to corresponding controllers. At least one of the outlets at each controller is configured to selectively provide an electrical voltage from an input voltage in accordance with the comparison of the process variable values and the control value. Remotely accessible controls may be stored at the controllers which may be retrieved through respective network interfaces at the controllers. A remote processor may use the retrieved controls to remotely specify, such as over a communication network, the control values.

Abstract: A reaction mode is selected through a user interface from a plurality of reaction modes that includes a fast reaction mode, by which each of a plurality of values assigned to a process variable over time are individually evaluated in an event decision that asserts an occurrence of a power event. The reaction modes also include a slow reaction mode by which none of the values assigned to the process variable over time are individually evaluated in the event decision. Measurements of a signal monitored by a power controller are assigned to the process variable as its values. The event decision evaluates the process variable values against an event boundary in accordance with the selected reaction mode. A transition between conducting and non-conducting states in a switch circuit is compelled in response to the occurrence of the power event as determined from the event decision.

Abstract: A network appliance apparatus conveys communication signals over a communication network and is constructed from a communication circuit and a power conditioning circuit in a common housing. The power conditioning circuit conditions alternating current (AC) electrical power and it is determined which power criteria are met by the conditioned electrical power. The conditioned electrical power is selectively provided to the communication circuit in response to one of the power criteria being met such that the conditioned electrical power is removed from the communication circuit when another of the power criteria is met.

Abstract: A power conditioning device includes a set of outlets through which one or more load devices are provided electricity. Each device outlet is controlled independently of the control of other device outlets. The power conditioning device includes a storage device that contains a set of controls by which the power conditioning device can be operated and programmed. The set of controls, which may be contained in a Hypertext Markup Language formatted file and retrieved by a remote device through Hypertext Transfer Protocol requests, allows such control and programming to be performed from a remote location. Additionally, the power conditioning device may be configured to log selected data and provide (such) the log, as well as selected alarms, to the remote device.

Abstract: A power conditioning, distribution and management system includes a switch circuit that enables coupling of an AC power supply to a load though an overcurrent device. A control circuit switches the switch circuit from a non-conductive state to a conductive state when a supply voltage signal is between first overvoltage and undervoltage thresholds. The control circuit records an overvoltage event and maintains the switch circuit in the conductive state when the supply voltage signal exceeds a second, higher overvoltage threshold and switches the switch circuit to a nonconductive state when the supply voltage signal exceeds a third, highest overvoltage threshold. The control circuit records an undervoltage event and maintains the switch circuit in the conductive state when the supply voltage signal falls below a second, lower under-voltage threshold and switches the switch circuit to the non-conductive state when the supply voltage signal falls below a third, lowest undervoltage threshold.

Abstract: A network appliance apparatus conveys communication signals over a communication network and is constructed from a communication circuit and a power conditioning circuit in a common housing. The power conditioning circuit conditions alternating current (AC) electrical power and it is determined which power criteria are met by the conditioned electrical power. The conditioned electrical power is selectively provided to the communication circuit in response to one of the power criteria being met such that the conditioned electrical power is removed from the communication circuit when another of the power criteria is met.

Abstract: A hybrid switch circuit includes a hybrid switch that couples an input conductor connected to an AC power supply to an output conductor connected to a load. The hybrid switch includes a power semiconductor in parallel with an electromagnetic relay. A control circuit turns on the hybrid switch by turning on the power semiconductor at a zero-voltage crossing of the AC voltage to provide a conductive path and then closing the relay to provide a conductive bypass path that bypasses the power semiconductor. The control circuit turns off the hybrid switch by opening the relay and subsequently turning off the power semiconductor at a zero crossing of the load current. The control circuit operates in response to at least one switch control signal that indicates whether an operating fault condition exists.

Abstract: A system and method for conditioning an alternating current (“AC”) power transmission for supply to a load circuit.

Abstract: A supply voltage monitor includes a switch circuit that enables coupling of an AC power supply to a load. A control circuit switches the switch circuit from a non-conductive state to a conductive state when a supply voltage signal is between a first over-voltage threshold and a first under-voltage threshold. The control circuit records an over-voltage event and maintains the switch circuit in the conductive state when the supply voltage signal exceeds a second, higher over-voltage threshold. The control circuit switches the switch circuit to a non-conductive state when the supply voltage signal exceeds a third, highest over-voltage threshold. The control circuit records an under-voltage event and maintains the switch circuit in the conductive state when the supply voltage signal falls below a second, lower under-voltage threshold. The control circuit switches the switch circuit to the non-conductive state when the supply voltage signal falls below a third, lowest under-voltage threshold.

Abstract: A hybrid switch circuit includes a hybrid switch that couples an input conductor connected to an AC power supply to an output conductor connected to a load. The hybrid switch includes a power semiconductor in parallel with an electromagnetic relay. A control circuit turns on the hybrid switch by turning on the power semiconductor at a zero-voltage crossing of the AC voltage to provide a conductive path and then closing the relay to provide a conductive bypass path that bypasses the power semiconductor. The control circuit turns off the hybrid switch by opening the relay and subsequently turning off the power semiconductor at a zero crossing of the load current. The control circuit operates in response to a hybrid switch control signal that indicates whether an operating fault condition exists.

Abstract: A plurality of controllers, each coupled to a plurality of outlets, compare values assigned to characteristic parameters or “process variables” against at least one control value on the process variable. The values for the process variables are derived from at least one signal provided to corresponding controllers. At least one of the outlets at each controller is configured to selectively provide an electrical voltage from an input voltage in accordance with the comparison of the process variable values and the control value. Remotely accessible controls may be stored at the controllers which may be retrieved through respective network interfaces at the controllers. A remote processor may use the retrieved controls to remotely specify, such as over a communication network, the control values.

Abstract: Power data are collected from one or more power modules that control power to a connected load. The power data may include indications of source electricity measurements and of load power consumption measurements. These measurements are correlated in space or time and a set of the correlated source electricity measurements or the correlated load power measurements is selected for presentation. The selected set of measurements is presented on a presentation device such that deviations from specified values are indicated to a user.

Abstract: A power conditioning device includes a set of outlets through which one or more load devices are provided electricity. Each device outlet is controlled independently of the control of other device outlets. The power conditioning device includes a storage device that contains a set of controls by which the power conditioning device can be operated and programmed. The set of controls, which may be contained in a Hypertext Markup Language formatted file and retrieved by a remote device through Hypertext Transfer Protocol requests, allows such control and programming to be performed from a remote location. Additionally, the power conditioning device may be configured to log selected data and provide (such) the log, as well as selected alarms, to the remote device.

Abstract: A supply voltage monitor includes a switch circuit that enables coupling of an AC power supply to a load. A control circuit switches the switch circuit from a non-conductive state to a conductive state, and vice-versa, based upon a state of a state machine implemented by the control circuit, and further reports anomalies in process variables, such as voltage and current levels, temperature, etc., based on the state of the state machine. The transition criteria that is met to compel a transition in state is selectable by a user by way of a user interface. The transition criteria may correspond to different power levels that define a range over which the power is considered nominal and a range over which the power is considered to be an anomaly. The transition criteria additionally define what type of anomalies are reported without a change in the conductivity of the switch circuit.