Abstract: A power monitoring system for electrical panels providing power, received from one or more power sources, to multiple current conductors. The power monitoring system preferably includes a plurality of sensors affixed to a support. A portion of each sensor defines an opening through which a current conductor may be extended.

Abstract: Separable toroidal segments reduce the size of a sensing transformer that can be installed on an electrical conductor while connected to a device.

Abstract: A power monitoring system with multiple current sensors.

Abstract: A current sensor that includes a pair of segments. Each of the segments includes magnetically permeable cores that can be joined together. A winding is used to substantially encircle one of the cores.

Abstract: A power monitoring system for electrical panels providing multi-phase power, with multiple current sensors. The disclosed power monitoring system preferably determines the instantaneous power provided to each of multiple loads by sensing the potential and phase of each conductor that supplies power to one or more of the respective loads.

Abstract: An electricity metering method and apparatus is provided for determining the phase of first waveform relative to a harmonically distorted, second waveform having cycles temporally distinguished by an occurrence of an amplitude that is neither zero amplitude nor a maximum amplitude of said waveform.

Abstract: Data is acquired by a data acquisition unit and wirelessly transmitted to a data transfer device that wirelessly retransmits the data to a data processing device.

Abstract: A modular metering system comprises a data processing module, a current module and a voltage module. The current and voltage modules include sensor memories characterizing the respective current and voltage sensors facilitating assembly and repair of the metering system.

Abstract: A power monitoring system comprising a first current sensor suitable to sense first changing electrical current within a first conductor to a first load and a first conductor. A second conductor sensing a first voltage potential provided to the first load. A power monitor superimposes a first signal on the first conductor and first current sensor such that the first signal is sensed on the other of the first conductor and first current sensor. Associating the first voltage potential with first changing electrical current in the power usage calculation of the first load.

Abstract: An interrupt request is asserted in anticipation of a period of latency preceding preparedness of a power meter data processing device to sample a voltage or current enabling the use an interrupt to control the data processing device's performance of real-time sampling in combination with other tasks related to the power meter's operation.

Abstract: The computational resources of a digital power meter can be reduced by utilizing an interrupt requested in anticipation of interrupt latency to perform real-time tasks, an approximation of a root mean square load current at an earlier time to compensate for a phase shift between the load current and the current transducer output, and an amplitude that is neither zero nor maximum to distinguish the cycles of a harmonically distorted waveform.

Abstract: The data storage and processing resources required for an electric meter are reduced by basing the selection and application of phase error correction on a root mean square load current flowing through the meter.

Abstract: An interrupt request is asserted in anticipation of a period of latency preceding preparedness of a power meter data processing device to sample a voltage or current enabling the use an interrupt to control the data processing device's performance of real-time sampling in combination with other tasks related to the power meter's operation.

Abstract: An improved sensor for a power monitor comprises an array of split core current sensors that can be installed without disconnecting the wiring to the circuit breakers of an electrical panel and a voltage tap connectable to an electrical panel bus bar.

Abstract: An electricity metering method and apparatus is provided for determining the phase of first waveform relative to a harmonically distorted, second waveform having cycles temporally distinguished by an occurrence of an amplitude that is neither zero amplitude nor a maximum amplitude of said waveform.

Abstract: A phase determination system for power measurement.

Abstract: Separable toroidal segments reduce the size of a sensing transformer that can be installed on an electrical conductor while connected to a device.

Abstract: A power monitoring system with multiple current sensors.

Abstract: A power monitoring system for electrical panels providing multi-phase power, with multiple current sensors. The disclosed power monitoring system preferably includes a support, at least four sensors defining an opening through which a wire may be extended, with the sensors being supported by the supports in a fixed spatial relationship.

Abstract: A pick-and-place type circuit board mounting bracket is surface-mounted, or alternatively, soldered with reinforcing posts that occupy one or more through-holes in the circuit board. The mounting face of the bracket is offset with respect to its mounting base to allow the face of the bracket to be sub-flush, flush, or extend beyond the edge of the circuit board. The front surface of the bracket is preferably perpendicular to the bottom surface and a longitudinal threaded bore extends through the main body to provide attachment means for affixing structures to the bracket. The posts which extend downwardly through the circuit board may have at least one planar side surface or a single rectangular post may be employed. The length of the posts is preferably less than the thickness of the circuit board for surface mount applications or long enough to extend through the circuit board for wave soldering.