An integrated device provides a measure of a quantity dependent on current through an electrical conductor, having: a sensing and processing sub-system; an electrical conductor conducting current; an insulating material encapsulates the sensing and processing sub-system and maintains the electrical conductor in a fixed and spaced relationship to the sensing and processing sub-system. The insulating material insulates the electrical conductor from the sensing and processing sub-system. Sensing and processing sub-system sensing circuitry includes magnetic field sensing elements adjacent the electrical conductor. The sensing circuitry provides a measure of the quantity as a weighted sum and/or difference of magnetic field sensing elements outputs caused by current through the electrical conductor adjacent the magnetic field sensing elements. A voltage sensing input senses a measure of voltage associated with the current conductor. Sensing and processing sub-system output circuitry provides an output measure of the quantity from the sensed measure of current and voltage.

In embodiments, it is provided an integrated device for providing a measure of a quantity dependent on current through an electrical conductor, having: a sensing and processing sub-system; an electrical conductor to conduct a current; an insulating material encapsulating the sensing and processing sub-system and maintaining the electrical conductor in a fixed and spaced relationship to the sensing and processing sub-system, wherein the insulating material is configured to insulate the electrical conductor from the sensing and processing sub-system; sensing circuitry comprising a plurality of magnetic field sensing elements arranged on the sensing and processing sub-system adjacent to the electrical conductor, wherein the sensing circuitry is configured to provide a measure of the quantity as a weighted sum and/or difference of outputs of the magnetic field sensing elements caused by the current flowing through the electrical conductor adjacent to the plurality of magnetic field sensing elements; a voltage sensing input for sensing a measure of voltage associated with the current conductor; and output circuitry on the sensing and processing sub-system arranged to provide an output measure of the quantity from the sensed measure of current and sensed measure of voltage.

In embodiments, it is provided an integrated device for providing a measure of a quantity dependent on current through an electrical conductor, having: a sensing and processing sub-system; an electrical conductor to conduct a current; an insulating material encapsulating the sensing and processing sub-system and maintaining the electrical conductor in a fixed and spaced relationship to the sensing and processing sub-system, wherein the insulating material is configured to insulate the electrical conductor from the sensing and processing sub-system; sensing circuitry comprising a plurality of magnetic field sensing elements arranged on the sensing and processing sub-system adjacent to the electrical conductor, wherein the sensing circuitry is configured to provide a measure of the quantity as a weighted sum and/or difference of outputs of the magnetic field sensing elements caused by the current flowing through the electrical conductor adjacent to the plurality of magnetic field sensing elements; a voltage sensing input for sensing a measure of voltage associated with the current conductor; and output circuitry on the sensing and processing sub-system arranged to provide an output measure of the quantity from the sensed measure of current and sensed measure of voltage.

An integrated device provides a measure of a quantity dependent on current through an electrical conductor, having: a sensing and processing sub-system; an electrical conductor conducting current; an insulating material encapsulates the sensing and processing sub-system and maintains the electrical conductor in a fixed and spaced relationship to the sensing and processing sub-system. The insulating material insulates the electrical conductor from the sensing and processing sub-system. Sensing and processing sub-system sensing circuitry includes magnetic field sensing elements adjacent the electrical conductor. The sensing circuitry provides a measure of the quantity as a weighted sum and/or difference of magnetic field sensing elements outputs caused by current through the electrical conductor adjacent the magnetic field sensing elements. A voltage sensing input senses a measure of voltage associated with the current conductor. Sensing and processing sub-system output circuitry provides an output measure of the quantity from the sensed measure of current and voltage.

An integrated device provides a measure of a quantity dependent on current through an electrical conductor, having: a sensing and processing sub-system; an electrical conductor conducting current; an insulating material encapsulates the sensing and processing sub-system and maintains the electrical conductor in a fixed and spaced relationship to the sensing and processing sub-system. The insulating material insulates the electrical conductor from the sensing and processing sub-system. Sensing and processing sub-system sensing circuitry includes magnetic field sensing elements adjacent the electrical conductor. The sensing circuitry provides a measure of the quantity as a weighted sum and/or difference of magnetic field sensing elements outputs caused by current through the electrical conductor adjacent the magnetic field sensing elements. A voltage sensing input senses a measure of voltage associated with the current conductor. Sensing and processing sub-system output circuitry provides an output measure of the quantity from the sensed measure of current and voltage.

A multi-sensor, real-time, in-process current and voltage estimation system is disclosed including sensors, affiliated hardware, and data processing algorithms that allow accurate estimation of currents and voltages from magnetic and electric field measurements, respectively. Aspects of the system may be embodied in a detector that is readily attachable to conductors of an energized system for contactless current and/or voltage sensing of the conductors without requiring the conductors to be disconnected from the energized system.

A multi-sensor, real-time, in-process current and voltage estimation system is disclosed including sensors, affiliated hardware, and data processing algorithms that allow accurate estimation of currents and voltages from magnetic and electric field measurements, respectively. Aspects of the system may be embodied in a detector that is readily attachable to conductors of an energized system for contactless current and/or voltage sensing of the conductors without requiring the conductors to be disconnected from the energized system.

Embodiments generally relate to a method for allowing power supplied through a cable to be determined. The method comprises receiving magnetic field data, the magnetic field data relating to a magnetic field generated by the cable, receiving reference data, the reference data relating to a current supplied to one or more monitored loads powered through the cable; based on the received magnetic field data and reference data, determining at least one parameter of a function that relates the magnetic field generated by the cable to the power supplied through a cable; and making available the at least one parameter, so that a power supplied by the cable can be determined based on the at least one parameter and a magnetic field value. The one or more monitored loads are a subset of all the loads powered through the cable.

Embodiments generally relate to a method for allowing power supplied through a cable to be determined. The method comprises receiving magnetic field data, the magnetic field data relating to a magnetic field generated by the cable, receiving reference data, the reference data relating to a current supplied to one or more monitored loads powered through the cable; based on the received magnetic field data and reference data, determining at least one parameter of a function that relates the magnetic field generated by the cable to the power supplied through a cable; and making available the at least one parameter, so that a power supplied by the cable can be determined based on the at least one parameter and a magnetic field value. The one or more monitored loads are a subset of all the loads powered through the cable.

A non-contact power meter system for measuring power in an energized cable is provided. It includes: at least one electric field sensor; a plurality of magnetic field sensors, wherein the at least two magnetic field sensors together are configured to measure a magnetic field in a tangential direction and a radial direction with respect the energized cable measured; and a processor, which receives measurement signals from the various sensors, and is configured to measure power in the energized cable. A method of determining twist in an energized cable using non-contact power meter system(s) is also provided.