Abstract: Provided is an isolation interface for isolating, from a Class 1 power circuit, an electricity meter powered by a Class 2 power supply or battery that monitors the Class 1 power circuit. Also provided are, an electrical metering system utilizing the interface. The interface includes an enclosure containing at least one isolation interface circuit including an input for electrical connection to a sensor inductively coupled to the Class 1 power circuit, and an output for electrical connection to the electricity meter. A potential transformer having a primary electrically connected to the input and a secondary electrically connected to the output transforms a signal received from the sensor to an output signal for the electricity meter. The output is electrically isolated from the input, allowing manufacture of the electricity meter as a low voltage appliance with lower manufacturing costs, and protecting the electricity meter against a fault voltage transmitted by the sensor to the interface.

Abstract: An isolation interface for isolating an electricity meter powered by a Class 2 power supply and monitoring a Class 1 power circuit from the power circuit being monitored, and an electrical metering system utilizing the interface. The interface comprises an enclosure containing at least one isolation interface circuit comprising an input for electrical connection to a sensor inductively coupled to the Class 1 power circuit, and an output for electrical connection to the electricity meter. A potential transformer having a primary electrically connected to the input and a secondary electrically connected to the output transforms a signal received from the sensor to an output signal for the electricity meter. The output is thus electrically isolated from the input, allowing the electricity meter to be manufactured as a low voltage appliance, with attendant reduction in manufacturing costs, and protecting the electricity meter against a fault voltage transmitted by the sensor to the interface.

Abstract: An energy monitoring system which in preferred embodiments employs at least one nodal junction receiving and creating data by analog to digital conversion from a plurality of local node sensors. Data accumulated by the nodal junction is used for analysis of wave patterns to detect anomalies in the local electrical network and/or loads connected to the local electrical network. Anomalies can be detected in various ways, including: comparison of data with historical data acquired from the local node sensors; comparison of data with known wave pattern profiles for similar loads; and comparison of data with data acquired from local node sensors at other locations. Thus, the accumulation of data in the system of the invention provides the ability to perform comparative analysis to a baseline or standard, and also the ability to perform comparative analysis at an enterprise level across different target locations.

Abstract: An energy monitoring system which in preferred embodiments employs at least one nodal junction receiving and creating data by analog to digital conversion from a plurality of local node sensors. Data accumulated by the nodal junction is used for analysis of wave patterns to detect anomalies in the local electrical network and/or loads connected to the local electrical network. Anomalies can be detected in various ways, including: comparison of data with historical data acquired from the local node sensors; comparison of data with known wave pattern profiles for similar loads; and comparison of data with data acquired from local node sensors at other locations. Thus, the accumulation of data in the system of the invention provides the ability to perform comparative analysis to a baseline or standard, and also the ability to perform comparative analysis at an enterprise level across different target locations.