A load shed module configured to be connected in series between a power supply and a load is disclosed. A separate load shed module is connected in series between each load and the power supply. The load shed module determines the frequency of the voltage supplied from the power supply. Based on the frequency, the load shed module determines if utility power is connected or if a generator is connected. If the generator is connected and the frequency of the voltage goes outside of a desired operating range for a preset time, the load shed module disconnects the load from the power supply. Each load shed module includes a priority setting and reconnects its corresponding load after a predetermined time corresponding to the priority setting.

An anti-tamper device for a utility meter, in particular for an enclosure thereof, providing a guideway for a sealing element, wherein in a sealed state of the utility meter, at least a section of the sealing element extends along the guideway. Furthermore, an enclosure for a utility meter comprising a socket configured for receiving an anti-tamper device, as well as a utility meter comprising an anti-tamper device, and/or an enclosure. The guideway is provided with a predetermined breaking zone configured to break when the sealing element exerts a predefined breaking force onto the anti-tamper device.

An electric meter includes: a plurality of connectors configured to form electrical connections to corresponding plurality of receptacles in an electric meter socket, wherein at least one electrical connection to the plurality of receptacles is formed with a neutral wire; and a plurality of measurement devices configured to measure electrical characteristics of voltage and current waveforms provided to the electric meter from an electric distribution system and a distributed energy resource (DER) device via the plurality of connectors. The neutral wire provides an electrical reference point for measurement of the voltage waveforms.

An electric meter includes: a plurality of connectors configured to form electrical connections to corresponding plurality of receptacles in an electric meter socket, wherein at least one electrical connection to the plurality of receptacles is formed with a neutral wire; and a plurality of measurement devices configured to measure electrical characteristics of voltage and current waveforms provided to the electric meter from an electric distribution system and a distributed energy resource (DER) device via the plurality of connectors. The neutral wire provides an electrical reference point for measurement of the voltage waveforms.

An electrical outlet receptacle including a circuit board, a set of fixed contacts and a set of movable contacts, a solenoid, a carriage, a lifting shelf, a slide mechanism, a reset plunger, and an armature.

An electrical outlet receptacle including a circuit board, a set of fixed contacts and a set of movable contacts, a solenoid, a carriage, a lifting shelf, a slide mechanism, a reset plunger, and an armature.

An electric meter socket includes: a first plurality of connection points within the electric meter socket configured to form electrical connections to line voltage wirings of an electric distribution system; a second plurality of connection points within the electric meter socket configured to form electrical connections to output voltage wirings of a DER device; one or more connection points within the electric meter socket configured to form an electrical connection of neutral wires of the electric distribution system, the DER device, and a load; and a plurality of receptacles, each of the plurality of receptacles electrically connected to a corresponding connection point and configured to accept a mating connector of an electric meter.

An electric meter socket includes: a first plurality of connection points within the electric meter socket configured to form electrical connections to line voltage wirings of an electric distribution system; a second plurality of connection points within the electric meter socket configured to form electrical connections to output voltage wirings of a DER device; one or more connection points within the electric meter socket configured to form an electrical connection of neutral wires of the electric distribution system, the DER device, and a load; and a plurality of receptacles, each of the plurality of receptacles electrically connected to a corresponding connection point and configured to accept a mating connector of an electric meter.

An electric meter circuit assembly is disclosed which can be used as a conversion kit or in a meter installation generally. The circuit assembly includes an electric meter adapter that has a wiring harness, a meter socket adapter having a socket face adapted to receive a plug-in meter, the meter socket adapter including a plurality of meter connections exposed at the socket face; a current transformer subassembly including a plurality of current transformers, each current transformer being associated with a phase of the multi-phase electrical service, each current transformer of the plurality of current transformers being electrically connected between a meter connection of the plurality of meter connections and a phase of the multi-phase electrical service. The circuit assembly further includes a voltage transformer subassembly electrically connected between phases of the multi-phase electrical service and electrical connections in a connector adapted to be connected to the wiring harness.

A terminal block for current measurement in a power grid. The terminal block includes a shunt and a temperature sensor, and is configured to be connected to an Intelligent Electronic Device IED and a primary device. Furthermore, a respective IED and a system for current measurement including the IED and the terminal block are disclosed as well as a method for calibration of the system and a method for current measurement in power grids. A voltage measurement unit in the IED is adapted to measure a voltage drop at the shunt; a current flowing through the shunt can be calculated from the temperature and from calibration data. The terminal block enables a particularly efficient calibration method.